The lower line on the brake, I believe is the Emergency Pneumatic pressure to the brake and not a hydraulic return. The part of the brake where the lines connect is a shuttle valve.
I haven't seen high performance brakes in a long time. I'm an A&P IA with a PPL. But i got hurt at home 10 years ago at home and haven't worked since. I ran a crew of between 12 and 16 mechanics on the night shift. This is like a flashback. A good one. Thank you. Be safe and have fun! PS, a clean shop is usually a good shop. Its nice to see how clean that one is.
Your video just confirmed why I like working GA. It’s nice seeing a maintenance videos. Come to my hangar and I’ll show you everything we work on from a Yak 52 to a Stearman. Plus your typical Mooney, Piper, Cessna and Beech. Plus Cirrus soon
Great video. Am partial to the Citation series, so this was spot on for me. Tech videos like this help people to see a whole different side to aviation and may bring spark the interest of someone who thought the aviation industry was only aimed at pilots. Outstanding.
Hi Shawn, nice this one - like many others tech vids you’ve posted - I’ve been in aviation since 1998 and nowadays I’m flying a Phenom 300 - first jet without TR. Just a little comment: - During my aviation career I observed in some pilots their lack of knowledge (interest!) on how to “detail to a mechanic” what is (exactly) happen when things go wrong with a system. Sometimes even a little explanation isn’t given. So, in my humble opinion, I suggest to all newer pilots to watch tech vids, to go “beyond” ground schools or whatever that may help this way! Thanks for posting, greetings from Brazil! 😉🇧🇷🍾
I used do brake jobs on Small planes Cessna, Beechcraft all smaller aircraft. Easier then automotive brake systems. Only worked on them for about a year but enjoyed the experience. This tech video sure brought back memories. Always enjoy them all thanks Shaun.
I really enjoy looking at the A and P side of aircraft. My best friend from my years in Las Vegas owned and operated a maintenance facility at McCarran on the Signature ramp. He retired and closed his business before I met him but we always enjoyed talking about airplanes. I was not in this line of work myself but was an engineer on ships for many years, so I love tech, mechanical systems and tools. I hope to see more of these tech videos in the future. Thanks.
I will answer as many questions as possible here in the comments. If you have more detailed questions send them to the CPL email and Shaun will get them to me. Glad y’all like the Tech Tuesday. Stay tuned!!!!
I had no idea that was how they looked! Got to be super heat resistant under those severe conditions. Thanks for sharing another bit of knowledge with we heathons!
Nice. I would of like to see the system put together and the tire as well put back on. I like a lot of tech stuff like that. Love the flying as well. Thank you and all the people who make this possible for all of us to watch. Thank you
Nice clip, thanks to Adam & Frank for agreeing to join in on the odd occasion. Re other things to show, start at the front and work back 😀 watching a TH-cam called “plane savers” where they are rebuilding a DC3 be interesting to see the difference on how they are built to a jet
Shaun all of your videos are enjoyable and informative. This was something you don't see everyday which is a plane with a brake assembly being replaced. Doesn't matter what plane it is it's educational. Good to see you moving into a different plane and looking forward to seeing the cockpit of a Hawker.
It will definately be cool seeing the inside of the Hawker! Seeing the work actually being done on the plane ...I bet a ot of people, myself included wouldn't have known it wasnt the G4 if he hadnt told us, maybe anyway. Although the wheels and brakes on the G4 are noticibly larger.
Tech videos are outstanding! Great way for us armchair enthusiasts to see things that you normally wouldn't get to see. Thanks very much for doing them.
Great video. Showing all sides of what keeps this method of transportation moving quickly and efficiently. I look forward to seeing more "behind the scenes!"
Hi Shaun, I studied mechanical engineering for a few years so this video is like a candy to me. Good idea. If you are open to new ideas maybe some visits to the Gulfstream factory or maintenance centers like this one would be very nice. Thank you and keep living the Corporate Pilot Life. :-)
Hey Shaun! Another Great video. So nice to see you and the company expanding out such as them allowing you to video maintenance issues and you furthering your career training in the Hawker! Would Love to see videos from that! Actually can't wait to see any of your videos! Oh, just saw you in Niko's video that came out today, so they didn't leave you out!!!! Good Luck!!!
Shawn thank you for your consistent professionalism. Your idea to include maintenance will broaden your viewership and provide more interesting content. Thank you very much for allowing me to tag along. Thank your team also. Best wishes in Hawker training. Be safe and God bless as always. Chip
Something a bit different fella. Nice work. Looks like your employers are slowly softening their rules on a few things. Thanks boss 🤣🤣 keep me coming and thank you.
As a retired corporate pilot/ A and P, this video really hits home for me. Thanks. Too bad you didn’t get your hands dirty and help out. LOL Morristown, oh sure, I move from NYC and now you start going to Morristown. BTW, I flew HS 125-700’s and 800’s back in the day. Very interesting lift dump.
