High Fidelity Helicopter Lag Damper Model for Comprehensive Rotor Analysis

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-11-C-0422
Agency Tracking Number: N11A-010-0329
Amount: $149,881.00
Phase: Phase I
Program: STTR
Awards Year: 2011
Solicitation Year: 2011
Solicitation Topic Code: N11A-T010
Solicitation Number: 2011.A
Small Business Information
11750 Beltsville Drive, 3rd Floor, Beltsville, MD, -
DUNS: 061997029
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Grum Ngatu
 Principal Investigator
 (240) 790-0708
Business Contact
 Sandra Selha
Title: Contracts Administrator
Phone: (240) 790-0620
Email: 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
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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