Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 100
Book Description
Cryogenic Wind Tunnels for High Reynolds Number Testing
Author: The Cryogenic Wind-tunnel Concept for High Reynolds Number Testing
Author: Publisher:
ISBN:
Category : Low temperature engineering
Languages : en
Pages : 100
Book Description
The cryogenic wind tunnel for high Reynolds number testing
Author: Robert Ashworth KilgoreCryogenic Wind Tunnels: A Comprehensive, Annotated Bibliography
Author: Marie H. TuttlePublisher:
ISBN:
Category : Low temperature engineering
Languages : en
Pages : 146
Book Description
Cryogenic Wind Tunnels
Author: Marie H. TuttlePublisher:
ISBN:
Category : Low temperature engineering
Languages : en
Pages : 116
Book Description
Introduction to Cryogenic Wind Tunnels
Author: Cryogenic Wind Tunnels
Author: Marie H. TuttlePublisher:
ISBN:
Category : Low temperature engineering
Languages : en
Pages : 36
Book Description
Analysis of Fluctuating Static Pressure Measurements in a Large High Reynolds Number Transonic Cryogenic Wind Tunnel
Author: William B. IgoePublisher:
ISBN:
Category : Aeronautics
Languages : en
Pages :
Book Description
"Dynamic measurements of fluctuating static pressure levels were made using flush mounted high frequency response pressure transducers at eleven locations in the circuit of the National Transonic Facility (NTF) over the complete operating range of this wind tunnel. Measurements were made at test section Mach numbers from 0.2 to 1.2, at pressure from 1 to 8.6 atmospheres and at temperatures from ambient to -250°F, resulting in dynamic flow disturbance measurements at the highest Reynolds numbers available in a transonic ground test facility. Tests were also made independently at variable Mach number, variable Reynolds number and variable drivepower, each time keeping the other two variables constant thus allowing for the first time, a distinct separation of these three important variables. This report contains a description of the NTF emphasizing its flow quality features, details on the calibration of the instrumentation, results of measurements with the test section slots covered, downstream choke, effects of liquid nitrogen injection and gaseous nitrogen venting, comparisons between air and nitrogen, isolation of the effects of Mach number, Reynolds number and fan drive power, and identification of the sources of significant flow disturbances. The results indicate that primary sources of flow disturbance in the NTF may be edge-tones generated by test section sidewall re- entry flaps and the venting of nitrogen gas from the return leg of the tunnel circuit between turns 3 and 4 in the cryogenic mode of operation. The tests to isolate the effects of Mach number, Reynolds number and drive power indicate that Mach number effects predominate. A comparison with other transonic wind tunnels shows that the NTF has low levels of test section fluctuating static pressure especially in the high subsonic Mach number range from 0.7 to 0.9"--Page i.
Cryogenic Wind Tunnels
Author: Marie H. TuttlePublisher:
ISBN:
Category : Low temperature engineering
Languages : en
Pages : 96
Book Description
High Reynolds Number Research
Author: Donald D. BaalsPublisher:
ISBN:
Category : Aerodynamics, Transonic
Languages : en
Pages : 204
Book Description