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Flight tests of the lateral control characteristics of an F6F-3 airplane equipped with spring-tab ailerons

Author: Walter C Williams; Langley Aeronautical Laboratory.; United States. National Advisory Committee for Aeronautics.
Publisher: Langley Field, VA : Langley Memorial Aeronautical Laboratory, 1945.
Series: NACA collection.
Edition/Format:   Print book : National government publication : EnglishView all editions and formats
Summary:
Flight tests were made to determine the lateral control characteristics of an F6F-3 airplane equipped with spring-tab ailerons, which were developed by the Grumman Aircraft Engineering Corp. and have been made a production installation on F6F airplanes. The flight tests showed that the spring-tab ailerons had desirably light stick forces and no tendency to overbalance. Although the tabs were not mass-balanced, no  Read more...
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Additional Physical Format: Online version:
Williams, Walter C.
Flight tests of the lateral control characteristics of an F6F-3 airplane equipped with spring-tab ailerons.
Langley Field, VA : Langley Memorial Aeronautical Laboratory, 1945
(OCoLC)857368724
Material Type: Government publication, National government publication, Internet resource
Document Type: Book, Internet Resource
All Authors / Contributors: Walter C Williams; Langley Aeronautical Laboratory.; United States. National Advisory Committee for Aeronautics.
OCLC Number: 71066887
Notes: "Report no. L-149."
"Originally issued April 1945 as Advance Restricted Report L5C23."
"Report date October 1945."
"NACA WARTIME REPORTS are reprints of papers originally issued to provide rapid distribution of advance research results to an authorized group requiring them for the war effort. They were previously held under a security status but are now unclassified. Some of these reports were not technically edited. All have been reproduced without change in order to expedite general distribution."
Description: 6, [11] pages : illustrations ; 28 cm
Series Title: NACA collection.
Other Titles: NACA wartime reports
Responsibility: by Walter C. Williams.

Abstract:

Flight tests were made to determine the lateral control characteristics of an F6F-3 airplane equipped with spring-tab ailerons, which were developed by the Grumman Aircraft Engineering Corp. and have been made a production installation on F6F airplanes. The flight tests showed that the spring-tab ailerons had desirably light stick forces and no tendency to overbalance. Although the tabs were not mass-balanced, no flutter tendencies were indicated at speeds up to 400 miles per hour, and any oscillations following abrupt control deflections were heavily damped. The spring-tab ailerons gave 80 percent higher values of effectiveness with a 30-pound stick force at 400 miles per hour than the original ailerons on the F6F-3 airplane. At speeds lower than 275 miles per hour, the spring-tab ailerons were less effective than the original ailberons because of restricted aileron travel as a result of the use of large deflection to deflect the spring Recommendations are made for modifications that would increase the aileron effectiveness at low speeds without affecting the lateral control at high speeds. The modifications consist of increasing the available aileron deflection and modifying the spring-tab arrangement. Such an arrangement might, however, be more susceptible to flutter than the production installation.

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