A method of calculating the performance of controllable propellers with sample computations / by Edwin P. Hartman.

Format:

Book

Government document

Author/Creator:

Hartman, Edwin Phelps, 1905- author.

Contributor:

United States. National Advisory Committee for Aeronautics, issuing body.

Series:

Technical note (United States. National Advisory Committee for Aeronautics) ; 484.

Technical note / National Advisory Committee for Aeronautics ; No. 484

Language:

English

Subjects (All):

Propellers, Aerial--Performance.

Propellers, Aerial.

Mathematical analysis.

Physical Description:

1 online resource (24 pages, 14 unnumbered pages) : illustrations.

Place of Publication:

Washington, [D.C.] : National Advisory Committee for Aeronautics, 1934.

Summary:

This paper contains a series of calculations showing how the performance of controllable propellers may be derived from data on fixed-pitch propellers given in N.A.C.A. Technical Report No. 350, or from similar data.

Sample calculations are given which compare the performance of airplanes with fixed-pitch and with controllable propellers. The gain in performance with controllable propellers is shown to be largely due to the increased power available, rather than to an increase in efficiency. Controllably propellers are of particular advantage when used with geared and superchared engines.

A controllable propeller reduces the take-off run, increases the rate of climb and the ceiling, but does not increase the high speed, except when operating above the design altitude of the previously used fixed-pitch propeller or when that propeller was designed for other than high speed.

Notes:

Title from title screen (viewed March 18, 2020).

"January 1934."

"Langley Memorial Aeronautical Laboratory."

No Federal Depository Library Program (FDLP) item number.

Includes bibliographical references (page 17).

Electronic reproduction. Denton, Texas : University of North Texas, 2011. Electronic reproduction from print master produced by University of North Texas.

Other Format:

Print version: Hartman, Edwin P. A Method of calculating the performance of controllable propellers, with sample computations

Print version: Hartman, Edwin P. Method of calculating the performance of controllable propellers, with sample computations

OCLC:

1145759597