That was nice to see, we should see some of the parts and how they work if we rely on them. Anyway, I don't know about others, but I like this now and again. Nice and short as well. Thanks.
Taking 'Tech Tuesday' or thereabouts to a whole new level..and We Love this stuff! So more please. And a quick question for Adam, when is he going to have his guys take care of that cable for the throttle(left throttle) in that G4 you were flying in a lot, that moves radically from the other in auto mode ;) sorry..just ribbing on him a bit(which means welcome to the club), and glad to see him and the mechanics graciously contribute to the channel.
niceguy217 When the G-IV comes in for inspection we will look into the auto throttle cables of the crew writes it up. Otherwise they have a life limit and get changed per the manufacturer.
@@adamdarnell7996, ah Adam those pilots aren't going to write things up..this from a former corp. pilot myself ;)..lost medical, but I remember coming in and wanting to do as little paperwork as possible..same as those guys. And the auto throttle thing is from the videos, a bunch of people asked why the left 1 was cycling much more than the right. Also they probably haven't written up how that same bird I think has a touchy right brake. And if they don't write it up..it means it's not bothering them to bad, but had to get those often mentioned items in there. As I said..Welcome to the club.
Love tech Tuesday's Shaun, thanks to you an your employer for sharing this. Interesting they don't repair the brakes, they just switch the whole assembly out.
It is all about time. We don’t want our aircraft down for maintenance for very long. To rebuild the brake would require a couple of days, to change a brake takes a couple of hours.
Good job Shaun. The brake system on the G IV I would think is pretty close to the brake system you showed us. Congrats on the training on the hawker. Looking forward to seeing you flaying that bird. See you soon.
This was GREAT, Shaun! I'm a automotive & small engine tech, so this is right in my wheelhouse. Never touched or have seen any mechanical part of any aircraft in my life (aside from your videos), so this is super interesting to me! Are those carbon brake shoes? I've never seen a friction material that looked like that in the automotive world. I know carbon withstands crazy temperatures, but does not work very well when cold, so I don't think it is here. NASCAR, and other racing applications use them. That return brake line blew my mind - what a great idea, to keep the fluid cool! I've never seen that system before in my life! Super important slowing a jet from triple-digit speeds, I'd imagine. Boiling the fluid during landing would end very badly for the aircraft, and possibly the passengers. I bet you could spend an entire week on jet brake systems - there's probably a TON of info there that I have no idea about. I'd love to see the master cylinder, and how the return fluid comes back - is it pumped back, or just naturally pulled back by the master? Lots of great stuff here, Shaun!! THANKS!
Oh this is cool. I'd like to know what the quality assurance protocols are like for aircraft repair and maintenance. Also, it would be totally cool to see the whole (brake) job done step by step.
Plz, more details. - do the brakes fail applied or released? a stuck brake during taxi might be better than no brakes at all when landing. or is the differential braking action a bigger problem? - can you land with the parking brake on? - do the valves control how much oil gets pumped in or how much gets released? (inlet or outlet) - are there emergency valves that prevent any more oil from getting pumped in if there is a serious leak? - how long are normal cooling down times and after a no-reversers landing? - can you do a successful landing with zero brakes? is minimal brake use a common way to shorten turnaround times? - do gulfstreams have auto braking that adjusts the brakes to the runway length used, like the 'big boys'?
Lots of questions here. The brakes usually fail when applied but they default to released. If there is no pressure they are released. If you land with the parking brake applied you will be changing ALL of your main wheels. Very bad idea but I have seen it happen. Most corporate jets with Thrust Reversers do Zero Brake landings all the time. There are fuses in the hydraulic lines that slam shut if a rapid decrease in the pressure is sensed to prevent a complete loss of fluid. I think I got them all.
Great to see! I'd hate to be the guy paying the bill for that new brake assembly, though! I've had the good fortune to fly on a Citation X a number of times, and it's a real rocket.
Enjoyed the video, it would have been great to see more of the whole brake change process. Tech question, why is it that on a lot of jets the tiller steering is only on the pilots side and not in the middle where either pilot has access to it?
Capt. I’m not sure why it is designed that way. Possibly because a lot of smaller jets are single pilot. Or possibly because the designers had enough stuff in the middle for both to use. Not sure. Good question though.
Thanks for the response. I've wondered about this because years ago there was an incident where the captain of a commercial flight became incapacitated and the co-pilot landed the plane successfully. The passengers were deplaned on the runway because the co-pilot couldn't steer the plane to the gate until the captain was attended to by medical staff.
Nice 1 BOB! Shaun WOW! This is a Great idea!!! Super gracious of Adam and Frank to let us in on how and why these beautiful planes stay in the air!!! Thank you Adam and Frank!!! You guys are awesome! Shaun are you using a different camera or something? The video is just outstanding! Is so crystal clear and everything just POPS! I mean ALL of your videos always looks great and I'm not saying that, maybe it's the lighting or something I dont know but great job! Loved the video!
