The M9 gun director was an electronic director developed by Bell Labs during World War II. This computer continuously calculated trigonometric firing solutions for anti-aircraft weapons against enemy aircraft.

A director, also called an auxiliary predictor, [1] is a mechanical or electronic computer that continuously calculates trigonometric firing solutions for use against a moving target, and transmits targeting data to direct the weapon firing crew.

Eventually more than 3000 of the gun directors, designated the M-9, were built. Simple arithmetic, differentiation, and integration were performed in the M-9 by 28 operational amplifiers (op amps). The output of the op amps went to three 50-cm-diameter cast-iron potentiometers, the output voltage of which in turn drove the gun controls.

The M9 Director, which is a part of that Battery's regular equipment, was set up in the foreground. Following a gun drill by the Battery and the singing of the "Star- Spangled Banner," with Alan W. Morrison leading, R. K. Honaman, Director of the School for …

The M9 gun director was the practical result of Parkinson's dream. The M-9 didn't bring down a German bomber with every shot, but it lowered the number of shells fired per kill from thousands to about a hundred--a phenomenal change.

2023年1月28日 · The m9 gun director was an electronic director developed by bell labs during world war ii.this computer continuously calculated trigonometric. Designed by bell labs engineer david parkinson, who conceived it in a dream, the m9 director aimed antiaircraft guns.

Bell Labs delivered an analog computer known as the M9 Director for this role, able to control four of the Army's standard 90 mm M3 guns. The entire system, including the M9, was demonstrated in complete form on 1 April 1942. A contract for over 1,200 systems arrived the next day. Bell also worked on their own microwave radar as a backup project.

Designed by Bell Labs engineer David Parkinson, who conceived it in a dream, the M9 director aimed antiaircraft guns. It was especially successful in shooting down German V-1s, an early form of cruise missile. Teaching young sailors the complexities of weapons systems was difficult.

The M9 Gun Director was an electronic director developed by Bell Labs during World War II. This computer continuously calculated trigonometric firing solutions for anti-aircraft weapons against enemy aircraft.

Designed by Bell Labs engineer David Parkinson, who conceived it in a dream, the M9 director aimed antiaircraft guns. It was especially successful in shooting down German V-1s, an early form of cruise missile.</p>