Title

Thermal Stability of Hydrocarbon Fuels

Date

1964

Index Abstract

Not Available

Photo Quality

Not Needed

Report Number

APL TDR 64-89 Part 1

Creator

Bagnetto, Lucien

Quigg, Harold T.

Corporate Author

Phillips Petroleum Company

Laboratory

AF Aero Propulsion Laboratory

Date Issued

1964-08-21

Extent

174

Identifier

AD0606959

Access Rights

OTS

Distribution Classification

1

Contract

AF 33(657)-10639

DoD Project

3048

DoD Task

304801

DTIC Record Exists

No

Distribution Change Authority Correspondence

None

Distribution Conflict

No

Abstract

A 5-ml Bomb test method was modified to improve its ability to measure small differences in thermal stability quality of fuels. This test method is based upon the loss in UV light transmittance experienced when a 5-ml sample of the fuel is heated to a given temperature for twenty minutes. A threshold failure temperature for a given fuel is determined by heating the bomb over a range of temperatures to establish the level of heating required to produce an arbitrary loss of 25 units in light transmittance at 350 millimicrons wavelength. A significant relationship was found between threshold failure temperatures determined for eleven non-additive fuels using the 5-ml Bomb test method and the ASTM-CRC Coker, but not for seven additive-containing fuels. A good relationship was found between the 5-ml Bomb and MINEX heat exchanger test rig, using seven fuels, three of which contained additives. Several procedures were evaluated for accelerating the aging of fuels as possible test methods for predicting deterioration in thermal stability during storage. Procedures such as thermal stressing, ultraviolet irradiation, chemical initiation, and iron oxide catalysis, showed accelerated aging effects for a variety of fuels, as measured by deterioration in UV light transmittance.

Report Availability

Full text available

Provenance

Lockheed Martin Missiles & Fire Control

Type

report

Format

1 online resource