EVALUATION OF BLUE SILK/G.P.I. MARK 4A. PART 2. PERFORMANCE OVER VARIOUS TERRAINS AND UNDER SIMULATED OPERATIONAL CONDITIONS Open PDF Document Details Document Type Technical Report Publication Date May 01, 1956 Accession Number AD0101802 Tags Communities of Interest Air Platforms Weapons Technologies DTIC Thesaurus Topics Accuracy Aircrafts Altitude Calibration Control Panels Flight Glaciers Government Procurement Governments Grids Ground Speed Latitude Sextants Terrain Test And Evaluation United States United States Government