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Flight-determined lag of angle-of-attack and angle-of-sideslip sensors in the YF-12A airplane from analysis of dynamic maneuversMagnitudes of lags in the pneumatic angle-of-attack and angle-of-sideslip sensor systems of the YF-12A airplane were determined for a variety of flight conditions by analyzing stability and control data. The three analysis techniques used are described. An apparent trend with Mach number for measurements from both of the differential-pressure sensors showed that the lag ranged from approximately 0.15 second at subsonic speed to 0.4 second at Mach 3. Because Mach number was closely related to altitude for the available flight data, the individual effects of Mach number and altitude on the lag could not be separated clearly. However, the results indicated the influence of factors other than simple pneumatic lag.
Document ID
19740026347
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Technical Note (TN)
Authors
Gilyard, G. B. (NASA Flight Research Center Edwards, CA, United States)
Belte, D. (NASA Flight Research Center Edwards, CA, United States)
Date Acquired
September 3, 2013
Publication Date
October 1, 1974
Subject Category
Aerodynamics
Report/Patent Number
NASA-TN-D-7819
H-767
Accession Number
74N34460
Funding Number(s)
PROJECT: RTOP 766-72-02
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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