Airspeed Limitations

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Maximum Allowable Airspeed


Refer to "Aircraft Reference Information (X-15A-2)" for the maximum allowable Mach number for varying flight altitudes.


The maximum q (dynamic pressure) is 2200 psf with modified movable vertical stabilizer and ventral.


Because of the exploratory nature of the X-15 research program, limitations for all flights beyond 3.5 Mach number will be based on separate mission analysis.



Landing Gear and Wing Flaps Lowering Speed


Maximum allowable airspeed for extending the landing gear and wing flaps, or for flight with the landing gear and wing flaps fully extended, is 300 knots IAS. Flight with the landing gear and flaps extended at speeds above 300 knots IAS may cause structural damage.



See also:


Aircraft Reference Information (X-15A-2)