Title

Lubricity Properties Of High-Temperature Jet Fuels

Date

1967

Index Abstract

Coming Soon

Photo Quality

Complete

Report Number

AFAPL TR 66-89 Part 2

Creator

Appeldoorn, J. K.

Tao, F. F.

Corporate Author

Esso Research And Engineering Co Linden Nj Products Research Div

Laboratory

Air Force Aero Propulsion Laboratory

Extent

164

NTRL Accession Number

AD821576

Identifier

AD0821576

Access Rights

Export Controls

Distribution Classification

1

Contract

AF 33(615)-2828

DoD Project

3048

DoD Task

304805

DTIC Record Exists

Yes

Distribution Change Authority Correspondence

AFAPL LTR

Distribution Conflict

No

Abstract

The study of the lubricity of jet fuels has been expanded to examine several new variables: hydrocarbon type, dissolved oxygen, dissolved water, higher temperatures, and metallurgy. Several important interactions have been found among these variables. The compounds most responsible for good lubricity are heavy aromaticsw. Removal of these materials during refining is the major cause of poor lubricity fuels. The heavy aromatics by themselves show unusual friction and wear behavior, giving low wear in air and scuffing in dry, inert atmospheres. Dissolved oxygen and water increase wear and friction by a corrosiion process. Corrosive wear appears to be the most serious cause of friction and wear problems of jet fuels. Nitrogen blanketing can eliminate wear completely in vane pump tests. Certain additives are effective only when water and air are present. A literature survey has been made of the effect of oxygen and water on lubrication. A methematical model of corrosive wear has been constructed and shows good agreement with experimental data. Higher temperatures give more wear and friction especially in air. However, oxidation of the fuel will form polar compounds that act as lubricity agents. Thisw reaction tends to mask the effect of temperature. Certain lubricity additives become much less effective at higher temperatures. Metals that resist corrosive wear, such as stainless steel, are better than chrome steel at low loads, but scuff more easily at higher loads. Future work will concentrate on higher temperatures and different metallurgies and the interaction of these variables with atmosphere and additive action.

Report Availability

Full text available

Date Issued

1967-09

Publisher

Wright-Patterson Air Force Base, OH : Air Force Aero Propulsion Laboratory, Air Force Systems Command

Provenance

Lockheed Martin Missiles & Fire Control

Type

report

Format

1 online resource