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The key feature of the Ward Leonard control system is the ability to smoothly vary the speed of a DC motor, including reversing it, by controlling the field and hence the output voltage of a DC generator, as well as the field of the motor itself. As the speed of a DC motor is dictated by the supplied voltage, this gives simple speed control.
This is a list of United States Army fire control, and sighting material by supply catalog designation, or Standard Nomenclature List (SNL) group "F".The United States Army Ordnance Corps Supply Catalog used an alpha-numeric nomenclature system from about the mid-1920s to about 1958.
In electric power systems and industrial automation, ANSI Device Numbers can be used to identify equipment and devices in a system such as relays, circuit breakers, or instruments. The device numbers are enumerated in ANSI / IEEE Standard C37.2 Standard for Electrical Power System Device Function Numbers, Acronyms, and Contact Designations .
This may be combined with brakes to further control the steering radius. [1] The obvious disadvantage to this design is the cost and complexity of two drive trains, and the increased maintenance load that implies. Another is that if one engine fails, the other cannot be used to drive both tracks.
A US Army Panther mine-clearing variant of the M60 Patton tank. It is fitted with mine rollers and operated by remote control. A mine roller or mine trawl is a demining device mounted on a tank or armoured personnel carrier, designed to detonate anti-tank mines. It allows engineers to clear a lane through a minefield which is protected by enemy ...
FFV 028 SD – Version fitted with a ball-bearing based anti-handling device. The mine self-destructs after between 30 and 180 days FFV 028 SN – Self-neutralizing version of the mine, which disarms itself after 30 to 180 days, indicating its status by launching a red marking cylinder attached to a 0.5 meter long wire.
NASCAR logo. The National Association for Stock Car Auto Racing (NASCAR) makes and enforces numerous rules and regulations that transcend all racing series.. NASCAR issues a different rule book for each racing series; however, rule books are published exclusively for NASCAR members and are not made available to the public. [1]
A muzzle reference system (MRS) is a device used on most modern tank guns and some artillery systems that measures the bending of the barrel due to heat, gravity and other issues. It normally consists of a laser device and detector mounted at the breach end of the gun, often co-located with other optics like the gunner's sight, and a mirror at ...