Keyword: Drag

Briefs: Aerospace
Injection of air at the trailing edge of a winglet further reduces drag.
Briefs: Mechanical & Fluid Systems
These actuators provide active flow control for airfoil surfaces and supersonic inlets of wing-borne vehicles.
Briefs: Test & Measurement
A new method of estimating the optimal trailing aircraft position in a formation increases fuel savings.
Briefs: Mechanical & Fluid Systems
This retractable de-orbit device facilitates targeted re-entry, attitude and orbital control, and collision avoidance.
Briefs: Mechanical & Fluid Systems
Stronger and flexible, polyimide aerogels provide insulation and structural support.
Briefs: Aerospace

NASA’s Langley Research Center has developed a new aircraft design with the engine nacelle over the wing, improving engine ground clearance and freeing landing gear design. While...

Briefs: Materials
Synthesis and Development of Polyurethane Coatings Containing Fluorine Groups for Adhesive Applications

Accumulation of insect strikes on the leading edge of airplane wings is a more serious problem than one might realize. Depending on the magnitude, such accumulation changes the aerodynamic characteristics of the wing, causing a change from...

Briefs: Mechanical & Fluid Systems
Ultra-Thin Capacitive Sensor Has the Least Possible Resistance to Motion

A thin and flexible sensor was developed for sensing sounds, since it can move with the airflow made by even the softest noises. With the least possible resistance to motion, the sensor addresses issues with accelerometers, microphones, and many other similar sensors. The...

Briefs: Materials

Resistance welding with direct current (DC) using inverter technology reduces costs by improving quality, reducing maintenance, and increasing productivity. Switching from...

Briefs: Aerospace

NASA has developed a novel method to render visible the density changes in air that cause a refractive index change by an airborne vehicle. These density changes include shock waves, vortices,...

Briefs: Energy

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: Electronics & Computers
Flexible, Water-Repellent Graphene Circuits for Washable Electronics

New graphene printing technology can produce electronic circuits that are low-cost, flexible, highly conductive, and water-repellent. Low-cost, inkjet-printed graphene can be tuned with a laser to make functional materials.

Briefs: Manufacturing & Prototyping
Conductive, High-Toughness Oxides Deposited by Plasma Spray-Physical Vapor Deposition (PS-PVD)

Oxide coatings deposited in Glenn Research Center's Plasma Spray-Physical Vapor Deposition (PS-PVD) facility can be processed to be mechanically tough (erosion-resistant) and electrically conductive at room temperature. The electrically conductive...

Briefs: Electronics & Computers

A new approach was developed that overcomes the limitation of conventional chip-testing methods on 3D chips, which include many thin horizontal “floors” connected to one another by vertical...

Briefs: Materials

NASA Langley Research Center has developed fluorinated alkyl ether-containing epoxies designed as an anti-insect coating. The robust and durable coating was developed...

Briefs: Materials

Superconducting materials are technologically important because electricity flows through them without resistance. Only low-temperature superconductivity seemed possible before 1986,...

Briefs: Software
Adjoint Error Estimation for Embedded-Boundary Cartesian Meshes for use with Cart3D

This technology provides means of estimating numerical errors in user-specified output functionals, such as lift or drag, for fluid flow simulations. The new method computes an improved estimate of the output (relative to the baseline simulation), an estimate of...

Briefs: Test & Measurement
Apparatus and Method to Test Abrasion Resistance of Material Using Airborne Particulate

Prior art techniques for testing abrasion resistance, such as the Taber test and the Bayer test, typically use a rubbing or scratching mechanism to test materials for abrasion resistance; specifically, either an abrasive material is rubbed across the test...

Briefs: Electronics & Computers

Interest in wearable electronics for continuous, long-term health and performance monitoring is rapidly increasing. The reduction in power levels consumed by sensors and electronic...

Briefs: Electronics & Computers

Fields ranging from autonomous driving to personalized medicine are generating huge amounts of data. But just as the flood of data is reaching massive proportions, the ability of computer chips to...

Briefs: Aerospace

NASA's Langley Research Center has designed a Multifunctional Boost Protective Cover (MBPC) for a Launch Abort System (LAS). In the event of a crewed launch,...

Briefs: Test & Measurement

The in-situ load system (ILS) provides the ground-testing community with a comprehensive tool that...

Briefs: Green Design & Manufacturing
Methods for Purifying Enzymes for Mycoremediation

This process applies to remediation and restoration of soils contaminated by fuel, polychlorinated biphenyl wastes, etc. While there can be a general beneficial effect of microbial communities, individual plant-fungus combinations can vary in their efficacy in removal of pollutants from the...

Application Briefs: Test & Measurement

CILS has developed a computer-printable, durable label for the identification of instruments on the Columbus Space Module, part of the International Space Station...

Briefs: Aerospace

NASA has developed a game-changing deployable aeroshell concept for entry, descent, and landing (EDL) of large science and exploration-class payloads. The...

Briefs: Mechanical & Fluid Systems

Fluid-pumped radiators are used to reject heat from structures to space. A fluid travels inside the structure to collect heat, and then travels...

Briefs: Test & Measurement

Research at The University of Nottingham (UK) and the University at Ningbo (China) has found that laser scanning is a viable structural safety technique to detect the damaging...

Briefs: Materials
Enhanced Composite Damping Through Engineered Interfaces

Material damping is important in the design of structures as it limits vibration amplitudes, increases fatigue life, and affects impact resistance. This is particularly true for composite materials, which are currently used extensively in applications that experience frequent dynamic...

Briefs: Manufacturing & Prototyping
Thermal Stir Welding Process

NASA's Marshall Space Flight Center is developing an improved joining technology called thermal stir welding that improves upon fusion welding and friction stir welding. This new technology enables a superior joining method by allowing manufacturers to join dissimilar materials and to weld at high rates. NASA's...