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Beriyev Be-103 (W.I.P.)

45.4k Sgtk  6.1 years ago
82 downloads

Hello. Not a typical post, but I need some help. Float/Seaplanes are the bane of my existence, and I cannot ever get these things to fly. I'm looking for some assistance in balancing the flight charachteristics/power to the real thing. The top speed is 150mph, but I am unable to achieve level flight let alone takeoff without exceeding that. Ay help is appreciated. Thank you!!

General Characteristics

  • Created On Windows
  • Wingspan 39.9ft (12.2m)
  • Length 35.3ft (10.8m)
  • Height 9.2ft (2.8m)
  • Empty Weight 4,685lbs (2,125kg)
  • Loaded Weight 6,857lbs (3,110kg)

Performance

  • Horse Power/Weight Ratio 0.291
  • Wing Loading 24.5lbs/ft2 (119.8kg/m2)
  • Wing Area 279.5ft2 (26.0m2)
  • Drag Points 8634

Parts

  • Number of Parts 71
  • Control Surfaces 3
  • Performance Cost 278
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    45.4k Sgtk

    @SledDriver i see that from the picture. I will plays with weights again and see how it goes. Thank you!!

    6.1 years ago
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    197k SledDriver

    @Sgtk OK, then look at the original and see how it sits in the water -- significantly nose-up. You need that if you want the engines to push it out of the water instead of the opposite.

    6.1 years ago
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    52.5k Tang0five

    I dunno @Sgtk when I get these problems it’s smuggle a jet engine in there and toy with the ‘y axis’ until it makes sense. I’m sure a wizard nearby will answer your call!

    6.1 years ago
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    45.4k Sgtk

    @SledDriver I agreethat high wings are best, but this is a replica and the wing sits where it does on the real thing.

    6.1 years ago
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    197k SledDriver

    Well, the configuration of this thing is all wrong for a seaplane. The wings need to be high up on the fuselage, for one thing, but that's not what's keeping this thing from taking off. When the engines are high and to the rear like this, they apply a torque that rotates the nose downwards. You want the opposite. Bring the engines to the front, and angle them so that the rear is pointing downwards slightly. You can do this either by rotating the engines themselves (which will give the airplane a nose up tendency in flight), or by attaching floats to the body that are slightly angled/tapered, so that the entire body is pointed upwards.

    6.1 years ago
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    45.4k Sgtk

    @Tang0five I know. Super hard with this one since the wing sits in in the water. The buoyancy is where it is for realistic sitting in the water. Is the answer just more lift?!

    6.1 years ago
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    52.5k Tang0five

    Looks neat, iOS is not agreeing with those props, only getting 45mph on water, Have you tried adding more buoyancy and dead weight to the float sections? I love flying boats but they are murder to get lift-off water and decent flying characteristics! Good luck buddy!

    6.1 years ago
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    9,311 xYoshii_

    first

    6.1 years ago