Nacelles

(17 companies)
Nacelles are aerodynamically-shaped housings that hold engines, fuel, or equipment as an appendage on an aircraft. The turbine on a horizontal axis wind turbine (HAWT) uses a nacelle to protect sensitive turbine components.
Auxiliary power units (APU) provide supplemental power for a variety of purposes such as main engine starting, cabin climate control, engine block heating, and battery charging for seacraft, aircraft, and roadway vehicles.
Ground power units (GPU) are power systems that supply DC and AC power to an aircraft while it is not in use. GPUs are used for engine ignition, auxiliary power unit initiation, and other electrical systems.

Spark Plugs

(16 companies)
Spark plugs are used in engine cylinders to ignite the fuel in an internal combustion engine while withstanding high pressures and temperatures.
Unmanned aerial vehicles (UAVs), commonly referred to as drones, are aircraft that are operated remotely or autonomously, without a human pilot on board.
Flight management systems are multipurpose avionic computer systems that display navigational information and manage flight plans. They receive data from various sensors to interpret the position, heading, and speed of an aircraft and provide information regarding the aircraft's flight plan, destination, and logistics.

Carburetors

(29 companies)
Carburetors are devices used to proportionally mix a fuel with air for a combustion process. A carburetor is a mechanical device that forms part of the ancillary superstructure of an internal combustion engine. The specific function...
Deicing and anti-icing equipment removes and prevents the buildup of snow, ice, or frost on the frames of aircraft by chemical, thermal, pneumatic, or electromechanical means.
Wind tunnel testing services provide test facilities and technical staff for aerodynamic testing. Tests may be performed on prototype aircraft, helicopters, trains, cars, or buildings; or for research and development (R &D) purposes.
Fan blades and propellers are used to convey power from a source (such as a jet engine) for propulsion or the movement of air. Propellers are an array of fan blades that transmit power by converting rotational motion into thrust. They are sometimes referred to as props.

Electrical Power Generators

(1,051 companies)
Electrical power generators, also known as alternators, transform mechanical energy into electrical energy. They can be used for backup or emergency power or as an alternator on board a vehicle. Generators can produce either AC or DC power and are typically powered by a fuel engine.

Aerostructures

(48 companies)
Aerostructures include the constituent modules of an aircraft's airframe such as the fuselage, wings, empennage, flight control surfaces, nacelles, and pylons.

Fuel Injectors

(13 companies)
Fuel injectors dispense a fuel mist into an engine and can be controlled to deliver precise amounts of fuel at specified time intervals.

Navigation Lights

(31 companies)
Navigation lights are colored illumination devices used on aircraft, watercraft, and spacecraft. They are used to alert other crafts or vessels of the signaling craft's position, status, and/or heading.

Flywheels

(29 companies)
Flywheels have a high mass and are connected to a rotating shaft that smoothes the delivery of torque, or turning power, from a motor or engine. The inertia of flywheels allows them to absorb and release energy with little change in speed.