AERM 1240: PROP STUDY QUESTIONS AND ANSWERS

AERM 1240: PROP STUDY QUESTIONS AND ANSWERS

Five operational forces acting on prop are: - ANS-a. Centrifugal Force
b. Thrust bending Force
c. Torque bending Force
d. Aerodynamic Twisting Moments
e. Centrifugal Twisting Moment
Forces acting on a Propeller: - ANS-a. Tension
b. Torsion
c. Compression
d. Bending stresses
What is the purpose of the Propeller? - ANS-The propeller converts engine HP to useful thrust.
§45.13 Identification data. - ANS-(a) The identification required by §45.11 (a) through (c) must include
the following information:
(1) Builder's name.
(2) Model designation.
(3) Builder's serial number.
(4) Type certificate number, if any.
(5) Production certificate number, if any.
(6) For aircraft engines, the established rating.
FAR PART 43 - ANS-—MAINTENANCE, PREVENTIVE MAINTENANCE, REBUILDING, AND ALTERATION
Pitch Distribution - ANS-Twist in a propeller blade along its length
Blade Angle Angle - ANS--Btwn blade section chord line and the plane of rotation of the propeller
Two types of pitch: - ANS-1. Geometric Pitch
2. Effective Pitch
Pitch Slip: - ANS-Difference btwn Geometric pitch and Effective pitch
PART 23 - ANS-—AIRWORTHINESS STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER
CATEGORY AIRPLANES