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Parametric Analysis of Various Test Configurations for Measuring the Interlaminar Fracture Toughness of CMCs using LayerSlayer and AbaqusSBC: AURORA FLIGHT SCIENCES CORPORATION Topic: N13AT008
The low weight, excellent durability and heat resistance of ceramic matrix composites (CMCs) make them attractive materials for use in aircraft engine hot sections, where improved overall engine efficiency can be realized. Nevertheless, the interlaminar properties of CMCs must be well understood before CMCs can realistically replace metallic superalloys in engine hot sections, and no standardized ...STTR Phase I 2013 Department of DefenseNavy
Maneuver Prediction and Avoidance Logic For Unmanned Aircraft System (UAS) Encounters with Non-Cooperative Air TrafficSBC: RDRTEC INCORPORATED Topic: N13AT003
RDRTec Inc. and Lincoln Laboratory propose to establish the feasibility and develop the plan for an extensible analytic framework and methodology to address unanticipated maneuver encounter modeling, collision risk estimation, and ownship maneuver logic. With the widespread introduction of Unmanned Aircraft Systems (UAS), the nature of the airspace will change significantly over the next 10-20 yea ...STTR Phase I 2013 Department of DefenseNavy
Maneuver Prediction and Avoidance Logic For Unmanned Aircraft System Encounters with Non-Cooperative Air TrafficSBC: NUMERICA CORPORATION Topic: N13AT003
For Unmanned Aircraft Systems (UAS) to operate seamlessly in both the U.S. National Airspace System (NAS) and abroad, it will be crucial that they possess a sense-and-avoid (SAA) capability that can ensure safe operations among maneuvering, non-cooperative aircraft. Numerica Corporation, in partnership with Johns Hopkins University, proposes to develop a set of algorithms to model the uncertaintie ...STTR Phase I 2013 Department of DefenseNavy
SBC: CHARLES RIVER ANALYTICS, INC. Topic: N11AT031
Submarine commanders must make complex decisions to accomplish increasingly diverse missions. Moreover, concurrent missions may involve contradictory requirements. Planning must also account for the unexpected, including equipment failures, environmental factors, or external events that impact the ship's mission(s). Since all submarine operations involve a degree of risk, the commander must b ...STTR Phase II 2013 Department of DefenseNavy
SBC: METIS DESIGN CORP Topic: N12AT007
This STTR aims to develop a novel method for detecting and tracking growth of cracks in rotorcraft gearbox. Aerospace structures are subject to dynamic loading. In particular, gearbox components experience continuous cyclic loading, wear and eventually develop fatigue cracks. As opposed to most other aircraft components, gearbox components are non-redundant, so a failure can have catastrophic cons ...STTR Phase II 2013 Department of DefenseNavy
SBC: Ocean Acoustical Services and Instrumentation Systems, Inc. Topic: N12AT016
The OASIS/WHOI team will design and develop a long-range under-ice acoustic navigation and telemetry system. The Phase I work has resulted in a much-improved model for under-ice acoustic propagation and an in-depth exploration of the potential for regional scale (200-500 km) acoustic navigation and communication. Phase II work will focus on bounding the design problem and selecting a suitable freq ...STTR Phase II 2013 Department of DefenseNavy
SBC: Zeutro, LLC Topic: N12AT025
Functional encryption (FE) is a new vision of public key encryption that allows access controls to be embedded within a ciphertext. This project has three main components: (1) develop an FE toolkit and FE-based key management service, (2) conduct essential cryptographic research to support deployment, and (3) explore opportunities for interoperability and integration for FE with existing and futur ...STTR Phase II 2013 Department of DefenseNavy
SBC: CORNERSTONE RESEARCH GROUP INC Topic: N18BT031
Large aerospace composite structures currently require autoclaves and ovens to achieve desired performance which are expensive to purchase, costly to operate, and often limit part size and production rate. Ovens and autoclaves rely on convective heating which is inefficient, consumes large amounts of energy, and can be difficult to predict. Alternative cure processes using external heaters or hot ...STTR Phase I 2019 Department of DefenseNavy
SBC: MAINSTREAM ENGINEERING CORP Topic: N18BT031
For this research program, Mainstream will collaborate with Colorado State University (CSU) to develop a nanostructured heater capable of curing aerospace grade composites out-of-autoclave (OOA). The use of autoclaves is the primary cost driver in composite manufacturing due to size limitations, long processing times, and inefficient energy usage. Therefore, the Navy is looking to develop a nanost ...STTR Phase I 2019 Department of DefenseNavy
SBC: METIS DESIGN CORP Topic: N18BT031
Manufacturing of structural composites traditionally employs autoclaves to achieve high quality parts, including high fiber-volume-fractions and low porosity. A laminate comprised of stacked prepreg plies are cured under a vacuum in addition to ~7 bar of pressure to prevent formation of voids, particulalry in interlaminar (inter-sheet/ply) regions. However, manufacturing composites within an autoc ...STTR Phase I 2019 Department of DefenseNavy