A bomb bay is an openable hatch in the floor of a bomber aircraft, that the bombs are dropped through. A bomber is a military aircraft designed to attack ground targets, primarily by dropping bombs. ... The Massive Ordnance Air Blast (MOAB) bomb, produced in the United States. ...
The bomb, weighing 27 tonnes, was so large (8 metres long by 2 metres in diameter) that the Tu-95 had to have its bombbay doors removed.
The bomb was attached to an 800 kg fall retardation parachute, which gave the release and observer planes time to fly about 45 km from ground zero.
The bomb was dropped from an altitude of 10,500 metres, and designed to detonate at a height of 4,000 m over the land surface (4,200 m over sea level) by barometric sensors.
By modern standards, the bombs that destroyed Hiroshima and Nagasaki in 1945 may perhaps be considered tactical weapons (with yields between 13 and 22 kilotons (54 to 92 TJ)), although modern tactical weapons are considerably lighter and more compact.
Gravity bombs are designed to be dropped from planes, which requires that the weapon can withstand vibrations and changes in air temperature and pressure during the course of a flight.