@@CorporatePilotLife I knew it! Right away I knew something was just better, it was jaw dropping clear LoL I cant wait to see what it is because that thing is amazing, it's a keeper! Will be great with beautiful scenery, everything really. Congrats Shaun and nice choice! Have fun in Morristown! Dont forget that new camera! Hehe
Hi Shaun, thanks again for another interesting video. Thanks also to Adam and Frank and also a big thank you to your company who appear to be very accommodating and I would just like to say a big thanks to them also. A quick question to Adam if that is ok...feed and return on the brake lines? Would this be for cooling purposes? Keep em coming Shaun and to your co-workers. regards Gareth
ghl The brakes use the A hydraulic system which is also used for many other systems. The feed and return system is because of the other systems needing pressure as well.
Great video. While watching a question popped into my non-airplane head. How the heck do you jack up an airplane? Maybe quick 30 seconds next time you need to jack one up for another tech video? Thanks very much.
Adam Darnell Thanks very much for the response. I saw it this time. I love flying but these videos are the closest I’ll ever get to “flying.” Thanks again!
A couple of questions I always wondered is with the jet engine. Does the jet engine typically make hot section and TBO, or do you usually have to do it earlier than what the manufacturer states? Also, what does these inspections and rebuilds usually cost?
Most engines make the inspection cycles with no issues. The pricing depends on the engine. G-IV is roughly $1.5mil for a Mid-Life/Overhaul. The Hawker is about $250,000.
Great video! Though brake lines are cool and all, I was kinda hoping since you had the brake removed and accessible that you would actually show the relationship of the rotor and stator on the brake assembly. I spend sooo much time trying to explain how all that works when talking to car people, that a video showing that would have been very helpful. Plus you also had access to the back side of an installed wheel assy to show how the rotor interfaces with the wheel. I would love to make video's like this myself, but I'm currently working in helicopter test flight maintenance right now and forbidden to bring a camera into the hanger let alone on the aircraft.
The routine maintenance you perform in between aircraft flights. Also, what is the annual scheduled maintenance dictated by FAA? Any nerdy facts that pilots may not know.
phshon My dad had a plane and aviation has always been in my blood. I was a US Marine Flight Engineer on KC-130 for 8 years and got my A&P when I got out. Have been in corporate aviation pretty much ever since.
It would be great if there were a follow up on how that brake system exerts force on the disks or drum? Maybe a link to an expanded view would help a dummy 101 like me:)
Yes, the lines from the bottom of the shuttle valve are pneumatic emergency brake lines rather than returns, but still a good video. X's a good aircraft.
Awesome video Shawn really like learning about air planes no matter what the make. Maybe someday you could do a video of a engine and explain how some parts work
I have been flying, but it's been so busy that I haven't had time to do the editing. I have a new video coming out either later today or tomorrow morning.
Hi: The Gulfstream left throttle seems to actuate in auto pilot mode much more then the right one does. Any reason for this? Thanks for the great video's.
Those brakes look so tiny but I've been on 787 line for the past month standing next to their wheels and brakes haha. Love the change of pace getting to see the X!
Great Video Shaun. I have a question. When you are in the flight levels in a pressurized plane, where does the oxygen come from or is it generated from a device? I could google it but have always been curious. I may not be the only one who is wondering. Hope the new company is going well!!
Question for your DOM. If one of your Gulfstreams need to go to the MFGR what is the reasoning behind sending them to Georgia vs Long Beach? Is it what’s closer to the plane or does Gulfstream do different maintenance at different locations?
Depends on a few things. What are we having done? What does the facility schedule look like? Will we need engineering? Where is the aircraft based? Gulfstream does different things at each of their many facilities.
Super cool video, love it. Shaun or Adam what is the brake balance on a plane like the Citation or the Gulfstream? Also how are the brakes plumbed for safety in case of line failure? I imagine the brakes have at least two systems so you don't lose complete braking if you blow a seal or line?
Not sure what you mean by brake balance. The brakes are split on the rudder pedals LH/RH. There are multiple hydraulic systems that provide pressure as well as an emergency accumulator if you lose all normal system pressure. There are also fuses in the lines to prevent a massive leak.
@@adamdarnell7996 Thank you Adam, if you lose a line on say a right pad the inline fuse stops fluid passing allowing the rest upstream to work? What I meant by balance is if you pushing on braking pedals and it only controls R/H side then you would get a dangerous pull to one side but if the balance from the pedals did half on each side and you lost a pedal you would still get controlled stopping?
Excellent video! Always interesting to see internal working. How often does Shawn break you aircraft, lol. Do y'all do your own major inspections, ie. C checks
hey mates. question. with fadec in jets. why are piston engines with fuel injection still need to be leaned out for cruise. I am an engine guy in cars etc. and basically we always tune engines for 13:1 and cruise at 14.1 this is done automatically by the Engine management. based on load throttle position and time spent at the same engine speed. why do piston planes not have this. it seems like it would benefit pilots much more as its crucial for engine performance/ longevity and safety
Jack, I don’t have a good answer for you other than it would be cost prohibitive to put a FADEC system on Smaller piston aircraft. The FADEC computer alone costs more than most new piston aircraft.
