Lorenzo von Matterhorn
- Jan 31, 2009
- Reaction score
I believe that the Q Ball on the X-15 served as the prototype and proof of concept for its use on the Saturn, if I am remembering it correctly. But the X-15 did use the Q Ball. Early flights didn't use it because it was not ready yet. There is a pretty famous photo out there of one of the trial units sitting on a tripod just a few feet behind a F-100 in full afterburner, with the Q Ball glowing bright orange.I believe that's the same thing or similar to the X-15 nose sensor to measure angle of attack and angle of sideslip.
q is actually the dynamic pressure. The pressure related to the object moving through the fluid (air in this case). q = half rho velocity^2 (rho is the air density)I seem to recall that "q" is not simply aerodynamic (or atmospheric) pressure, but rather the pressure differential.