Composite Rotor Blade and Wing Structural Design Tool

Award Information
Agency: Department of Defense
Branch: Army
Contract: W911W6-09-C-0018
Agency Tracking Number: A082-022-1929
Amount: $119,860.00
Phase: Phase I
Program: SBIR
Awards Year: 2008
Solicitation Year: 2008
Solicitation Topic Code: A08-022
Solicitation Number: 2008.2
Small Business Information
1849 North Wabash Ave, Redlands, CA, 92374
DUNS: 059385711
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Peter Rohl
 IR&D Manager
 (900) 307-6218
Business Contact
 Delbert Andrus
Title: Contracts Manager
Phone: (909) 307-6218
Research Institution
Aeroelastic effects are significant design drivers in rotorcraft design. Typically, detailed structural information of the rotor blade necessary to determine its cross-sectional mass and stiffness properties is not available early on in the design process, especially for complex composite blades that are being employed in modern rotor systems. Therefore, high-fidelity aeroelastic analysis is usually not done until late in the rotorcraft design process, when changes to the design are difficult and costly to implement. Advatech Pacific proposes to address this shortcoming through the development of an integrated rotor blade design environment, where the blade cross sectional properties are calculated by the Variational Asymptotic Beam Sectional analysis code (VABS). This approach combines the comparatively low run times of a beam structural analysis desired for a preliminary-level design tool with the high fidelity rotor blade cross sectional information typically associated with a 3D finite element approach. Overall rotorcraft design and blade aeromechanical analysis is provided by the Rotorcraft Comprehensive Analysis System (RCAS). The original developer of VABS, Dr. Carlos Cesnik, is part of the Advatech Team, giving us a significant head start by bringing both his expertise and the latest version of the VABS code, UM/VABS, to the project. In addition, Mr. Robert Loftus, currently a Technical Fellow at the Boeing Company (formerly McDonnell Douglas Helicopters) and IPT Lead for the new composite main rotor blade design and development for the AH-64D Apache Attack Helicopter, will be providing practical blade design expertise. The proposed design environment will be flexible and modular, so that individual codes can be replaced without major software development effort, should that be desired in the future. The development will be incremental, with Phase I of the SBIR effort focusing on proving out the envisioned architecture.

* Information listed above is at the time of submission. *

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