@@adamdarnell7996 I dont believe that for a second. the best ECU for piston engines are made by Haltech in australia or MOTEC they have inputs for cylinder temps, exhaust temps , cyl pressure, they have flex fuel sensors so they detect the octane/alcohol in fuel and adjust engine performance based on fuel quality. this setup costs 3 thousand dollars. if it was made in bulk much cheaper so could defo be done you would also have a 4 position switch posit 1 ground posit 2 Climb/max power Posit 3 E cruise Posit 4 Max Cruise No guess work nothing. plane companies would love it because engines wld be looked after soo much better. less failures, safer aircraft. win win
How does that brake assembly not rotate on the spindle? I didn't see anything obvious that would be strong enough to keep that assembly from rotating once the brakes are applied.
@@adamdarnell7996 thanks. Being a diesel tech by trade, that really means that we're relying on the technician to do his job to not have a brake failure or a wheel off. I obviously know nothing about aircraft maintenance, but that doesn't seem to be the best option to keep that assembly in place.
Hey Shaun, is the Citation X on your list of planes you would like to fly? Do any of your friends fly the X or X+? How does it fly? Good luck with the Hawker training!
I would certainly love to fly the X, but haven't had the chance yet. I have a few friend that fly it. They all love flying it, but the cockpit is pretty tight.
The lower line on the brake, I believe is the Emergency Pneumatic pressure to the brake and not a hydraulic return. The part of the brake where the lines connect is a shuttle valve.
I haven't seen high performance brakes in a long time. I'm an A&P IA with a PPL. But i got hurt at home 10 years ago at home and haven't worked since. I ran a crew of between 12 and 16 mechanics on the night shift. This is like a flashback. A good one. Thank you. Be safe and have fun! PS, a clean shop is usually a good shop. Its nice to see how clean that one is.
Your video just confirmed why I like working GA. It’s nice seeing a maintenance videos. Come to my hangar and I’ll show you everything we work on from a Yak 52 to a Stearman. Plus your typical Mooney, Piper, Cessna and Beech. Plus Cirrus soon
Great video. Am partial to the Citation series, so this was spot on for me. Tech videos like this help people to see a whole different side to aviation and may bring spark the interest of someone who thought the aviation industry was only aimed at pilots. Outstanding.
I really enjoy the maintenance videos as well as the in flight videos. Thank you.
Hi Shawn, nice this one - like many others tech vids you’ve posted - I’ve been in aviation since 1998 and nowadays I’m flying a Phenom 300 - first jet without TR. Just a little comment:
- During my aviation career I observed in some pilots their lack of knowledge (interest!) on how to “detail to a mechanic” what is (exactly) happen when things go wrong with a system. Sometimes even a little explanation isn’t given. So, in my humble opinion, I suggest to all newer pilots to watch tech vids, to go “beyond” ground schools or whatever that may help this way! Thanks for posting, greetings from Brazil! 😉🇧🇷🍾
I used do brake jobs on Small planes Cessna, Beechcraft all smaller aircraft. Easier then automotive brake systems. Only worked on them for about a year but enjoyed the experience. This tech video sure brought back memories. Always enjoy them all thanks Shaun.
I really enjoy looking at the A and P side of aircraft. My best friend from my years in Las Vegas owned and operated a maintenance facility at McCarran on the Signature ramp. He retired and closed his business before I met him but we always enjoyed talking about airplanes. I was not in this line of work myself but was an engineer on ships for many years, so I love tech, mechanical systems and tools. I hope to see more of these tech videos in the future. Thanks.
Glad you enjoyed it! Definitely more to come...
I will answer as many questions as possible here in the comments. If you have more detailed questions send them to the CPL email and Shaun will get them to me.
Glad y’all like the Tech Tuesday. Stay tuned!!!!
I replied to the questions posted but this is my first time doing this so I may have done it wrong. Please advise.
Adam Darnell you did great
Thank you the engineers. So often heros hidden away behind the scenes
I had no idea that was how they looked! Got to be super heat resistant under those severe conditions. Thanks for sharing another bit of knowledge with we heathons!
As the son of a career A&P for major airlines, I have huge respect to those that keep airplanes flying!
Nice. I would of like to see the system put together and the tire as well put back on. I like a lot of tech stuff like that. Love the flying as well. Thank you and all the people who make this possible for all of us to watch.
Thank you
Great video Shaun! So nice to see the guys behind the scenes, that keep these birds in the air, get the credit there due. Living CPL!!!
Excellent video. A special thank you to Adam and Frank
Love your videos Shaun! Well done!!! Looking forward to the next one(s)!!! 😎 🛫
Nice clip, thanks to Adam & Frank for agreeing to join in on the odd occasion. Re other things to show, start at the front and work back 😀 watching a TH-cam called “plane savers” where they are rebuilding a DC3 be interesting to see the difference on how they are built to a jet
Shaun all of your videos are enjoyable and informative. This was something you don't see everyday which is a plane with a brake assembly being replaced. Doesn't matter what plane it is it's educational. Good to see you moving into a different plane and looking forward to seeing the cockpit of a Hawker.
