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H6 Systems proposes building a transmitter based on a modified coupled cavity TWT from CPI to increase coverage of MIL-STD-464C. Present testing methods are lacking in the coverage of power for frequencies from 3.0 3.3 GHz. The new transmitter will allow testing at both peak and average powers and will fill requirements for fields shipboard not in the main beam.

The single-crystal (SC) structure of modern jet engine turbine blades provides excellent resistance to high-temperature creep, allowing tight tolerances to be maintained over the life of the superalloy part. However, the turbine blade geometry includes complicated features that can promote the growth of discrete recrystallized grains that lower the parts creep resistance and may lead to catastroph ...

Use of motorcycles helmets significantly reduces the risk of fatality or serious brain injury to riders in the event of a crash, but riders often do not wear helmets in warm weather because of thermal discomfort. We propose to develop an innovative ventilation and cooling system that will maintain a cool, dry environment inside the helmet while also meeting applicable safety standards. The key inn ...

Measurement surveys of full-scale ship airwakes are needed to validate computational fluid dynamics (CFD) models of these wakes. Airwake computations guide the design of ship superstructures, improve the fidelity of flight simulators, and save time and reduce risk during flight tests to define launch and recovery envelopes for ship and aircraft combinations. Current full-scale test techniques invo ...

With the continued electrification of military systems, lithium-ion (Li ion) batteries are increasingly targeted for electrical energy storage due to exceptional energy and power density. However, Li ion batteries operating in hostile thermal and mechanical environments typical of military aircraft are prone to catastrophic thermally-induced failures. Hazards including loss of power, fire, and exp ...

Fault dynamics of large format lithium-ion (Li-ion) battery packs are complex, difficult to predict, and challenging to protect against. Consequently, there is great interest in developing fault mitigation strategies to optimize pack performance and prevent individual cell failures from propagating to other cells or the host platform. During this program we will evaluate active monitoring and cont ...

Reliable ignition is critical to the operational performance of augmented military engines. Augmentors must reliably ignite when thrust is needed or system (and pilot) safety could be compromised. Augmentor ignition is particularly challenging relative...

Current inspection methods for Integrally Bladed Rotors (IBRs) and compressor blades are limited to contact measurement systems that scan individual points, defined lines, or surfaces and non-contact systems that use point and line scanning techniques. ...

Expeditionary airfields (EAFs) are shore-based aviation support systems that are used by warfighters all over the world to rapidly launch and recover aircraft. EAFs are typically assembled on site using AM2 mats. Currently, AM2 mats are not reused beca...

Typical piping joint designs in the fuel systems of Navy ships are susceptible to weakening due to poor inherent weld quality and localized corrosion.The current composite patches and other processes that represent the state-of-the-art for reinforcemen...