Il pilota di ricerca della NASA Bill Dana prende un momento per guardare la NASA NB-52B crociera overhead dopo un volo di ricerca nel HL-10. Sulla sinistra, John Reeves può essere visto al cockpit del corpo di sollevamento. L'HL-10 è stato uno dei cinque progetti di cassone di sollevamento volati al Dryden Flight Research Center della NASA, Edwards, California, da luglio 1966 a novembre 1975 per studiare e convalidare il concetto di manovrabilità e atterraggio in sicurezza di un veicolo a bassa resistenza progettato per il rientro dallo spazio. Northrop Corporation ha costruito la HL-10 e M2-F2, i primi due della flotta di corpi di sollevamento 'pesanti' volati dalla NASA. Il contratto

• Collaboratore: DACameron / Alamy Foto Stock
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• Data acquisizione: 27 giugno 2013

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NASA research pilot Bill Dana takes a moment to watch NASA's NB-52B cruise overhead after a research flight in the HL-10. On the left, John Reeves can be seen at the cockpit of the lifting body. The HL-10 was one of five lifting body designs flown at NASA's Dryden Flight Research Center, Edwards, California, from July 1966 to November 1975 to study and validate the concept of safely maneuvering and landing a low lift-over-drag vehicle designed for reentry from space. Northrop Corporation built the HL-10 and M2-F2, the first two of the fleet of "heavy" lifting bodies flown by NASA. The contract for construction of the HL-10 and the M2-F2 was $1.8 million. "HL" stands for horizontal landing, and "10" refers to the tenth design studied by engineers at NASA's Langley Research Center, Hampton, Va. After delivery to NASA in January 1966, the HL-10 made its first flight on December 22, 1966, with research pilot Bruce Peterson in the cockpit. Although an XLR-11 vehicle, the first 11 drop flights from the B-52 launch aircraft were powerless glide flights to assess handling qualities, stability, and control. In the end, the HL-10 was judged to be the best handling of the three original heavy- weight lifting bodies (M2-F2/F3, HL-10, X-24A). The HL-10 was flown 37 times during the lifting body research program and logged the highest altitude and fastest speed in the Lifting Body program. On February 18, 1970, Air Force test pilot Peter Hoag piloted the HL-10 to Mach 1.86 (1, 228 mph). Nine days later, NASA pilot Bill Dana flew the vehicle to 90, 030 feet, which became the highest altitude reached in the program. Some new and different lessons were learned through the successful flight testing of the HL-10.

Parole chiave associate all'immagine

• bill dana
• boeing b-52
• corpo di sollevamento hl-10
• m2-f2
• nasa flight research center