NASA NTRS · 19640000132
Known and unknown information on manned planetary flight
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H H Koelle. 1963-09-30. Manned Planetary Flight - Where are We Today. https://ntrs.nasa.gov/citations/19640000132
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The studies reported herein were prepared by Lockheed Missiles & Space Company for the George C. Marshall Space Flight Center, Huntsville, Ala., under Contract No. NAS 8-5024. The results of the Early Manned Interplanetary Mission Study are reported in two volumes. Volume 1 contains the unclassified portion of the studies and Volume 2 presents the classified (CRD) studies relating to orbital escape propulsion systems.
Early in the Mercury design stages, it became evident that this project would require an extensive tracking and data-acquisition network. The presence of man in a satellite demanded that considerably different requirements be placed on the tracking network than had hitherto been necessary for unmanned vehicles. The most significant of these requirements was that it was now imperative that the system respond rapidly to contingency situations to insure adequate safety of the astronaut.