USA flag logo/image

An Official Website of the United States Government

Dual Mode Electrical Accumulator Unit (DMEAU)

Award Information

Department of Defense
Air Force
Award ID:
Program Year/Program:
2011 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
4401 DAYTON XENIA RD DAYTON, OH 45432-1805
View profile »
Woman-Owned: Yes
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2011
Title: Dual Mode Electrical Accumulator Unit (DMEAU)
Agency / Branch: DOD / USAF
Contract: FA8650-11-C-2182
Award Amount: $999,994.00


ABSTRACT: Electrical motors are rapidly replacing hydraulic motors in flight actuators for aircraft applications. In hydraulic systems, accumulators are used to store regenerative energy from the actuators as well as to supply peak energy demands of these actuators in response to flight control system demands. No electrical analog (Electrical Accumulator Unit) exists in production, although some prototype hardware has been demonstrated to store/supply transient electric energy (~100 Kwatt spikes). Advanced EAU designs merge the emergency power function (battery energy storage) with the transient electrical energy function. Military aircraft use Inverter Converter Control (ICC) units to interface with electrical machines for engine starting and 270 VDC power generation. A recently completed SBIR Phase I study shows how an advanced EAU converter can be merged with the ICC, both electrically and physically. Working with the battery, the resultant Dual Mode EAU (DMEAU) would have the following functions: emergency power, transient energy supply/storage, battery charging, engine starting and 270 VDC power generation. The DMEAU would fit into the current space of the ICC and utilized the current ICC cooling. For this proposal, an advanced EAU breadboard converter will be fabricated and tested to expected aircraft actuator transient loads with an emulated energy storage battery. BENEFIT: Fabrication of an advanced breadboard EAU converter will clearly show the viability of combining functions which are now housed in the separate EAU and ICC Units. The combined outcomes of weight savings and increased vehicle capability will spur the application of Dual Mode Electrical Accumulator Units to several thousand high performance aircraft.

Principal Investigator:

Hiroyuki Kosai
Senior Physicist
(937) 426-6900

Business Contact:

Rick Weddle
Director, Contracts
(937) 426-6900
Small Business Information at Submission:

UES, Inc.
4401 Dayton-Xenia Road Dayton, OH -

EIN/Tax ID: 310797776
Number of Employees:
Woman-Owned: Yes
Minority-Owned: No
HUBZone-Owned: No