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Groen Hawk 4
2000
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Groen Brothers has been working on its Hawk Gyroplane family since 1986. Prototypes leading up ...
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| TYPE: Utility autogyro.PROGRAMME: Technology demonstrator development of Hawk 4. Will not be marketed. Announced late ... read more ... |
Groen Revcon 6G
2001
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Groen Gyrolifter
project
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TYPE: ConvertiplanePROGRAMME: Response to request of US Defense Advanced Research Projects Agency (DARPA) for proposals ...
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