Transcript weww

Velocity Distribution, near exhaust at Mach 1
The vehicle must have a smooth transition, specially near the exhaust and over the
wheels. The fringe lines, radiating from the surface shows velocity (therefore local
pressure) variation which must be minimized to lower drag & lift.
Pressure Distribution at the tip at Mach 1
The goal is to reduce pressure variation over the entire length of the body
during the run. Pressure at the tip (above) varies from 11-22 Psi
Results:
1. Drag Coef. (Including results of ground effect) was calculated to be 1.12
2. Center of Pressure (Cp) is 0.31 x L from the tip, where L = total length of
“Waldo mobile”
3. Total force along the longitudinal axis: 8300 Lbs
4. No of shocks creates = 3
5. Lift = - 3400 Lbs at CP when sonic