by "SHARPSPEED" (SHARPSPEED)
Published 04/20/2017 at 21:25
by "SHARPSPEED" (SHARPSPEED)
Published 04/20/2017 at 21:25
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Pardon the art, it was made in like 5 minutes just to get the point across.
So here’s an idea I’ve had for a bit after learning a bit more about NOTAR systems on helicopters and those witchcraft Dyson fans. I wondered if those same ideas could be applied into a drone, and what said drone would look like. So I threw this drawing together help explain how it would work. Maybe. See, I’m not a smartypants engineer and all my knowledge about NOTAR and all that nonsense comes from short splurges on Wikipedia and Youtube. But I know there’s some big brains here. So I gotta ask said big brains; is this design even hypothetically possible?
"TheHondaBro" (wwaveform)
04/20/2017 at 21:29, STARS: 2
You drew a ceiling fan.
"Jake - Has Bad Luck So You Don't Have To" (murdersofa)
04/20/2017 at 21:32, STARS: 0
*maybe* if you used the tiny scale jet motors in the base of the booms. That’s a lot of air to move and not a terribly efficient route it has to take.
"MrDakka" (mrdakka)
04/20/2017 at 21:53, STARS: 1
Directional control wouldn’t work well. Thing about NOTAR is that the majority of the anti torque thrust is NOT derived from the airflow exiting the vent. Instead that airflow is used to induce/maintain the Coanda effect which changes the direction of the downwash of the main prop (this is what provides the majority of the anti torque thrust and directional control), which your conceptual drone doesn’t have.
What would work better would be to ditch the control vents and only have the vents. Then by controlling how much each vent is open/closed you you’d be able to control the thrust from each arm and have directional control of the drone.
"facw" (facw)
04/20/2017 at 22:48, STARS: 1
Wouldn’t you want the intake on top?
"Eric @ opposite-lock.com" (theyrerolling)
04/20/2017 at 23:12, STARS: 0
I feel this would be unreasonably complex to implement.
However, I bet you could do it with blowers mounted outboard with intakes at the tips of the booms.
The problem is size/weight. As a result, it’d be far less efficient than the current open propeller designs.
Also, if you were intaking air from the center, you’d want to do it from above, not below.
"merged-5876237249235911857-hrw8uc" (merged-5876237249235911857-hrw8uc)
04/20/2017 at 23:20, STARS: 1
Yeah that makes sense, similar to how the drones work, you just throttle down or up one or more of the vents to pitch the drone and direct it which way you want. Shouldn’t be much different than a propeller, assuming you can make enough thrust.