Keyword: Heat transfer

Briefs: Materials
Insulative Carbon Fiber Systems for Aerospace Applications

New insulative carbon-fiber composite systems have been developed for use in structural and thermal applications for the aerospace vehicle interface. The sandwich-type composite structure, including carbon fiber and aerogel blanket materials, is based on the previously disclosed family...

Briefs: Materials

NASA seeks to license the Adaptive Thermal Management System (ATMS) for use in commercial applications. Developed at the John F. Kennedy Space Center, the ATMS provides a way to regulate heat transfer and...

Briefs: Materials

The Johnson Space Center researched methods to coat aerogel insulation in order to make it better able to withstand vibration, mechanical compression and...

Briefs: Materials
Aeroplastic Composites

Aeroplastic refers to a family of polymeric composites with properties that provide a significant reduction in heat transfer. These composites reduce the thermal conductivity of the base polymer resin between 20%-50% without changing its mechanical properties or modifying the original techniques for processing those...

Briefs: Mechanical & Fluid Systems

NASA’s Langley Research Center develops innovative technologies to control fluid flow in ways that will ultimately result in improved performance and fuel efficiency....

Briefs: Sensors/Data Acquisition
Flexible Thin Metal Film Thermal Sensing System

NASA’s Langley Research Center has extensively studied self-metallized polyimide films for aerospace applications. These thin films have shown promise not only as reflective coatings, but also conductive coatings. NASA believes that its technology may offer advantages to sensor companies,...

Briefs: Mechanical & Fluid Systems
Ultra-Compact Heat Rejection System

Radiator panels are the baseline heat rejection approach for most space systems. This approach is sound, but requires a large amount of surface area to radiate the anticipated heat load. The large panels require support structures to hold them in place and prevent damage. These structures impact mass and cost....

Briefs: Manufacturing & Prototyping
Lattice Structures Coating Concept for Efficient Thermal Linking Beds

Conventional air revitalization technology for removal of CO2, moisture, and trace organic contaminants usually involves a packed bed of sorbent pellets that can be regenerated using a concept similar to that of pressure swing adsorption (PSA). Additional heat input...

Briefs: Robotics, Automation & Control
Passive, Integrated, Sublimator-Driven Coldplate

Spacecraft thermal control systems typically perform three key functions — heat acquisition, heat transport, and heat rejection — in addition to those of insulation, heat generation, and heat storage. In a typical pumped fluid-loop spacecraft thermal control system, heat is acquired from...

Briefs: Mechanical & Fluid Systems
Design Support and Analysis Tool for Pyrotechnically Actuated Valves

This software predicts flow through the initiator of a Primer Chamber Assembly Valve. These valves exhibited a potential failure mode for specific operating conditions where dual simultaneous firings of the initiator occurred. The software tool was able to identify a fluid...

Articles: Electronics & Computers

In 1964, NASA’s Electronics Research Center (ERC) opened in Massachusetts, serving to develop the space agency’s in-house expertise in electronics during...

Briefs: Manufacturing & Prototyping
Thermal Spraying of Coatings Using Resonant Pulsed Combustion

Thermal spray coating is not a new process. There are different techniques utilized that depend on the objective function of the coating, the environment to which the coated piece will be subjected, and the coating material used. In any application, quality is ultimately measured by...

Articles: Aerospace

Thermally conductive adhesives are uniquely qualified to meet the increasingly diverse requirements of advanced electronics systems. From their...

INSIDER: Sensors/Data Acquisition

Light, sound, and now, heat. Just as optical invisibility cloaks can bend and diffract light to shield an object from sight, and specially fabricated acoustic metamaterials can hide an...

Briefs: Test & Measurement
Measurement of O-phthalaldehyde (OPA)

O-phthalaldehyde (OPA) is a high-level disinfectant commonly used, for example, for sterilization of heat-sensitive medical instruments; it demonstrates effective microbicidal activity against a wide range of microorganisms (including mycobacteria, gramnegative bacteria, and spores). On the International...

Briefs: Materials
Hybrid Laminate Composite for Harsh Environments and High-Performance Applications

A multi-functional composite laminate material has been developed for structural and thermal applications for use in durable cryogenic fuel tanks for transportation vehicles and/or in the construction of habitats. The technology focuses on aerogel and fiber...

Briefs: Mechanical & Fluid Systems

This work involved designing a liquid nitrogen cold-plate heat exchanger with a high thermal mass using code-standard, high-pressure tubing. High thermal mass requires a substantial amount of...

Briefs: Robotics, Automation & Control
Lunar Materials Handling System

A method was developed for transfer of lunar soil into and out of process equipment. The Lunar Materials Handling System (LMHS) conveys solids to a process vessel, provides a gas-tight seal, prevents seal contamination, and minimizes wear from abrasive particles. The LMHS increases equipment life and minimizes...

Briefs: Data Acquisition

Thermoelectric (TE) energy recovery is an important technology for recovering waste thermal energy in high-temperature...

Briefs: Information Technology
STARS Finite Element Multidisciplinary Analysis Computer Program

An efficient, cost-effective, and unique computer program has been developed that analyzes a variety of practical engineering problems. STructural Analysis Routines (STARS) is a fully integrated, multidisciplinary, finite element-based, graphic-oriented analysis tool that combines...

Briefs: Mechanical & Fluid Systems

In this innovation, a team successfully developed and implemented a combined convective and conductive cooling system that permits rapid cooling....

Briefs: Sensors/Data Acquisition
Guarded Flat Plate Insulation Test Cryostat

The guarded flat plate insulation test cryostat (Cryostat-500) is a boil-off calorimeter comprising a flat-bottom test apparatus for measuring the absolute thermal performance of an insulation test article. Typical dimensions allow accepting test specimens 200 mm in diameter by up to 30 mm thick. The...

Articles: Physical Sciences

Most of us cannot comprehend the task of building something to withstand temperatures over 4,000 °F, but NASA can. The space shuttles endured such temperatures when returning to...

Briefs: Mechanical & Fluid Systems
Turbo-Brayton Converter for Fission Surface Power Applications

Producing electric power for space applications is challenging. Although short-term missions can use batteries or fuel cells, these sources are not practical for durations longer than one month. Photovoltaics become less attractive as the distance from the Sun increases, and they are...

Briefs: Software

Keysight Technologies (formerly Agilent Technologies) develops world-leading equipment for solving tough measurement challenges. The company’s Infiniium 90000 Q-Series...

Articles: Lighting

LEDs are experiencing increasing acceptance and growth across many market segments. Part of this growth is due to new, higher-power LEDs that can be packaged in increasingly small areas. However, increased...

Briefs: Materials
Refractory Open-Cell Foam Fuel Matrix for High-Efficiency Nuclear Thermal Propulsion

A tricarbide foam fuel material has been developed that can operate at temperatures near 3,000 °C, without substantial hydrogen erosion, while providing highly efficient heat transfer to the coolant or propellant. A tricarbide foam fuel matrix of zirconium...

Briefs: Physical Sciences

This innovation provides the following thermal properties data from a single steady-state test run: the effective thermal conductivity value (ke) for the full temperature difference, and...

Briefs: Motion Control
Fluidic Actuators with No Moving Parts

Two new fluidic actuator designs were developed to control fluid flow in ways that will ultimately result in improved system performance and fuel efficiency in to improve the aerodynamic performance of a variety of vehicles. These flow control actuators, often referred to as fluidic oscillators or sweeping...

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