It will definately be cool seeing the inside of the Hawker! Seeing the work actually being done on the plane ...I bet a ot of people, myself included wouldn't have known it wasnt the G4 if he hadnt told us, maybe anyway. Although the wheels and brakes on the G4 are noticibly larger.
Thank you so much! I am quite excited to get back into the Hawker, so stand by for those vids...
GREAT IDEA!!! I remember you showing how you checked the oil on your jet sometime back and how you add more!!that was realy cool!!
Tech videos are outstanding! Great way for us armchair enthusiasts to see things that you normally wouldn't get to see. Thanks very much for doing them.
Great video. Showing all sides of what keeps this method of transportation moving quickly and efficiently. I look forward to seeing more "behind the scenes!"
great video keep them coming congratulations on the Hawker Training
Im currently working towards my A&P so these vids are a added bonus to your already great vids, keep up the great work!
Happy to see and hear anything technical and maintenance related regardless of aircraft. Thanks Shaun!
Nice video, nice camera work and audio was perfectly clear. Learned something new today!
Thanks, Niko!
Κάλω Πασκα Νίκο!
NIKO! 🍻
Very cool, Shaun just like the brake assemblies on the F-14s I used to work on only smaller.
This is going to be all kinds of awesome. Thanks to you and to Adam!
Hi Shaun, I studied mechanical engineering for a few years so this video is like a candy to me. Good idea. If you are open to new ideas maybe some visits to the Gulfstream factory or maintenance centers like this one would be very nice. Thank you and keep living the Corporate Pilot Life. :-)
I worked at Gulfstream for 42 years and they absolutely will not allow photography of any kind.
Hey Shaun! Another Great video. So nice to see you and the company expanding out such as them allowing you to video maintenance issues and you furthering your career training in the Hawker! Would Love to see videos from that! Actually can't wait to see any of your videos! Oh, just saw you in Niko's video that came out today, so they didn't leave you out!!!! Good Luck!!!
Shawn thank you for your consistent professionalism. Your idea to include maintenance will broaden your viewership and provide more interesting content. Thank you very much for allowing me to tag along. Thank your team also. Best wishes in Hawker training. Be safe and God bless as always. Chip
Thank you, Chip!
Something a bit different fella. Nice work. Looks like your employers are slowly softening their rules on a few things. Thanks boss 🤣🤣 keep me coming and thank you.
Shaun,
Thanks for the introduction to your mechanic.
I can sense a lot of fun ahead.
Cheers,
Rik Spector
Love getting to see different aircraft. For me...if it flies..I wanna see it !! Thanks for the great vids.
Awesome! I love the Citation X
As a retired corporate pilot/ A and P, this video really hits home for me. Thanks. Too bad you didn’t get your hands dirty and help out. LOL
Morristown, oh sure, I move from NYC and now you start going to Morristown. BTW, I flew HS 125-700’s and 800’s back in the day. Very interesting lift dump.
Yes indeed...that lift dump system will turn those wings into barn doors to slow it down!
Oh yeah...turns those 45deg flaps into 75deg slabs.
That was nice to see, we should see some of the parts and how they work if we rely on them. Anyway, I don't know about others, but I like this now and again. Nice and short as well. Thanks.
Taking 'Tech Tuesday' or thereabouts to a whole new level..and We Love this stuff! So more please. And a quick question for Adam, when is he going to have his guys take care of that cable for the throttle(left throttle) in that G4 you were flying in a lot, that moves radically from the other in auto mode ;) sorry..just ribbing on him a bit(which means welcome to the club), and glad to see him and the mechanics graciously contribute to the channel.
niceguy217 When the G-IV comes in for inspection we will look into the auto throttle cables of the crew writes it up. Otherwise they have a life limit and get changed per the manufacturer.
@@adamdarnell7996, ah Adam those pilots aren't going to write things up..this from a former corp. pilot myself ;)..lost medical, but I remember coming in and wanting to do as little paperwork as possible..same as those guys. And the auto throttle thing is from the videos, a bunch of people asked why the left 1 was cycling much more than the right. Also they probably haven't written up how that same bird I think has a touchy right brake. And if they don't write it up..it means it's not bothering them to bad, but had to get those often mentioned items in there. As I said..Welcome to the club.
great work Shaun
Nice to see some of the bare bones inner workings. Thanks for all you share. Always fun to watch.
Best Tech Tuesday video yet. Keep it up man, you are running a solid channel.
Great video. Good luck in Morristown, weather finally turned nice up here.
Excellent idea for a video series!!
Great idea for videos, these thinks only fly because of the work of the guys behind the hanger door.
