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# geometric pitch

The distance a propeller would advance in one revolution if it were running in solid material. Geometric pitch is the built-in angle of incidence at which the propeller blade is attached to the hub.
The difference between the geometric pitch and the effective pitch is the angle of attack.

Aviation dictionary. 2014.

### Look at other dictionaries:

• mean geometric pitch — The average or mean of the geometric pitches of all elements from the root of the blade to its tip …   Aviation dictionary

• pitch ratio — The ratio of the geometric pitch or another specified pitch of a propeller to the diameter of the propeller. It is expressed as a mathematical proportion, as in 1.4 to 1 …   Aviation dictionary

• Geometric — Ge o*met ric, Geometrical Ge o*met ric*al, a. [L. geometricus; Gr. ?: cf. F. g[ e]om[ e]trique.] 1. Pertaining to, or according to the rules or principles of, geometry; determined by geometry; as, a geometrical solution of a problem. [1913… …   The Collaborative International Dictionary of English

• Geometric lathe — Geometric Ge o*met ric, Geometrical Ge o*met ric*al, a. [L. geometricus; Gr. ?: cf. F. g[ e]om[ e]trique.] 1. Pertaining to, or according to the rules or principles of, geometry; determined by geometry; as, a geometrical solution of a problem.… …   The Collaborative International Dictionary of English

• Geometric pen — Geometric Ge o*met ric, Geometrical Ge o*met ric*al, a. [L. geometricus; Gr. ?: cf. F. g[ e]om[ e]trique.] 1. Pertaining to, or according to the rules or principles of, geometry; determined by geometry; as, a geometrical solution of a problem.… …   The Collaborative International Dictionary of English

• Geometric spider — Geometric Ge o*met ric, Geometrical Ge o*met ric*al, a. [L. geometricus; Gr. ?: cf. F. g[ e]om[ e]trique.] 1. Pertaining to, or according to the rules or principles of, geometry; determined by geometry; as, a geometrical solution of a problem.… …   The Collaborative International Dictionary of English

• Geometric square — Geometric Ge o*met ric, Geometrical Ge o*met ric*al, a. [L. geometricus; Gr. ?: cf. F. g[ e]om[ e]trique.] 1. Pertaining to, or according to the rules or principles of, geometry; determined by geometry; as, a geometrical solution of a problem.… …   The Collaborative International Dictionary of English

• effective pitch — The actual distance a propeller moves forward through the air in one revolution. It is the difference between the geometric pitch of a propeller and the propeller slip. Also called a practical pitch. The difference between the geometric pitch and …   Aviation dictionary

• effective pitch ratio — Basic propeller characteristics represented by the formula V/nd, where V is air speed, n is propeller RPM, and d is diameter. Pitch ratio is the ratio of the geometric pitch, or other specified pitch, of a propeller to the diameter of the… …   Aviation dictionary

• standard pitch — A geometric pitch of a propeller measured at two thirds of the propeller’s radius and expressed either as a percentage or as a fraction. Also called a nominal pitch …   Aviation dictionary

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