The Development of an Aviation Fuel Thermal Stability Test Unit

1995 ◽  
Vol 117 (3) ◽  
pp. 468-474 ◽  
Author(s):  
D. L. Daggett ◽  
A. Veninger ◽  
C. Lewis ◽  
S. Bullock ◽  
R. Kamin
Keyword(s):  
Thermal Stability ◽  
Preliminary Test ◽  
Aircraft Engine ◽  
Aviation Fuel ◽  
Engine Fuel ◽  
Test Results ◽  
Test Unit ◽  
Thermal Deposition ◽  
Unit Design ◽  
Engine Components

A test unit has been developed by Rolls-Royce for the U.S. Navy to use in evaluating fuel thermal deposition typically found in various aircraft engine components. Although the current Jet Fuel Thermal Oxidation Tester (JFTOT) provides a qualitative thermal stability evaluation, it may not be able to predict in-service problems. Conditioning and testing of the fuel under realistic conditions is crucial if one is to predict deposit formations accurately. Engine fuel deposit evaluations and evidence from unpublished Rolls-Royce laboratory rig tests were used to help design a test unit that would address fuel stability problems in current or future aircraft. The Aviation Fuel Thermal Stability (AFTS) test unit embodies test modules that were selected with extensive fuel systems experience to enable the evaluation of thermal deposition in various fuel components using properly conditioned fuel. The test modules are controlled and results are recorded by a computer. This paper includes a review of the AFTS test unit design and preliminary test results thereof.

scholarly journals The Development of an Aviation Fuel Thermal Stability Test Unit

1994 ◽  
Author(s):  
David L. Daggett ◽  
Al Veninger ◽  
Chris Lewis ◽  
Stuart Bullock ◽  
Rick Kamin
Keyword(s):  
Thermal Stability ◽  
Preliminary Test ◽  
Aircraft Engine ◽  
Aviation Fuel ◽  
Engine Fuel ◽  
Test Results ◽  
Test Unit ◽  
Thermal Deposition ◽  
Unit Design ◽  
Engine Components

A test unit has been developed by Rolls-Royce for the U.S. Navy to evaluate fuel thermal deposition typically found in various aircraft engine components. Although the current Jet Fuel Thermal Oxidation Tester (JFTOT) provides a qualitative thermal stability evaluation, it may not be able to predict in service problems. Conditioning and testing of the fuel under realistic conditions is crucial if one is to accurately predict deposit formations. Engine fuel deposit evaluations and evidence from unpublished Rolls-Royce laboratory rig tests were used to help design a test unit that would address fuel stability problems in current or future aircraft. The Aviation Fuel Thermal Stability (AFTS) test unit embodies test modules that were selected with extensive fuel systems experience to enable the evaluation of thermal deposition in various fuel components using properly conditioned fuel. The test modules are controlled and results are recorded by a computer. This paper includes a review of the AFTS test unit design and preliminary test results thereof.

scholarly journals High Temperature Thermal Stability of JP-8+100 and Other Fuels

1999 ◽  
Author(s):  
Kenneth E. Binns ◽  
Gordon L. Dieterle
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Aircraft Engine ◽  
Test System ◽  
Engine Fuel ◽  
Test Results ◽  
Low Oxygen ◽  
Operating Characteristics ◽  
Extended Duration ◽  
Thermal Stability Of

An engine trend toward maximum use of fuel as a heat sink has created interest in thermal stability information on aviation fuels for high temperature applications. Testing of the fuels has been conducted in the Extended Duration Thermal Stability Test System. This system was established for evaluating the thermal stability of JP-8+100 fuel. The specific fuels evaluated were JP-8, JP-8+100, JPTS and JP-7. The testing has been conducted at temperature and residence times that represent future aircraft/engine fuel systems. Special thermal stability tests with copper doped fuels and at low oxygen content have also been conducted. Carbon deposition information of these fuels that occur in bulk fuel and on hot surfaces is covered in this paper. The description of the test system and its operating characteristics and the test results are also included.

scholarly journals Organic Rankine cycle for turboprop engine application

2021 ◽  
pp. 1-21
Author(s):  
G.E. Pateropoulos ◽  
T.G. Efstathiadis ◽  
A.I. Kalfas
Keyword(s):  
Waste Heat ◽  
Organic Rankine Cycle ◽  
Weight Ratio ◽  
Rankine Cycle ◽  
Aircraft Engine ◽  
Working Fluid ◽  
Engine Fuel ◽  
Exhaust Gases ◽  
Waste Heat Recovery System ◽  
Turboprop Engine

ABSTRACT The potential to recover waste heat from the exhaust gases of a turboprop engine and produce useful work through an Organic Rankine Cycle (ORC) is investigated. A thermodynamic analysis of the engine’s Brayton cycle is derived to determine the heat source available for exploitation. The aim is to use the aircraft engine fuel as the working fluid of the organic Rankine cycle in order to reduce the extra weight of the waste heat recovery system and keep the thrust-to-weight ratio as high as possible. A surrogate fuel with thermophysical properties similar to aviation gas turbine fuel is used for the ORC simulation. The evaporator design as well as the weight minimisation and safety of the suggested application are the most crucial aspects determining the feasibility of the proposed concept. The results show that there is potential in the exhaust gases to produce up to 50kW of power, corresponding to a 10.1% improvement of the overall thermal efficiency of the engine.

Emission Reduction of Fuel Staged Aircraft Engine Combustor Using an Additional Premixed Fuel Nozzle

2012 ◽  
Author(s):  
Takeshi Yamamoto ◽  
Kazuo Shimodaira ◽  
Seiji Yoshida ◽  
Yoji Kurosawa
Keyword(s):  
Pressure Ratio ◽  
Aircraft Engine ◽  
Test Results ◽  
Drastic Reduction ◽  
Fuel Nozzle ◽  
Conducting Research ◽  
Japan Aerospace Exploration Agency ◽  
Co Emission ◽  
Fuel Burner ◽  
Additional Fuel

The Japan Aerospace Exploration Agency (JAXA) is conducting research and development on aircraft engine technologies to reduce environmental impact for the TechCLEAN project. As a part of the project, combustion technologies have been developed with an aggressive target that is an 80% reduction over the NOx threshold of the ICAO CAEP/4 standard. A staged fuel nozzle with a pilot mixer and a main mixer was developed and tested using a single-sector combustor under the target engine’s LTO cycle conditions with a rated output of 40 kN and an overall pressure ratio of 25.8. The test results showed a 77% reduction over the CAEP/4 NOx standard. A reduction in smoke was found under a higher thrust condition than the 30% MTO condition, and a reduction in CO emission was found under a lower thrust condition than the 85% MTO condition. In the present study, an additional fuel burner was designed and tested with the staged fuel nozzle in a single-sector combustor to control emissions. The test results show that the combustor enables an 82% reduction in NOx emissions relative to the ICAO CAEP/4 standard and a drastic reduction in smoke and CO emissions.

scholarly journals Carbon capture test unit design and development using amine-based solid sorbent

2016 ◽  
Vol 112 ◽  
pp. 251-262 ◽  
Author(s):  
Ronald W. Breault ◽  
James L. Spenik ◽  
Lawrence J. Shadle ◽  
James S. Hoffman ◽  
McMahan L. Gray ◽  
...  
Keyword(s):  
Carbon Capture ◽  
Test Unit ◽  
Solid Sorbent ◽  
Design And Development ◽  
Unit Design
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