Love tech Tuesday's Shaun, thanks to you an your employer for sharing this. Interesting they don't repair the brakes, they just switch the whole assembly out.
It is all about time. We don’t want our aircraft down for maintenance for very long. To rebuild the brake would require a couple of days, to change a brake takes a couple of hours.
Triple Nickel North East huh? Can't wait. I almost feel like I was there, Great video Adam seemed pretty cool, Best of luck in the Hawker.
Good job Shaun. The brake system on the G IV I would think is pretty close to the brake system you showed us. Congrats on the training on the hawker. Looking forward to seeing you flaying that bird. See you soon.
GREAT VIDEO, SHOULD MAKE TECH TUESDAYS EVEN MORE AWESOME.
How about finding a customer that will discuss the charter process? Why they Charter, and their experience flying with you?
This was GREAT, Shaun! I'm a automotive & small engine tech, so this is right in my wheelhouse. Never touched or have seen any mechanical part of any aircraft in my life (aside from your videos), so this is super interesting to me!
Are those carbon brake shoes? I've never seen a friction material that looked like that in the automotive world. I know carbon withstands crazy temperatures, but does not work very well when cold, so I don't think it is here. NASCAR, and other racing applications use them.
That return brake line blew my mind - what a great idea, to keep the fluid cool! I've never seen that system before in my life! Super important slowing a jet from triple-digit speeds, I'd imagine. Boiling the fluid during landing would end very badly for the aircraft, and possibly the passengers. I bet you could spend an entire week on jet brake systems - there's probably a TON of info there that I have no idea about. I'd love to see the master cylinder, and how the return fluid comes back - is it pumped back, or just naturally pulled back by the master? Lots of great stuff here, Shaun!! THANKS!
Smitty Smithsonite carbon shoes. Yes. They dissipate heat much faster.
@@adamdarnell7996 - Thanks, Adam!
I like the curve ball you just threw....keep em coming.
Thank you for taking the time to answer questions
Variety is always good 👍
Oh this is cool. I'd like to know what the quality assurance protocols are like for aircraft repair and maintenance. Also, it would be totally cool to see the whole (brake) job done step by step.
Plz, more details.
- do the brakes fail applied or released? a stuck brake during taxi might be better than no brakes at all when landing. or is the differential braking action a bigger problem?
- can you land with the parking brake on?
- do the valves control how much oil gets pumped in or how much gets released? (inlet or outlet)
- are there emergency valves that prevent any more oil from getting pumped in if there is a serious leak?
- how long are normal cooling down times and after a no-reversers landing?
- can you do a successful landing with zero brakes? is minimal brake use a common way to shorten turnaround times?
- do gulfstreams have auto braking that adjusts the brakes to the runway length used, like the 'big boys'?
Lots of questions here.
The brakes usually fail when applied but they default to released. If there is no pressure they are released.
If you land with the parking brake applied you will be changing ALL of your main wheels. Very bad idea but I have seen it happen.
Most corporate jets with Thrust Reversers do Zero Brake landings all the time.
There are fuses in the hydraulic lines that slam shut if a rapid decrease in the pressure is sensed to prevent a complete loss of fluid.
I think I got them all.
@@adamdarnell7996
Thanks a lot. These aviation vids are a lot of fun.
“The cream always rises to the top” always reminds me of when macho man pulled out the coffee creamers during an interview.
No Nascar tire change for the X! Love the videos.
Great to see! I'd hate to be the guy paying the bill for that new brake assembly, though! I've had the good fortune to fly on a Citation X a number of times, and it's a real rocket.
Enjoyed the video, it would have been great to see more of the whole brake change process. Tech question, why is it that on a lot of jets the tiller steering is only on the pilots side and not in the middle where either pilot has access to it?
Capt. I’m not sure why it is designed that way. Possibly because a lot of smaller jets are single pilot. Or possibly because the designers had enough stuff in the middle for both to use. Not sure. Good question though.
Thanks for the response. I've wondered about this because years ago there was an incident where the captain of a commercial flight became incapacitated and the co-pilot landed the plane successfully. The passengers were deplaned on the runway because the co-pilot couldn't steer the plane to the gate until the captain was attended to by medical staff.
Oh, now this will be a blast, Thank you both! looking forward to the videos and all the information
Great vid. Let’s see more like this!
Right on Sean good idea on videos
Nice 1 BOB!
Shaun WOW! This is a Great idea!!! Super gracious of Adam and Frank to let us in on how and why these beautiful planes stay in the air!!! Thank you Adam and Frank!!! You guys are awesome!
Shaun are you using a different camera or something? The video is just outstanding! Is so crystal clear and everything just POPS!
I mean ALL of your videos always looks great and I'm not saying that, maybe it's the lighting or something I dont know but great job! Loved the video!
I am soooooo glad you noticed Don!! I just got a new camera, and my first full frame. I'll be showing it off soon. Thank you!
