In another thread, a fixed wing flight instructor is claiming that a helo in a steady hover is not generating any thrust horsepower because it ain't moving.

thread here (http://www.pprune.org/tech-log/480912-propeller-torque-engine-torque-2.html#post7107143)

Long Yawn.....................................:hmm:

I wasn't long Yawning after reading his post!

helo in a steady hover is not generating any thrust horsepower because it ain't moving.That's right innit ... defying gravity takes no energy at all ... :}

Cheers

Whirls

Defying gravity makes me sleepy!

After a day in other than a supine posture....and it is bed time!

Can I say then that "Sleep" opposes gravity?

Everybody knows that gravity comes from the moon and pushes stuff down onto the Earth. Fact.

I believe that the fixed-wing instructor is in fact correct. All aircraft, fixed-wing and rotary-wing, produce a lot of noise and burn lots of fuel purely to make us believe that science makes these machines fly. The real reason aircraft fly is explained in this video from one of the world's leading experts on the dynamics of flight.

Al Murray does Brighton - YouTube

While this expert offers many interesting insights into the human condition early on in this video, you should go to the 5:00 point where he gets down to the nuts and bolts of powered flight. Those of us privileged enough to hold a pilot's licence believe ourselves to be highly gifted and skilled individuals with the reflexes of a cat. It turns out we are wrong!:ok:

500 Fan.