View Single Post
Old 07-02-2021, 02:33 PM   #90 (permalink)
aerohead
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 16,228
Thanks: 24,375
Thanked 7,357 Times in 4,757 Posts
backwards?

Quote:
Originally Posted by freebeard View Post
Fair point.

Would it be faster backwards?
Depends.
Blown from behind, the prop is in the wind shadow of its A-Frame mast support, which will induce the asymmetric loading. Not so good.
Exceeding the velocity of the tailwind though, the prop is now looking at the undisturbed air of a headwind. Favored by many aeronautical engineers. Some of the prop wash will impact the A-frame, compromising thrust efficiency.
Placing the prop in the rear gets rid of any structure impeding its slipstream, however you'd want it in a 'clean' environment, free of oncoming turbulence.
Jack Northrop tried to address this in his flying wings.
https://www.airway1.com/northrops-hi...crashes-in-us/
__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
  Reply With Quote
The Following User Says Thank You to aerohead For This Useful Post:
freebeard (07-02-2021)