As we wade deeper and deeper into Descent Mission Techniques, one thing coming into focus is that, of all IMU error sources, the two that hurt the most are accelerometer bias and y-axis (pitch) misalignment at PDI. Having recognized this, we are now proposing some specific procedures to minimize them. This memo is to tell…
Month: May 1969
Attention worthy Descent Program Anomaly
Gene Kranz brought the attached G mission LUMINARY Anomaly Report to my attention. I have no idea how he happened to find it amongst all the more insignificant ones. No one else seemed particularly aware or concerned about it, but I wanted to bring it to your attention….
Descent, Lunar Surface, and Ascent Mission Techniques with the H crew
On May 20 and 21 we reviewed Descent, Lunar Surface, and Ascent Mission Techniques with the H crew (Pete Conrad and co.). This get together had two major objectives – to tell the H crew how we think these things should be done and conversely, for the first time to get a flight crew reaction…
DPS low level propellant light
During our final review of the Descent Mission Techniques on May 28, GAEC presented a comprehensive review of the low level DPS propellant light – its operation and accuracy. The most significant piece of information coming from this was that we are assured of about 98 seconds more DPS operation at the hover thrust level…