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A segmented mirror is an array of smaller mirrors designed to act as segments of a single large curved mirror. The segments can be either spherical or asymmetric (if they are part of a larger parabolic reflector [1]). They are used as objectives for large reflecting telescopes. To function, all the mirror segments have to be polished to a ...
The McDonnell Douglas (later Boeing) X-36 Tailless Fighter Agility Research Aircraft is an American stealthy subscale prototype jet designed to fly without the traditional empennage found on most aircraft. This configuration was designed to reduce weight, drag and radar cross section, and increase range, maneuverability and survivability.
In X-ray telescopes, the X-rays reflect off a highly precise metal surface at almost grazing angles, and only a small fraction of the rays are reflected. [36] In flying relativistic mirrors conceived for X-ray lasers, the reflecting surface is a spherical shockwave (wake wave) created in a low-density plasma by a very intense laser-pulse, and ...
48" speculum metal mirror reflector: Last large reflector with a speculum metal mirror, world's largest equatorially mounted telescope for several decades. [13] Melbourne Observatory, Melbourne, Australia: 1868–1889 William Lassell 48-inch [14] 1.22 m: 48" speculum metal mirror reflector: Malta: 1861–1865 Rosse telescope: Leviathan of ...
The Boeing X-48 is an American experimental unmanned aerial vehicle (UAV) built to investigate the characteristics of blended wing body (BWB) aircraft. Boeing designed the X-48 and two examples were built by Cranfield Aerospace in the UK. Boeing began flight testing the X-48B version for NASA in 2007. The X-48B was later modified into the X-48C ...
The Aurora X-65 CRANE is an experimental aircraft that is currently under development. In charge are the Defense Advanced Research Projects Agency (DARPA) and the Boeing subsidiary Aurora Flight Sciences .
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