XXavier
Member
- Joined
- Nov 13, 2006
- Messages
- 1,482
- Location
- Madrid, Spain
- Aircraft
- ELA R-100 and Magni M24 autogyros
- Total Flight Time
- 913 gyro (June 2023)
In a French forum, I've seen this illustration by Jean Claude:
He compares the case of a circular wing with that of a rotor. For the same diameter and airspeed he shows that the lift is identical if the AoAs are conveniently chosen. He explains how he calculated the deflection angle of the wake for the circular wing –the key magnitude for calculating the lift– but doesn't explain how did he get the wake deflection angle for the rotor disk...
That's what I'm asking...
Or, put in a different way, how did he know that CL = 0,22 for the rotor disk @ 11,5º AoA...?
He compares the case of a circular wing with that of a rotor. For the same diameter and airspeed he shows that the lift is identical if the AoAs are conveniently chosen. He explains how he calculated the deflection angle of the wake for the circular wing –the key magnitude for calculating the lift– but doesn't explain how did he get the wake deflection angle for the rotor disk...
That's what I'm asking...
Or, put in a different way, how did he know that CL = 0,22 for the rotor disk @ 11,5º AoA...?
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