Combined Analytical and Experimental Approaches to Rotor and Dynamic Component Stress Predictions

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$79,866.00
Award Year:
2008
Program:
SBIR
Phase:
Phase I
Contract:
N68335-08-C-0160
Award Id:
87467
Agency Tracking Number:
N081-021-0561
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
7600 Leesburg Pike, West Building, Suite 204, Falls Church, VA, 22043
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
010983174
Principal Investigator:
ChanceMcColl
Director of Engin. - Marietta
(770) 516-7750
cmccoll@tda-i.com
Business Contact:
ScottBradfield
President
(703) 237-1300
sbradfield@tda-i.com
Research Institute:
n/a
Abstract
The objective of this proposal is to combine analytical modeling and experimental data to dramatically improve the accuracy of predictions for individual blade loads and stresses in dynamic components. The overall proposed approach can be summarized as follows: 1) a number of strain measurements are made on rotorcraft blades during flight; 2) these measurements are used to identify the aerodynamic loads applied to the blade (or identification of strains at critical locations, directly) using simplified models of the blade dynamic behavior, such as reduced order models; 3) the identified airloads (or strains) are used to predict stresses at critical locations in the blade and dynamic components using a comprehensive structural dynamic model of the rotor; and 4) the proposed procedure is validated by performing well-controlled laboratory experiments.

* information listed above is at the time of submission.

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