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Energy

Tula’s DMD Promises Gains in EV Efficiency

Nestled in San Jose, California just south of the San Francisco Bay, the small but mighty team at Tula Technologies continues to develop advancements for optimizing the efficiency of ICE and...

Editorial
Power

Engine Technology a Decade Later

A securities analyst from New York called me recently, to ask about the future of powertrain. Specifically, she wanted my prediction for a timeframe for the demise of both gasoline and diesel IC engines....

Technology Report
Power

Light-vehicle Horsepower Hits Historic High in 2021

Full-electric propulsion for the U.S.’s light-vehicle market segments is gaining momentum, but developers of the internal-combustion engine aren’t throwing in the towel just yet....

Briefs
Aerospace

Fatigue Behavior of an Advanced Melt-Infiltrated SIC/SIC Composite with Environmental Barrier Coating at 1200°C in Air and in Steam

SiC fiber-reinforced SiC matrix composites are being evaluated for aircraft engine hot-section components.

Q&A
Manned Systems

Advancing the OP Engine on Three Fronts

Global demand for cleaner, more power-dense internal combustion engines (ICE) is expected to continue into the middle of this century, for a variety of vehicle applications and markets. San...

Briefs
Energy

High-Temperature Ni-Based Superalloy Composition

The alloy has applications in jet turbine disks and other high-stress and/or high-temperature environments.

Articles
Green Design & Manufacturing

Bigger Processors, Smaller Engines

Engine designers are advancing electronic control systems to eliminate components and generate more power from smaller engines. They also are leveraging networks to integrate transmissions, global...

Q&A
Energy

Cummins Unveils EPA-Compliant 2021 Heavy-Duty Diesels

Cummins reserved its first virtual press event since the pandemic onset to reveal details of its EPA 2021 emissions-compliant X12 and X15 Performance Series engines. Built upon the...

Articles
Mechanical & Fluid Systems

An Exhaust Symphony in the Key of C8

Few things in the automotive space are more soul-stirring than the sound of a V8 engine – at wide-open throttle, or top-gear cruising, or at any combination of engine speed and load in between. For...

News
Energy

Electric Actuators Can Benefit Heavy-Duty Diesels

As the heavy-duty diesel (HDD) truck world looks to likely future alternative power sources – battery or fuel cell – R&D into improving internal-combustion engine (ICE)...

Technology Report
Green Design & Manufacturing

BP’s Nexcel Sealed-Cell Oil System an Alternative for Controlling GHG Emissions

The automotive industry is broadening its spectrum of technology to support the reduction of global greenhouse gases not just via electric drivetrains and...

Briefs
Propulsion

Ducted Fuel Injection for Soot Reduction

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...

News
Transportation

Many ICE Paths Lead to Reduced Emissions

Despite all the hype about electrification, internal combustion engines (ICEs) are likely to dominate the commercial vehicles market for several years. But these engines will have to advance using...

News
Power

Starship Road Trip

Dubbed the Starship Initiative, the collaboration between Shell and AirFlow Truck Co. on the Starship Class 8 concept truck achieved 178.4 ton-mpg for freight ton efficiency (FTE) in a recent cross-country drive, a...

Articles
Software

CAM Software Technology Keeps Pace with Aerospace Manufacturing Challenges

Aerospace industry component manufacturing is in a large growth cycle. Advancements to materials and engine efficiency have created clear benefits for replacing a...

Articles
Aerospace

Using Sintered Fiber Metal Composites for Aircraft Acoustic Attenuation

Sintered fiber metal composites are used in aircraft as an acoustic media within environmental ducting, inlet and exhaust systems. The material can be engineered to meet...

Briefs
Aerospace

Wet Active Chevron Nozzle for Controllable Jet Noise Reduction

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...

News
Energy

Making Strides in Sustainable Transportation

A material scientist by training working on processing, manufacturing, and characterization development for advanced energy storage systems, Claus Daniel, Ph.D., organized the Lightweighting...

Articles
Automotive

2014 Create the Future Design: Automotive & Transportation Category Winner

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

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

Articles
Aerospace

Commercial Programs Are Flying High

Boeing and Airbus can hardly keep up with demand for 150-seat jets, and both have increased their own monthly production rates to well over 40 aircraft, stretching the capacity of the supply chain to 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
Aerospace

More Electric, Integrated Fuel Systems

Global warming and environmental friendliness considerations have recently been key for multiple global industries. In the commercial aviation industry, reduction of aircraft emissions, including...

Briefs
Electronics & Computers

Implementing Interconnected Generation in Future Civil Aircraft

In addition to providing thrust, the engines on conventional civil jet airliners generate power for onboard systems and ancillary loads in the form of pneumatic, hydraulic, and...

Briefs
Physical Sciences

Quantitative Analysis of a Hybrid Electric Humvee for Fuel Economy Improvement

The Army has acquired several hybrid platforms to assess the applicability of hybrid technology for military missions. These hybrid platforms include both series...

Articles
Research Lab

NASA Technology Transfer: The Impact of Innovation

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

Ejector-Enhanced, Pulsed, Pressure-Gain Combustor

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...