DR. ROBERT C. SEAMANS, JR., Associate Administrator, NASA. I would like first to say that when I joined NASA almost two years ago one of the first places that I went to was Langley Field, and there reviewed work going on on a research base under Dr. John Houbolt. This work related both to rendezvous and what a man could do at the controls, of course under simulated conditions, as well as the possibility of lunar orbit rendezvous.
It was pointed out at that time that by not taking certain of the essential elements down to the lunar surface and back to a spacecraft in orbit around the moon, taking it down the last hundred miles and back up, that it would be possible to scale down the launch vehicle requirements in the ratio of roughly two to one. It was clear to us at that time that the key to such mode involves a rendezvous that must be carried out with very high regard to reliability and safety considerations.
Following this time, that is, in the following December and January months, NASA was carefully considering manned flights beyond Mercury. It was quite reasonable at that time we should not only consider the direct mode, which we did, but also the various types of rendezvous, both in orbit around the earth, in orbit around the moon, and on the lunar surface...
Thus my favorite From the Earth to the Moon episode was born. And who would build the lander? Why, Tom Kelly and the Grumman gang, of course:DR. D. BRAINERD HOLMES, Director, Office of Manned Space Flight, NASA...We who study this program, and who also bear the responsibility for implementing it, have unanimously come to the conclusion know there is no one to contest this conclusion studied, all are feasible.
However, the group within NASA has further come to the conclusion that the advantages of the lunar orbit rendezvous mode from the standpoint of cost, from the standpoint of schedule, from the standpoint of simplicity, from the standpoint of minimal additional developments which must be undertaken immediately, is the mode to go.
In January 1962 we competed for a NASA-funded study of LOR and the LM. Although we thought our proposal was a good one, Convair won the award: fifty thousand dollars for a four-month study. We proceeded with our company-funded study anyway, and in June we submitted our study report to NASA. Shortly thereafter we were invited to brief our findings to Joseph F. Shea at NASA Headquarters in Washington, D.C.
Shea had recently been recruited to NASA by Brainerd Holmes, NASA’s associate administrator for Manned Space Flight, and had been assigned to settle the “mission mode” issue. An experienced systems engineer from the Titan ballistic missile guidance program, Shea projected intelligence, engineering talent, self-confidence, and leadership. He was the right man to make a momentous decision.
In my first meeting with him in Washington, Shea continually interrupted my briefing with difficult but logical questions and meaningful comments: What makes you so sure the rendezvous can be accomplished? It’s a long way from home, and there won’t be much help from the ground. Have you calculated the allowable guidance errors for each rocket firing during rendezvous? How good are your LM weight estimates? If LM is overweight, it gets multiplied all the way down the launch stack.
Our study results on the relative advantages of LOR were by then quite mature, and I was on solid ground with our data, able to parry Shea’s thrusts. Our LM design studies had also progressed to the point where they seemed credible, and each major design feature was supported by technically satisfying arguments. John Houboult joined enthusiastically in the interrogation; it was like defending a doctoral dissertation.
After two hours of grilling, Shea smiled and said that we had done a useful study on our own initiative and promised to consider our input in reaching his decision. He complimented me on my presentation and in-depth knowledge. I left the room elated that I had survived a baptism by fire.
Two weeks later NASA announced that they had selected LOR as the Apollo mission mode and would proceed with an industry competition for the design, development, and construction of the lunar module. The LM request for proposal was issued in late July, with responses due in early September. We were ready.
Indeed, they were ready, and they won. Then the real fun began. Anyway, Happy LOR Day to all who celebrate!



