A portable data acquisition and instrumentation system (daisy) has been developed by as&m, inc. for wind-tunnel tests. it incorporates a unique and patented technique to accurately identify and demarcate regions of flow separation, reattachment, and the leading-edge stagnation point. simultaneously,… More

A completely new, solid-state flow measurement device will be develope d to measure and display three-dimensional airflow velocity vectors. unlike conventional instruments, the proposed innovation will be chara cterized by high-frequency response and high sensitivity to meet the s pecified range of… More

An innovative actively cooled structure concept is proposed which integrates proven cooling techniques and state-0f-the-art fabrication methods to extend the maximum combustor wall temperature, thereby reducing cooling requirements and aircraft weight while improving engine performance.… More

A completely new approach is proposed for the accurate measurement and display of the true airspeed of helicopters in hover, low-speed and forward flight. Unlike conventional instruments, the proposed innovation will be characterized by high-frequency response and high sensitivity across the range… More

The new aerospace materials are finding applications in the design of military armor vehicles. However, the effect on ride quality, fire control, and internal structural loads due to the increased flexibility of these new vehicles must be ascertained by dynamic analysis. The size of models required… More

Application of gamma titanium aluminides in gas turbine engines is limited by the room-temperature ductility loss that occurs when exposed to moist air or hydrogen-bearing gases. These gasses are typically found in a gas turbine engine environment. A protective and less expensive multilayer… More

Platinum additions are currently used to enhance the effectivenss of nickel-aluminide coatings under severe service conditions. This study will determine the feasibility of new, less expensive alternatives. Nickel-aluminide coatings protect hot turbine engine parts from the effects of oxidation and… More

This proposal describes a conceptual design and initial conceptual experiments of a remarkably straight-forward internal sensor that is capable of measuring three orthogonal strain components. The proposed sensor uses three cascaded in-line micro Fabry-Perot cavities that are individually addressed… More

Attachment areas in the regions of rotating components of gas turbine engines degrade due to fretting wear and fatigue. Plasma sprayed coatings are often used to protect these regions. A thin, dense, Ti(C, N) composite coating based on sol-gel process is proposed. The simple, cost-effective … More

"The Navy operates its helicopters and other aircraft in dust, salt, and water-laden environments. The impact of sand and water droplets on the rotor blades at high velocities causes rotor life to drop drastically. The cost of replacing and maintainingrotor blades is a significant factor. The… More

The Navy's helicopters and aircraft encounter dust, salt and water laden environments. The impact of sand and water droplets onto the rotor blades at high velocities causes rotor life to drop drastically. The cost of replacing and maintaining rotor blades is a significant factor. The current… More

Analytical Services and Materials, Inc. (AS&M) is proposing to develop and validate a process that can extend the fatigue life of and potentially self-heal existing fatigue damage of aluminum and titanium alloys. The genesis of the proposed process is research conducted at the NASA Langley Research… More