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X-15 attached to its B-52 mother ship with a T-38 flying nearby. The X-15 had a thick wedge tail to enable it to fly in a steady manner at hypersonic speeds. [16] This produced a significant amount of base drag at lower speeds; [16] the blunt end at the rear of the X-15 could produce as much drag as an entire F-104 Starfighter. [16]
Twelve pilots flew the X-15 over the course of its career. Scott Crossfield and William Dana flew the X-15 on its first and last free flights, respectively. Joseph Walker set the program's top two altitude records on its 90th and 91st free flights (347,800 and 354,200 feet, respectively), becoming the only pilot to fly past the Kármán line, the 100 kilometer, FAI-recognized boundary of outer ...
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X-15 is a 1961 American aviation drama film that presents a fictionalized account of the X-15 research rocket aircraft program, the test pilots who flew the aircraft, and the associated NASA community that supported the program. X-15 starred David McLean, Charles Bronson, [Note 1] James Gregory and Mary Tyler Moore (in her first feature film ...
Old English is essentially a distinct language from Modern English and is virtually impossible for 21st-century unstudied English-speakers to understand. Its grammar was similar to that of modern German: nouns, adjectives, pronouns, and verbs had many more inflectional endings and forms , and word order was much freer than in Modern English.
At the start of the 2010/11 school year, LearnThat Foundation started to make free tutoring available to third graders in the U.S. and Canada. This program, known as Vocabulary Junction, was expanded to serve all English learners, worldwide, during their first three years of learning the language. [citation needed]
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