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Thread: Mystery Planes
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Old 22nd Jun 2003, 15:05
  #11 (permalink)  
BEagle
 
Join Date: May 1999
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21 is not an Intruder prototype, it is the Bell X-5 which was used for early polymorphic trials - the wing sweep could be changed manually on the ground for research purposes. It was based on a German research ac discovered after the end of WW II.
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