A 'bubble canopy' is a
canopy made like a soap
bubble, which attempts to provide 360° vision to the pilot.
History
Bubble canopies have been in use since
World War II. The British already had the "Malcolm hood" which was a bulged canopy but the British
Miles M.20 was one of the first aircraft designs to feature a true bubble canopy and although it never went into production the idea was used for other British fighters. It was also taken on by the US for the
P-51 Mustang and
P-47 Thunderbolt among others.
Examples
|  MiG-29 on the ground with canopy open |
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