We had some great entries for the challenge, but yours was a clear winner. I honestly didn't expect you to participate, but I'm really glad you did. You killed it!
That actually would not and could not happen, as he usually leaves using the same gravity assist in the other direction. So upon entry, the extra energy is "stored" in Tylo, and is "withdrawn" when leaving.
dontcheckmychannel Actually no the other person is correct, every time you do a gravity assist you’re stealing energy from the planet and lowering its velocity to gain more velocity on your craft or redirecting velocity
I like how you can power ISRU off of fuel cells. You're using electricity to turn water into hydrogen and oxygen, and then burning them to make electricity, somehow making a net gain
Pretty sure that plane outweighs my mining bases lol. All just inside of that fuselage (which is honestly bigger than it first looked to me, I realized from perspective relative to parts I'm familiar with the size of as I watched the video).
I think this started as a challenge on the forums, but it just required you to fly a plane for as long as possible. Regardless, I never thought I'd see something like this. Very cool!
What about a low pass of the sun or a flyby of every celestial body And for the landing what if you landed at the old ksc or at the hidden desert temple
Duna has no oxygen in atmo for air-breathing engines. You'd have to rely on the lvn engines, which is probably extremely challenging with this design. The atomic engines still get good isp (600s iirc?) because of the thin atmosphere, but that's paired with the extremely low lift for your wings, too. For a design with super low thrust (and lift) to weight ratio it would be quite the challenge.
I just realized I misread your comment... but yeah, I would imagine it would be very hard, especially with how unstable those little landing gears are to boot... makes getting past your stall speed all the more challenging
i have already gone to Duna and back on a kerbal powered space tricycle, and have, through vigorous testing, concluded that i cannot land on 3 bodies. Eve(atmo too thicc to allow me to go up from big gravity), Jool(same as Eve), and Kerbol(obvious reasons, plus gravity)
consider a hydrofoil SSTO for maximising tons per rapier, put some control surfaces on robotic pistons, extend them into the water, and adjust their deploy until its just them in the water. There's a lot of water along the equator after all!
It would be funny if you somehow managed to take it out to Eeloo and then all the way back down to Moho, and then back to Kerbin. It would take about a millennia worth of fly-bys though.
Out of all destinations I think this plane can go to Bop, Pol, Gilly, Ike or, possibly, Vall or Eeloo (as well as Mun and Minmus, of course). But personally I'd be really impressed if you can go to Duna.
About pushing that 48t/rapier ratio, there's a lot of flat ground around the dessert launch complex; much more than at KSC. I think you could 'launch' there, taxi to the western hills, and have a very long takeoff run eastward. The flip side is there's no sea at the end, and it's not at the equator so you would get slightly less boost from the planet's rotation. Perhaps instead of reducing engines, you could reduce wing mass by using the extra space to reach a higher takeoff speed. The complex is good for Minmus missions. It's at a lattitude which corresponds to Minmus's orbital inclination. If you time it so that a line from the launch site through the center of Kerbin intersects Minmus orbit, you need little if any a plane change. At least, that's what I got from lining it up that way, launching rockets from the dessert launchpad, and steering for a 90 degree heading. Edit: I've got my first Laythe landing coming up. It wasn't really a planned mission. I was testing a new spaceplane, saw how much delta-v it had left, and as it was in my "test bin" save which doesn't have any other pending misssions, took it all the way there, ending up with little fuel left. Being fairly new to gravity assists, the only one I could get from Tylo put me into a retrograde suborbit, (if that's a word,) but it was such a narrow ellipse that I knew it would take little delta-v to reverse the direction at apoapsis. I was able to get a Laythe encounter with the same maneuver, and I hope aerobraking will do the rest.
a factor with the dessert site is its higher altitude, this does increase the efficiency of rocket engines, as well as lower drag, but it does make jets less powerful and you get less lift from wings it's all very slight, but it might make a difference
A year after I first watched it, I realise what an extra-big flex this video is: just adding a drill would make it so much easier! :) Also, I'm having trouble with roll stability which seems to be related to the vertical stabilizer too. It's so tempting to save a few kilos by skimping on it, isn't it? But even when I don't, things can get weird. I once fitted a tiny elevon behind a strake for the vertical stabilizer, and the long fixed strake played merry havoc with stability in turning. The plane oscillated in the yaw axis and I had no idea why until I turned on the aero visualization and saw that in a steep bank, the strake was alternately generating up-force and down-force.
