Keyword: Microgravity

Briefs: Test & Measurement
Cryogenic and Non-Cryogenic Optical Liquid Level Instrument for Stratified Conditions

Typical cryogenic tank metering systems use a series of thermocouple, RTD, or other temperature or resistive devices in a rake or array configurations. Since these operate using the thermal change between the liquid and gas fluid phases, they are limited by...

Briefs: Physical Sciences
Method and Apparatus for Determining Propellant Mass in Microgravity by Capacitance Measurements

Propellant mass gauging in microgravity has posed a challenge for decades. Various methods have been applied, including ultrasonic, capacitance probes, point level sensors, thermal detectors (thermistors, thermocouples, etc.), Michelson...

Application Briefs: Sensors/Data Acquisition
LS16 liquid flow sensor
Sensirion
Westlake Village, CA
805-409-4900
www.sensirion.com

A liquid flow sensor from Sensirion will measure the impact of microgravity on the...

Articles: Automotive

In the beginning, safety outweighed comfort in spacecraft designs for human space travel. Capsules like Gemini and Apollo were small, and most of the flight activities were performed...

Briefs: Mechanical & Fluid Systems
Cryogenic Mixing Pump with No Moving Parts

Refueling spacecraft in space offers tremendous benefits for increased payload capacity and reduced launch cost, but the problem of thermal stratification in long-term storage tanks presents a key challenge. To meet this challenge, a reliable, compact, lightweight, and efficient cryogenic mixing pump...

Briefs: Mechanical & Fluid Systems

Improvements in brine water recovery are critical to advancing NASA’s goals for human exploration of space. Water recovery systems must minimize the need for new supplies of clean water by closing the water...

Briefs: Materials
Long-Life, Hydrophilic, Antimicrobial Coating for Condensing Heat Exchangers

Future manned spacecraft and lunar or Mars outposts will need a condensing heat exchanger (CHX) to control humidity in the cabin atmosphere. Condensing surfaces must be hydrophilic to control condensate flow and ensure efficient operation in zero gravity, and biocidal...

Briefs: Mechanical & Fluid Systems
ATHLETE Low-Gravity Testbed

A six-degrees-of-freedom (DOF) testbed was developed for evaluating microgravity and low-gravity proximity and contact operations, e.g. in the vicinity of a near Earth orbit, for simulation of proximity operations for a human mission to an asteroid. This is accomplished using an “inverted Stewart platform” where...

NASA Spinoff: Sensors/Data Acquisition
NASA Technology

Objects that orbit the Earth, such as the International Space Station (ISS), provide a unique environment called zero-g, or more correctly, microgravity. All objects in orbit...

Articles: Materials

In the winter of 2009, Washington, DC workers faced the prospect of a difficult commute due to record-setting snowfall. But thousands of the city’s Metrorail riders found the public transportation...

Briefs: Materials
Centrifugal Sieve for Gravity-Level-Independent Size Segregation of Granular Materials

Conventional size segregation or screening in batch mode, using stacked vibrated screens, is often a time-consuming process. Utilization of centrifugal force instead of gravity as the primary body force can significantly shorten the time to segregate feedstock...

Briefs: Mechanical & Fluid Systems
Flexible Mechanical Conveyors for Regolith Extraction and Transport

A report describes flexible mechanical conveying systems for transporting fine cohesive regolith under microgravity and vacuum conditions. They are totally enclosed, virtually dust-free, and can include enough flexibility in the conveying path to enable an expanded range of...

Briefs: Materials
Microgravity Storage Vessels and Conveying-Line Feeders for Cohesive Regolith

Under microgravity, the usual methods of placing granular solids into, or extracting them from, containers or storage vessels will not function. Alternative methods are required to provide a motive force to move the material. New configurations for microgravity...

Briefs: Mechanical & Fluid Systems

This work is a method to drill into a rock surface regardless of the gravitational field or orientation. The required weight-on-bit (WOB) is supplied by a self-contained anchoring mechanism. The system...

