At what altitude did the Ju 87 recover automatically?

When the aircraft was reasonably close to the target, a light came on at the contact altimeter — an altimeter fitted with an electrical contact that triggers at a preset altitude — to indicate the bomb release point, normally at a minimum height of 450 m (1,480 ft). An elongated U-shaped fork beneath the fuselage swung the bomb clear of the propeller's path, and the aircraft automatically began a 6g recovery.

Red tabs protruding from the wing's upper surfaces served as a visual indicator for the pilot: they signaled that, should the pilot black out from g-force, the automatic dive-recovery system would activate.

Sirens driven by ram air, officially called "Lärmgerät" (noise device), were mounted on the leading edges of the fixed main landing gear leg fairings. They became a propaganda symbol of German air power and of the Blitzkrieg victories of 1939-1942, and also gave the Stuka pilot an audible reference for speed. There were two propeller-driven sirens, 0.7 m (2.3 ft) in diameter, fitted to the Ju 87 B-1 model. They were mounted either on the wing's leading edge or on the front edge of the fixed main landing gear fairing. They cost the bomber 15 mph in speed due to the drag they generated, a flaw that proved lethal against anti-aircraft guns and fighters.