You’re probably not gonna see this/know by now, but even though 1 unit of ore converts to 1 unit of fuel, a unit of ore weighs 2x as much (if I recall correctly) as a unit of fuel/oxidizer Or maybe it was just different in that version
You could combine this with your advanced manouvres tutorial, and create a tutorial about how to set up multi grav assist routes, or just a single assist tutorial but in a more comprehensible fashion that ep.0. My choice of destination would be an atmosphereless planet or moon like Tylo to see how this preforms without the wings and rapiers
Hey brad. Been a sub for some time and love your channel. Have an idea. New campaign. Science or career. (Science may be easier). But start off ground zero. Research as much as possible to build a Whistance Wonder and only fly-by all the bodies. Not land. Then return to KSC in Bill’s usual fashion. The mission can only be the “maiden flight” for the KSC. is that possible??
What an absurd idea, I love it! :D Did you consider swapping one RAPIER for a Panther? You'd lose 50-75m/s top speed but you'd have an engine that can generate electricity up til mach 3.5, 0.8t less dry mass, and a plane that has a significantly higher TWR at subsonic speeds likely saving you some wing mass as well.
Back in your video about the 2.998 ton rocket to Duna and back from a couple years ago, I noticed that you arranged the craft in a way that the Kerbal was between 2 fuel tanks. How did you create that?
I can't believe it's an oversight that you've left the oxidizer topped up, even though you're only using liquid fuel in engines. Or is that a backup just in case you need an extra kick from the RAPIERs?
the fuel cells needed to power the ISRU need to consume Oxidiser and Liquid fuel, its just that they consume slower than the ISRU produces, so it seems like its not being used. (:
There are 2 reasons for this - 1) The challenge rules stipulate that if you're running an ore-craft with LF/OX the only tank you're allowed to have on board is a dumpling tank (this ensures that there is something for the ISRU to fill into) 2)The Fuel Cells require an LF/OX mix to run.
i have a somewhat hard time with SSTOs. sort of. well, i mean, i can make and fly basic ones that are super ordinary, but any time i do anything that doesnt look like a shuttle or regular plane, it seems to just not work well for me and its frustrating. lol.
Speaking of stratzenblitz, does anyone know if his next video is going to use excessive part clipping like the jool plane, because that still feels really cheaty to me.
You sure that's right Bradley? The speed of sound increases with altitude? In the real world it decreases: the more dense the medium, the faster sound passes through it. I thought the reason air breathing engines struggled high up was that the air was thinner and so they couldn't get enough oxidiser but lower down they have to combat air resistance and high drag.
Temperature decreases with altitude only up to ~10 km on Kerbin, after which it increases again. Speed of sound is independent of pressure, and gets higher the higher the temperature is, so between ~10 km and ~40 km (temperature minimum and maximum) the speed of sound in Kerbin's atmosphere increases with increasing altitude. The same sort of temperature profile happens in Earth's atmosphere too, due to the ozone layer absorbing solar UV radiation and heating up from it.
We had some great entries for the challenge, but yours was a clear winner. I honestly didn't expect you to participate, but I'm really glad you did. You killed it!
Hey dude your videos are awesome!
Good content even a year later!
how is there only 2 comments on this comment lmao
You're in the Jool system so often these days, you might steal all it's moons kinetic energy and drop them straight into Jool.
My favorite comment!
That actually would not and could not happen, as he usually leaves using the same gravity assist in the other direction.
So upon entry, the extra energy is "stored" in Tylo, and is "withdrawn" when leaving.
