found: Work cat: 2019025124: Larrimer, Bruce I. Promise denied, 2019:CIP galley, t.p. (NASA's X-34) p. vi (NASA-Orbital Sciences X-34 Technology Testbed Demonstrator; research aircraft) p. 1-2 (evolution of the X-34: from its initial concept as the X-34 Reusable Small Booster, through the X-34 Orbital Sciences Corporation--Rockwell American Space Lines (small-payload X-34A and larger-payload X-34B), to the downsized Orbital Sciences X-34 Technology Testbed Demonstrator concept) p. 19 (small two-stage winged booster) p. 33 (X-34 TTD; research X-plane) p. 83 (planned suborbital and orbital flight) p. 92 (single-stage-to-orbit precursor vehicle) p. 106 (winged vehicle; used a carrier aircraft; intended as a reusable launch vehicle and experiment flight host) p. 123 (X-34 Technology Testbed Demonstrator; hypersonic air-launched boost-glider; unpiloted) p. 253 (experimental X-34 rocket plane; X-34 spaceplane) p. 305 (not a single-stage-to-orbit vehicle)
found: NASA website, June 17, 2019:NASA Armstrong fact sheet: X-34 Advanced Technology Demonstrator (was expected to fly at up to eight times the speed of sound and reach altitudes of approximately 50 miles before descending to a controlled landing on a runway; was to have an automatic landing system, linked to GPS, enabling it to fly a mission profile and land itself)
found: Wikipedia, June 17, 2019:Orbital Sciences X-34
notfound: Encyclopaedia Brittanica online, June 27, 2019
