Propulsion

Briefs : Aerospace
Axial Magnetic Flux Airflow Integrated Compressor-Generator-Motor Turbojet Design

Innovators at the NASA Armstrong Flight Research Center have developed a compressor-generator-motor turbojet design concept that integrates the generator with the aerodynamic blade structures of the compression section of turbomachinery. This reduces weight and...

Briefs : Energy
High-Voltage Power System for Hybrid Electric Aircraft Propulsion

Innovators at NASA’s Glenn Research Center have developed a variable-frequency, alternating current (AC) power system to enable turbo-electric and hybrid electric...

Briefs : Energy
Aluminum as a Fuel

Batteries and combustion engines each have distinctive benefits and limitations. Batteries have simple construction and operate silently; however, their energy density (i.e., the energy per unit volume) is poor, and...

Briefs : Mechanical & Fluid Systems
Robotic Gripper for Satellite Capture and Servicing

The robotic gripper was developed at NASA Goddard Space Flight Center as part of a robotic satellite servicing mission. The gripping device can be used to autonomously or remotely grasp and...

Briefs : Aerospace
Non-Catalytic Ignition System for High-Performance Advanced Monopropellant Thrusters

Anon-catalytic pyrotechnic ignition system was developed for advanced green monopropellant systems operating with hydroxylammonium nitrate (HAN)-based monopropellant AF-M315E. This technology will provide increased performance and new operating regimes for...

Briefs : Propulsion
Thruster-Based Attitude and Translation Control with Minimum Pulse-Count Disturbance Rejection

Thruster-based control typically requires a substantial engineering effort in order to mitigate an important issue: the control system tends to use many thruster pulses to accomplish what a single thruster pulse could do instead. This fundamental...

Briefs : Transportation
Efficient Packaging Process for One-Piece Deployable Thin Membrane

NASA’s Marshall Space Flight Center is building a small CubeSat that uses an 85-m2 solar sail deployed from a central location to capture the push of photons...

Briefs : Energy
Flexible, Gravity-Fed Heat Pipe

The advent of cryocooler technology ushers in an era where a cryogenic environment is created and maintained locally. It is no longer necessary to transport cryogen from a factory where it is produced to the...

Briefs : Manufacturing & Prototyping
Gimbal for Steering Propelled CubeSats

NASA is preparing for the next generation of CubeSats that are propelled and will make directional maneuvers. The new gimbal mount provides a seat for the motor, and controls the position of the...

Briefs : Test & Measurement
SolidSense: Gas Analyzer on a Chip

The SolidSense sensor platform measures all EPA-regulated gas emissions (nitrogen oxides, carbon monoxide, and hydrocarbons), in addition to ammonia, with high accuracy and sensitivity. The chip-scale gas...

Briefs : Propulsion
Wireless Ultrasonic Inspection Propulsion System

During inspection of pressure vessels and other large structures, an industry-accepted fixture is used to hold the search unit a predetermined distance from the area of interest under inspection. This fixture is then moved manually around the area of interest so that data can be collected and...

Briefs : Propulsion
Towed-Glider Airborne Launch System Cuts Costs and Increases Efficiency and Safety

Putting a satellite into low Earth orbit requires a lot of energy, with ground-launched rockets expending two-thirds of their propellant fighting to get...

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

The purpose of this work was to create a safe, green, controllable solid rocket motor that can be pulsed a number of times with electricity to control the ignition and extinguishment times to produce a required thrust or impulse bit. The innovation features an Electric Solid...

Briefs : Propulsion
Rotary Piston Engine

There are many applications where a high power-to-weight engine is either necessary or helpful. Uses for this type of engine range from handheld power equipment, to motorcycles and aircraft — uses multiply when fuel efficiency, compactness, and versatility are added. Currently, there are few viable options available to...

Briefs : Propulsion
Green Liquid Monopropellant Thruster for In-Space Propulsion

Hydrazine has been the standard baseline liquid monopropellant for space propulsion over many decades since replacing hydrogen peroxide. Hydrazine was preferred over peroxide due to its easier storability and higher performance. Like peroxide, hydrazine can be readily decomposed by...

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