Briefs: Mechanical & Fluid Systems
Workspace-Safe Operation of a Force- or Impedance-Controlled Robot
Precise motion control of a robot by controlling its various robotic manipulators may be organized by the required level of task specification. The levels include object-level control, which describes the ability to control the behavior of an object held in a single or a...
Briefs: Mechanical & Fluid Systems
Cryogenic Mixing Pump with No Moving Parts
Refueling spacecraft in space offers tremendous benefits for increased payload capacity and reduced launch cost, but the problem of thermal stratification in long-term storage tanks presents a key challenge. To meet this challenge, a reliable, compact, lightweight, and efficient cryogenic mixing pump...
Briefs: Mechanical & Fluid Systems
Dexterous Humanoid Robot
A humanoid robot has been created that includes a torso, a pair of arms, a neck, and a head. The torso extends along a primary axis and presents a pair of shoulders. The pair of arms movably extends from the shoulders. Each of the arms is fully jointed. The neck movably extends from the torso along the primary axis, and...
Briefs: Mechanical & Fluid Systems
Tethered Vehicle Control and Tracking System
This innovation can control the flight of a tethered vehicle, in an airborne wind energy (AWE) generation system, through the use of a pan-tilt platform and a visible spectrum digital camera, combined with tracking and control software running on a standard PC.
Briefs: Mechanical & Fluid Systems
The device and method are used to quantify end-to-end latency of head- or helmet-mounted display with head tracking systems in a laboratory or in situ. All commercial or custom head-mounted...
Briefs: Mechanical & Fluid Systems
Seal Design Feature for Redundancy Verification
NASA has requirements for redundant seals to protect human-occupied cabin atmospheres, as well as fluid and gas systems in space vehicles exposed to the harsh environments. Comparable requirements have been passed down to the International Space Station (ISS) Program, and are now levied on the...
News: Software
Microsoft engineers have developed a new type of augmented mechanical keyboard, sensing rich and expressive motion gestures performed both on and directly above the device. A low-resolution...
Briefs: Mechanical & Fluid Systems
Sampling, sample handling, and sample transfer to lander platforms of in situ exploration missions involve great technical challenges. These challenges are even harder to address when the...
Briefs: Mechanical & Fluid Systems
Locking Orifice Retaining Nut
Fluid flow systems often require orifices to control pressure drop or flow rate. These orifices are often retained in bolted housings that require seals and introduce potential leak points into the system.
Briefs: Mechanical & Fluid Systems
Hybrid Mechanical Electrostatic Actuator for Deformable Mirrors
A hybrid mechanical/electrostatic force actuator has been developed for use in deformable mirror applications. Some deformable mirrors, designed to correct errors in optical systems, use electrostatic forces between the flexible mirror surface and a backplane to control the shape of...
Briefs: Mechanical & Fluid Systems
Improvements in brine water recovery are critical to advancing NASA’s goals for human exploration of space. Water recovery systems must minimize the need for new supplies of clean water by closing the water...
Briefs: Mechanical & Fluid Systems
This technique allows for rapid joining of reconfigurable structures. Currently, permanent structural joints are made in factory settings or in situ. However, reconfigurable structures require appropriate...
News: Medical
It can cost hundreds of dollars and days to scan biological materials for important biomarkers that signal diseases such as diabetes or cancer using industry standard equipment. Researchers face...
Briefs: Mechanical & Fluid Systems
Porous Media Jacket for Use in Regeneratively Cooled Rocket Engines
A paper describes a method for regeneratively cooling worst-case gas-phase thrusters using porous media integrated into a regenerative cooling jacket. The enhanced surface area in the jacket compensates for the much lower effective heat transfer coefficients of gases as compared...
Briefs: Mechanical & Fluid Systems
Acoustic Mechanical Feedthroughs for Producing Work Across a Structure
Electromagnetic motors can have problems when operating in extreme environments. In addition, if one needs to do mechanical work outside a structure, electrical feedthroughs are required to transport the electric power to drive the motor. Piezoelectric motors can be designed...
Briefs: Mechanical & Fluid Systems
Smart Core-Bit Probe (SCOPe) employs ruggedized MEMS-based sensors for real-time monitoring of sample core integrity (compositional or morphological changes) and drill health during sample acquisition. SCOPe...
Briefs: Mechanical & Fluid Systems
Special electrically conductive, failure-resistant rope/wire combinations are being developed for use as electrodynamic spacecraft tethers. These or similar combinations could also prove...
Briefs: Mechanical & Fluid Systems
ATHLETE Low-Gravity Testbed
A six-degrees-of-freedom (DOF) testbed was developed for evaluating microgravity and low-gravity proximity and contact operations, e.g. in the vicinity of a near Earth orbit, for simulation of proximity operations for a human mission to an asteroid. This is accomplished using an “inverted Stewart platform” where...
News: Mechanical & Fluid Systems
A new optical device puts the power to detect eye disease in the palm of a hand. The tool — about the size of a handheld video camera — scans a patient's entire retina in...
Briefs: Manufacturing & Prototyping
Opposed Pad Gecko Adhesive Gripper for On-Off Omnidirectional Anchoring/Gripping in Orbit
The idea of turning the stickiness of a material on and off is not an intuitive concept, yet this is exactly how geckos run up walls at speeds greater than 1 m/s and cling to ceilings made of glass. Transitioning this capability to spacecraft would...
News: Mechanical & Fluid Systems
RMIT University researchers have developed the world's first liquid metal enabled pump, a revolutionary new microscale device with no mechanical parts. The unique design will enable...
Briefs: Robotics, Automation & Control
Metabolic Heat Regenerated Temperature Swing Adsorption
Two fundamental problems facing the development of a portable system to sustain life on extraterrestrial surfaces are (1) heat rejection and (2) rejection of metabolically produced CO2 to an environment with a ppCO2 of 0.4 to 0.9 kPa as is present on Mars. Portable...
Briefs: Robotics, Automation & Control
Re-entry Vehicle Shape for Enhanced Performance
A vehicle entering the atmosphere of a planet will do so at hypersonic speeds and will need to decelerate and maneuver through that atmosphere while protecting its payload from excessive heating. As a consequence, the vehicle shape must be designed to provide optimal aerodynamic lift and drag...
Briefs: Robotics, Automation & Control
The antenna is composed of two main deployable structural components that help it achieve the large packing factor necessary to fit within the small volume of the CubeSat. The primary component of...
Briefs: Mechanical & Fluid Systems
A metallic sleeve provides protection and guidance for the actuating lanyard pull of a parachute system reefing line cutter. This device ensures that the reefing line cutter is not damaged...
Briefs: Mechanical & Fluid Systems
To achieve power of 250 kW or greater, a large compression ratio of stowed-to-deployed area is needed. Origami folding patterns were used to inspire the folding of a solar array to achieve...
Briefs: Mechanical & Fluid Systems
NASA’s Constellation Architecture Team defined an outpost scenario optimized for intensive mobility that uses small, highly mobile pressurized rovers supported by portable habitat...
Briefs: Mechanical & Fluid Systems
Most automotive fuel systems use a Fuel Delivery Module (FDM) with components to filter and pump gasoline at a specified pressure and flow rate from the fuel tank to the engine. The FDM uses a...
Briefs: Robotics, Automation & Control
The LVDT linear position sensor can operate successfully over a wide range of temperatures, depending upon its design and the application in which it is operating. While...
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