Ahh such a shame XP12 crashed, yet another Vulkan Device Loss error! Regardless it was an awesome flight with an awesome addon, credit to VSKYLABS for creating an authentic SR71, excited to see how the addon develops. We'll try another flight again very soon! 🙂 FD2S
Definitely a great flight and I was glad to see it. Hopefully I'll be available to catch it again when you retry. Also, since I was mentioning it in the chat during the flight itself, I've done a bit more digging into this model, ran some calculations, and tried flying a few legs in it, and I'm pretty sure the compressor inlet temperature model is buggy. In reality, keeping CIT below 427C would be the reason you couldn't just keep accelerating to 3.3+ like you did, but this flight and atmosphere model end up hitting and passing that at something like mach 2.5, which isn't realistic. In the actual aircraft, if you found yourself at min burner and accelerating past 3.2 with CIT creeping up past 427C, you'd increase climb to keep mach at 3.2-3.3 and CIT to 427C, even at the cost of allowing the EAS to creep downwards a bit, but you can't model that in the sim right now because even at realistic cruise conditions, the CIT gauge is already pegged. Regardless though, this is a fun model to play around with - I'm glad I discovered it through this flight and I look forward to watching you play around with it some more (and doing the same myself)!
@@clapanse thanks for all the input during the stream! It sure is a steep learning curve but rewarding when you get it right! It’s great to see quite a lot works well and no doubt VSKYLABS will keep improving on it!!
at about the 30 min mark someone had a membership anaversery and said return precontact, the joke (about dcs) is that by the time you are just about to hook up to the fuel line, the tanker goes return precontact, and you have to do the whole aproach again.
Hi there! It was fascinating to watch! To add that you can execute the entire climbing profile (after refueling) using the autopilot, with the speed-hold mode (KEAS). In short: When using the KEAS HOLD mode, pitch hold is released and the pitch autopilot maintains the existing airspeed until a KEAS bleed line is intercepted. Then, the autopilot follows a schedule that bleeds off KEAS, from 450 to 380, as Mach increases from 2.6 to 3 plus. In a normal climbing profile, when performed with the autopilot engaged on the KEAS mode at 450 KEAS, once intercepting the Mach 2.6 line, the autopilot will start bleeding KEAS in the following rate: For each Mach +0.1, decrease of 10 knots KEAS. This works very closely to the real-world SR-71A actual operations, and it is quite 'satisfying' to see it all happens automatically in X-Plane 12, in real time, while reducing pilot workload extensively. It also a useful procedure to try and exceed maximum Mach number. The SR-71 was not power-limited at cruise altitude. Cruise was usually done using *minimum* afterburner. In cold weather conditions, the pilot had to keep on climbing to maintain speed limit at minimum afterburner. Interesting (true) story: B.C. Thomas (American hero and a true gentleman, the SR-71 pilot who spent most time; 1,217 hrs and 18 min. in the cockpit of the legendary SR-71) who contributed a lot of his knowledge and 1st hand references with on-going discussions with VSKYLABS during the development of this project), mentioned in one of his interviews (FlyPast Magazine October 2023 issue), the following: In short, he explained that he had to exceed 86,000 ft in one flight (the highest altitude he ever flown in the SR-71), which is above the manual limit. It was a very cold day and they had contrails which he could observe in the aft-facing periscope. Usually, these are not formed above 50,000 ft, but in extreme cold conditions, they could. He was in minimum afterburner for the cruise, the speed was increasing. He didn't want to take an engine out of afterburner ("because you may not get it back on"). So he had to climb higher to get the speed down and also to get rid of the contrails. So he got to around 86,000 feet, describing it like "riding a while horse" Again, enjoyed your video very much! 😎
@@vskylabs thanks a lot for your detailed comment! I had so much fun preparing this and learning how the SR71 was operated. The manual was useful along with your quick tip screenshots! I still have lots to learn but will take on board your tips for next time, hopefully no issue with XP12 for my next SR71 flight! All the best! :-)
The SR-71 is a marvel of engineering. If you want to learn more about it, read the memoir of the man who developed it at Lockheed. Its Called Skunk Works by Ben Rich
Woah!Just discovered this page as I was browsing SR-71 videos. Gutted to have missed the live broadcast but hey - I only missed it by 6 days. 😊 Thought I might manage an early night but now I'll have to watch all of this to see if you manage to land it. Thanks for posting!
