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The first electric golf cart was custom-made in 1932, but did not gain widespread acceptance. [3] In the 1930s until the 1950s the most widespread use of golf carts was for those with disabilities who could not walk far. [4] By the mid-1950s the golf cart had gained wide acceptance with US golfers. [5]
The Soviet Project 183R class, more commonly known as the Komar class, its NATO reporting name, meaning "mosquito", is a class of missile boats, the first of its kind, built in the 1950s and 1960s.
D-Motor is a Belgian aircraft engine manufacturer based in Deerlijk. The company specializes in the design and manufacture of aircraft engines for homebuilt and ultralight aircraft. [1] [2] The company was formed in about 2009 to develop an engine to replace the Rotax 582 and Jabiru 2200 in the Belgian Masquito M80 helicopter project.
Club Car’s first product was a three-wheeled golf carts introduced in 1958. The company has continued making carts since. The company is regarded as an industry leader involved in many innovations, including producing one of the first street-legal golf carts. [7] It enjoyed newfound success with its DS line of golf cart beginning in 1980.
This direct-drive aero-engine is unusual in two respects: it is very oversquare with a bore:stroke ratio of 1.295:1, and it has a side-valve (flathead) valvetrain.The designer determined that since maximum continuous power output (65.3 kW [2]) was to be developed at only 2800 rpm, the extra weight and complexity of overhead valves (OHV) would be superfluous.
The switched reluctance motor (SRM) is a type of reluctance motor. Unlike brushed DC motors , power is delivered to windings in the stator (case) rather than the rotor . This simplifies mechanical design because power does not have to be delivered to the moving rotor, which eliminates the need for a commutator .
COMAC chose Collins Aerospace Pro Line 21 integrated avionics system (IAS) as their flight deck avionics solution, [41] [42] they also supplies the FMS-4200 flight management system (FMS) for the C909, which can also be seen on Mitsubishi CRJ550/700/900/1000 regional aircraft and the weather radar.
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.