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Grob G-103 twin astir II (with retractable engine)

582 JonathanElst  5.1 years ago
113 downloads

This is my replica of the Twin II. It's very stable and nice to fly, just like a real Twin Astir.

VTOL: slide back to retract engine, When deploying: don't slide it further forward than the middle marker.

Trim: normal trim, I recommend to put it all the way back when using the engine.

After posting this i realised that forgot something: the drag is quite high. you can easily fix this by disabling drag on the outer wing part. you''ll see it flies much better XD

Spotlights

General Characteristics

  • Created On Windows
  • Wingspan 81.8ft (24.9m)
  • Length 40.3ft (12.3m)
  • Height 10.5ft (3.2m)
  • Empty Weight 2,989lbs (1,356kg)
  • Loaded Weight 3,284lbs (1,489kg)

Performance

  • Horse Power/Weight Ratio 0.274
  • Wing Loading 10.9lbs/ft2 (53.2kg/m2)
  • Wing Area 301.4ft2 (28.0m2)
  • Drag Points 1863

Parts

  • Number of Parts 43
  • Control Surfaces 7
  • Performance Cost 287
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    1,298 PlaneBoy3

    And to you too!@JonathanElst

    5.1 years ago
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    @PlaneBoy3 Thank you, I wish you the best of luck!

    5.1 years ago
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    1,298 PlaneBoy3

    Nice! And I think in the U.S. you can solo at 14 but they recommend to start flying at 12-13 so that may be me soon. Congratulations on your license. @JonathanElst

    5.1 years ago
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    @PlaneBoy3 Wow that's great! In most countries you can start gliding from 14 years. That's when i started and i was flying solo in half a year, and now i'm 16 and i just got my license last month.

    5.1 years ago
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    1,298 PlaneBoy3

    No, sadly I am underage although I plan to become one as my current future career is to be an aircraft designer. And I thought if I were to design stuff, I should learn the basics. Thanks for asking! @JonathanElst

    +1 5.1 years ago
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    @PlaneBoy3 are you a glider pilot yourself?

    5.1 years ago
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    1,298 PlaneBoy3

    I’m a huge fan of sailplanes and this is the best one I’ve seen so far, nice work.

    5.1 years ago
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    1,725 SVRondo

    Awsome

    5.1 years ago
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    43.3k Trainzo

    @JonathanElst , It is deserved . Very good work .

    5.1 years ago
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    @Trainzo Thank you!

    5.1 years ago
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    43.3k Trainzo

    Very nice plane . Great job .

    5.1 years ago