Timeline for Is autorotation possible from a 0 rpm start at high altitude?
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| Sep 27, 2019 at 11:02 | comment | added | Zeiss Ikon | Pulling energy off the rotor for electric generation will produce a torque drag (opposite direction from torque reaction), so you'll need some means off offsetting the torque. Vanes would have to be large, since your speed is low. Might be lighter to put a rotor-driven tail rotor on it. Deployment setup is left as an exercise... ;) | |
| Sep 27, 2019 at 6:11 | comment | added | Mr. Sir | The current idea is the have the blades folded "down" along the rotational axis. The reason I was considering coaxial rotors is that one of our design goals is to generate electrical power during descent. If I am not mistaken, a single rotor connected to a motor would have torque. Could I use a single rotor and vanes to keep the enclosure from rotating? | |
| Sep 26, 2019 at 11:06 | history | edited | Zeiss Ikon | CC BY-SA 4.0 |
Add coaxial rotor considerations.
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| Sep 26, 2019 at 11:04 | comment | added | Zeiss Ikon | That depends on how you deploy the rotors. If they're folded along the rotation axis (i.e. flap hinge folded) and can be deployed simultaneously enough to prevent one rotor interfering with the other, it shouldn't matter. BTW, you do know there's no torque reaction during autorotation? That makes coaxial rotors and unnecessary complication. | |
| Sep 26, 2019 at 0:07 | comment | added | Mr. Sir | Are there any special considerations needed for coaxial rotors? | |
| Sep 25, 2019 at 17:53 | history | answered | Zeiss Ikon | CC BY-SA 4.0 |