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5,073 Timplanes  2.0 years ago

A Mosasaurus!

This is an entry for the Ornithopter Challenge by CheetoPumkinEater1

This began as a for fun build, but I ended up spending a good amount of time making this craft function well. It’s not very anatomically accurate, but it’s about the size of an adult mosasaurus. Hope you enjoy!

Note: The mosasaurus was a prehistoric aquatic reptile that lived during the late Cretaceous period (82-66 mya). These creatures could grow to about 50 feet (17 m) long and are believed to have been able to prey on any animal in their habitat.


AG1: activate/deactivate turbojet for extra thrust
AG2: activate/deactivate flippers
Throttle: input for flippers and turbojet
VTOL: mouth

Works best when starting from water or air, but it can do a runway takeoff.
  • Activate 1 & 2
  • Turn throttle slowly to ~80%
  • Pull up

Note: if doing a takeoff from land, lock flippers at 30% throttle and pull up from beginning of takeoff “roll”



General Characteristics

  • Created On iOS
  • Wingspan 23.2ft (7.1m)
  • Length 42.7ft (13.0m)
  • Height 6.9ft (2.1m)
  • Empty Weight 936lbs (424kg)
  • Loaded Weight 1,725lbs (782kg)


  • Power/Weight Ratio 3.906
  • Wing Loading 1.9lbs/ft2 (9.3kg/m2)
  • Wing Area 901.5ft2 (83.8m2)
  • Drag Points 1311


  • Number of Parts 168
  • Control Surfaces 0
  • Performance Cost 707
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    5,073 Timplanes

    @CheetoPumkinEater1 Yea, I was wondering what your reaction might be to the mosasaur. It did feel a bit out of place when I posted it. Overall though I agree with your decision as the dragon seems to have much more work put into it. Thanks for allowing me to participate in the challenge and giving me second!

    2.0 years ago
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    Hey, don’t down my yacht :) @XYeetusdeletusx

    2.0 years ago
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    I'm glad I lost to this and not a flying yacht

    2.0 years ago
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    1,274 DaDEMON1o1

    @Timplanes246 yeah it would

    2.0 years ago
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    5,073 Timplanes

    @DEMON1o1 No, but that would’ve been cool!

    2.0 years ago
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    1,274 DaDEMON1o1

    are mosasaurus able to fly

    2.0 years ago
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    16.1k FlirBlitz

    @Bellcat yes

    2.0 years ago
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    7,102 Bellcat

    Here comes...

    The Giant, Flying, Aquatic Dinosaur!

    The average teenaged high schooler boy’s dream has come true...

    2.0 years ago