Unfortunately the sim crashed so wasn’t able complete the flight! Had fun doing a short visual circuit though. The team are hoping to build the most realistic SR71 simulation for a desktop sim, glad you enjoyed the show!
@@flightdeck2sim I did - and that was a very sweet, held-off landing. The whole circuit (with you talking us through it) took me back - except mine were done in a glider, not a Blackbird. ;)
Excited to vuy this module in the future, really excited you vhecked it out. Highly recommend you check oyt the colimata F-104 as well - Similar "flight test platform" kind of module.
I can't understand the unreliability that you are experiencing... I have not had one sim crash since installing XP12... maybe something in the aircraft is incompatible or something else running which is causing the issue. I only use Toliss and inibuilds acft but have absolutely no issues ever. Still a great stream and thanks for your time as always.
Hello captain. I have a question about the ZIBO 737 in XP11. It seems like the drag model is too excessive. I need roughly 60% N1 to maintain my approach speed on an empty aircraft. Any way to fix this?
Wow one of if not the best SR-71 sim flying seen way better than mine you can cheat the air refuelling actually by setting the tank to full thru the aircraft settings at FL300 Sorry for the sim crashing on you
Ahh such a shame XP12 crashed, yet another Vulkan Device Loss error! Regardless it was an awesome flight with an awesome addon, credit to VSKYLABS for creating an authentic SR71, excited to see how the addon develops. We'll try another flight again very soon! 🙂
FD2S
Definitely a great flight and I was glad to see it. Hopefully I'll be available to catch it again when you retry.
Also, since I was mentioning it in the chat during the flight itself, I've done a bit more digging into this model, ran some calculations, and tried flying a few legs in it, and I'm pretty sure the compressor inlet temperature model is buggy. In reality, keeping CIT below 427C would be the reason you couldn't just keep accelerating to 3.3+ like you did, but this flight and atmosphere model end up hitting and passing that at something like mach 2.5, which isn't realistic. In the actual aircraft, if you found yourself at min burner and accelerating past 3.2 with CIT creeping up past 427C, you'd increase climb to keep mach at 3.2-3.3 and CIT to 427C, even at the cost of allowing the EAS to creep downwards a bit, but you can't model that in the sim right now because even at realistic cruise conditions, the CIT gauge is already pegged.
Regardless though, this is a fun model to play around with - I'm glad I discovered it through this flight and I look forward to watching you play around with it some more (and doing the same myself)!
@@clapanse thanks for all the input during the stream! It sure is a steep learning curve but rewarding when you get it right!
It’s great to see quite a lot works well and no doubt VSKYLABS will keep improving on it!!
at about the 30 min mark someone had a membership anaversery and said return precontact, the joke (about dcs) is that by the time you are just about to hook up to the fuel line, the tanker goes return precontact, and you have to do the whole aproach again.
Hi there! It was fascinating to watch!
To add that you can execute the entire climbing profile (after refueling) using the autopilot, with the speed-hold mode (KEAS). In short:
When using the KEAS HOLD mode, pitch hold is released and the pitch autopilot maintains the existing airspeed until a KEAS bleed line is intercepted.
Then, the autopilot follows a schedule that bleeds off KEAS, from 450 to 380, as Mach increases from 2.6 to 3 plus. In a normal climbing profile, when performed with the autopilot engaged on the KEAS mode at 450 KEAS, once intercepting the Mach 2.6 line, the autopilot will start bleeding KEAS in the following rate: For each Mach +0.1, decrease of 10 knots KEAS.