@@dontcheckmychanel I'm so sorry, can you ever forgive me?
@@lastfirst5863 NO
dontcheckmychannel Actually no the other person is correct, every time you do a gravity assist you’re stealing energy from the planet and lowering its velocity to gain more velocity on your craft or redirecting velocity
Next: Drain Valves to and from Eve
Great idea
Bradley can do that
And the vessel is single stage
So,
single stage to Eve and back with only using drain valve and liquid fuel,
Named 'SSTEABWOUDVALF'
I would like but this comment has 69 likes...
@Mudkip909 So,
Single Stage to Eve and Back with Only Drain Valves and Liquid Fuel in Minimum Weight,
Named 'SSTEABWODVALFIMW'
I *HIGHLY* recommend you go back to Kerbin repeat the mission. You should be able to manage that, and it would be a hell of a flex.
I second that. Serious flex.
@@tejing2001 big ol' *FLEX OPPORTUNITY*.
Almost as flexy as flex tape
I support this. Its very flexual.
Brad: Ore-powered SSTO
Me: can't even Build/Fly an SSTO
same here...
I once built an overkill laythe SSTO, but now I can't build anything.
Just practice, just about a month ago I couldn’t even build a efficient rocket, now i can make a ssto that can go to layth and back.
What i am saying is just practice, you will get it in no time.
same
I like how you can power ISRU off of fuel cells. You're using electricity to turn water into hydrogen and oxygen, and then burning them to make electricity, somehow making a net gain
No one:
Absolutely no one:
Bradley: *I used the ore to collect the ore*
You make this yet all my ssto is capable of is getting Jeb stuck in orbit
Hahaha pathetic
I can get jeb stranded in the middle of the air XD
You get into orbit?!
Brad is the best KSP pilot and KSP builder ever.
Dang, the challenge on stratz's discord has already been absolutely demolished by this submission! How could anyone else compete? We shall see
Remember it’s not entirely about where you go, it’s about the most interesting ore powered craft possible.
danny2462 could
by not even needing ore.
That circularization must be really good, for two announcements! :)
Weird and cool mission, man! Fun to watch!
Just how much stuff did you clip in that fuselage?
Also, as for where to go, I suggest Eeloo!
Pretty sure that plane outweighs my mining bases lol. All just inside of that fuselage (which is honestly bigger than it first looked to me, I realized from perspective relative to parts I'm familiar with the size of as I watched the video).
@@revenevan11 I'm pretty sure that thing outweighs my space cruiser...
He said 48 tons per Rapier. Craft seems to have four Rapiers, so about 192 tons.
though there's not really many places to suggest, is there?
theres moho, eve, gilly, the mun, minmus, jool and its other moons and eeloo as you said
Next: Oar-powered SSTO
I think this started as a challenge on the forums, but it just required you to fly a plane for as long as possible. Regardless, I never thought I'd see something like this. Very cool!
Later: grand tour 1 part
thats impossible
@@k-aerospace we have a genius over here! You win a gold medal!
Jeb's Grand Tour
ladder
Your videos are just incredible Bradley. Thanks so much for making them
Why not the Mohole?
It’s been fairly underrepresented, afaik
Circularizing at Moho is extremely expensive
@@BallistX well, that’s why you do it BepiColombo style and do a bazillion Moho gravity assists before inserting into orbit
@@alt8791 I guess the orbital period's not too bad.
Nicely done! ✅
Rule of thumb: vertical stabilizer needs to be at least as big as the diameter of the fuselage.
Q/Question: Does this Ore-Powered SSTO have refuelling capabilities?
What are the little purple diamonds occasionally coming out of the back of the plane?
the souls of the kerbals. it gets burned tol
They are a graphical glitch with the visual mod pack he uses.
@@space__idklmao
Ah, ok. Thanks :)
>When you one-up everyone on Stratz's server
Cheers Brad, impressive vid as always!
Please take it to Eelo and than Moho. That should turn this mission into gravity assist porn.
