Robotics, Automation & Control

The Sample Capture Mechanism (SCM) is a remotely actuated, spring-driven mechanism designed to remotely capture and seal a 15-mL sample in less than 1 second. It was used to capture a 10-g sample of simulated regolith dispensed from a drill in a...

Invasive surgical procedures are essential for addressing various medical conditions. When possible, minimally invasive procedures are preferred, but these technologies are often limited in scope and complexity. These limitations are due in part to mobility restrictions from the use of rigid tools in small...

NASA has developed a unique control algorithm and synthesis method that uses a system’s output to modify control inputs to cause the system to track a reference model or a fixed value in the presence of unmodeled system dynamics, varying operating environments, and unpredictable disturbances. The unique feature of this...

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...

During deposition of thin film layers using shadow masking techniques, thin film layer structure morphology changes with respect to the position of the thin film layer and the shadow of the mask. Morphology changes in the thin film result in refractive index and density changes that...

NASA has developed an innovative combination of a Magnetometer, low-powered ElectroMagnets, and Res onant Inductive Coupling (MEMRIC) to create and control relative positioning of nanosatellites within a cluster. This is a game-changing approach to enable distributed...

When updating attitude during arm motion, gyroscope propagation error soon becomes greater than the tilt being monitored. The solution is to add an accelerometer-only mode that can update attitude without using gyroscopes, and to add the ability to monitor pitch...

NASA’s Langley Research Center has developed a self-latching piezocomposite actuator. The self-latching nature of this invention allows for piezo actuators that do not require constant power draw. Among other applications, the invention is well suited for use in aerodynamic control surfaces and engine inlets....

NASA’s Marshall Space Flight Center engineers have developed a new reed valve for controlling fluid flow back and forth between two chambers. The VARR valve provides two-way flow that is proportional to flow demand. As the pressure gradient builds on one side, the reed valve responds by opening an amount...

Spacecraft thermal control systems typically perform three key functions — heat acquisition, heat transport, and heat rejection — in addition to those of insulation, heat generation, and heat storage. In a typical pumped fluid-loop spacecraft thermal control system, heat is acquired from...

Mass spectrometers on atmospheric entry probes require a method for introducing gas from high-pressure ambient regions to the vacuum of the mass spectrometer interior.

Satellite launches experience approximately one deployment failure every two years. These failures include a solar array or antenna that fails to deploy because it is stuck due to a mechanism failure, or is snagged by a cable or thermal blanket. Knowledge of the exact circumstances of the deployable failure...

Afixed geometry device has been developed to promote boundary layer transition and generation of streamwise vorticity, and is capable of withstanding entry heating environments for the Space Shuttle Orbiter. Designed to have a total height above the surface...