A NASA SR-71 made its successful first flight Oct. 31 as part of the NASA/Rocketdyne/Lockheed Martin Linear Aerospike SR-71… https://www.rawpixel.com/image/441507/free-photo-image-nasa-military-aerospikeFree Image from public domain licenseHead-on view of NASA's SR-71B on the ramp at the Air Force's Plant 42 in Palmdale, California. July 24th, 1991. Original… https://www.rawpixel.com/image/440020/free-photo-image-sr-71-ship-planeFree Image from public domain licenseSR-71 with the Linear Aerospike SR-71 Experiment on the rear fuselage as seen from above. Original from NASA . Digitally… https://www.rawpixel.com/image/441510/free-photo-image-jet-aerospike-aircraftFree Image from public domain licenseThe NASA SR-71A successfully completed its first cold flow flight as part of the NASA/Rocketdyne/Lockheed Martin Linear… https://www.rawpixel.com/image/441496/free-photo-image-army-aircraft-carrierFree Image from public domain licenseCollection of NASA's research aircraft on the ramp at the Dryden Flight Research Center: X-31, F-15 ACTIVE, SR-71, F-106, F… https://www.rawpixel.com/image/441458/free-photo-image-plane-phantom-fighterFree Image from public domain licenseA NASA SR-71 refuels with an Edwards Air Force Base KC-135 during the first flight of the NASA/Rocketdyne/ Lockheed Martin… https://www.rawpixel.com/image/441482/free-photo-image-nasa-aerospike-air-forceFree Image from public domain licenseA NASA SR-71 successfully completed its first flight 31 October 1997 as part of the NASA/Rocketdyne/Lockheed Martin Linear… https://www.rawpixel.com/image/441495/free-photo-image-nasa-aerospike-aircraftFree Image from public domain license