Thread: Theory on lift
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Old 1st Aug 2018, 06:37
  #375 (permalink)  
fizz57
 
Join Date: Apr 2008
Location: back of beyond
Posts: 98
Originally Posted by megan View Post
the SR-71 derives the majority of its thrust from the inlet, where the diffuser here is providing some 2,000 lbs thrust.
I've always disliked statements like these (true though they may be) as it's no different to saying that the forward force in a conventional-drive car is generated by the rear axle. Airflows and pressures are a bit less visible than shafts and gears, but the principle is the same.

I wouldn't be surprised if someone comes up with an inlet design that actually produces a net backward force on the engine mounts....
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