Browse Items (2 total) Browse All Browse by Tag Search Items Creator is exactly "Ely, Olen P." Sort by: TitleCreatorIdentifierDate Added "Rocket exhaust effects on radio frequency transmission." Ely, Olen P. 1965-02-01 "Flight Evaluation of the Command and Communication System Aboard AS-501." Ely, Olen P. 1968-05-03 Output Formats atom, csv, dc-rdf, dcmes-xml, json, omeka-xml, rss2 Refine search Identifier Select...FlevalofthecomandcommusysabAS501_080408170122.pdfrockexheffects_071707095315.pdfspc_stnv_000301spc_stnv_000668 Title Select..."Flight Evaluation of the Command and Communication System Aboard AS-501.""Rocket exhaust effects on radio frequency transmission." Alternative Title Select...TM X- 53737 Description Select...Presented by Olen P. Ely, National Aeronautics and Space Administration, Marshall Space Flight Center, Huntsville, Alabama and R. W. Hockenberger, International Business Machines. Paper that explores the effects of rocket-engine exhaust on radio-signals.The first test of the command and communications system, a unified frequency S-band system, aboard AS-501 was successful. Compatibility of this system with the MSFN/USB sites was established. The onboard transponder and antenna system including antenna switching performed as predicted. The command performance was excellent with 5747 valid commands received onboard out of 5748 commands transmitted. Data reduction problems prevented a complete analysis of the tracking data. Telemetry system performance was satisfactory with a measured bit-error-rate of 4 x10-5 while over the Ascension Island station. This flight provided valuable data which can be used to define vehicle to-ground-station interfaces, to establish attitude constraints during translunar injection, and to improve operational procedures. One more test as successful as the AS-501 test would qualify the system as operational.; May 3,1968. Creator Remove filter...Ely, Olen P. Temporal Coverage Select...1960-1969 Subject Select...Apollo projectRadio frequenciesRadio transmissionRocket enginesRocket exhaustSaturn launch vehiclesSaturn projectSolid propellant rocket enginesSpacecraft communicationUnified S band Type Select...MemorandumsReportsText Language Select...en
