Preliminary stability and control tests in the NACA free-flight wind tunnel and correlation with full-scale flight tests / by Joseph A. Shortal and Clatyon J. Osterhout.

Format:

Book

Government document

Author/Creator:

Shortal, Joseph Adams, 1908- author.

Osterhout, Clayton J., author.

Contributor:

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

Series:

Technical note (United States. National Advisory Committee for Aeronautics) ; 810.

Technical note / National Advisory Committee for Aeronautics ; no. 810

Language:

English

Subjects (All):

Airplanes--Control.

Airplanes.

Stability of airplanes.

Wind tunnel testing.

Physical Description:

1 online resource (19 pages, 10 unnumbered pages) : illustrations.

Place of Publication:

Washington, [D.C.] : National Advisory Committee for Aeronautics, 1941.

Summary:

The study of stability and control of airplanes by means of dynamic scale models in the NACA 12-foot free-flight wind tunnel is described. Preliminary tests of a 1/12-scale model of the P-36A airplane were used to develop the testing technique and to afford a comparison of tests of a model in the tunnel with flight tests of the corresponding airplane. Qualitatively, the general behavior of the model was in agreement with the behavior of the airplane, but quantitatively, the longitudinal stability of the model was greater than that of the airplane and the aileron control was somewhat weaker. This quantitative disagreement is probably a result of local separation due to the low Reynolds numbers the tests, which affects a direct comparison with full-scale tests but which should not vitiate comparisons of different models or modifications to a given model. it is believed that the free-flight tunnel affords a useful means of determining the relative stability and control characteristics of different models and that it will be particularly useful in the development of new airplane design.

Notes:

Description based on online resource, PDF version; title from title page (TRAIL, viewed March 10, 2022).

"June 1941."

"Langley Memorial Aeronautical Laboratory."

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: Shortal, Joseph Adams, 1908- Preliminary stability and control tests in the NACA free-flight wind tunnel and correlation with full-scale flight tests.

OCLC:

1158388806