P-791 – Experimental hybrid fly-by-wire airship

The Lockheed Martin P-791 – say “Pi-seven-ninety-one” – is a hybrid air vehicle as she is an actual multirole aircraft. She can be an aerostatic, aerodynamic, manned, unmanned, cargo, all-terrain and ISR (Intelligence Surveillance and Reconnaissance) airship as shown in the video below:

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Jet engine washing

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How a jet engine works

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