This plane will fly extremely stable without toutching controls

[Chocolat Oreos]

http://prntscr.com/ibgmal

I think it has something to do with the wings on ground principle but I am not sure... As the speed of the plane goes up, the pitch goes up, as the speed goes down it pitches back down gaining more speed.

http://prntscr.com/ibh4gl <-- that is a building guide you can try in real life, you just need a really thin wooden plank that is 10cm thick and a long stick and some tape

http://prntscr.com/ibh5m9 here is how it would look, I made this at a university (TU delft), it has a little hook at the front to launch it using an elastic taped to the ground. sadly I didn't bother to film it, and I don't have it anymore.

 

here is a video of it in ksp

 

It flies without gimbal, control surfaces or SAS

 

 

 

[DrLicor]

it has to do with the fact that the engine is 'pulling' the plane, instead of 'pushing' it. and slight a combination of the CoM/CoL

Still, nice design though

Edited February 7, 2018 by DrLicor

[Chocolat Oreos]

Just now, DrLicor said:

it has to do with the fact that the engine is 'pulling' the plane, instead of 'pushing' it.

Still, nice design though

it works with it pushing too.... trust me, I tried it

[DrLicor]

In that case, you've the perfectish numbers.  Exact the right combo of lift, AoA, angle of the wing relative to the body. Does it also behave this way when going much faster or at other altitudes?

[Chocolat Oreos]

Just now, DrLicor said:

In that case, you've the perfectish numbers.  Exact the right combo of lift, AoA, angle of the wing relative to the body. Does it also behave this way when going much faster or at other altitudes?

It works close to the ground, slowly lifts itself up to about 10km, then flies almost stable in a straight line. Want the ship file?

[DrLicor]

I don't play stock anymore, but thanks anyway

[qzgy]

58 minutes ago, Chocolat Oreos said:

I think it has something to do with the wings on ground principle but I am not sure...

I'm pretty sure ground effect isn't modeled by KSP, so its probably just a really good stable design.

[Chocolat Oreos]

12 minutes ago, DrLicor said:

I don't play stock anymore, but thanks anyway

Oh, it's not a stock design, I used proceduralwings and tweakscale to make it somewhat work

[DrLicor]

1 minute ago, Chocolat Oreos said:

Oh, it's not a stock design, I used proceduralwings and tweakscale to make it somewhat work

Yep, but I meant not stock solar system etc. my fault.  
I'm playing with a RSS/RO/RP-0 zero overhaul

[ExtremeSquared]

2 hours ago, DrLicor said:

it has to do with the fact that the engine is 'pulling' the plane, instead of 'pushing' it. and slight a combination of the CoM/CoL

Still, nice design though

*Pulling a somewhat flexible craft. Beware the Pendulum Rocket Fallacy.

[Vanamonde]

This sharing of a craft has been moved to the craft sharing subforum.