Zusammenfassung der Ressource
Aircraft Engines
- General Requirements
- Aircraft require thrust to produce enough speed for the wings to provide lift or enough thrust to
overcome the weight of the aircraft for vertical takeoff.
- Durability and Reliability
- Power and Weight
- Fuel Economy
- Operating Flexibility
- Compactness
- Powerplant Selection
- Types of Engine
- Inline Engines
- Opposed Engines
- V-Type Engines
- Radial Engines
- Reciprocating Engines
- Crankshafts
- Connecting Rods
- The connecting rod is the link that transmits
forces between the piston and the crankshaft.
- Pistons
- The piston of a reciprocating engine is a
cylindrical member which moves back and forth
within a steel cylinder.
- Piston Rings
- The piston rings prevent leakage of gas pressure from
the combustion chamber and reduce to a minimum
the seepage of oil into the combustion chamber.
- Cylinders
- The portion of the engine in which the power
is developed is called the cylinder.
- Firing Order
- The firing order of an engine is the
sequence in which the power event occurs
in the different cylinders.
- Valves
- Bearings
- A bearing is any surface which
supports, or is supported by,
another surface.
- Operating Cycles
- Four- Stroke Cycle
- Intake Stroke
- Compression Stroke
- Power Stroke
- Exhaust Stroke
- Two-Stroke Cycle
- Rotary Cycle
- Diesel Cycle
- Efficiencies
- Thermal Efficiency
- Mechanical Efficiency
- Volumetric Efficiency
- Propulsive Efficiency
- Gas Turbine Engines
- Consists of...
- 1. An air inlet, 2. Compressor section,
3. Combustion section, 4. Turbine
section, 5. Exhaust section, 6.
Accessory section, and 7. The systems
necessary for starting, lubrication,
fuel supply, and auxiliary purposes,
such as anti-icing, cooling, and
pressurization.
- Compressor Section
- Centrifugal-Flow Compressor
- Axial-Flow Compressor
- Turboprop Engines
- Turboshaft Engines
- Turbofan Engines