Wind Tunnel Characteristics | |
Test Section | 7 ft tall, 10 ft wide, 12ft long |
Wind Speed | up to 200 mph (100 psf) or higher with a reduced test-section size |
Mach Number | up to 0.25 (or higher) |
Turbulence Intensity | 0.25% (DC to 2kHz) |
Propeller Type | 12.5-ft diameter Curtis Electric |
Speed Control | blade pitch and fan speed |
Electric Motor Rating | up to 1200 RPM, 2400 hp |
Time to Set Speed | Less than 60 seconds |
External Balance and Turntable | |
Yaw Range | -120° to +190° |
Lift Force Range | -1000 lb to +3000 lb |
Drag Force Range | ±1000 lb |
Side Force Range | ±1000 lb |
Force Accuracy | Greater of ±0.5 lb or 0.25% |
Pitching Moment Range | ±2000 ft-lb |
Yawing Moment Range | ±1000 ft-lb |
Rolling Moment Range | ±2000 ft-lb |
Pitch and Yaw Accuracy | Greater of ±0.5 ft-lb or 0.25% |
Roll Accuracy | Greater of ±1.0 ft-lb or 0.5% |
Internal Balances | ||
Task Mark X | Task Mark XIII | |
Diameter | 1.25 inch | 1.25 inch |
N1, N2 | 100 lb, ±0.1 lb | 500 lb, ±0.4 lb |
S1, S2 | 50 lb, ±0.1 lb | 500 lb, ±0.5 lb |
Axial Force | 60 lb, ±0.1 lb | 150 lb, ±0.1 lb |
Rolling Moment | 120 in.lb, ±0.5 in.lb | 800 in.lb, ±1.7 in.lb |
Pitching Moment | 425 in.lb | 2625 in.lb |
Yawing Moment | 260 in.lb | 2125 in.lb |
Flow Characteristics | |
Dynamic Pressure Accuracy | 0.2 psf |
Spatial Flow Variation | < 0.5% above 5 psf |
Flow Angularity | < 0.4° above 5 psf |
Turbulence Intensity | 0.25% (DC to 2kHz) |
Boundary Layer Thickness | 1.5 to 3.5 inches |
Flow Uniformity |