Flight Calibration of Compensated and Uncompensated Pitot-Static Airspeed Probes and Application of the Probes to Supersonic Cruise Vehicles. Technical Report NASA Technical Note TN D-6827, Research Engineering, NASA Dryden Flight Research Center

Webb, Lannie D. and Washington, Harold P. (1972) Flight Calibration of Compensated and Uncompensated Pitot-Static Airspeed Probes and Application of the Probes to Supersonic Cruise Vehicles. Technical Report NASA Technical Note TN D-6827, Research Engineering, NASA Dryden Flight Research Center.

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Abstract

Static-pressure position-error calibrations for a compensated and an uncompensated XB-70 nose-boom pitot-static probe were obtained in flight. The methods (Pacer, acceleration-deceleration, and total temperature) used to obtain the position errors over a Mach number range from 0.5 to 3.0 and an altitude range from 7600 meters (25,000 feet) to 21,000 meters (70,000 feet) are discussed. The error calibrations are compared with the position error determined from wind-tunnel tests, theoretical analysis, and a standard NACA pitot-static probe. Factors which influence position errors, such as angle of attack, Reynolds number, probe tip geometry, static-orifice location, and probe shape, are discussed. Also included are examples showing how the uncertainties caused by position errors can affect the inlet controls and vertical altitude separation of a supersonic transport.

EPrint Type:	Other
Keywords:	Pitot-static probes
Subjects:	(01 - 09) Aeronautics: (06) Avionics And Aircraft Instrumentation Aircraft/Project: XB-70
ID Code:	773
Deposited On:	09 March 2006
Additional Information:	42 pages.