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Mitigation of Helmet Vibration

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-19-C-0268
Agency Tracking Number: N172-120-0117
Amount: $394,839.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: N172-120
Solicitation Number: 17.2
Solicitation Year: 2017
Award Year: 2019
Award Start Date (Proposal Award Date): 2019-07-22
Award End Date (Contract End Date): 2020-07-31
Small Business Information
5717 Huberville Avenue Suite 300
Dayton, OH 45431
United States
DUNS: 002231525
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Ronald L Hinrichsen
 Senior Scientist/Subject Matter Expert
 (937) 255-4440
Business Contact
 Daniel Cyphers
Phone: (937) 252-2710
Research Institution

During operation of E-2D aircraft, excessive cockpit noise and helmet vibration have resulted in documented cases of aircrew fatigue, hearing loss, and missed radio communications. Preliminary studies have identified that poor vibro-acoustic performance of the HGU-68/P helmet in the frequency range of E-2D operation may be the root cause. Skyward proposes a solution leveraging high-fidelity computational simulation to predict the HGU-68/P vibro-acoustic performance and physics-based multidisciplinary optimization to explore design alternatives and potential solutions to reduce sound pressure levels and dynamic excitations experienced by the wearer. Efforts will include 3D scanning to capture helmet geometry, creation of high fidelity structural-acoustic finite element (FE) model of the helmet in the E-2D environment, validation of the model against experimental testing to reduce uncertainty in the computational models, and design optimization to explore solutions. The Phase I effort produced a high-fidelity, experimentally validated computational model of the helmet, as well as multiple options for design modifications to reduce noise intensity and helmet accelerations. Phase II will refine initial models with additional test data, better define identified design options, create models of the design options, and optimize and fully evaluate the design options. Phase II Options will create and fully evaluate prototypes.

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

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