Home >> Tech Briefs >> Mechanics
Jun 2009
Device for Measuring Low Flow Speed in a Duct

Speed can be determined to within ±0.2 cm/s.

A multiple-throat venturi system has been invented for measuring laminar flow of air or other gas at low speed (1 to 30 cm/s) in a duct while preserving the laminar nature of the flow and keeping the velocity profile across the ...
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Autoignition Chamber for Remote Testing of Pyrotechnic Devices

This rugged, reusable chamber is portable and can remotely heat pyrotechnics for autoignition tests.

The autoignition chamber (AIC) performs by remotely heating pyrotechnic devices that can fit the inner diameter of the tube furnace. Two methods, a cold start or a hot start, can be used with this ...
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Device Acquires and Retains Rock or Ice Samples

The Rock Baller is a sample acquisition tool that improves sample retention. The basic elements of the Rock Baller are the tool rotation axis, the hub, the two jaws, and the cutting blades, which are located on each of the jaws. The entire device rotates about the tool rotation axis, ...
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Pneumatic Haptic Interfaces

Arrays of balloonlike actuators would provide tactile feedback from robot hands.

Haptic interfaces in the form of arrays of balloonlike pneumatic actuators are being developed to provide tactile feedback from (1) remote-manipulator hands, tools on the tips of robot arms, and other, similar devices to (2) the hands of human ...
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Cryogenic Feedthrough Test Rig

The cryogenic feedthrough test rig (CFTR) allows testing of instrumentation feedthroughs at liquid oxygen and liquid hydrogen temperature and pressure extremes (dangerous process fluid) without actually exposing the feedthrough to a combustible or explosive process fluid. In addition, the helium used (inert gas), with cryogenic heat exchangers, exposes the feedthrough ...
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May 2009
Radial-Electric-Field Piezoelectric Diaphragm Pumps
Ejector-Enhanced, Pulsed, Pressure-Gain Combustor
“Zero-Mass” Noninvasive Pressure Transducers
Computerized Machine for Cutting Space Shuttle Thermal Tiles
Orbiting Depot and Reusable Lander for Lunar Transportation
Apr 2009
Parallel Hybrid Vehicle Optimal Storage System
Mar 2009
Quick-Connect Windowed Non-Stick Penetrator Tips for Rapid Sampling
Prediction of B-Pillar Failure in Automobile Bodies
Modeling Unsteady Cavitation and Dynamic Loads in Turbopumps
Feb 2009
Ultrasonic/Sonic Anchor
Jan 2009
Alternative OTEC Scheme for a Submarine Robot
Utilizing Ocean Thermal Energy in a Submarine Robot
Fuel-Cell Power Systems Incorporating Mg-Based H2 Generators
Dec 2008
Deployable Crew Quarters
Nonventing, Regenerable, Lightweight Heat Absorber
“Bootstrap” Configuration for Multistage Pulse-Tube Coolers
Miniature High-Force, Long-Stroke SMA Linear Actuators
Reducing Liquid Loss During Ullage Venting in Microgravity
Demisable Reaction-Wheel Assembly
Nov 2008
Deep-Sea Hydrothermal-Vent Sampler
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