Dever (Decollage Vertical - Vertical Takeoff) is a 1950's French supersonic VTOL interceptor design with a combination of rocket and jet engine propulsion. Equipped with single Matra missile, this aircraft is more akin to a manned missile (with another missile on the tow).
This is some unconventional design to anticipate the unavailability of conventional airfield after enemy attacks, reminds me of German's triebflugel design.
i don't know what they consume back in 50's but i imagine it's some strong stuff...
yes, it can stand