DATA:

OVERALL LENGTH

BODY LENGTH

BODY DIAMETER

WALL THICKNESS

TAIL LENGTH

TAIL WIDTH

TAIL WEIGHT

WEIGHTS:

Type of Filling

Weight of Filling

Total Weight

Chg/Wt. Ratio

FUZING:

Nose:

AN-M103A1, AN-M103, M103, M139, M139A1, AN-M139A1, M140, M140A1, AN-M1401A1, M163, M165

Tail:

T75E2

Bomb Construction:

The VB-3 ist a guided bomb similar to the VB-1 with the major difference that its flight may be controlled in range as well as in azimuth, and is known generally as the "Razon" bomb. Like the VB-1, it has special tail unit fitted to a conventional bomb sight, the guided action being relatively small so that the trajectory at time of impact is essentially vertical.

TAIL UNIT:

The controls for the VB-3 are contained in the cylindrical section of the tail unit and consists of a radio receiver, a gyro, and a servo motor. Surrounding flight while the after one contains the elevators and rudders.

On each of the four struts supporting the after shroud is an aileron controlled by the gyro. These four ailerons steady the bomb and prevent it from rotating while in flight. They are seto 90° apart and operate in pairs, i.e. those ailerons placed oppo-site to each other move together in unison.

The elevator and rudders located in the after shroud constitute the means for altering flight in azimuth and range. They operate in pairs in a manner similar to the ailerons, with the servo motor controlling their movements through connecting rods extending from the central unit. At present two bombardiers are required with the VB-3; one controls range and the other azimuth. They work indespendently of each other and by the use of a special bomb sight are always able to see the bomb in flight, superimposed on the target. As the bombardiers manipu-late their control switches, radio signals are sent to the receiver; the receiver activates the servo motor which in turn moves the rudders and elevators, adjusting the flight of the bomb.

As in the VB-1, flares are employed to assist the bombardier in the visual control of the flight of the bomb. Currently used flares are the T6E1 (white), T7E1 (red), and T8E1 (green) of 1,000,000 candlepower electrically inginet three to four se-conds after release and with one to two minutes burning time. Mechanically-activa-ted flares, T21, T22, and T23 are under development.

SUSPENSION:

Suspension lugs are welded to the case in a manner similar to the G.P. bombs. See Introduction, page 37.

COLOR AND MARKINGS:

The Markings are similar those of the AN-M65 1000 lb. bombs. See Introduction, page 37.

REMARKS:

The gyros must be started before the bomb is released.