Ram Jet Helicopter Development - Model XH-20 Open PDF Document Details Document Type Technical Report Publication Date Sep 15, 1951 Accession Number ADA800223 Entities People C. R. Wood Jr. Organizations McDonnell Aircraft Corporation Tags Communities of Interest Air Platforms DTIC Thesaurus Topics Calibration Construction Contracts Control Sticks Coverings Diameters Disasters Fabrication Government Procurement Governments Helicopters Instrumentation Materials Missouri Oscillographs Test And Evaluation Test Stands