Absolute coefficients and the graphical representation of aerofoil characteristics / by Max Munk.

Format:

Book

Government document

Author/Creator:

Munk, Max M. (Max Michael), 1890- author.

Contributor:

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

Series:

Technical note (United States. National Advisory Committee for Aeronautics) ; 58.

Technical notes / National Advisory Committee for Aeronautics ; No. 58

Language:

English

Subjects (All):

Aerofoils.

Aerofoils--Mathematical models.

Lift (Aerodynamics).

Drag (Aerodynamics).

Physical Description:

1 online resource (11 pages, 1 unnumbered page) : illustration.

Place of Publication:

[Washington, D.C.] : National Advisory Committee for Aeronautics, 1921.

Summary:

It is customary to examine the aerodynamic qualities of an aerofoil by considering the coefficients of the forces, rather than actual forces, corresponding to any particular set of conditions. Such a coefficient, being always nondimensional (absolute), is the ratio of the actual force to some standard force corresponding to the given area, relative velocity, and air density. It is only by the use of such coefficients that the designer is able to judge the qualities of a profile and to compare, on the same basis, one profile with another. The reports of tests whether on models or in free-flight usually include both the observed forces and the calculated coefficients, although it is not common to find in published reports only the coefficients. The angles of attack are always given to make these data complete.

On the whole it appears that the use of natural absolute coefficients in a polar diagram is the logical method for presentation of aerofoil characteristics. Serious consideration should be given to the advisability of adopting this method in all countries. The actual adoption would be a great advancement of uniformity and accuracy in the science of aeronautics.

Notes:

Title from title screen (viewed July 1, 2019).

"June, 1921."

No Federal Depository Library Program (FDLP) item number.

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

Other Format:

Print version: Munk, Max M. Absolute coefficients and the graphical representation of aerofoil characteristics

OCLC:

1107323698