Evaluation of carburized and ground face gears / David G. Lewicki [and others].

Format:

Book

Government document

Contributor:

Lewicki, David G.

NASA Glenn Research Center

U.S. Army Research Laboratory

American Helicopter Society. National Forum 1999 : Montréal, Québec)

Series:

NASA technical memorandum ; 1999-209188.

ARL-TR (Aberdeen Proving Ground, Md.) ; 1998.

NASA/TM ; 1999-209188

ARL-TR ; 1998

Language:

English

Subjects (All):

Gearing.

gears.

Physical Description:

1 online resource (9 pages) : illustrations.

Place of Publication:

[Cleveland, Ohio] : National Aeronautics and Space Administration, Glenn Research Center, [1999]

Summary:

Experimental durability tests were performed on carburized and ground AISI 9310 steel face gears. The tests were in support of a Defense Advanced Research Projects Agency (DARPA) Technology Reinvestment Program (TRP) to enhance face-gear technology. The tests were conducted in the NASA Glenn spiral-bevel-gear/face-gear test facility. Tests were run at 2300 rpm face gear speed and at loads of 64, 76, 88, 100, and 112-percent of the design torque of 377 N-m (3340 in-lb). The carburized and ground face gears demonstrated the required durability when run for ten-million cycles at each of the applied loads. Proper installation was critical for the successful operation of the spur pinions and face gears. A large amount of backlash produced tooth contact patterns that approached the inner-diameter edge of the face-gear tooth. Low backlash produced tooth contact patterns that approached the outer-diameter edge of the face-gear tooth. Measured backlashes in the range of 0.178 to 0.254 mm (0.007 to 0.010 in) produced acceptable tooth contact patterns.

Notes:

Title from title screen (viewed on Apr. 30, 2012).

"May 1999."

"Prepared for the 55th Annual Forum sponsored by the American Helicopter Society Montreal, Quebec, Canada, May 25-27, 1999."

Prepared in collaboration with the Boeing Co., Mesa, AZ.

Includes bibliographical references (pages 8-9).

Other Format:

Print version: Evaluation of carburized and ground face gears

Microfiche: Evaluation of carburized and ground face gears

OCLC:

227902667

Access Restriction:

APPROVED FOR PUBLIC RELEASE.