Made my Sunday morning with these wacky exercises in maximum efficiency! Thanks for the video :)
Tylo.
Every video, Brad's runway gets lonnger
Bradley Whistance: Intends to go to low kerbin orbit. Delta V left: Goes to Jool and beyond.
This is an example of amazing engineering.
Happened to me, once. Difference between me and Brad: He could get back, too. ;)
@@eekee6034 i feel your pain
Ah yes, a THERMONUCLEAR BOMB with WINGS.
I would never have thought of a design like this. I tip my hat to you sir
Amazing job, as usual. What's causing the pink square anomalies at low altitudes?
Optional question: who is messaging you at 7:49 :P
Brendan the pink squares are a glitch from the mod planet shine
next: entire tech tree unlocked with a single rocket that consists of mystery goo, flea engines and a command pod.
Sadly the extreme part clipping really takes all the fun out of this for me.
This guy could do a ssto in real solar system...
What about a low pass of the sun or a flyby of every celestial body
And for the landing what if you landed at the old ksc or at the hidden desert temple
Take the mission to Duna! How does the ascent change when you cannot run the RAPIERS on air-breathing mode? Is it even possible?
Duna has no oxygen in atmo for air-breathing engines. You'd have to rely on the lvn engines, which is probably extremely challenging with this design. The atomic engines still get good isp (600s iirc?) because of the thin atmosphere, but that's paired with the extremely low lift for your wings, too. For a design with super low thrust (and lift) to weight ratio it would be quite the challenge.
I just realized I misread your comment... but yeah, I would imagine it would be very hard, especially with how unstable those little landing gears are to boot... makes getting past your stall speed all the more challenging
You could do it, but the craft would need to be both light (or have an absurdly large wingspan) and have a ton of intakes.
Can you do a video on how you plan your gravity assists? they always seem so perfect and close and perfect and even more perfect
He once mentioned he often does them on a fixed date.
I would like to see that too.
Nice bumpy landing on Laythe!
If anybody moves a class I comet, it will either be this guy or stratzenblitz
Next: doing a grand tour with all landings and moons without engines of control surfaces
Tbh that sounds like Spiffing Brit territory: an exploit powered spacecraft. Full on kraken drive.
i have already gone to Duna and back on a kerbal powered space tricycle, and have, through vigorous testing, concluded that i cannot land on 3 bodies. Eve(atmo too thicc to allow me to go up from big gravity), Jool(same as Eve), and Kerbol(obvious reasons, plus gravity)
consider a hydrofoil SSTO for maximising tons per rapier, put some control surfaces on robotic pistons, extend them into the water, and adjust their deploy until its just them in the water. There's a lot of water along the equator after all!
My dyslexic brain read *Oreo* powered SSTO. Was very disappointed.
It would be funny if you somehow managed to take it out to Eeloo and then all the way back down to Moho, and then back to Kerbin. It would take about a millennia worth of fly-bys though.
I hope Bradley's health is improving and he is staying safe.
Damnit! He beat us again!
loving the random MissingTexture blocks coming from the craft every so often. Why is that?
Next destinations: Eeloo and the moons of Kerbin
bran whistance is a godamn angel
I think Pol would be a cool destination, also great video 👌
11:09 Nani! Kansei Drifto?!
Centripetal acceleration is not what is helping you, it's what is holding you. You want to use "centrifugal" in that sentence.
Great episode brad, I really appreciate your understanding of KSP I can’t wait to see the conclusion, I’m voting for Moho 🚀.
Out of all destinations I think this plane can go to Bop, Pol, Gilly, Ike or, possibly, Vall or Eeloo (as well as Mun and Minmus, of course).
But personally I'd be really impressed if you can go to Duna.
About pushing that 48t/rapier ratio, there's a lot of flat ground around the dessert launch complex; much more than at KSC. I think you could 'launch' there, taxi to the western hills, and have a very long takeoff run eastward. The flip side is there's no sea at the end, and it's not at the equator so you would get slightly less boost from the planet's rotation. Perhaps instead of reducing engines, you could reduce wing mass by using the extra space to reach a higher takeoff speed.
