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View Full Version : Do we need a partially powered rotor gyro??

quadrirotor
10-02-2006, 11:48 AM
What could be the benefices of such a gyro?
Vance
10-02-2006, 12:29 PM
It is my understanding that an autogiro will fly faster with a partially powered rotor or fly the same speed with less power required.

Thank you, Vance
rtfm
10-02-2006, 12:39 PM
Hi,
A partially powered rotor will require less energy from the airstream to maintain a given RRPM, so the rotor AoA can be reduced, and this in turn will reduce the drag. Hence, faster forward flight.

Duncan
quadrirotor
10-02-2006, 12:43 PM
What is better: a partially powered rotor or an aerodynamic shaped cabin? what the contributions of both versus the cost?
Vance
10-02-2006, 01:06 PM
I wouldn’t think of them as mutually exclusive. I would think that both would contribute to flight with less horsepower. How much would depend on how bad things were to begin with.

Thank you, Vance
MikeBoyette
10-02-2006, 01:48 PM
About as much as we need another syncrocopter. At least they are building something instead of just typing about it. By the way the LIfINO has all three Jump take off, partially powered rotor and a sleek aerodynamic shaped cabin.
C. Beaty
10-02-2006, 02:27 PM
Dr. Martin, I’m really impressed by your Ph.D. Is it in music? Theology? Education? Sociology?
MikeBoyette
10-02-2006, 02:41 PM
Chuck
That's funny!!!
C. Beaty
10-02-2006, 02:55 PM
When I was a kid, Mike, the high school band director was a Dr. Jazmaggi. Left a lasting impression on me.
John Stahl
10-02-2006, 07:09 PM
Can some one tell me when a gyro is partially powered?
Wouldn’t a pre rotor be considered a PP Gyro?
And when is a gyro not a gyro but a helicopter?
Vance
10-02-2006, 08:56 PM
It is my understanding that when a rotor is driven in flight by some portion of the engine power, it is a partially powered rotor. Most pre-rotors are for operation on the ground so they would not be considered a partially powered rotor unless it was engaged in flight.

I believe it would be a helicopter if most of the engine power goes to the rotor and the rotor is not in autorotation.

Thank you, Vance
quadrirotor
10-03-2006, 04:08 AM
C. Beaty, did i say anything wrong?
John Stahl
10-03-2006, 06:27 AM
André

Too often the title of PH.D is used to impress and demand respect. It often sounds or feels like the little child that brags that my dog is better than your dog.
In aviation there is no PH.D... We don’t understand why it’s on your avatar
And that is why Chuck just slammed you. It has nothing to do with what you said.

My brother in-law has a PH.D. in Education. Shortly after he got the doctorate I asked him if the PH.D. made him an expert in education. He answered if the definition of expert is a drip under pressure then I guess I am.

Chuck
That was a good one I’m still chuckling about it
quadrirotor
10-03-2006, 07:11 AM
John, you are on this forum only since june 2006! you can't understand why i put PhD in may avatar...You must read all my posts from the beginning!!

When people said to me that they don't know what PhD. means, i say:

PhD= Push here Dummy! :lol: :lol: :lol:
C. Beaty
10-03-2006, 08:10 AM
I did not imply you had done anything wrong, Dr. Martin, although that appears to be your inference.

I was merely complimenting you on your Ph.D. and inquiring as to the field in which you were awarded a doctorate.
Heron
10-03-2006, 10:27 AM
Mybe he is PhD in riddles? :whip:
Heron
Robert G. Stark
10-08-2006, 03:20 PM
I have a PHD in Aviation Technology and I respect and admire those who have one. I know what it takes to get. Any subject deserves respect.
pbool
10-08-2006, 07:20 PM
I started a thread a bit ago titled, tri-motor gyro. I guess it was technically a partially powered rotor. John M