- Oct 30, 2003
- Québec, Canada
- airplane, trike, gyro, paramotor...
- Total Flight Time
What Resasi means, or should mean, is it requires a connected drive system to each rotor system to maintain the same RPM, even in autorotation.The Chinook does autorotate!!!!
What Resasi means, or should mean, is it requires a connected drive system to each rotor system to maintain the same RPM, even in autorotation. Yes, otherwise you have the destrruction of the rotors
In a gyroplane, it would be possible, in fact probable that one rotor system would gain RPM or loose RPM if not connected, causing an irreversible decay due to the continued lift of the other rotor system, causing the tail or nose to sink and tumble. I have seen this kind of RC aircraft flying with separeted, non intermeshing rotors, i don't find the video but this one...
If you did make a gyro with connected rotor systems, the drag of the system would make such a aircraft very inefficient when relying on only autorotation to power the rotor system. Calculations show that a rotor, with a half the weight to lift and, a half the weight of a reference rotor (t.t.s. all dimensions divided by the cubic root of two=1.26), has a better L/D than the reference rotor...The same for the props...
http://video.google.com/videoplay?docid=-1783443661332834299&q=Boeing+X-48&total=1&start=0&num=10&so=1&type=search&plindex=0It's true, you can do a lot of things with toys.(TRUE)
I'm talking about real aircraft that carry people, which makes it a different world. (FALSE, all begins by a toy, in this real world!!!)
I'm not going to bicker with you.
The purposes of this thread is not to build a tandem-rotor gyro (even with an interconnection) It's only to stimulate our fingers!!!...:typing:I'm not going to bicker with you.
Believe what you want. I believe in nothing without proof!!! I know you are a great believer!
We were talking about tandem gyro's with unconnected rotor systems. I did not say models were not used to develop aircraft. I said you are not in the real world if you believe you can make a full scale tandem gyro with unconnected rotor systems fly with people on board. You believe it's not possible!...
Make one fly with people on board and prove me wrong.
Anyway, gyrocopters are not the pinnacle of efficiency!!!Andre;
I believe many have said that the early tandem helicopters, which were not equipped with Stability Augmentation Systems, were not the pinnacle of stability or controllability. Having read the patent, I suspect that his tandem gyrocopter will be no better and perhaps worse.
By God or by Darwin ~ Your choice
..... the tandem would still be grossly inefficient... more so than the typical gyro.
What can simplify rotorcrafts is the vectorizing tail: in the case of the Touringcopter, you have control on yaw and pitch...Andre,
One idea that you have on your aircraft that I like is the "ring tail". In the Piasecki study, the fan can and did compensate for torque. For partial power gyros, a larger amount of power (read higher rrpm) can be diverted to the rotor for jump take offs and low speed situations.