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
A US 90 mm anti-aircraft gun and crew during a demonstration at Bell Laboratories in 1943. The M9 gun director can be seen in the center background of the photo.
The SCR-584 was an automatic-tracking microwave radar developed by the MIT Radiation Laboratory during World War II. It was one of the most advanced ground-based radars of its era and became one of th
M9 gun director
…World War II. This computer continuously calculated trigonometric firing solutions for anti-aircraft weapons against enemy aircraft. When cued by the SCR-584 centimetric gun-laying radar and used in concert with anti-aircraft guns firing shells with proximity fuzes, it helped form the most effective anti-aircraft…
Exterior view. All operational equipment was housed inside, although the M-9 director and electrical generators were separate. The antenna retracts into the van for travel.
Field deployment of the SCR-584 on Peleliu during World War II. The high elevation angle of the dish combined with a lack of visible activity suggests that the radar is in its helical scan mode.
Operators console for the SCR-584