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Rotary Live

Award Information

Department of Defense
Award ID:
Program Year/Program:
2003 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Mide Technology Corporation
200 Boston Avenue Suite 1000 Medford, MA -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2003
Title: Rotary Live
Agency / Branch: DOD / NAVY
Contract: N68335-03-C-0159
Award Amount: $70,000.00


A rotary amplified liquid proof-mass-damper is proposed. The proposed innovation is based on Bell Helicopter's LIVE, Liquid Inertial Vibration Isolator (LIVE). LIVE is currently installed on the Bell 427 helicopter. The proposed rotary version, thushave legacy and support of a rotary wing aircraft manufacturer. The low-weight, low-cost proposed damper will reduce drive-shaft deflections. In Phase I, Mid¿ will work with Bell Helicopter to ensure that the solution can be installed on legacy aircraft.Active modification of the isolation frequency will also be investigated to allow the solution to be used in non-constant speed shaft applications. This work will build on Bell Helicopter and Mid¿'s Dynamically Tuned Airframe Structures (DTAS) Program.This program was funded by the US Army.In Phase I, Mid¿ will develop and evaluate the effectiveness of the proposed damper to minimize drive-shaft deflections. In addition to the reduction in shaft deflection, Mid¿ will also consider weight, cost, minimal aircraft modifications forinstallation, and maintainability/repairability. Phase I will also assess the effectiveness of the design on both in-use shafting and supercritical shafting.In Phase II, Mid¿ will develop a prototype and evaluate broadest range of drive-shaft design applications to demonstrate the flexibility of the proposed system. Tests will be used to quantify the effectiveness of damping systems and to improve the damperdesign. Benefits:A low-cost, low-weight rotary damper will reduce maintenance costs, increase equipment availability, increase safety and reduce structural and human fatigue.Commercial Applications:There is a current and significant interest in the automotive and power transmission industry to reduce vibrations induced by rotary components.

Principal Investigator:

Marthinus C. van Schoor

Business Contact:

Petra Botha
Chief Financial Officer
Small Business Information at Submission:

200 Boston Avenue Suite 1000 Medford, MA 02155

EIN/Tax ID: 043066318
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No