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A slipper piston is a piston for a petrol engine that has been reduced in size and weight as much as possible. In the extreme case, they are reduced to the piston crown, support for the piston rings, and just enough of the piston skirt remaining to leave two lands so as to stop the piston rocking in the bore.
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Data from Jane's all the World's Aircraft 1959–60, British Civil Aircraft since 1919 - Volume 2 General characteristics Crew: 1 Capacity: 5 pax / 2 stretchers + 2 attendants / 1pax + 185 cu ft (5.2 m 3) of cargo / hopper for 1,550 lb (700 kg) chemicals Length: 29 ft 6 in (8.99 m) Wingspan: 43 ft 6 in (13.26 m) Height: 8 ft 9 in (2.67 m) Wing area: 227.6 sq ft (21.14 m 2) Aspect ratio: 8.31 ...
The piston is connected to the Scotch yoke through a slipper bearing (a type of hydrodynamic tilting-pad fluid bearing). Mechanical fuel injection. Ports rather than valves. Easy maintenance (top overhauling) with simple tools. The Scotch yoke does not create lateral forces on the piston, reducing friction and piston wear.
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In a two-stroke engine, the forces on the piston act uniformly downwards, throughout the cycle. In a four-stroke engine, these forces reverse cyclically: In the induction phase, the piston is forced upwards, against the reduced induction depression. The simple cam mechanism only works with a force in one direction.
The No.7 Britten V1000 at Barber Vintage Motorcycle Museum in Alabama, USA. The Britten V1000 is a handbuilt race motorcycle designed and built by John Britten and a group of friends in Christchurch, New Zealand, during the early 1990s.
Free-piston engine used as a gas generator to drive a turbine. A free-piston engine is a linear, 'crankless' internal combustion engine, in which the piston motion is not controlled by a crankshaft but determined by the interaction of forces from the combustion chamber gases, a rebound device (e.g., a piston in a closed cylinder) and a load device (e.g. a gas compressor or a linear alternator).