Design Optimization and Analysis of Advanced Exhaust Systems

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-14-C-0342
Agency Tracking Number: N14A-005-0012
Amount: $79,998.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: N14A-T005
Solicitation Number: 2014.A
Timeline
Solicitation Year: 2014
Award Year: 2014
Award Start Date (Proposal Award Date): 2014-09-09
Award End Date (Contract End Date): 2015-04-09
Small Business Information
6210 Kellers Church Road, Pipersville, PA, -
DUNS: 929950012
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Neeraj Sinha
 Vice President&Technica
 (215) 766-1520
 sinha@craft-tech.com
Business Contact
 Brian York
Title: Treasurer and Principal S
Phone: (215) 766-1520
Email: york@craft-tech.com
Research Institution
 The Pennsylvania State University
 Stephen A Hambric
 P.O. Box 30
State College, PA, 16804-16804
 (814) 863-3030
 Nonprofit college or university
Abstract
Historically, aircraft engines have featured relatively simple axisymmetric exhaust shapes with several moving parts; however, future engine exhaust systems are expected feature compact, sinuous ducts with complex non-axisymmetric shapes, fixed exit areas, thrust vectoring etc., constructed with a minimum number of moving parts. Their exhaust plumes are currently not well understood; however, LES analysis of the exhaust system interior aerodynamics and the plume appears promising. Attention must also be directed towards the structural analysis. The current practice in the aerospace industry is to conduct uncoupled aerodynamic and structural analyses, which is a cumbersome, time consuming and expensive. It results less than optimal final exhaust configurations under tight time and budget constraints. This provides a strong motivation for creating a multi-disciplinary exhaust system optimization environment within which LES modeling of the exhaust flowfield is coupled to structural analyses of the components forming the exhaust system with the objective of minimizing structural component weight and maximizing system performance. Such tools are requisite for supporting the development of next-generation engines and optimizing their designs with regards to maximum system performance, as well as durability from the improved understanding of the structural loads on the exhaust nozzle and duct components leading to weight reduction.

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

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