The complex is good for Minmus missions. It's at a lattitude which corresponds to Minmus's orbital inclination. If you time it so that a line from the launch site through the center of Kerbin intersects Minmus orbit, you need little if any a plane change. At least, that's what I got from lining it up that way, launching rockets from the dessert launchpad, and steering for a 90 degree heading.
Edit: I've got my first Laythe landing coming up. It wasn't really a planned mission. I was testing a new spaceplane, saw how much delta-v it had left, and as it was in my "test bin" save which doesn't have any other pending misssions, took it all the way there, ending up with little fuel left. Being fairly new to gravity assists, the only one I could get from Tylo put me into a retrograde suborbit, (if that's a word,) but it was such a narrow ellipse that I knew it would take little delta-v to reverse the direction at apoapsis. I was able to get a Laythe encounter with the same maneuver, and I hope aerobraking will do the rest.
a factor with the dessert site is its higher altitude, this does increase the efficiency of rocket engines, as well as lower drag, but it does make jets less powerful and you get less lift from wings
it's all very slight, but it might make a difference
What's with that pink square? I've been noticing it in my KSP install, too.
I noticed it too. Wondering the same things as you.
@LordGroyper Mostly planet and part mods, plus EVE and planetshine.
Raikkappa23 I think it comes from EVE in the new versions.
Really? Planet removing planet shine worked for me
Land on the poles of Duna!
what about a challenge where your community builds a rocket for you and you try to get the absolute max science out of it
I spot "Brad.." in the video list, smile go and make coffee. I am now back, and ready to watch the video (still smiling.)
and I now has cool coffee. Thank you for the entertainment, my suggestion would be Moho, it gets too little love (except for the hole.)
Next video: walking to orbit with only an EVA pack
Make a rocket with a meteor inside. Then put alot of drills on it and make an infinite ore rocket.
A year after I first watched it, I realise what an extra-big flex this video is: just adding a drill would make it so much easier! :) Also, I'm having trouble with roll stability which seems to be related to the vertical stabilizer too. It's so tempting to save a few kilos by skimping on it, isn't it? But even when I don't, things can get weird. I once fitted a tiny elevon behind a strake for the vertical stabilizer, and the long fixed strake played merry havoc with stability in turning. The plane oscillated in the yaw axis and I had no idea why until I turned on the aero visualization and saw that in a steep bank, the strake was alternately generating up-force and down-force.
Part 2: Dres canyon
jesus christ that laythe landing
This man is insane
You’re probably not gonna see this/know by now, but even though 1 unit of ore converts to 1 unit of fuel, a unit of ore weighs 2x as much (if I recall correctly) as a unit of fuel/oxidizer
Or maybe it was just different in that version
Okay hold up! I came here thinking this was "Oreo"-powered SSTO but no. The video is really good though!
Go to Tylo with just closed cycle rapiers, you cant use anything else and no air breathing modes. Sounds like something you could do, and then back
the speed of sound is decreasing the higher you go, but your point wasnt lost of course
The speed of sound on Kerbin reaches a local minmum at 15 km altitude, and is increasing with altitude from 15 km to 40 km.
@@BradleyWhistance ooh I understand...I feel so stupid
When you do these gravity assists from kerbin to eve and so forth, are you doing any correctional burns? Or are the assists planned that well?
idk if it is possible but I suggest moho. The insane dv requirements as well as the natural temperature of moho would make it extremely challenging.
What the heck are the pink squares?? This is the second video they’re in!
*H O W I S T H I S M A N*
Firstly, AWESOME VIDEO
Secondly, please tell me what is the transfer window for the KEKKJ route, and the first instance at that.
This should be interesting
it has been a while since we've seen dres
For some reason, your video didn't appear in my feed this time as it always should have.
