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Measurement of the Maximum Speed Attained by the X-15 Airplane Powered with Interim Rocket EnginesOn August 4, 1960, a flight was made with the X-15 airplane to the maximum speed expected with the interim rocket engines. Fully corrected airspeed measurements showed that the maximum Mach number of 3.1 +/- 0.04 and maximum true airspeed of 2,196 mph +/- 35 were attained at an altitude of 69,600 feet. At Mach numbers greater than 2.0 the pitot-static tube exhibited a negative static-pressure error which resulted in a Mach number correction of -0.18 at the maximum speed.
Document ID
20040008099
Acquisition Source
Langley Research Center
Document Type
Other - NASA Technical Note (TN)
Authors
Stillwell, Wendell H. (NASA Flight Research Center Edwards, CA, United States)
Larson, Terry J. (NASA Flight Research Center Edwards, CA, United States)
Date Acquired
August 21, 2013
Publication Date
September 1, 1960
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
H-187
NASA-TN-D-615
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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