Many early aircraft engines ( and a few in other applications ) had the crankshaft fixed to the airframe and instead the cylinders rotated, known as a rotary engine design.

Rotary engines such as the Wankel engine are referred to as pistonless rotary engines.

First introduced at AirVenture 2008, the Switchblade is to utilize a single Wankel rotary engine and ducted fan to keep the propeller out of harm's way on the ground.

The rotary engine, popular during World War I, quickly disappeared, having reached its peak as rotational forces prevented more fuel and air from being delivered to the cylinders, which limited horsepower.

As a result of GM's toying with the Wankel rotary engine, as used by Mazda of Japan, an export agreement was initiated in 1975.

Mazda then fitted these cars with the 13B rotary engine and three-speed automatic transmission.

The term internal combustion engine usually refers to an engine in which combustion is intermittent, such as the more familiar four-stroke and two-stroke piston engines, along with variants, such as the six-stroke piston engine and the Wankel rotary engine.

The Wankel engine ( rotary engine ) does not have piston strokes.

However by 1783 the more economical Watt steam engine had been fully developed into a double-acting rotative type, which meant that it could be used to directly drive the rotary machinery of a factory or mill.

Eventually he adapted his engine to produce rotary motion, greatly broadening its use beyond pumping water.

Beginning in the 1960s, Mazda put a major engineering effort into development of the Wankel rotary engine as a way of differentiating itself from other Japanese auto companies.

Mazda refocused its efforts and made the rotary engine a choice for the sporting motorist rather than a mainstream powerplant.

* Wankel engine ( an internal combustion engine with a rotary ' piston ')

* For a contrasting approach using no pistons, see the pistonless rotary engine.

* Rotary engine ( disambiguation ), other engines called " rotary "

The rotary engine was an early type of internal-combustion engine, usually designed with an odd number of cylinders per row in a radial configuration, in which the crankshaft remained stationary and the entire cylinder block rotated around it.

Another factor in the demise of the rotary was the fundamentally inefficient use of fuel and lubricating oil caused in part by the need for the fuel / air mixture to be aspirated through the hollow crankshaft and crankcase, as in a two-stroke engine.

This technique is referred to as vacuum distillation and it is commonly found in the laboratory in the form of the rotary evaporator.

* In rotary evaporation a vacuum distillation apparatus is used to remove bulk solvents from a sample.

Linear motion can come from either a diaphragm or piston actuator, while rotary motion is supplied by either a vane type air motor or piston air motor.

The euphonium is a valved instrument ; nearly all current models are piston valved, though rotary valved models do exist.

Moller International continues to develop the Skycar M400, which is powered by four pairs of in-tandem Wankel rotary engines, and is approaching the problems of satellite-navigation, incorporated in the proposed Small Aircraft Transportation System.

Cardano invented several mechanical devices including the combination lock, the gimbal consisting of three concentric rings allowing a supported compass or gyroscope to rotate freely, and the Cardan shaft with universal joints, which allows the transmission of rotary motion at various angles and is used in vehicles to this day.

There is no rail service in town but the Cape Cod Rail Trail rotary is located in North Harwich near Main Street.

The clay is formed into round pellets and fired in rotary kilns at.

A gas turbine is a rotary machine similar in principle to a steam turbine and it consists of three main components: a compressor, a combustion chamber, and a turbine.

A gas turbine is a rotary machine somewhat similar in principle to a steam turbine and it consists of three main components: a compressor, a combustion chamber, and a turbine.

It differs from an axis lock in that the cylindrical bearing is tensioned by a rotary spring rather than an axial spring.

Once prepared, the stencil is wrapped around the ink-filled drum of the rotary machine.

This reaction is driven by the proton flow, which forces the rotation of a part of the enzyme ; the ATP synthase is a rotary mechanical motor.

The activating mechanism is often reciprocating or rotary.

* Gear pumps-a simple type of rotary pump where the liquid is pushed between two gears.

This is the simplest of rotary positive displacement pumps.

Screw pumps are a more complicated type of rotary pumps, featuring two or three screws with opposing thread —- that is, one screw turns clockwise, and the other counterclockwise.

As with other forms of rotary pumps, the clearance between moving parts and the pump's casing is minimal.

The rotary dial is a device mounted on or in a telephone or switchboard that is designed to send electrical pulses, known as pulse dialing, corresponding to the number dialed.

A machine gun fitted with synchronization gear had the trigger normally disabled and the synchronizer mechanism would enable the trigger when the propeller was clear, essentially with the rotating parts of the engine ( the crankshaft and other parts connected to it with an inline engine, the crankcase with a rotary engine ) firing the gun.

Bulk can be reduced by substituting blade sheaves for the plate, but then the rotary FP shutter essentially becomes a regular bladed FP shutter.

A similar product, called Brainiac was introduced later ; it was essentially a reduced-cost version of the Geniac with provision for only three rotary switches.

The remaining secondary ( high voltage ) circuit stayed essentially the same, using an ignition coil and a rotary distributor.

1-1-1 is not available in the NANP, because 11 is the prefix used to access vertical service codes from rotary phones, and is essentially meaningless to the system otherwise.

There are essentially three categories of freeze-dryers: the manifold freeze-dryer, the rotary freeze-dryer and the tray style freeze-dryer.