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Player 7961's aircraft

1,516 atgxtg  10 days ago
2 downloads
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Auto Credit Based on Player7961's Could someone please make this fly?

Player7961's aircraft "fixed" so it flies. Note it still has a tendacy to pitch up.

General Characteristics

  • Predecessor Could someone please make this fly?
  • Created On Windows
  • Wingspan 27.6ft (8.4m)
  • Length 28.1ft (8.6m)
  • Height 18.5ft (5.6m)
  • Empty Weight 12,024lbs (5,454kg)
  • Loaded Weight 12,899lbs (5,851kg)

Performance

  • Power/Weight Ratio 3.484
  • Wing Loading 57.9lbs/ft2 (282.8kg/m2)
  • Wing Area 222.7ft2 (20.7m2)
  • Drag Points 2046

Parts

  • Number of Parts 75
  • Control Surfaces 6
  • Performance Cost 480
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    1,516 atgxtg

    @Player7961

    You're welcome. Most of us have been there.

    BTW, my first dozen or so aircraft all went "boom" on the runway.

    2 days ago
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    Thanks!!!!!

    3 days ago
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    1,516 atgxtg

    Hi, welcome to simpleplanes.

    BTW, the reason why it didn't fly before was because the center of mass (the red ball that show up with you hit the space bar during the build process) was too close to the center of lift (the blue ball), which makes it unstable and want to pitch up nose over tail. This is compounded with the plane being tail heavy which makes it want to pitch up.

    You kinda want to look at a airplane as a seesaw. Roughly speaking, you want to balance the plane on the center of lift (blue ball) and put the center of mass (red ball) about one half to one ball length ahead of it. That way the forces of weight and lift mostly balance out. That's not set is stone and there are ways to get around this, but it's a good rule to start off with.

    I "fixed" (well partially fixed) this by replace your nosecone with a a couple of pieces of fuselage and which I could add weight to. This shifted the center of mass forward enough that it flies, but it still is a bit tail heavy.

    Other ways you can improve on this this would be to somehow reduce the weight in the tail section, moving the wings further back, or angle the horizontal stabilizers of the tail upwards to create a force to push the tail section up.

    Hope that helped.

    10 days ago