Question on aircraft for hours building
Thread Starter
Joined: Jan 2008
Posts: 8
Likes: 0
From: London
Backpacker, quick question on what you said about the transonic prop speeds. Do you loose that much energy to sound at the tips?
I would have guessed that not much energy would get converted to noise simply because it doesnt take a lot of energy to make a loud noise, and that if your prop tips were rotating in the transonic range that it would cause a load of extra drag on the tips due to approaching air pressure wave speed, that would result in serious uneven stress along the prop aswell I would have thought.
Wouldnt this be quite dangerous and degrade prop life expectancy?
This is just my educated guess on this I could be miles out.
I would have guessed that not much energy would get converted to noise simply because it doesnt take a lot of energy to make a loud noise, and that if your prop tips were rotating in the transonic range that it would cause a load of extra drag on the tips due to approaching air pressure wave speed, that would result in serious uneven stress along the prop aswell I would have thought.
Wouldnt this be quite dangerous and degrade prop life expectancy?
This is just my educated guess on this I could be miles out.
Joined: Aug 2007
Posts: 182
Likes: 0
From: Derbyshire
to go back to the original post
Would anyone want to use a Cherokee from Sheffield , Barton or somewhere in that area ? We are looking to get one in the next ten weeks and it would be useful to get some experience beside a qualified pilot while i am training , Also looking fot a freelance instructor if there is anyone out there who fancies the task ?
