Feb 14 1957

From The Space Library

NACA established "Round Three" Steering Committee to study feasibility of a hypersonic boost-glide research airplane. "Round Three" was considered as the third major flight research program which started with the X-series of rocket-propelled supersonic research airplanes, and which considered the X-15 research airplane as the second major program. The boost-glide program eventually became known as Dyna-Soar.