NACA's A. Scott Crossfield first flew a series of aerodynamic parabolas to produce a short period of weightlessness, in a YF-84 at Edwards AFB, Calif. Maj. Charles E. Yeager (USAF) also flew some of these so-called "Keplerian trajectories."
EG-0040-02
NACA’s A. Scott Crossfield first flew a series of aerodynamic parabolas to produce a short period of weightlessness, in a YF-84 at Edwards AFB, Calif. Maj. Charles E. Yeager (USAF) also flew some of these so-called “Keplerian trajectories.”