Piasecki Speed Cobra. A proposed testbed for Piasecki's proprietary vectored thrust ducted propeller (VTDP) design from 1996.

Posted by NinetiethPercentile@reddit | WeirdWings | View on Reddit | 2 comments

Piasecki Speed Cobra. A proposed testbed for Piasecki's proprietary vectored thrust ducted propeller (VTDP) design from 1996.