Aerospace

Briefs : Aerospace
NWRA AVOSS Wake Vortex Prediction Algorithm Version 3.1.1

The Northwest Research Associates (NWRA) Aircraft Vortex Spacing System (AVOSS) Prediction Algorithm computes trailing vortex trajectories and circulation decay in a plane perpendicular to the path of the aircraft that has generated the vortices. Underlying the algorithm are the following...

Briefs : Aerospace
Stretchable Mesh for Cavity Noise Reduction

NASA’s Langley Research Center has developed a landing gear cavity modification that reduces noise produced during aircraft approach and landing. The modification is an innovative stretchable...

Briefs : Aerospace
Ground-Based Sensors Detect Aircraft Laser Strikes

A growing safety concern for pilots and aircraft passengers is laser strikes, or the aiming of high-power laser pointers at aircraft. Laser strikes pose many dangers to pilots, including...

Briefs : Aerospace
Interlaminar Strengthening Concepts for Polymer Matrix Composites

During the last few decades, one of the most prevalent issues associated with the performance of aerospace composite materials has revolved around low interlaminar mechanical properties. The innovations described in this work outline a number of new and improved techniques for...

Briefs : Aerospace
Method of Fabricating Ultra-Short-Gate-Length Thin-Film Transistors Using Optical Lithography

The speed of thin-film transistors (TFTs) relates directly to their gate length, which must be kept as short as possible to lower electron transport time between electrodes, and improve its high-frequency response characteristics. Since current density...

Briefs : Aerospace
Development of Sodium Lidar for Spaceborne Missions

The metal layers at mesospheric altitudes are excellent tracers of neutral atmosphere dynamics, and have been used since the 1960s to study the chemistry and dynamics of the mesosphere. Ablation from meteors is believed to be the chief source of metals such as Na, Mg, K, Fe, and Ca in the...

Briefs : Electronics & Computers
Compact Active Vibration Control System

NASA Langley Research Center has developed a point sensor and piezoelectric actuator system to actively sense and reduce vibrations in flexible structures. The system uses a directional piezoelectric...

Briefs : Sensors/Data Acquisition
Solid-State Humidity Sensing Element

Researchers at NASA's Marshall Space Flight Center have developed a solid-state humidity sensing element that offers ultra-high sensitivity across a wide range of humidity levels. The sensing element is based on a novel ceramic dielectric material that exhibits large changes in capacitance as a function of...

Briefs : Sensors/Data Acquisition
Radar Scanner Tests Wind Turbine Blades for Defects

Wind power has become an indispensable part of an environmentally friendly power supply. Therefore, it is important for this growth market that wind turbines become more efficient, more...

Briefs : Photonics/Optics
New Optics See More with Less

NASA's Marshall Space Flight Center has developed a technology that combines a panoramic refracting optic (PRO) lens with a unique detection system to acquire a true 360-degree field of view. Although current imaging systems can acquire panoramic images, they must use up to five cameras to obtain the full field of...

Briefs : Aerospace
Portable Runway Intersection Display and Monitoring System

Developed at NASA’s Marshall Space Flight Center, the subject technology is a portable airport runway/taxiway intersection lighting system and signage designed to prevent incursions. This proposed runway incursion prevention solution aids in the management and prevention of airport...

Briefs : Aerospace
Networked In-Flight Validation Environment for Air Traffic Management Concepts

Modernization of the National Airspace System (NAS) will involve future air traffic management (ATM) concepts of operation and technology frameworks that rely on...

Briefs : Aerospace
Three-Dimensional Radiation Ray-Tracing for Hypersonic Entry Vehicles

Shock layer radiation is a form of aerodynamic heating that becomes significant at some entry velocities, depending on the vehicle trajectory and the planet’s atmosphere. Radiation heating is commonly computed with an appropriate method known as the tangent slab approximate...

Briefs : Aerospace
Flap Edge Noise Reduction Fins

NASA’s Langley Research Center has developed aircraft flap tip modifications that reduce noise produced during approach and landing. The modifications are rigid open lattice (honeycomblike) and fin structures...

Briefs : Aerospace
Separation Assurance Framework for ACES Simulation

National Airspace (NAS)-wide simulations provide modeling to emulate tens of thousands of flights for full days of traffic in the U.S. They allow system-level research to be conducted for the simulated airspace, and are currently being used by NASA, FAA, and industry to study interactions,...

Technology Leaders

Tech Briefs TV

`