Combining with the door-type trajectory commonly used by the parallel robot, it adopts 3-, 5-, and 7-time B-spline curve motion law to conduct the trajectory planning in operation space. Taking the ...

The Trajectory. Fifty years ago on May 5, ... NASA astronaut Alan Shepard launched at 9:34 a.m. EDT aboard his Freedom 7 capsule powered by a Redstone booster to become the first American in space.

At 9:37 AM on May 5, 1961, the Freedom 7 spacecraft, now a Smithsonian artifact, was launched from Cape Canaveral, lobbing Mercury astronaut Alan Shepard Jr. (1923-1998) to an altitude of 116.5 miles.

Freedom 7, the Mercury spacecraft that NASA astronaut Alan Shepard rode on a 15-minute suborbital flight on May 5, 1961, is leaving the U.S. Naval Academy in Annapolis, Md., where it has been on ...