FAA Reciprocating Powerplant Practice Test

Question: 1 / 400

What is a key characteristic of dyna-focal engine mounts in aircraft reciprocating engines?

Eliminates torsional flexing of the powerplant.

Engine attaches at its center of gravity.

The key characteristic of dyna-focal engine mounts is that the engine attaches at its center of gravity. This design minimizes the vibrations transmitted to the airframe by positioning the engine in a way that utilizes balanced forces. By engaging the engine at its center of gravity, the mounts help reduce the potential for excessive shaking or movement when the engine is in operation, leading to a smoother performance and better handling characteristics for the aircraft.

The focus on minimizing vibration is crucial for enhancing the longevity of the engine and the integrity of the airframe while improving pilot comfort and ensuring the safety of operation. Proper alignment and positioning of the engine through dyna-focal mounts also assist in maintaining stability during flight operations, making them an essential feature in the design of modern aircraft powerplants.

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Shock mounts are adjustable for weight distribution.

Shock mounts point away from the engine's center of gravity.

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