"First Full Throttle Endurance Test of Liberty Engine, Equipped with Various Experimental Materials" (Air Service Information Circular Vol. VI, No. 523), 1925-03-24, 1925-09-01

Item — Box: MC-019-001, Folder: 001.A.019

Identifier: 20200081

Staff Only

Scope and Contents

Document Type: Technical Research Report Authority: Government Military (authoritative reference) Document Number: Air Service Information Circular (Aviation) Vol. VI, No. 523 (dated September 1, 1925), based on McCook Field Report Serial No. 2490 (dated March 24, 1925).

Scope: Power Plant Section Report prepared by Svend A. Christiansen, Engineering Division, Air Service, McCook Field, Dayton, Ohio.

Contents: "OBJECT OF TEST The object of this test was to determine the reliability and durability under full throttle conditions, of a Liberty "12" aviation engine, fitted with various special materials and accessories.

CONCLUSIONS Sprayed Babbitt bearings, Agrilite bearings, Kelmet bearings, sprayed valves, sprayed pistons and camshaft housing vents did not complete the test successfully and cannot be recommended. The Genelite bushing, the Durex bushing, stub-tooth gears, reinforced cylinders, solid fuel connections, water pump, Stryker cleaner and jump-gap distributor head completed the test successfully and should be tested further."

Dates

Creation: 1925-03-24
Publication: 1925-09-01

Creator

Christiansen, Svend A. (Author, Person)
United States. Army. Air Service (1917-1926) (Publisher, Organization)
United States. Army. Air Service. Engineering Division (Editor of compilation, Organization)

Conditions Governing Access

This collection is open for research in the Archives & Special Collections reading room. Handling guidelines and use restrictions will be communicated and enforced by archives staff members.

Extent

1 Issue (All of ID #s 20200070 thru 20200081 and 20200100 thru 20200102 is a single bound voume, hence in the same folder.)

Language of Materials

English

Additional Description

Folder Contents

ID #s 20200070 thru 20200081 and 20200100 thru 20200102 are a single bound voume, hence in the same folder.

Digital Scan Location

spc-aehs-000185

Format & Physical Description

Format: loose-leaf booklet, 8.5”x11” (276 pages total, not including covers; 36 pages in this issue with the last two pages blank). Brown, marbled press-board covers. Perfect bound after publishing. Includes black & white charts, photographs, graphs and drawings.

Publication Data

Publication Data: "Published by the Chief of the Air Service, Washington, D.C." Printed in 1925 by the Government Printing Office, Washington, D.C. In upper left: "File: D 52.41 / Liberty / 280".

Note 1: Circa late 1920s, this ASIC was bound in a single press-board volume with fourteen other ASICs by the Estonian Aviation Academy (Lennukool Raamatu-Kogu K).

Note 2: Available on-line at the Aircraft Engine Historical Society web-site [http://www.enginehistory.org] with locator #013.006.523.