You could combine this with your advanced manouvres tutorial, and create a tutorial about how to set up multi grav assist routes, or just a single assist tutorial but in a more comprehensible fashion that ep.0.
My choice of destination would be an atmosphereless planet or moon like Tylo to see how this preforms without the wings and rapiers
Dres would be a great challenge.
Hey brad. Been a sub for some time and love your channel. Have an idea. New campaign. Science or career. (Science may be easier). But start off ground zero. Research as much as possible to build a Whistance Wonder and only fly-by all the bodies. Not land. Then return to KSC in Bill’s usual fashion. The mission can only be the “maiden flight” for the KSC. is that possible??
Oh yea. And gather as much science as possible whilst flying by.
What an absurd idea, I love it! :D
Did you consider swapping one RAPIER for a Panther? You'd lose 50-75m/s top speed but you'd have an engine that can generate electricity up til mach 3.5, 0.8t less dry mass, and a plane that has a significantly higher TWR at subsonic speeds likely saving you some wing mass as well.
TODAY IS A GOOD DAY.
would a biplane design have given you more lift and thus reduce the distance on the take-off
Back in your video about the 2.998 ton rocket to Duna and back from a couple years ago, I noticed that you arranged the craft in a way that the Kerbal was between 2 fuel tanks. How did you create that?
I’d like to see moho
I can't believe it's an oversight that you've left the oxidizer topped up, even though you're only using liquid fuel in engines. Or is that a backup just in case you need an extra kick from the RAPIERs?
the fuel cells needed to power the ISRU need to consume Oxidiser and Liquid fuel, its just that they consume slower than the ISRU produces, so it seems like its not being used. (:
There are 2 reasons for this -
1) The challenge rules stipulate that if you're running an ore-craft with LF/OX the only tank you're allowed to have on board is a dumpling tank (this ensures that there is something for the ISRU to fill into)
2)The Fuel Cells require an LF/OX mix to run.
What's next, EVA propellant to orbit?
What was the square at 0:51?
we need campaign speedrun part 4
i have a somewhat hard time with SSTOs. sort of. well, i mean, i can make and fly basic ones that are super ordinary, but any time i do anything that doesnt look like a shuttle or regular plane, it seems to just not work well for me and its frustrating. lol.
What was the second set of engines that you used?? Sorry I couldn't hear you clearly and I couldn't remember what engines are available on the game
If you add a drill you could go anywhere (except Eve Jool and Tylo)
Go to Dres next
Speaking of stratzenblitz, does anyone know if his next video is going to use excessive part clipping like the jool plane, because that still feels really cheaty to me.
Meanwhile my SSTOs are still Single Stage to Ocean >
Was there ever a part 2, or is Bill still orbiting Laythe?
You sure that's right Bradley? The speed of sound increases with altitude? In the real world it decreases: the more dense the medium, the faster sound passes through it. I thought the reason air breathing engines struggled high up was that the air was thinner and so they couldn't get enough oxidiser but lower down they have to combat air resistance and high drag.
Temperature decreases with altitude only up to ~10 km on Kerbin, after which it increases again. Speed of sound is independent of pressure, and gets higher the higher the temperature is, so between ~10 km and ~40 km (temperature minimum and maximum) the speed of sound in Kerbin's atmosphere increases with increasing altitude.
The same sort of temperature profile happens in Earth's atmosphere too, due to the ozone layer absorbing solar UV radiation and heating up from it.
"why do you say it's an ssto when you also go to other bodies"
"(and beyond)"
SSTA Single stage to anywhere.
Wath are thos pink Squares coming from the Engine?
Are you coming back to finish this? Or did the second part get taken down?
next up: ssto with fuel ejectors
How do you make planes that seem to ignore the existence of drag?
Did he really just end up in jool after ejection burn which wasn't even an ejection burn?
Indeed! The moon assists gets us the rest of the way to an ejection/eve transfer
@@BradleyWhistance I mean without corrections, that seems like way to accurate to be doable in this game.
@@harlisviikmae6240 With enough assists chained together, small corrections are necessary