To increase an engine’s horsepower, manufacturers have developed forced induction systems called supercharger and turbosupercharger systems. They both compress the intake air to increase its density. The key difference lies in the power supply. A supercharger relies on an engine-driven air pump or compressor, while a turbocharger gets its power from the exhaust stream that … Read more
In a fuel injection system, the fuel is injected directly into the cylinders, or just ahead of the intake valve. The air intake for the fuel injection system is similar to that used in a carburetor system, with an alternate air source located within the engine cowling. This source is used if the external air … Read more
Induction Systems The induction system brings in air from the outside, mixes it with fuel, and delivers the fuel-air mixture to the cylinder where combustion occurs. Outside air enters the induction system through an intake port on the front of the engine cowling. This port normally contains an air filter that inhibits the entry of … Read more
The propeller is a rotating airfoil, subject to induced drag, stalls, and other aerodynamic principles that apply to any airfoil. It provides the necessary thrust to pull, or in some cases push, the aircraft through the air. The engine power is used to rotate the propeller, which in turn generates thrust very similar to the … Read more
An aircraft engine, or powerplant, produces thrust to propel an aircraft. Reciprocating engines and turboprop engines work in combination with a propeller to produce thrust. Turbojet and turbofan engines produce thrust by increasing the velocity of air flowing through the engine. All of these powerplants also drive the various systems that support the operation of … Read more
Autopilot systems help pilots control aircraft attitude, heading, altitude, and navigation during flight. Understanding how autopilot systems operate improves workload management, situational awareness, and flight safety. An autopilot is an automatic flight control system that maintains an aircraft in level flight or on a selected course. It may be controlled directly by the pilot or … Read more
Load factor is a critical concept in aviation that describes the forces acting on an aircraft during maneuvers. Understanding how load factor affects performance, stall speed, and structural limits is essential for safe flight operations. In aerodynamics, the maximum load factor (at a given bank angle) is a proportion between lift and weight and has … Read more
Angle of attack (AOA) indicators provide pilots with real-time information about wing performance and stall margin. Understanding how these systems work can significantly improve flight safety and help prevent loss of control accidents. The FAA along with the General Aviation Joint Steering Committee (GAJSC) is promoting AOA indicators as one of the many safety initiatives … Read more
Wing planform refers to the shape of a wing as viewed from above and plays a major role in aircraft performance. Understanding factors such as aspect ratio, taper, and sweepback helps explain how wing design influences lift, drag, and flight characteristics. Understanding the effects of different wing planforms is important when learning about wing performance … Read more
Wingtip vortices are rotating air currents formed at the tips of a wing as lift is produced. These vortices are a direct result of pressure differences above and below the airfoil and are closely associated with induced drag. Understanding how wingtip vortices form, how they affect aircraft performance, and how they create wake turbulence is … Read more