@@CorporatePilotLife I knew it! Right away I knew something was just better, it was jaw dropping clear LoL I cant wait to see what it is because that thing is amazing, it's a keeper! Will be great with beautiful scenery, everything really. Congrats Shaun and nice choice! Have fun in Morristown! Dont forget that new camera! Hehe
Hi Shaun,
thanks again for another interesting video. Thanks also to Adam and Frank and also a big thank you to your company who appear to be very accommodating and I would just like to say a big thanks to them also. A quick question to Adam if that is ok...feed and return on the brake lines? Would this be for cooling purposes?
Keep em coming Shaun and to your co-workers.
regards
Gareth
ghl The brakes use the A hydraulic system which is also used for many other systems. The feed and return system is because of the other systems needing pressure as well.
@@adamdarnell7996 Thanks Adam, it makes sense to me now!
regards
Gareth
Great video. While watching a question popped into my non-airplane head. How the heck do you jack up an airplane? Maybe quick 30 seconds next time you need to jack one up for another tech video? Thanks very much.
Ed Md In the video you can see the single point jack we use for the Citation. We are able to lift each leg independently.
Adam Darnell Thanks very much for the response. I saw it this time. I love flying but these videos are the closest I’ll ever get to “flying.” Thanks again!
Well done sir
This is great, I'm looking forward to lots of new content from you!
A couple of questions I always wondered is with the jet engine. Does the jet engine typically make hot section and TBO, or do you usually have to do it earlier than what the manufacturer states? Also, what does these inspections and rebuilds usually cost?
Most engines make the inspection cycles with no issues.
The pricing depends on the engine. G-IV is roughly $1.5mil for a Mid-Life/Overhaul. The Hawker is about $250,000.
AWESOME!!! Now to get my brain going on what to ask in A&Pish.
Love it, more please
After seeing the comment section light up with questions for Adam...seems like a live stream with him might be a good idea.
I was actually thinking the same thing!
Great video! Though brake lines are cool and all, I was kinda hoping since you had the brake removed and accessible that you would actually show the relationship of the rotor and stator on the brake assembly. I spend sooo much time trying to explain how all that works when talking to car people, that a video showing that would have been very helpful. Plus you also had access to the back side of an installed wheel assy to show how the rotor interfaces with the wheel. I would love to make video's like this myself, but I'm currently working in helicopter test flight maintenance right now and forbidden to bring a camera into the hanger let alone on the aircraft.
The routine maintenance you perform in between aircraft flights. Also, what is the annual scheduled maintenance dictated by FAA? Any nerdy facts that pilots may not know.
Grate videos Shawn. I would like to see a breakdown of your navigation system, soup to nuts.. Along with the Auto Pilot interface. Thanks
Would like to see the ACM/VCM units and/or PACK. Also... How much grease is too much grease?
XPoChangLinX the only time you can have too much grease it when it stains the paint.
Thanks for the great video Shaun.
Adam, I would like to know how you got started in aircraft maintenance, your background and such. Thanks
phshon My dad had a plane and aviation has always been in my blood. I was a US Marine Flight Engineer on KC-130 for 8 years and got my A&P when I got out. Have been in corporate aviation pretty much ever since.
Adam Darnell thank you for your service
@@adamdarnell7996 Can't do a Khe San landing in a G-IV though!lol!
It would be great if there were a follow up on how that brake system exerts force on the disks or drum? Maybe a link to an expanded view would help a dummy 101 like me:)
Great video. If you're ever in the area of KBLM let me know...i'll take you to lunch or dinner.
Very similar to the F-18 A-G segmented rotor system and emergency brake shuttle valve too.
Yes, the lines from the bottom of the shuttle valve are pneumatic emergency brake lines rather than returns, but still a good video. X's a good aircraft.
@@bobby808 The shuttle valve on the Hornet is direct emergency pressure. Not pneumatic like the X. It swaps over when HS-2 pressure is lost.
Can you do a video talking about the pressurisation system, how the outflow works and why a cabin may suddenly depressurise.
I covered some of that in this video: th-cam.com/video/R8XustG9aEE/w-d-xo.html I can definitely make another getting more detailed though
Awesome video Shawn really like learning about air planes no matter what the make. Maybe someday you could do a video of a engine and explain how some parts work
That's definitely on the list!
Thanks CPL
What is the required process for testing those new brakes? Joyride? 👍
TBolt We bleed them and kick it out the door. No break-in required.
Adam Darnell Thank you for the response! Although, a test flight would be more fun. 😀
TBolt true. I have been on many test flights.
Hey Sean was just wondering if you fly anymore , hardly see any more videos
I have been flying, but it's been so busy that I haven't had time to do the editing. I have a new video coming out either later today or tomorrow morning.
Hi: The Gulfstream left throttle seems to actuate in auto pilot mode much more then the right one does. Any reason for this? Thanks for the great video's.
Those brakes look so tiny but I've been on 787 line for the past month standing next to their wheels and brakes haha. Love the change of pace getting to see the X!
yeah...a bit of a size difference there!
