|astronautix.com||Six flights of the Apollo Lunar Landing Research Vehicle|
Six flights of the Lunar Landing Research Vehicle (LLRV) were made during the month, bringing the total number to seven. The project pilot, Joseph Walker, made all flights and demonstrated a rapid increase in the ease and skill with which he handled the craft as the flights progressed.
Altitudes to between 18 and 21 m (60 and 70 ft) and flight duration up to three minutes were attained.
With the jet engine remaining vertical, attitude angles in excess of 20 degrees were demonstrated in both pitch and roll. Lift rockets were used on the last four flights. Six knots (6 n mi per hr) had been tentatively set as the maximum permissible wind velocity for flying. References: 16 .