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| Keywords: D-558-2 pre-flight operations DVIDS703596.jpg en This 1949 photograph shows a Douglas D-558-2 undergoing pre-flight operations on Rogers Dry Lakebed at Edwards Air Force Base Note the small inlet on the left side used for the turbo-jet engine in this aircraft's propulsion system An often overlooked aspect of flight research is the large amount of pre- and post-flight maintenance and fabrication work it requires Before a flight the aircraft's systems had to be checked out the instrumentation calibrated cameras and oscillographs loaded with film and the aircraft serviced with propellants After a landing the data had to be reduced by human computers in the case of the early X-planes including the D-558s which would have been X-planes had they been sponsored by the Air Force instead of the Navy The computers read the films and converted their markings into data on sheets or in graphs that research engineers could then use in their analyses NASA Identifier NIX-E49-00223 2009-09-23 Glenn Research Center https //www dvidshub net/image/703596 703596 2012-10-10 15 21 WASHINGTON DC US PD-USGov Aircraft at Rogers Dry Lake Images from DoD uploaded by Fæ Douglas D-558-II | ||||
