Modeling & Simulation for Optimization of Heavy-Fuel Micro Rotary Engines

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-08-M-2910
Agency Tracking Number: O081-UM6-1065
Amount: $99,191.00
Phase: Phase I
Program: SBIR
Awards Year: 2008
Solicitation Year: 2008
Solicitation Topic Code: OSD08-UM6
Solicitation Number: 2008.1
Small Business Information
9731 Center Street, Glenwood, NY, 14069
DUNS: 944681501
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Lawrence Krzeminski
 (716) 941-9202
Business Contact
 Lawrence Krzeminski
Title: President
Phone: (716) 941-9202
Research Institution
This program will conduct analytical studies to demonstrate how to convert the AR-741, rotary engine, to run on heavy fuel. Specifically, CFD modeling will be used to show how direct injection/stratified charge can be employed to convert this engine to heavy fuel. The direct injection will avoid predetonation, while the stratified charge or layering of the fuel air mixture will be investigated for a "lean burn" characteristic to achieve the best fuel economy. Further, the spray pattern will show a rich fuel mixture at the point of ignition for sufficient starting ease. The effects of turbocharging will also be modeled to achieve the desired SFC of 0.35. Thermodynamic cycle analysis will be used as a first order attempt to show the benefits of turbocharging and increased compression ratio on SFC. Computational Fluid Dynamics (CFD) will be used for the combustion design; showing the optimum location for the fuel injectors/igniters, spray pattern, mixing, and the corresponding combustion process. CFD will be used to determine optimal rotor pocket geometery and the investigation of the benefits for "split" combustion chamber operation. Lastly, we believe that in order to achieve the desires SFC of 0.35 lbs/HP-hr turbocharging will be a neccessity.

* Information listed above is at the time of submission. *

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