I like these little tech videos. Citation X - happens to be the fastest business jet with MMO .935. They stopped making them last year though.
When the Citation first came out our A&P called them the Cesspool Slowtations. He always had a good one to tell
Thanks for keeping the Tech tips coming. Will the Hawker training give you an opportunity to fly out of Florida?
Yep! The Hawkers are based in Palm Beach, so less airline travel
Great Video Shaun. I have a question. When you are in the flight levels in a pressurized plane, where does the oxygen come from or is it generated from a device? I could google it but have always been curious. I may not be the only one who is wondering. Hope the new company is going well!!
There is Oxygen in the atmosphere all the way up to FL70 or so.
No special generation device is needed when we fly at FL35-45
Yep...the engines compress the outside air and send it in to the plane. There's plenty of oxygen, it's just very low pressure
Question for your DOM. If one of your Gulfstreams need to go to the MFGR what is the reasoning behind sending them to Georgia vs Long Beach? Is it what’s closer to the plane or does Gulfstream do different maintenance at different locations?
Depends on a few things. What are we having done? What does the facility schedule look like? Will we need engineering? Where is the aircraft based? Gulfstream does different things at each of their many facilities.
Great video!
Super cool video, love it. Shaun or Adam what is the brake balance on a plane like the Citation or the Gulfstream? Also how are the brakes plumbed for safety in case of line failure? I imagine the brakes have at least two systems so you don't lose complete braking if you blow a seal or line?
Not sure what you mean by brake balance. The brakes are split on the rudder pedals LH/RH. There are multiple hydraulic systems that provide pressure as well as an emergency accumulator if you lose all normal system pressure. There are also fuses in the lines to prevent a massive leak.
@@adamdarnell7996 Thank you Adam, if you lose a line on say a right pad the inline fuse stops fluid passing allowing the rest upstream to work? What I meant by balance is if you pushing on braking pedals and it only controls R/H side then you would get a dangerous pull to one side but if the balance from the pedals did half on each side and you lost a pedal you would still get controlled stopping?
If you press only the right pedal, only the right brakes will activate. I do this when taxiing to make a sharp turn. One of the perks of being an A&P.
As an ex B-52 mechanic, that was interesting. How about some O2, Pressurization, anti-ice tech videos. Thanks.
You coming to the KY Derby?
Nope...I got the weekend off
Excellent video! Always interesting to see internal working. How often does Shawn break you aircraft, lol. Do y'all do your own major inspections, ie. C checks
Sea Travel we do as much maintenance as our schedule allows. We prefer to keep it all “in-house”
Notice he didn't answer how often I break the planes...LOL
Can’t dime out my pilots. Shaun is good at telling me when the planes don’t act nice. ;-)
how do you keep the nuts behind the yokes from coming loose?
Alcohol and Netflix
hey mates. question. with fadec in jets. why are piston engines with fuel injection still need to be leaned out for cruise.
I am an engine guy in cars etc. and basically we always tune engines for 13:1 and cruise at 14.1 this is done automatically by the Engine management. based on load throttle position and time spent at the same engine speed.
why do piston planes not have this. it seems like it would benefit pilots much more as its crucial for engine performance/ longevity and safety
Jack,
I don’t have a good answer for you other than it would be cost prohibitive to put a FADEC system on Smaller piston aircraft. The FADEC computer alone costs more than most new piston aircraft.
@@adamdarnell7996 I dont believe that for a second. the best ECU for piston engines are made by Haltech in australia or MOTEC
they have inputs for cylinder temps, exhaust temps , cyl pressure, they have flex fuel sensors so they detect the octane/alcohol in fuel and adjust engine performance based on fuel quality.
this setup costs 3 thousand dollars. if it was made in bulk much cheaper
so could defo be done
you would also have a 4 position switch
posit 1 ground
posit 2 Climb/max power
Posit 3 E cruise
Posit 4 Max Cruise
No guess work nothing.
plane companies would love it because engines wld be looked after soo much better. less failures, safer aircraft. win win
How does that brake assembly not rotate on the spindle? I didn't see anything obvious that would be strong enough to keep that assembly from rotating once the brakes are applied.
It is held in place by the axle nut torque.
@@adamdarnell7996 thanks. Being a diesel tech by trade, that really means that we're relying on the technician to do his job to not have a brake failure or a wheel off. I obviously know nothing about aircraft maintenance, but that doesn't seem to be the best option to keep that assembly in place.
Hey Shaun, is the Citation X on your list of planes you would like to fly? Do any of your friends fly the X or X+? How does it fly? Good luck with the Hawker training!
I would certainly love to fly the X, but haven't had the chance yet. I have a few friend that fly it. They all love flying it, but the cockpit is pretty tight.
@@CorporatePilotLifedo the ever get the chance to fly at fl510? Or above .9 mach? I'm sure it'll drink that fuel quick
Hey Adam, I heard somewhere that ABS came on airplanes long before on cars. Do you think that’s true?
Shaun, tell us more about the Hawker training?