Aviation Mechanic - General, Airframe, and Powerplant › I. General › Task H. Mathematics

AM.I.H.S7

Skill

Compute compression ratio.

Study note

Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

From the FAA library

Aviation Maintenance Technician Handbook - Powerplant p. G-12
Glossary
management computer. FADEC schedules the fuel to the nozzles in such a way that prevents overshooting power changes and over-temperature conditions. FADEC furnishes information to the EICAS (engine indication and crew alerting system). Fan pressure ratio. The ratio ... amount of horsepower used to turn the crankshaft, pistons, gears, and accessories in a reciprocating engine and to compress the air inside the cylinders. Fiber optics. The technique of transmitting light or images through long, thin, flexible fibers of plastic…
Aviation Maintenance Technician Handbook - Powerplant p. 1-31
Chapter 1: Aircraft Engines › Reciprocating Engine Power & Efficiencies › Brake Horsepower
torque is known, the work done per revolution of the propeller shaft can be computed without difficulty by the equation: Figure 1-39. Compression ratio. If work per revolution is multiplied by the rpm, the result is work per minute…
Aviation Maintenance Technician Handbook - General p. G-3
Chapter 14: Human Factors › Glossary
limitations. Compression ratio. The ratio of the volume of a cylinder with the piston at the bottom of its stroke to the volume of the cylinder with the piston at the top of its stroke. Computer aided design (CAD). Using…