Sweep wings not behaving like they should

[Combatsmithen]

I built an F-14 with sweep wings using IR rotatrons, I am using B9-Pwings. And as a test I got about 100 meters off the ocean using atmosphere autopilot and had it hold level. I had the throttled maxed out and waited until my speed stopped increasing. Then I swept the wings back and noticed that the plane lost about 5-10 M/s in speed like it was experiencing increased drag from sweeping the wings back instead of decreased drag. Which makes absolutely no sense as the sweep wings were designed to reduce drag when going supersonic allowing for higher speeds while keeping maneuverability with them in the forward position at low speed. Can somebody give me any tips or is it just KSP being KSP....

 

Edited August 21, 2016 by Combatsmithen

[OrbitalBuzzsaw]

Try it with stock wings.

[Combatsmithen]

the only problem is this craft was designed with P-wings, putting stock wings in their place might not work. But its simple aerodynamics, the aerodynamics of the B9 Pwings are modeled correctly so it shouldn't be a problem. For some reason it is getting more drag when it should be getting less.

58 minutes ago, OrbitalBuzzsaw said:

Try it with stock wings.

 

[OrbitalBuzzsaw]

Yea, but its a mod so...

[Combatsmithen]

@OrbitalBuzzsaw Well. My point is, they shouldn't be doing this, and I don't know why, but im pretty sure it isnt the Pwings

[OrbitalBuzzsaw]

Hmm. I blame the government.

[Spricigo]

 

1 hour ago, Combatsmithen said:

@OrbitalBuzzsaw Well. My point is, they shouldn't be doing this, and I don't know why, but im pretty sure it isnt the Pwings

Actually no,  you are not sure since you didn't check it.  

Also you don't know how to solve the issue by yourself yet is refusing the help @OrbitalBuzzsaw was willing to give.  

 

[ferram4]

Stock aerodynamics do not model wing sweep at all.  A wing will make the same lift and drag regardless of its sweep, so what you're trying to do here won't change anything about the wing's characteristics themselves.

However, rotating the wing will move the CoL back, which means that you need more pitch-up authority from the tail, which means more drag from that, so you go slower.  You would probably be able to go faster by instead shifting the wings forward to get the CoL closer to the CoM and reduce the forces required from the tail if you wanna stick with stock aero.

[Combatsmithen]

58 minutes ago, ferram4 said:

Stock aerodynamics do not model wing sweep at all.  A wing will make the same lift and drag regardless of its sweep, so what you're trying to do here won't change anything about the wing's characteristics themselves.

However, rotating the wing will move the CoL back, which means that you need more pitch-up authority from the tail, which means more drag from that, so you go slower.  You would probably be able to go faster by instead shifting the wings forward to get the CoL closer to the CoM and reduce the forces required from the tail if you wanna stick with stock aero.

Thank you! That sucks, I thought stock KSP had better aero than that. Maybe ill install FAR  ive used FAR before, but I don't have it on this save for the sake of the simplicity