This works very closely to the real-world SR-71A actual operations, and it is quite 'satisfying' to see it all happens automatically in X-Plane 12, in real time, while reducing pilot workload extensively. It also a useful procedure to try and exceed maximum Mach number. The SR-71 was not power-limited at cruise altitude. Cruise was usually done using *minimum* afterburner. In cold weather conditions, the pilot had to keep on climbing to maintain speed limit at minimum afterburner.
Interesting (true) story:
B.C. Thomas (American hero and a true gentleman, the SR-71 pilot who spent most time; 1,217 hrs and 18 min. in the cockpit of the legendary SR-71) who contributed a lot of his knowledge and 1st hand references with on-going discussions with VSKYLABS during the development of this project), mentioned in one of his interviews (FlyPast Magazine October 2023 issue), the following:
In short, he explained that he had to exceed 86,000 ft in one flight (the highest altitude he ever flown in the SR-71), which is above the manual limit. It was a very cold day and they had contrails which he could observe in the aft-facing periscope. Usually, these are not formed above 50,000 ft, but in extreme cold conditions, they could. He was in minimum afterburner for the cruise, the speed was increasing. He didn't want to take an engine out of afterburner ("because you may not get it back on"). So he had to climb higher to get the speed down and also to get rid of the contrails. So he got to around 86,000 feet, describing it like "riding a while horse"
Again, enjoyed your video very much! 😎
@@vskylabs thanks a lot for your detailed comment! I had so much fun preparing this and learning how the SR71 was operated. The manual was useful along with your quick tip screenshots! I still have lots to learn but will take on board your tips for next time, hopefully no issue with XP12 for my next SR71 flight!
All the best! :-)
My grandpa helped design the SR-71!
The SR-71 is a marvel of engineering. If you want to learn more about it, read the memoir of the man who developed it at Lockheed. Its Called Skunk Works by Ben Rich
Woah!Just discovered this page as I was browsing SR-71 videos. Gutted to have missed the live broadcast but hey - I only missed it by 6 days. 😊 Thought I might manage an early night but now I'll have to watch all of this to see if you manage to land it. Thanks for posting!
Unfortunately the sim crashed so wasn’t able complete the flight! Had fun doing a short visual circuit though. The team are hoping to build the most realistic SR71 simulation for a desktop sim, glad you enjoyed the show!
@@flightdeck2sim I did - and that was a very sweet, held-off landing. The whole circuit (with you talking us through it) took me back - except mine were done in a glider, not a Blackbird. ;)
Excited to vuy this module in the future, really excited you vhecked it out.
Highly recommend you check oyt the colimata F-104 as well - Similar "flight test platform" kind of module.
Nothing beats that feeling of flying a mile per second…
I can't understand the unreliability that you are experiencing... I have not had one sim crash since installing XP12... maybe something in the aircraft is incompatible or something else running which is causing the issue.
I only use Toliss and inibuilds acft but have absolutely no issues ever. Still a great stream and thanks for your time as always.
Hello captain. I have a question about the ZIBO 737 in XP11. It seems like the drag model is too excessive. I need roughly 60% N1 to maintain my approach speed on an empty aircraft. Any way to fix this?
i love this thing its incredible
How does one work the flight plan for the Blackbird?
XP rage!
When I'm not flying MSFS I still find myself in XP11 for numerous reasons. Seeing the cockpit clearly being the main one. Crashes also. Too bad.
Wow one of if not the best SR-71 sim flying seen way better than mine you can cheat the air refuelling actually by setting the tank to full thru the aircraft settings at FL300 Sorry for the sim crashing on you
Thanks for the kind words! Such a shame the sim crashed, will try again soon!
Need a redo flight with actual landing
Real pilot referring to real life instead of REALITY! Your a joke.
Huh?
you been smoking spice?
@@g7usl come again?