Engineering topics

Kenny, T.

Publications and source records attributed to Kenny, T..

7 records

NASA NTRS1995

Fabricating Sub-collimating Grids for an X-ray Solar Imaging Spectrometer using LIGA Techniques

This paper describes fabrication of sub-collimating X-ray grids that are used in an instrument for the High Energy Solar Spectroscopic Imager ( HESSI ), a proposed NASA mission that will promote understanding of solar particle acceleration and explosive energy release in the magnetized plasmas at the Sun. The HESSI comprises 12 rotating pairs of high-aspect-ratio, high-Z grids; each pair is separated by 1.7 meters and backed by a single Ge detector.

x-ray↗

NASA NTRS1994

Wide-Bandwidth Electro-Mechanical Actuators for Tunneling Displacement Transducers

A series of displacement transducers have been demonstrated which are based on the detection of electrons that quantum-mechanically tunnel across a narrow gap between electrodes.

displacement transducers electrons that quantum-me↗

NASA NTRS1994

Capacitive Edge Sensor Design for Selene Segmented Primary Mirror

The objective of this project is to produce a proof-of-concept demonstration of an edge sensor for the Space Laser Energy (SELENE) program. In the SELENE telescope, the primary mirror design sonsists of more than 200,000 segments which must be precisely aligned to correct for distortions in the optical train

SELENE↗

NASA NTRS1993

A Miniature High-Sensitivity Braodband Accelerometer Based on Electron Tunneling Transducers

This paper describes the successful fabrication and demonstration of a new dual-element micromachined silicon tunnel accelerometer that extends the operational bandwidth beyond the resonant frequency of the proof mass.

microsensors miniature accelerometers↗

NASA NTRS1993

A Miniature High-Sensitivity Broadband Accelerometer Based on Electron Tunneling Transducers

This paper describes the design of miniature accelerometers and new high-sensitivity microsensors developed using high-resolution position sensors based on electron tunneling.

microsensors electron tunneling↗

NASA NTRS1993

Fabrication and Characterization of a Micromachined Deformable Mirror for Adaptive Optics Applications

This paper describes how a micromachined, electrostatically controlled, and capacitively sensed deformable membrane mirror would meet the needs for active and adaptive optical elements.

micromachined↗

NASA NTRS1993

Modulation Collimator Fine Grids for HESP

The proposed High Engergy-Solar Physics (HESP) million will require fine, precise, high aspect ratio modulation collimators for the High Energy Imagin Spectrometer (HEISPEC). The fabrication approach described here rests on the proven precision of semiconductor lithography - the ability to replicate extremely accurate patterns onto different planar substrateds.

LIGA HESP pitch structures solar x-rays gamma rays↗