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Active Balancing for Lift Fan Drive Shaft

Award Information

Agency:
Department of Defense
Branch:
Navy
Award ID:
65100
Program Year/Program:
2003 / SBIR
Agency Tracking Number:
N032-0738
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
FOSTER-MILLER TECHNOLOGIES, INC.
431 NEW KARNER ROAD ALBANY, NY 12205-0386
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2003
Title: Active Balancing for Lift Fan Drive Shaft
Agency / Branch: DOD / NAVY
Contract: N68335-04-C-0018
Award Amount: $70,000.00
 

Abstract:

The F-35 VSTOL configuration includes a lift fan driven by a long, slender hollow shaft that operates at high speeds. The shaft spins whenever the aircraft's engine runs, and transmits considerable horsepower when the lift fan is activated. In additionto being a key element in the aircraft's drive train, shaft maintenance will require engine removal. A device that observes and automatically adjusts imbalance in this shaft to eliminate its vibration would result in significant O&M savings. To addressthis need, an on-the-fly, self-adjusting balancing device is proposed that utilizes measured vibration to position shaft-mounted balancing disks to minimize shaft imbalance. This active balancing system will reduce or eliminate drive shaft vibrationscaused by rotational dynamics to preclude undue maintenance of shaft system components. Based on influence coefficient (IC) methods, feasibility of the rotating balance disk concept will be demonstrated in Phase I by experiment. A system will be designedto perform multiplane balancing on a spinning shaft by properly positioning shaft-mounted adjustable weights. A test rig will be built to demonstrate the system in a single balance plane, and initial on-board mechanical and electronic hardware capable ofwithstanding the centrifugal loads without contributing to imbalance will be implemented. Performance of a single-plane balance on the test rig will demonstrate feasibility of the proposed approach.

Principal Investigator:

Hsiang M. Chen
Senior Staff Specialist
5184569919
mchen@fosmiltech.com

Business Contact:

Douglas A. McCauley
General Manager
5184569919
dmccauley@fosmiltech.com
Small Business Information at Submission:

FOSTER-MILLER TECHNOLOGIES DIVOF FOSTER-
431 New Karner Road Albany, NY 12205

EIN/Tax ID: 042212281
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No