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Help needed - Interceptor

8,578 Synthex4060  8.3 years ago
6 downloads

I wanted to make a plane capable of flying really fast while carrying a lot of missiles. I went for a rather basic design with inlets under an elevated cockpit. I decided early on that the weight should be at the back (close to the CoT) and hence the lift to. The wings being swept backwards, I also decided to use canards for pitch control. The end layout is similar to a Rafale.

Anyway, I've been struggling for a week now trying to balance this bad boy. I like its shape size and looks, so I'm not totally giving up now, but I'm asking for help.

It's not just pitching up or down, it just wants to fly backwards. Even during take off it wants to turn around itself. I tried to put the CoG as far back as possible, and aligned with the CoT on the Z axis. The CoL is near the CoG a bit back and up. Still if I just spawn the plane at high altitude with no thrust it will fly backwards !! I've dowloaded designs with less alignment and they still fly ok, I tried XML editing, but nothing worked (this version has been saved prior to any editing). If anyone can tell me what the problem is and/or help me fix it, I would be most grateful !

General Characteristics

  • Created On Windows
  • Wingspan 37.9ft (11.5m)
  • Length 38.0ft (11.6m)
  • Height 10.5ft (3.2m)
  • Empty Weight 16,328lbs (7,406kg)
  • Loaded Weight 22,471lbs (10,192kg)

Performance

  • Power/Weight Ratio 3
  • Wing Loading 51.4lbs/ft2 (251.1kg/m2)
  • Wing Area 436.9ft2 (40.6m2)
  • Drag Points 3110

Parts

  • Number of Parts 70
  • Control Surfaces 5
  • Performance Cost 502
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    8,578 Synthex4060

    @BogdanX I have it :)

    8.3 years ago
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    8,578 Synthex4060

    @BogdanX Mmmh that's strange, I actually tried both of these solutions eventhough they're a bit counter-intuitive, I guess I didn't go far enough. One would think dead weight at the front would make it even more prone to flip over. The flat-bottom airfoil for the canard would also bring more drag to the front (although I'm not sure how this is exactly modelled in the game), while I would have tried to put drag at the back so it aligns with the airflow from the front.

    In any case, thanks a lot for fixing it !

    8.3 years ago