Keyword: Helicopters

Articles: Sensors/Data Acquisition
Tech Briefs spoke with NASA’s Keith Comeaux, Deputy Project Chief Engineer, to learn more about the helicopter heading to Mars.
Articles: Aerospace
Moghbeli has accumulated more than 150 combat missions and 2,000 hours of flight time in more than 25 different aircraft.
Briefs: Nanotechnology

By mimicking the outer coating of pearls (nacre or mother of pearl), researchers created a lightweight plastic that is 14 times stronger and eight times lighter (less dense) than steel. It could...

Briefs: Test & Measurement
Exhaust Plume Analyzer

Exhaust plumes emanating from smoke stacks at power plants or other industrial facilities can have adverse impacts on local aviation during periods of calm winds. Adverse impacts can be exacerbated if the temperature is low or the atmosphere is unstable. While low oxygen concentrations and elevated temperatures inside the...

Briefs: Photonics/Optics
Power Line Detection System for Unmanned Aircraft Systems

Electrical power lines pose a serious crash hazard to helicopters and other air-based vehicles, especially small aerial vehicles such as unmanned aircraft systems (UAS). This is because power lines are so widespread, hard to see, and strung at roughly the same height above the ground at...

Briefs: Aerospace

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

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: Photonics/Optics

In recent years, a host of Hollywood blockbusters, including “The Fast and the Furious 7,” “Jurassic World,” and “The Wolf of Wall Street,” have included aerial tracking shots provided by drone...

NASA Spinoff: Sensors/Data Acquisition

Spinoff is NASA's annual publication featuring successfully commercialized NASA technology. This commercialization has contributed to the development of products and services in...

Briefs: Aerospace

Some unmanned aircraft designs attempt to combine the vertical takeoff and landing (VTOL) and hover capabilities of a helicopter with the increased speed and range capabilities of fixed-wing airplanes....

Briefs: Robotics, Automation & Control

Multi-robot systems deployed in real-world applications are exposed to the same issues that computer systems face. A cybersecurity attack on a robot has the consequences of an attack on a...

Briefs: Robotics, Automation & Control

There are instances when items (e.g., supplies) need to be lowered from an aerial vehicle to the ground. For example, the United States military often lowers supplies from a rotary winged aircraft...

Briefs: Manufacturing & Prototyping

NASA’s Langley Research Center has developed a portable device to simulate low-velocity impacts on a material or structure. As composite materials are highly susceptible to damage caused by low-velocity impact, they...

Briefs: Aerospace

NASA’s Langley Research Center has developed a novel design for a lightweight energy absorbing (EA) composite subfloor structure. The technology’s primary application is to increase occupant survivability in...

Briefs: Electronics & Computers

NASA’s Kennedy Space Center is seeking commercial partners for licensing or further development of a novel high-performance, flexible, low-melt polyimide film with self-healing properties. The self-healing...

Briefs: Robotics, Automation & Control
Probabilistic Surface Characterization for Safe Landing Hazard Detection and Avoidance (HDA)

NASA’s Jet Propulsion Laboratory (JPL) has developed a probabilistic algorithm for hazard detection and avoidance (HDA) that robustly handles sensor noise. Conventional surface characterization methods use fixed hazard thresholds to determine hazardous...

Briefs: Mechanical & Fluid Systems
Rocket Sled Parachute Design Verification

Historically, parachutes have been load-tested by various methods including release from an aircraft, deploying in a wind tunnel, dragging through water, and shooting out of an air cannon. Each type of testing has its own advantages and drawbacks. Due to the loading mechanics particular to parachutes...

Briefs: Robotics, Automation & Control
Autonomous Micro Aerial Vehicle Flight Using Optical Flow and Inertial Cues

Micro aerial vehicles (MAVs) are agile and have unstable flight dynamics. They require a failsafe method to be navigated through areas even without GPS coverage. The approach of this work is to use only the feature matches between two consecutive images, i.e. optical...

Briefs: Imaging
Normalized Cross Correlation FPGA Implementation

A safe and precise landing system for Mars will match features seen in descent imagery against a map constructed from orbital imagery. The spacecraft attitude and altitude are known, but lateral position is known only poorly. From attitude and altitude, one can generate a mapping (homography) that...

Articles: Imaging

Let’s say you’re a prospective buyer touring an older home that you suspect has some weatherization issues. What if you could verify your hunch by literally seeing cold air seeping under doors...

Application Briefs: Sensors/Data Acquisition
Data acquisition system
DTS (Diversified Technical Systems)
Seal Beach, CA
562-493-0158
www.dtsweb.com

Aircraft impact testing and hard landing...

Who's Who: Aerospace

Bob Reisse coordinates the design and testing of ALHAT (Autonomous Landing Hazard Avoidance Technology) sensors. In December, ALHAT instruments were melded to HUEY...

Briefs: Physical Sciences
Detecting Methane From Leaking Pipelines and as Greenhouse Gas in the Atmosphere

Laser remote sensing measurements of trace gases from orbit can provide unprecedented information about important planetary science and answer critical questions about planetary atmospheres. Methane (CH4) is the second most important anthropogenically...

Briefs: Physical Sciences
Airborne Hyperspectral Imaging System

A document discusses a hyperspectral imaging instrument package designed to be carried aboard a helicopter. It was developed to map the depths of Greenland’s supraglacial lakes. The instrument is capable of telescoping to twice its original length, allowing it to be retracted with the door closed during...

Application Briefs: Lighting

Covert lighting on military aircraft is increasingly being implemented on existing airframes to create a compatible environment for pilots using night vision goggles during flight. This retrofitting procedure...

Articles: Aerospace

This Friday, the Space Shuttle program is scheduled to launch its final flight. But as the shuttle era ends, new space vehicles continue to be developed -- even those that are not so new.

Briefs: Software
GOATS Image Projection Component

When doing mission analysis and design of an imaging system in orbit around the Earth, answering the fundamental question of imaging performance requires an understanding of the image products that will be produced by the imaging system. At the highest level, this understanding can be gained by a first-principles...

Briefs: Mechanical & Fluid Systems
Plasma Igniter for Reliable Ignition of Combustion in Rocket Engines

A plasma igniter has been developed for initiating combustion in liquid-propellant rocket engines. The device propels a hot, dense plasma jet, consisting of elemental fluorine and fluorine compounds, into the combustion chamber to ignite the cold propellant mixture. The igniter...

Briefs: Information Technology
Reactive Collision Avoidance Algorithm

The reactive collision avoidance (RCA) algorithm allows a spacecraft to find a fuel-optimal trajectory for avoiding an arbitrary number of colliding spacecraft in real time while accounting for acceleration limits. In addition to spacecraft, the technology can be used for vehicles that can accelerate in any...