Profile image

Light Cargo STOL Prototype

9,721 DownUnderWing  7.3 years ago

Prototype of an STOL light cargo aircraft designed to compete with the classic Twin Otter. Pretty happy with it so far - thought i'd share. Feedback is welcome.

AG.1 + VTOL Propellor Pitch.
AG.2 + VTOL Flaps.

Carries 2,000kg cargo in fuselage blocks.

Takeoff and Landing at around 75mph.
Approach speed above 90mph for pitch authority.

Cruise power (65%) will give 165mph @ 5,000ft for roughly 45 minutes.

Stall speed around 70mph but best climb angle is around 90mph.

Disable AG.1 when adjusting flaps and disable AG.2 when adjusting prop pitch.

Prop Pitch control - full VTOL up for forward flight and full VTOL down for reverse thrust (only use when on the ground during landing but can be used during vertical dives).
Only use VTOL full UP or full DOWN or you will overspeed the propeller.

Flaps Up - VTOL NEUTRAL and above.
Flaps Down - VTOL DOWN.
She can handle up to and including 40mph gusting crosswinds - just be light on the brakes.

Both Action Groups start disabled.

Work In Progress with more to come in the next version.

General Characteristics

  • Created On Windows
  • Wingspan 59.8ft (18.2m)
  • Length 41.3ft (12.6m)
  • Height 17.8ft (5.4m)
  • Empty Weight 11,967lbs (5,428kg)
  • Loaded Weight 15,567lbs (7,061kg)

Performance

  • Horse Power/Weight Ratio 0.192
  • Wing Loading 11.1lbs/ft2 (54.2kg/m2)
  • Wing Area 1,403.3ft2 (130.4m2)
  • Drag Points 14446

Parts

  • Number of Parts 175
  • Control Surfaces 10
  • Performance Cost 738