Subject: NACA scoops
From: ACRE
Date: 2/23/2004, 9:38 PM


 Unless somebody out there is really clever, I don't think
we need to be
concerned with supersonic inlet design. ;-)

Monty

Damm, There you go Monty, bursting my bubble!
BTW the shock cones on the SR71 move in and out
almost 6 FEET! must have been a real bear figuring
the program for that. Glad I didn't have to do it.
Kelly J. and his guys are aerodynamic gods, we are
not worthy....
Bill Jepson


Sorry Bill. That dang exponential drag/constant hp problem just won't go
away. The only good news is, drag gets exponentially smaller the slower you
go!

The angle of the shock is a function of Mach number. I bet the real problem
was trying to implement a decent control in that day and age. No nice simple
robust microcontrollers. Plus trying to eliminate hysterisis in the control
hardware, plus heat etc. I bet the forces on that cone at mach 3 are not
trivial. Quite a mechanical design problem in that day and age.

Monty

 
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