A rotary engineâs housing is a simple epitrochiod of two circles. The rotor spins eccentrically inside the housing, thus changing the volume of three spaces (chambers) formed between the two. Rotary engines share the same four-stroke sequence of piston engines: intake, compression, power, and exhaust.
Fibre-reinforced plastic. Fibre-reinforced plastic (FRP) (also called fibre-reinforced polymer, or fiber-reinforced plastic) is a composite material made of a polymer matrix reinforced with fibres. The fibres are usually glass, carbon, aramid, or basalt. Rarely, other fibres such as paper, wood, or asbestos have been used.
Like straw, the fiber provides the structure and strength to the composite, while a plastic polymer holds the fiber together. Common types of fibers used in FRP composites include: Fiberglass. Carbon Fiber. Aramid Fiber. Boron Fiber. Basalt Fiber. Natural Fiber (Wood, Flax, Hemp, etc.)