High Fidelity Helicopter Lag Damper Model for Comprehensive Rotor Analysis

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$149,881.00
Award Year:
2011
Program:
STTR
Phase:
Phase I
Contract:
N68335-11-C-0422
Agency Tracking Number:
N11A-010-0329
Solicitation Year:
2011
Solicitation Topic Code:
N11A-T010
Solicitation Number:
2011.A
Small Business Information
Techno-Sciences, Inc.
11750 Beltsville Drive, 3rd Floor, Beltsville, MD, -
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
061997029
Principal Investigator:
Grum Ngatu
Principal Investigator
(240) 790-0708
grum@technosci.com
Business Contact:
Sandra Selha
Contracts Administrator
(240) 790-0620
selhas@technosci.com
Research Institution:
University of Maryland
Norman M Wereley
3181 Glenn L. Martin Hall
College Park, MD, 20742-
(301) 405-1927
Nonprofit college or university
Abstract
Rotors and their associated dynamic components operate in high-cycle and environmentally harsh conditions. Accurate rotor load predictions are crucial part of rotor analysis and design. Lag damping poses a challenge for rotor load analysis due to the difficulty of incorporating lag damper effects into comprehensive rotor analysis. The key challenge in effectively predicting the lead-lag motions and resulting rotor loads is the lack of a high fidelity lag damper model. A high fidelity lag damper model that can predict damping forces over the operational range of a helicopter will benefit future rotor designs.

* information listed above is at the time of submission.

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