Presumed implementation of the component for solving the torpedo triangleĭescription of the component for calculating the parallax correction: 2-dimensional cam implementing function arc ctgĭrawing 6.differential gear performing the subtraction.2-dimensional cam inverting the function u * sin α.3-dimensional cam implementing the function u * sin α.2-dimensional cam, implementing the function ctg α.The component for solving the torpedo triangle is (most likely) implemented as a set of 3‑dimensional cams and differential gears: The component for solving the torpedo triangle calculated the deflection angle β from the following values: torpedo impact angle α and the quotient of the target and torpedo speed \(\frac\] S3 – valid on 1940 ĭescription of the component for solving the torpedo triangle: component for calculating the current target bearing ĭrawing 1.component for calculating the current angle on the bow.component for entering the target bearing.component for calculating the torpedo salvo spread angle.component for calculating maximum distance to target at the moment of the torpedo launch.component for calculating the gyro angle.component for calculating the parallax correction.component for solving the torpedo triangle.The torpedo calculator consisted of the following components: In case of damage to some of the calculator's components or failure of the electrical systems, it was possible to operate the calculator in the manual mode. In the standard operating mode, after entering the target data by means of the knobs, the calculator (taking into account the current target bearing transmitted from the periscope/UZO and own course received from the gyro-compass) automatically calculated the torpedo triangle solution and the torpedo salvo spread angle. ![]() On the type VII U-Boats it was installed horizontally, while on the type II, IX and XXI U-Boats – vertically. It was located in the conning towers of the U-Boats (except the type II U-Boats - due to lack of space in the conning tower, it was installed in the control room) – on the starboard side in the case of type VII boats and on the port side in the case of type IX and XXI boats. The calculator was enclosed in a steel casing, about 106 cm x 45 cm x 13 cm. ![]() S3 – early version – view after removing front cover S3 – early version – view of the front cover In the same year – after successfully passing all tests – the newly manufactured calculators were fitted in the front-going U-Boats.įrom 1941 when the calculator entered service, till the end of the war, there were some modifications to its construction. In 1941 it was (together with the whole torpedo fire control system) delivered to the Kriegsmarine for testing. The development of this calculator started around the year 1939. Calculating the torpedo salvo spread angle ψ.Calculating the deflection angle β and converting its value into the gyro angle ρ (taking into account the parallax correction δ, resulting from the different location of the torpedo aiming device and torpedo tube, as well as the correction resulting from the torpedo turn after leaving the tube).It was an electro-mechanical device that was designed for solving two problems: The heart of the torpedo fire control system was the torpedo calculator designated T.
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