A technique for measuring mesospheric densities with the X-15 research airplane.
Atmospheric density measurements for altitudes up to 74 km from X-15 flights using stagnation pressure method
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Atmospheric density measurements for altitudes up to 74 km from X-15 flights using stagnation pressure method
Cost data survey of X-15 as reusable spacecraft
Statistical analysis of landing contact conditions and slideout distances of X-15 research airplane
X-15 flight test of skin friction gauge
Analog simulation to compare pilot performance in using operational X-15 instrument panel, and vertical scale, fixed index instrument display panel
Environmental simulation facilities, biplanar optical systems for nonplanar free flight tests, hypersonic boom and air radiation measurements, and X-15 and wedge wake studies
Component performance and flight operations of X-15 research airplane program, considering engine, auxiliary power and propellant system
The X-15 rocket-powered research aircraft was developed by the integrated effort of various areas such as aerodynamics, thermodynamics, and structures. The propulsion subsystem development at the onset of the program was handicapped for varied causes. As a result, early in the flight testing phase, many time-consuming and costly delays were encountered as a result of individual component failures. A review of the X-15 propulsion subsystem components is presented, with a discussion of some of the development problems, how they were alleviated, and how they may be reduced or avoided in future programs. In order to avoid these problems in the future, a program is recommended in the hope that it will increase component reliability commensurate with vehicle objectives.
Paper presents the results of physiological tolerance tests of the pilot to the oscillating accelerations of large amplitude and long duration which might occur as a result of aircraft heading errors during reentries from the altitude mission in the X-15 without control augmentation.
Wind tunnel investigation of pressure fluctuations on the upper vertical tail of the x-15 when mated to the b-52 carrier aircraft
Paper describes examples which show how wind-tunnel model tests of the actual configuration of the aircraft aid in aerothermodynamic analyses and how these tests have made possible increased accuracy in structural temperature prediction. Also, from this and other research, development and design work on the X-15 has been done to accomplish a design consistent with the specified flight requirements. In this work, structural temperatures have been held within acceptable limits by providing sufficient heat sink material. Limited areas of the skin and leading edges are expected to attain temperatures greater than 1,200 degrees F. However, these areas have been carefully investigated for the effect of these higher temperatures on the structure and have been found to be satisfactory.
Discussion of component and system checkout and operational flight procedure for the x-15 airplane
The content of this paper is concerned primarily with testing and determining the suitability of such factors as cockpit mobility, escape potential, mechanical reliability, post-separation performance, and airframe compatibility. Integrating the results of the various studies led to the conclusion that the pressure suit in combination with the open ejection seat would best satisfy the X-15 emergency-escape requirements by virtue of elimination of capsule-imposed penalties on aircraft performance and significant reduction in development time.
The x-15 flight control and stability system
Carry loads, aerodynamic interference effects and drop characteristics of x-15 through b-52 flow field
X 15 flight tests showing structure, powerplant, and auxiliary systems problems, and emphasizing pilots boost, entry, and landing techniques
Boundary layer, flight control, and structural dynamics research for x-15a aircraft
Pilot performance during boost of x-15a aircraft to high altitude