article · German
Mechanisches Rechnen mit präzis geformten Stahlkörpern und Zahnrad-Getrieben
A 2015–2016 research article by A. Masson investigating 143 negative-transparency numerical tables held at the Museum für Kommunikation, Bern, which document HASLER's ballistic cam-body (Formkörper) calculations prepared for the Italian anti-aircraft gun 90/53 circa 1950–1951. The article describes the operating principle of three-dimensional cam bodies and gear mechanisms in mechanical fire-control computers (GAMMA-JUHASZ and GAMMA-HASLER), analyzes whether the five sets of tables correspond to known Swiss HASLER command instruments, and includes appendices on air resistance, ball integrators, and the chronological development of HASLER devices.
ballistic cam bodiesmechanical analog computinganti-aircraft fire controlHASLER command instruments