
This rear view of the Linear Aerospike SR Experiment (LASRE) pod shows the business end of the linear aerospike rocket…

One of three X-15 rocket-powered research aircraft being carried aloft under the wing of its B-52 mothership.

The X-15 aircraft, ship #1 (56-6670), sits on the lakebed early in its illustrious career of high speed flight research.

The X-15 (56-6670), seen here on the lakebed at Edwards Air Force Base, Edwards, CA.

This photo shows one of the four attempts NASA made at launching two X-15 aircraft in one day.

NASA research pilot Neil Armstrong is seen here in the cockpit of the X-15 ship #1 (56-6670) after a research…

X-15 personnel.

NASA research pilot Joe Walker flew the X-15 rocket plane to an altitude of 271,000 feet, or 51 miles high,…

The X-15 flight simulator, located at the NASA Flight Research Center, Edwards, CA, in the 1960s.