Briefs: Mechanical & Fluid Systems
Dual-Compartment Inflatable Suitlock

There is a need for an improvement over current NASA Extravehicular Activity (EVA) technology. The technology must allow the capacity for quicker, more efficient egress/ingress, allow for “shirtsleeve” suit maintenance, be compact in transport, and be applicable to environments ranging from planetary...

Briefs: Mechanical & Fluid Systems
Waterless Clothes-Cleaning Machine

A waterless clothes-cleaning machine has been developed that removes loose particulates and deodorizes dirty laundry with regenerative chemical processes to make the clothes more comfortable to wear and have a fresher smell. This system was initially developed for use in zero-g, but could be altered for 1-g...

Briefs: Physical Sciences
Advanced Magnetic Materials Methods and Numerical Models for Fluidization in Microgravity and Hypogravity

To support long-duration manned missions in space such as a permanent lunar base, Mars transit, or Mars Surface Mission, improved methods for the treatment of solid wastes, particularly methods that recover valuable resources, are needed....

Briefs: Mechanical & Fluid Systems
Regolith Advanced Surface Systems Operations Robot Excavator

The Regolith Advanced Surface Systems Operations Robot (RASSOR) excavator robot is a teleoperated mobility platform with a space regolith excavation capability. This more compact, lightweight design (

Briefs: Medical
Wideband Single-Crystal Transducer for Bone Characterization

The microgravity conditions of space travel result in unique physiological demands on the human body. In particular, the absence of the continual mechanical stresses on the skeletal system that are present on Earth cause the bones to decalcify. Trabecular structure decreases in...

Application Briefs: Physical Sciences

A combustion experiment jointly designed by scientists and engineers at NASA’s Glenn Research Center (Cleveland, OH) and the Universities Space Research Association (USRA) is...

Briefs: Medical
Developing Physiologic Models for Emergency Medical Procedures Under Microgravity

Several technological enhancements have been made to METI’s commercial Emergency Care Simulator (ECS) with regard to how microgravity affects human physiology. The ECS uses both a software only lung simulation, and an integrated mannequin lung that uses a...

Briefs: Information Technology
SE-FIT

The mathematical theory of capillary surfaces has developed steadily over the centuries, but it was not until the last few decades that new technologies have put a more urgent demand on a substantially more qualitative and quantitative understanding of phenomena relating to capillarity in general. So far, the new theory development...

Briefs: Software

NASA is interested in designing a spacecraft capable of visiting a near- Earth object (NEO), performing experiments, and then returning safely....

Briefs: Physical Sciences

A new invention disclosure discusses a structure and process for separating gas from liquids in microgravity. The Microgravity Passive Phase Separator consists of two concentric, pleated, woven...

Briefs: Mechanical & Fluid Systems
Magnetic Interface for Segmented Mirror Assembly

Newly developed magnetic devices are used to create an interface between adjacent mirror segments so that once assembled, aligned, and phased, the multiple segments will behave functionally equivalent to a monolithic aperture mirror. One embodiment might be a kinematic interface that is reversible...

Articles: Manufacturing & Prototyping
YouTube and NASA Want Student Experiments

NASA has partnered with Space Adventures to support the YouTube Space Lab competition that invites students to envision and design their own experiment with the ultimate prize -- flying it on the International Space Station.

The contest opened on October 11, and will continue to accept submissions...

Briefs: Physical Sciences

To date, the method for astronauts to drink liquids in microgravity or weightless environments is to suck the liquid from a bag or pouch through a straw. A new beverage cup works in...

Briefs: Mechanical & Fluid Systems
Active Response Gravity Offload System

The Active Response Gravity Offload System (ARGOS) provides the ability to simulate with one system the gravity effect of planets, moons, comets, asteroids, and microgravity, where the gravity is less than Earth’s gravity. The system works by providing a constant force offload through an overhead hoist...

Briefs: Mechanical & Fluid Systems
Vibration Isolation and Stabilization System for Spacecraft Exercise Treadmill Devices

A novel, passive system has been developed for isolating an exercise treadmill device from a spacecraft in a zero-G environment. The Treadmill 2 Vibration Isolation and Stabilization System (T2-VIS) mechanically isolates the exercise treadmill from the...

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