Application of Switching Valves to Improve Reliability of Fueldraulic Systems

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-13-C-0277
Agency Tracking Number: N121-029-0915
Amount: $774,990.00
Phase: Phase II
Program: SBIR
Awards Year: 2013
Solicitation Year: 2012
Solicitation Topic Code: N121-029
Solicitation Number: 2012.1
Small Business Information
8000 Madison Blvd STE D-102/303, Madison, AL, 35758-2035
DUNS: 000000000
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Maciej Pindera
 Staff Scientist/Managing
 (256) 468-6458
Business Contact
 Maciej Pindera
Title: Staff Scientist/Managing
Phone: (256) 468-6458
Research Institution
DynSan will collaborate with the Purdue University to develop and test an innovative, fast digital hydraulic valve design that is insensitive to working fluid contamination. The goal is to improve the reliability of fueldraulic systems on aircraft gas turbine engines and similar applications. Current fueldraulic systems use flapper-type Electro Hydraulic Servo Valves (EHSV) to control actuator position. We propose to develop a new generation of digital EHSVs that does not suffer from the common problems experienced by the flapper-type designs such as stiction, null bias shift, and flapper damage. The new design uses an ensemble of appropriately controlled simple switching valves to digitally control an actuator. Phase I simulation and benchtop experiment results show that the new design exhibits excellent response characteristics in comparison to flapper-type EHSVs, and is insensitive to contamination. Phase II will develop a working hardware prototype and will have four focus areas: 1) updating of theoretical design tools developed in Phase I; 2) virtual prototyping, optimization and packaging of new design; 3) manufacturing and testing of a valve prototype; and 4) comparing the performance of the new digital approach to that of the currently used flapper-type valve design. Follow-on research will test the new valve on a wet rig simulator at Navy facilities. Phase III commercialization will seek to exploit the natural multi-use applicability of the developed system.

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

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