Advancements in satellite technologies are increasing the power density of electronics and payloads. When consumption increases within a limited volume, waste heat generation also this necessitates proper efficient thermal management system. Mostly, micro nanosatellites use passive control methods because low cost, no additional requirement, ease implementation, better performance. Passive lack...

Anderson, et al. have recently reported the discovery of an apparent anomalous, weak, long-range acceleration in the Pioneer 10/11 and Ulysses spacecraft. I believe that this result can be explained by non-isotropic radiative cooling of the spacecraft electronics through passive radiators on the spacecraft surface. These radiators are preferentially placed on the anti-solar side of the spacecra...

this: Light from a lamp of known spectral distribution is modified by rotatory dispersion in a system of quartz plates and nicol prisms in such a way that by rotating one of the nicols the light emerging from it can be made to assume the spectral distribution of a Planckian radiator at any desired temperatrue between 4000 and 7000° K. Such a system is, in effect, a selective light filter of adj...

Radiator arrays with Dynamic Polarization Control (DPC) and 2D beam steering enable polarization matching to the receiver antenna regardless of its polarization, orientation, and location. A fully integrated 122.9 GHz 2x2 DPC multi-port driven phased array radiates all linear polarizations (0°-180° polarization angles) with axial ratios above 14 dB, and controls the axial ratio from 1.2 dB (cir...

A Transition Radiation Detector to identify electrons at 90% ef-ciency with a rejection factor against pions of 10 3 on an area of 2:85 2:85 m 2 has been constructed for the NOMAD experiment. Each of its 9 modules includes a 315 plastic foil radiator and a detector plane of 176 vertical straw tubes lled with a xenon-methane gas mixture. Details of the design, construction and operation of the d...

ISSN 2277 – 5056 | © 2012 Bonfring Abstract--General opinion for the cause of overheating in the engine is scarcity of water in the radiator which causes the engine to seize. Normally refilling the radiators would solve the problem but we have several proven cases where engines still seize due to loosening of belts. Though the current technology allows detection of engine temperature, there is ...

In this article, construction, operation, and performance of the RICH detector of Fermilab experiment 781 (SELEX) are described. The detector utilizes a matrix of 2848 phototubes for the photocathode to detect Cherenkov photons generated in a 10m Neon radiator. For the central region an N0 of 104 cm , corresponding to 13.6 hits on a β = 1 ring, was obtained. The ring radius resolution measured ...