Stories

Briefs: Manufacturing & Prototyping
Self-Deployable Membrane Structures

Currently existing approaches for deployment of large, ultra-lightweight gossamer structures in space rely typically upon electromechanical mechanisms and mechanically expandable or inflatable booms for...

Briefs: Manufacturing & Prototyping
Reactivation of a Tin-Oxide-Containing Catalyst

The electrons in electric-discharge CO2 lasers cause dissociation of some CO2 into O2 and CO, and attach themselves to electronegative molecules such as...

Briefs: Materials
Low-Outgassing Adhesives

Products and manufacturing processes can be sensitive to outgassed chemical compounds, resulting in the use of adhesives, encapsulants, and sealants that have been specially formulated for low-outgassing performance. The...

Briefs: Materials
Functionalization of Single-Wall Carbon Nanotubes by Photo-Oxidation

A new technique for carbon nanotube oxidation was developed based upon the photo-oxidation of organic compounds. The resulting method is more benign than conventional oxidation...

Briefs: Mechanical & Fluid Systems
Miniature Piezoelectric Macro-Mass Balance

Mass balances usually use a strain gauge that requires an impedance measurement and is susceptible to noise and thermal drift. A piezoelectric balance can be used to measure mass directly by monitoring...

Briefs: Mechanical & Fluid Systems
Acoustic Liner for Turbomachinery Applications

The purpose of this innovation is to reduce aircraft noise in the communities surrounding airports by significantly attenuating the noise generated by the turbomachinery, and enhancing safety by...

Briefs: Mechanical & Fluid Systems
Water Tank With Capillary Air/Liquid Separation

A bladderless water tank (see figure) has been developed that contains capillary devices that allow it to be filled and emptied, as needed, in microgravity. When filled with water, the tank shields...

Briefs: Mechanical & Fluid Systems
Large-Flow-Area Flow-Selective Liquid/Gas Separator

This liquid/gas separator provides the basis for a first stage of a fuel cell product water/oxygen gas phase separator. It can separate liquid and gas in bulk in multiple gravity environments....

Briefs: Mechanical & Fluid Systems
Metering Gas Strut for Separating Rocket Stages

A proposed gas strut system would separate a liquid-fueled second rocket stage from a solid-fueled first stage using an array of pre-charged struts. The strut would be a piston-and-cylinder mechanism...

Briefs: Mechanical & Fluid Systems
Counterflowing Jet Subsystem Design

A counterflowing jet design (a spacecraft and trans-atmospheric subsystem) employs centrally located, supersonic cold gas jets on the face of the vehicle, ejecting into the oncoming free stream. Depending on the...

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