More Details for 1969-06-03
Original archive entry. The text, images and links below are kept as they were written.
Engineering evaluation of Apollo 10 launch vehicle
The early engineering evaluation of the Apollo 10 launch vehicle, Saturn V AS-505, indicated that the major flight objectives were accomplished.
Indications were that all detailed test objectives were also accomplished.
The basic performance of the Saturn V was satisfactory, but the following problem areas were identified for more extensive investigation:
- The S-IVB stage auxiliary hydraulic pump performance degraded during S-IVB second burn. The hydraulic system cycle after second burn also indicated degraded pump performance.
- Astronauts reported low-frequency lateral and longitudinal oscillations throughout the S-IVB first and second burn, with high-frequency vibration superimposed beginning at 4 minutes 40 seconds into second burn and continuing until engine cutoff. While the associated amplitudes of both high and low frequency were well within structural and component vibration qualification levels, a priority effort to identify the source of these vibrations was under way.