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VTOL Assistance Requested

120 TheMaroon47  7.6 years ago

As you can probably tell, I'm in the process of making a VTOL plane specifically for carrier operations. The plane uhh... doesn't fly. Instead of traditional VTOL aircraft using rotating nozzles, I use a rotator to rotate the whole engine instead. The engine provides just enough thrust for VTOL but is way too powerful for the aircraft to handle when rotating the engine to face forward and the aircraft spins indefinitely. The CoM and Cost are almost smack bang on top of each other. Any suggestions?

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    I’m having the same issue with this aircraft https://www.simpleplanes.com/a/2R08hH/AT-AT-Hauler

    4.1 years ago
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    Update: https://www.simpleplanes.com/a/nmvf91/F-20F-N-Dilo
    The above is the modified model that can actually fly straight. Handling issues persist and the aircraft still cannot transition from normal flight to VTOL.

    7.6 years ago
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    55.4k Beefy

    Can i see the plane? @TheMaroon47

    7.6 years ago
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    @F104Deathtrap In flight the plane requires a rather substantial amount of upwards pitch to keep in level flight. However, I cannot put the engine any lower as it would be beneath the actual fuselage by then.
    Update: I have tried to increase the mass of the rear of the aircraft to some avail but this makes VTOL incredibly awkward.

    7.6 years ago
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    @Alienbeef0421 That is quite literally impossible as the engine is not symmetrical.
    @ValtsuAircraftIndustries Preferably not.

    7.6 years ago
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    I have a couple of thoughts. First, a jet engine is a heavy thing and attempting to rotate that much mass (instead of just nozzles) probably has a lot to do with the spinning problem. Second, have you tried flying the plane with the engine stuck in "normal flight" position? How does it handle? Is the COL too close to the COM?

    7.6 years ago
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    55.4k Beefy

    COT/COM shouldn't be ON TOP OF EACH OTHER, but TOGETHER. COT should be aligned with the COM in all three axes.

    7.6 years ago
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    Maybe have a seperate engine for normal flight?

    7.6 years ago