Mechanical Components

Vibration Ring

John H. Glenn Research Center, Cleveland, Ohio Machine vibration often originates with rotating driveline components such as rotors, gears, bearings, and fans. Such vibration is the source of unwanted noise and can be destructive to the machine. The vibration ring is a mechanism that provides an indirect damping effect, and is rigid enough to be mounted within the driveline. The mechanical structure of the vibration ring responds to vibratory excitation by stressing an embedded piezoelectric material. The material generates an electric charge, which is dissipated though an electric circuit. The net result is a reduction of vibration energy.

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Locomotion of Amorphous Surface Robots

These robotic locomotion concepts could replace legs, tracks, and wheels. Langley Research Center, Hampton, Virginia The proposed techniques rely on three principal concepts: (1) controlling the polarity of electromagnets, (2) circulating fluid through a compartmentalized bladder, and (3) expanding and deflating polymers. These designs would allow amorphous robots to move across a surface without conventional wheels or legs. The advantages of amorphous robots would be many, including greater mobility, passive shape changing to allow the robot to pass through odd-shaped openings, and immunity to dust and contamination. This idea is completely scalable from small to enormous robots.

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Fluid Disconnect Cooling Technique

The technique determines if temperature is causing leakage through the disconnect. John F. Kennedy Space Center, Florida The purpose of this innovation is to simulate the space temperature environment onto a fluid disconnect. This environment is to be maintained for a long period of time (48 hours) at a controlled temperature [6 ±2 °F(≈–14.4 ±1.1 °C)] to determine if temperature is causing leakage through the disconnect.

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Designing Reliable Robots for Moon Exploration

Simulation plays a key role in developing robots to explore the Moon. Astrobotic Technology, Inc., Pittsburgh, Pennsylvania Equipment for space exploration is almost impossible to test on Earth. Testing is expensive and cannot replicate the conditions of launch, cruise, landing, and travel across a planetary surface. As space exploration shifts to the private sector, Astrobotic Technology, Inc. is taking the lead in delivering affordable robotic technology. The company uses ANSYS technology to stay competitive, virtually testing its lunar robots on time and under budget.

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Composite Sports Car Body Design

KTM Technologies quickly and reliably designs a composite sports car using ANSYS technology. KTM Technologies GmbH, Salzburg, Austria The use of composites is rapidly growing across many industries, fostering the need for new design, analysis, and optimization technologies. Every industry feels increasing pressure to launch breakthrough products that outperform competitors and meet market needs. For many design applications that require strong, yet lightweight materials, layered composites are ideal. Even so, faster, more frequent product introductions and new technologies cannot compromise ultimate product quality, reliability, and speed to market.

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Development of an Analytical Parameterized Linear Lateral Dynamic Model for an Aerobot Airship

The method relies on the use of aircraft stability derivative methods with the basic geometric and aerodynamic properties of the airship. NASA’s Jet Propulsion Laboratory, Pasadena, California Saturn’s moon Titan is of high interest for in situ study due to its many intriguing features. This moon has a dense atmosphere; rough, icy terrain; and low surface winds that make it the ideal place to send a controlled aerial robotic platform, such as a conceptual Aerobot Airship. An important feature of a self-propelled, lighter-than-air aerial vehicle is that it must be autonomously controlled to navigate and avoid obstacles because of a 2.6-hour communication delay between the Earth and Titan. Developing a dynamic model that can be tuned will enable robust and reliable control of the Aerobot Airship.

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Algorithm Enhancements to Powered Descent Guidance Software

The solutions guarantee minimum fuel usage, satisfaction of position constraints, and adherence to thrust magnitudes that are within physical minimum and maximum limits. NASA’s Jet Propulsion Laboratory, Pasadena, California The Powered Descent Guidance (PDG) software provides a computationally efficient guidance algorithm for powered descent that ensures satisfaction of the governing dynamics, along with adherence to physical control and state constraints, such as avoid the surface, limit thrust magnitude and pointing, and divert based on available fuel. The software can generate guidance profiles for precision landing (or pinpoint landing when feasible) and also incorporate smart diverts to avoid the backshell landing corridor.

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