FAA multi-engine airplane class-rating foundations flashcards
FAA multi-engine airplane class-rating foundations · Build recall with a focused review session.
23 cards. Read the term and the definition here. The deck at the top of this page is optional.
- Critical engine
- The engine whose failure has the most adverse defined effect on handling or performance under the stated conditions, requiring actual configuration and rotation references.
- Vmc
- A minimum-control-speed concept under its specified engine-out conditions, distinguished from stall speed or a guarantee of available climb performance.
- Asymmetric thrust
- An unequal propulsion condition producing moments dependent on thrust magnitude and geometry, combined with the actual drag and control forces.
- Blade angle
- The angle between a stated blade-section chord and the plane of rotation, distinguished from its aerodynamic angle relative to the local airflow.
- Effective pitch
- The actual forward advance per revolution at the stated operating condition, distinguished from the geometric screw-advance model of the blade.
- Slip
- The difference between geometric and effective advance per revolution in the defined comparison, requiring a stated denominator when expressed as a percentage.
- Blade station
- A specified measurement location relative to the propeller reference, used to make geometry and inspection results repeatable under the applicable data.
- Thrust power
- Useful propulsive output calculated from thrust multiplied by forward speed in a consistent model, distinguished from the engine shaft input power.
- On-speed condition
- A state where the actual rotational speed matches the selected governor setting within the system behavior, distinguished from a fixed universal blade angle.
- Overspeed condition
- Actual rotational speed above the selected or specified reference, whose correction and limits depend on the actual governor and installation.
- Speeder spring
- The governor element providing the selected reference force against the speed-sensitive mechanism, rather than a direct measurement of aircraft forward speed.
- Feathering
- Moving blades toward the defined low-drag alignment with axial airflow, using the actual control forces and angle references of the installation.
- Double-acting control
- A pitch-change arrangement using hydraulic action in both movement directions, distinguished from a single hydraulic direction opposed by other forces.
- Synchronization
- Matching propeller rotational speeds in the defined control arrangement, distinguished from independently establishing blade phase, track or structural condition.
- Synchrophasing
- Controlling a specified relative angular blade relationship in addition to speed, with permitted operation and authority determined by the actual system.
- Slip ring
- A rotating electrical contact surface used with the specified brush arrangement to transfer electrical power or signals across the rotating interface.
- Heating sequence
- The controller-defined order and timing of electrical element operation, assessed against the actual system rather than an assumed universal cycle.
- Slinger arrangement
- A rotating distribution method using centrifugal action to direct the specified fluid along the intended delivery paths rather than a generic fuel-supply function.
- Vyse
- Best rate-of-climb speed with one engine inoperative in the applicable aircraft condition, not a universal landing approach speed or proof of positive climb.
- Single-engine absolute ceiling
- The defined condition where single-engine rate of climb reaches zero, distinguished from a service-ceiling criterion and from required terrain clearance.
- Zero-thrust simulation
- A specified training power condition approximating a defined engine/propeller effect, requiring the actual aircraft or approved training data rather than a guessed setting.
- Verification
- The defined cross-check of a suspected condition before acting, distinguished from treating one mnemonic, sensation or unconfirmed indication as proof.
- Class rating
- The applicable aircraft-class qualification within the certificate framework, distinguished from a separate operator approval, currency or personal medical assessment.