The Caging System for Drag Free Satellites was tested on each of four parabolic flights during a NASA Flight Opportunities Campaign in April 2013 at Ellingont Field, Houston, TX.
The Differential Optical Shadow Sensor (DOSS) is a sensor for measuring the position of a spherical test mass relative to a given reference system (housing). The major difference between the Shadow Sensor and an interferometric measurement is that the measurement for the Shadow Sensor is at the intensity level. That means, that there is no necessity for a coherent light source. The dynamic range of the shadow sensor is large as compared to an interferometric sensor.
Precise control over the potential of an electrically isolated proof mass is critical for many devices, such as the MGRS. During flight, direct charging and secondary electron emission can lead to a charge imbalance between the proof mass and housing, leading to electrostatic forcing. The UV LED project aims to develop a full non-contact charge control system using AlGaN UV LEDs operating at 255 nm.
In cooperation with NASA Ames and KACST a series of small satellites is developed to demonstrate and test core technologies for science missions like LAGRANGE or LISA.
STAR Scientific Overview
STAR will test Special Relativity (SR) by searching for violations of Lorentz invariance that would affect the behavior of matter and the propagation of light through space-time. This search supports the NASA science goals of the 2010 Science Plan for the SMD: “How do matter, energy, space, and time behave under the extraordinarily diverse conditions of the cosmos?” and: “Discover how the Universe works, explore how the Universe began and evolved…”
LAGRANGE: LAser GRavitational-wave ANtenna at GEo-lunar Lagrange points