Keyword: Wheels

Briefs: Mechanical & Fluid Systems
A catalytic reaction causes a two-dimensional, chemically coated sheet to spontaneously morph into a three-dimensional gear.
Briefs: Mechanical & Fluid Systems
Researchers have developed a self-contained wheel unit that combines a wheel and an electric motor.
Application Briefs: Materials

For wheelchair users, the feeling of uneven ground can seem all too familiar. Determined to make ride discomfort a thing of the past, Israel-based SoftWheel has completely reinvented the wheel for a...

Briefs: Motion Control

Technology was developed that not only allows wheels to “know” when and how to rotate, but also enables them to work together in interactive teams. The new technology can be used wherever there is a need for...

Briefs: Mechanical & Fluid Systems

Researchers have developed an innovative design for a wheelchair that can more easily navigate on soft and uneven outdoor terrain such as grass and gravel. The chair uses three wheels — two wheels in the front...

Briefs: Robotics, Automation & Control

Actuators are a critical driver of all the mechanisms used in space, and improvements of their operation mechanism enhance mission...

Briefs: Robotics, Automation & Control

An industrial-class excavator was developed for use on the Moon and perhaps on Mars. The model mobility platform uses Ackerman Steering with active drives on all six...

Briefs: Robotics, Automation & Control

Researchers at NASA's Jet Propulsion Laboratory (JPL) were inspired by origami when they developed the Pop-Up Flat Folding Explorer Robot (PUFFER). Its lightweight design — which can hitch a ride...

Briefs: Motion Control

Actuators are a critical driver of all the mechanisms used in space, and improvements of their operation mechanism...

Application Briefs: Motion Control

Shock absorbers are important parts of vehicles. The shock absorber is used to observe the vibrations from shock loads due to irregularities of the road surface, and operates without affecting the...

Briefs: Mechanical & Fluid Systems

NASA Glenn researchers have developed a spoked drive mechanism for robots and other vehicles that is capable of two rotational modes. This robust ground traction (drive) assembly for remotely controlled vehicles...

Briefs: Robotics, Automation & Control

Because of the cost-effectiveness of flying smallsats compared to large flagship spacecraft, there is increasing interest in boosting their capabilities for...

Briefs: Aerospace

Airframe noise, produced by unsteady flow around aircraft structures, is an important source of aircraft noise during approach and landing. Sound radiating from the undercarriage is a major...

Briefs: Mechanical & Fluid Systems

A novel, miniature, low-mass vehicle has been created that is driven by piezoelectric stacks and a resonance structure. Preliminary tests on similar mechanisms that are used to transmit...

Briefs: Photonics/Optics

Optical indexing wheels, sometimes called “filter wheels,” are used to locate various optics or filters in a beam path to change the observational mode. Large wheels a half-meter in size...

Briefs: Robotics, Automation & Control
DshellCommon Simulation Framework

DshellCommon software has been developed for specifying and executing generic multibody system simulations. This innovation helps the user create and execute simulations for mechanisms, vehicles, spacecraft, or other systems by making it easier to write simulation “run scripts” for systems that vary from...

Briefs: Data Acquisition

The MAI-400SS Space Sextant is a turnkey Attitude Determination And Control System (ADACS) for CubeSats and nanosatellites. It is an enhanced version of the MAI-400, which is a...

Briefs: Motion Control

A sampling device and a deployment method were developed that allow collection of a predefined sample volume from up to a predefined depth, precise sampling site selection, and...

Application Briefs: Robotics, Automation & Control

The important job of a farmer requires long hours of field work. The often monotonous tasks of driving agricultural vehicles to work long rows in the field — whether it...

Briefs: Mechanical & Fluid Systems

Mobility for small, man-portable reconnaissance robots in the past has been limited with regard to obstacles like curbs, stairs, and vertical walls. A previous innovation overcame these obstacles by introducing...

Articles: Robotics, Automation & Control

The Multi-segmented Magnetic Ro bot (MSMR) project addresses a capability gap in the intelligence, surveillance, and reconnaissance needs of the U.S. Navy visit, board, search, and seizure...

Briefs: Motion Control
Sliding Gait for ATHLETE Mobility

ATHLETE (All-Terrain Hex-Limbed Extra-Terrestrial Explorer) is a multipurpose mobility platform for planetary surfaces. It is a cross between a wheeled rover and a walking robot, and travels using powered wheels mounted on the end of each of six robotic limbs. Each limb is a fully articulated robotic manipulator...

Briefs: Information Technology
Estimating the Backup Reaction Wheel Orientation Using Reaction Wheel Spin Rates Flight Telemetry from a Spacecraft

A report describes a model that estimates the orientation of the backup reaction wheel using the reaction wheel spin rates telemetry from a spacecraft. Attitude control via the reaction wheel assembly (RWA) onboard a spacecraft...

Briefs: Mechanical & Fluid Systems
Mars Technology Rover with Arm-Mounted Percussive Coring Tool, Microimager, and Sample-Handling Encapsulation Containerization Subsystem

A report describes the PLuto (programmable logic) Mars Technology Rover, a mid-sized FIDO (field integrated design and operations) class rover with six fully drivable and steerable cleated wheels, a...

Briefs: Software
Pandora Operation and Analysis Software

Pandora Operation and Analysis Software controls the Pandora Sun- and sky-pointing optical head and built-in filter wheels (neutral density, UV bandpass, polarization filters, and opaque). The software also controls the attached spectrometer exposure time and thermoelectric cooler to maintain the...

Briefs: Mechanical & Fluid Systems

To be able to conduct science investigations on highly sloped and challenging terrains, it is necessary to deploy science payloads to such locations and collect and process in...

Briefs: Information Technology
Planning the FUSE Mission Using the SOVA Algorithm

Three documents discuss the Sustainable Objective Valuation and Attainability (SOVA) algorithm and software as used to plan tasks (principally, scientific observations and associated maneuvers) for the Far Ultraviolet Spectroscopic Explorer (FUSE) satellite. SOVA is a means of managing risk in a...

Briefs: Information Technology
Surface Contact Model for Comets and Asteroids

A contact force model was developed for use in touch and go (TAG) surface sampling simulations on small celestial bodies such as comets and asteroids. In TAG scenarios, a spacecraft descending toward the surface of a small body comes into contact with the surface for a short duration of time,...

Briefs: Mechanical & Fluid Systems

Sampling cores requires the controlled breakoff of the core at a known location with respect to the drill end. An additional problem is designing a mechanism that can be implemented at a...