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Beat my speed record

Azimech
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Azimech

Azimech

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It's time for you guys to beat my speed record.

Rules: build a stock turboprop, set global drag multiplier to 0.1 (I'm comparing with 0.90 performance, my old speed record) and see if your aircraft can go faster than 173m/s (623 km/h). Make the airplane available for download with instructions so we can verify it, after July 6, the date this challenge ends.

Allowed mods:

  • V.O.I.D. (you need any kind of reliable engine speed readout or you'll not be able to build a high performance engine without it, period).
  • Some kind of automatic pilot, best go with Pilot Assistant. SAS will only give you frustration due to engine vibration.
  • Editor Extensions Redux (highly recommended).
  • Part Angle Display.

For examples how to build turboprop/turboshaft engines and vehicles, head over here.

Here's a picture of my airplane doing it.

9V8CTrO.png

 

Have fun and please post your entries, even if unsuccessful!

 

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Azimech

Azimech

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7 minutes ago, EpicSpaceTroll139 said:

Are there any rules for the design of the turboprop? Because I'm working on something that should get really good performance, but it's a bit... unconventional to say the least. 

Well ... I'd like it if it hasn't got floating parts, at least give it some struts if you have to.

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Azimech

Azimech

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Just now, EpicSpaceTroll139 said:

Oh, that's fine, by unconventional what I meant is that I'm effectively turning the engine inside out.

Fine by me, as long as it doesn't have engines on propeller blades.

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sdj64

sdj64

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I did it!  Well, not really.

This design is incredibly impractical, since the bearing is so fragile.  And it won't break any speed records.  But it is BY FAR the smallest working turboprop I've ever seen.  It is powered by 2 Junos, uses thermometer hinges for the bearing, and cubic octagonal struts for the blades!

It also does not work without "ignore max temperature" enabled.

First I tested it stock (just KER) and got up to 61 m/s before the bearing failed (usually it failed much earlier)

PEl92In.png

Then I tested with Time Control, slowed down to 1/2 speed to improve the physics accuracy and reduce vibrations.  The design tops out at 75.7 m/s.

sk8qCsO.png

Instructions to fly:  full throttle, stage, let it take off on its own.  Once it's more than a few meters in the air, raise the gear.  Throughout the flight, keep on soft controls and try to keep the plane level or rising as slowly as possible.  It may take a few tries to reach 60 m/s because there is a random chance that the bearing will fail before that.

https://www.dropbox.com/s/622m5xzwamxg9uh/Biplane - for competition.craft?dl=0

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erasmusguy

erasmusguy

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4 hours ago, sdj64 said:

I did it!  Well, not really.

This design is incredibly impractical, since the bearing is so fragile.  And it won't break any speed records.  But it is BY FAR the smallest working turboprop I've ever seen.  It is powered by 2 Junos, uses thermometer hinges for the bearing, and cubic octagonal struts for the blades!

 

Ive really got to look at that style of bearing. 

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sdj64

sdj64

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100 m/s achieved!  Bearing redesigned and a bigger prop helped improve the speed.  The new bearing is built with a cone of thermometers and a small nosecone and is just about immune to bearing failure unless you time warp.

This plane is much easier to fly because it won't randomly disintegrate, take off at 40 m/s and keep level flight if you're going for the speed record.  It's also fun to fly around the KSC, with improved acceleration as well.

Top speed of 122.8!

2S2EfrI.png

https://www.dropbox.com/s/26eq6t2dmw7rhuh/Skipper Corsair.craft?dl=0

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Azimech

Azimech

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On 13-6-2016 at 4:29 AM, sdj64 said:

100 m/s achieved!  Bearing redesigned and a bigger prop helped improve the speed.  The new bearing is built with a cone of thermometers and a small nosecone and is just about immune to bearing failure unless you time warp.

This plane is much easier to fly because it won't randomly disintegrate, take off at 40 m/s and keep level flight if you're going for the speed record.  It's also fun to fly around the KSC, with improved acceleration as well.

Top speed of 122.8!

2S2EfrI.png

https://www.dropbox.com/s/26eq6t2dmw7rhuh/Skipper Corsair.craft?dl=0

This is actually a very good design with lots of room for improvement! I wonder why I never published my MK2 cargo bay engines, they're perfect for a lot of things!

If you place your aircraft on KerbalX, I'll put them in the hangar.

Edited by Azimech
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Majorjim!

Majorjim!

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30 minutes ago, Azimech said:

Also @Majorjim take a look at the evolution of your bearing on this last craft. Very interesting!

I just downloaded it, the bearing is great for props and does seem strong for that purpose! The aircraft was not controllable for me though.

On 13/06/2016 at 3:29 AM, sdj64 said:

This plane is much easier to fly because it won't randomly disintegrate, take off at 40 m/s and keep level flight if you're going for the speed record.  It's also fun to fly around the KSC, with improved acceleration as well.

I found it torquing left and if I tried to correct it for level flight it dropped speed, stalled and crashed. What was I doing wrong?

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Gman_builder

Gman_builder

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Alright, heres the Gremlin MK2 doing 224m/s. Fastest stock turboprop in the game to date! Download and more info from here. I beat Azimechs record 3 times in a row!

https://kerbalx.com/Gman_builder/Gremlin-MK2

I6WWDyD.png

@sdj64I love your turboprop designs! They not only look good but actually work too!

Edited by Gman_builder
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Azimech

Azimech

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2 minutes ago, Gman_builder said:

Seems like it worked really well XD

Yeah notice it starts shedding turbine blades through the collider of the cargo bay :lol:

Strangely enough, below max engine RPM.

Anyway, it was accelerating while it happened, so my engine mod pays off :-)

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Azimech

Azimech

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8 minutes ago, Gman_builder said:

@Azimech You should update the challenge description, it still says that the challenge ended in the 6th. I'm working on my plane some more, my new design has promise!

Ended or will end ... it says July 6th :-)

 

 

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Azimech

Azimech

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3 hours ago, quasarrgames said:

Could there be an SAS only category? Because i made this:

26lGdqC.png

And this is with the drag multiplier at normal settings. At 0.1 it's about 63m/s

 

That's a mighty fine job!

Okay, I'll adapt the challenge but I've got some other things to do first.

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