The Bachem Ba 349 Natter was a World War II German point-defence rocket-powered interceptor, which was to be used in a very similar way to a manned surface-to-air missile.
After a vertical take-off, which eliminated the need for airfields, most of the flight to the Allied bombers was to be controlled by an autopilot.
The primary role of the relatively untrained pilot was to aim the aircraft at its target bomber and fire its armament of rockets.
The pilot and the fuselage containing the rocket-motor would then land using separate parachutes, while the nose section was disposable. The only manned vertical take-off flight, on 1 March 1945, ended in the death of the test pilot, Lothar Sieber.
Wingspan: 3.60 m
Wing depth: 1.0 m
Length: 6.10 m
Altitude (in flight): 2.25 m
Wing area: 3.6 m2
maximum take-off mass: 2,200 kg
a rocket engine Walter HWK 109-509 A-2 (adjustable between 150 and 1,700 kp, 1.47 to 16.671 kN) with 70 s burning time
four launch auxiliary rockets (reprehensible) Schmidding 109-533 (each with 1,200 kp, 11,768 kN) with 10 s firing time (the first sample machines had only two additional rockets)
Fuel: 600 kg, of which T-substance: 365 (435) l, C-substance: 165 (190) l.
800 km/h near the ground
Climbing speed: 200 m/s (calculated at 12 km operating height)