Mechanical/Mechatronics

Propulsion

Briefs : Propulsion
Suppression of Unwanted Noise and Howl in a Test Configuration Where Jet Exhaust is Discharged Into a Duct

This technology is based on a model-scale experiment simulating a test facility where an engine exhaust is discharged into a duct. Such a configuration sometimes encounters unwanted noise in the form of high-amplitude spectral levels in...

Briefs : Propulsion
Reynolds-Averaged Navier-Stokes Integration for Shock Noise (RISN)

Reynolds-averaged Navier-Stokes (RANS) Integration for Shock- Noise (RISN) is a computer program that evaluates acoustic analogies to predict jet noise. Jet noise is due to turbulence from the chaotic flow within the exhaust of a rocket or air-breathing jet engine. The source of...

Briefs : Propulsion
Regeneratively Cooled Porous Media Jacket

A non-toxic nitrous oxide fuel blend (NOFB) monopropellant with a high adiabatic flame temperature reaching and probably exceeding 3,450 K and a very high thermal decomposition limit (>390 °C) is under development. To design an optimal rocket engine that can handle the high adiabatic temperature...

Briefs : Propulsion
Multi-Pulse Motor (MPM) Designed for Use with Electric Solid Propellants

The multi-pulse motor is a solid-propellant rocket motor that is able to produce a number of pulses for various thrust levels (5 to 30 pulses and thrusts between 0.25 and 1.5 N, depending on electric power delivery system) and can be turned on and off through the...

Briefs : Propulsion
Adaptive Augmenting Control

Adaptive augmenting control (AAC) is a forward gain, multiplicative adaptive algorithm for launch vehicle flight control that meets three summary-level design objectives: Do no harm — return to baseline control design when not needed; respond to errors in the ability of the vehicle to track commands to increase...

News : Propulsion
NASA Uses Electric Propulsion in Experimental Plane

NASA is researching ideas that could lead to developing an electric propulsion-powered aircraft that would be quieter, more efficient, and more environmentally friendly than today's commuter aircraft. The proposed piloted experimental airplane is called Sceptor, short for the Scalable...

News : Energy
Researchers Advance Propulsion Toward Low-Carbon Aircraft

Just as hybrid or turboelectric power has improved fuel efficiency in cars, boats and trains, aeronautical engineers are exploring how planes can be redesigned and configured with electrical power. One of NASA’s goals is to help the aircraft industry shift from relying solely...

News : Aerospace
Researchers Use Rust to Improve 3D-Printing Process

A team of Northwestern researchers has created a new way to print three-dimensional metallic objects using rust and metal powders.

News : Propulsion
Precision NASA Thruster Keeps Spacecraft Still

The European Space Agency’s LISA Pathfinder spacecraft is on its way to space with the Disturbance Reduction System (DRS), a thruster technology developed at NASA's Jet Propulsion Laboratory. The DRS uses colloid micronewton thrusters, the first of their kind, to keep the spacecraft as still as...

News : Aerospace
NASA’s Green Propellant Spacecraft Moves Toward Launch

The propulsion subsystem for NASA's Green Propellant Infusion Mission (GPIM) has been integrated onto the spacecraft, moving the mission another major step toward scheduled launch in 2016. The propulsion subsystem will be the primary payload on the mission’s spacecraft. The mission will...

News : Test & Measurement
NASA Tests New Green Propellants for Satellites

To stay in the proper orbit, many satellites have thrusters – small rocket engines – that fire to change altitude or orientation in space. On Earth, where gravity dominates, five pounds of thrust, equivalent to 22 Newtons of force, may seem small, but in space, it doesn’t take much thrust to...

News : Semiconductors & ICs
Small, Modular Fusion Plant Brings Power Source Closer to Reality

Advances in magnet technology have enabled researchers at MIT to propose a new design for a practical compact tokamak fusion reactor — and it’s one that might be realized in as little as a decade, they say. The era of practical fusion power, which could offer a nearly...

News : Mechanical & Fluid Systems
Researchers Help NASA Eliminate Vibration in Space System Joints

Researchers at the University of Georgia are helping NASA determine if a key rocket component can withstand the rigors of the next generation of spaceflight. The bellows expansion joints serve several functions in rocket propulsion systems, perhaps most critically as connectors...

Briefs : Nanotechnology
Pyramid Micro-Electrofluidic-Spray Propulsion Thruster with Integrated Attitude and Thrust Vector Control

A micro-electrofluidic-spray propulsion (MEP) system was built on a micro scale, in which arrays of hundreds of nano-thrusters are etched on silicon wafers like ICs, only a centimeter on a side. Many dozens of these thruster chips can be...

Products : Motion Control
Servo Drive

Elmo Motion Control (Nashua, NH) offers the NANO Gold Twitter servo drive that delivers up to 4000 Watts of qualitative power, current up to 50A at 100VDC, and up to 15A/200V with advanced servo capabilities and support for EtherCAT or CANopen networking communication. It weighs 18 grams, is less than 13 cm3 in volume, and complies...

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