Keyword: Engine efficiency

Briefs: Aerospace
The alloy has applications in jet turbine disks and other high-stress and/or high-temperature environments.
Briefs: Manufacturing & Prototyping

Typical direct-injection engines, such as diesel engines, can produce soot due to fuel-rich combustion conditions. Filters and catalytic converters are currently used to reduce soot and harmful...

Briefs: Aerospace

NASA’s Langley Research Center researchers have developed a novel noise reduction system for jet engines. Aircraft jet engine noise is a major issue for airports, the...

Briefs: Test & Measurement
Rangefinder for Measuring Volume of Cryogenic or Caustic Turbulent Fluids

Specific impulse (ISP), or simply impulse (change in momentum) per unit amount of propellant consumed, is a measure of rocket and jet engine efficiency. The amount of propellant, or in the case of engine testing at the Stennis Space Center (SSC), cryogen consumed during...

Articles: Automotive
Steve Arnold
Engine Systems Innovations, Inc.
Rancho Palos Verdes, CA

Passenger car engines are sized to produce very high horsepower to suit the...

Briefs: Physical Sciences
Silicon Carbide Power Processing Unit for Hall Effect Thrusters

A high-efficiency, rad-hard, 3.5-kW SiC power supply was developed for the power processing unit (PPU) of Hall effect thrusters. This work specifically targets the design of a PPU power supply for the HiVHAC (High Voltage Hall Accelerator) thruster. The PPU power supply under...

Articles: Research Lab

Over the course of its history, NASA has nurtured partnerships with the private sector to facilitate the transfer of NASA-developed technologies. The benefits of these partnerships have...

Briefs: Manufacturing & Prototyping
Self-Assembling, Flexible, Pre-Ceramic Composite Preforms

In this innovation, light weight, high temperature, compact aerospace structures with increased design options are made possible by using self-assembling, flexible, pre-ceramic composite materials. These materials are comprised of either ceramic or carbon fiber performs, which are...

Briefs: Mechanical & Fluid Systems

An experimental combination of an off-the-shelf valved pulsejet combustor and an aerodynamically optimized ejector has shown promise as a prototype of improved combustors for gas turbine...

Briefs: Photonics/Optics
ICCD Camera Enables PLIF Technique for Fuel Visualization in Engines

Large-bore, slow-speed, natural gas two-stoke cycle engines used for power generation and gas compression on natural gas pipelines suffer from poor in-cylinder mixing processes caused by ineffective fuel delivery, which can increase emissions and create low engine efficiency...

Briefs: Robotics, Automation & Control

The designers and manufacturers of fuel cells are continually striving to improve the efficiency of their products. A design challenge facing the engineer relates to...

Briefs: Mechanical & Fluid Systems

A change in the design of the engine inlets of the T-38 airplane significantly reduces takeoff distances while increasing safety margins. Although the newer inlet design (see Figure 1) is based on well-known...

Briefs: Electronics & Computers

As electronic circuits become more densely packaged and higher in power, maintaining them within permissible temperature ranges becomes a major issue. This is especially true in the case of...

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Tool for Inspecting Alignment of Twinaxial Connectors

Articles: Data Acquisition

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Q&A: Green Design & Manufacturing

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