Results 141 to 150 of about 404,121 (431)
AttoSats: ChipSats, other Gram-Scale Spacecraft, and Beyond [PDF]
arXiv, 2019 The miniaturization of electronic and mechanical components has allowed for an unprecedented downscaling of spacecraft size and mass. Today, spacecraft with a mass between 1 to 10 grams, AttoSats, have been developed and operated in space. Due to their small size, they introduce a new paradigm in spacecraft design, relying on agile development, rapid ...
arxiv
, 1974 A turnstile slot antenna is disclosed, the antenna being for and integral with a spacecraft having a substantially cylindrical body portion. The antenna comprises a circumferential slot about the periphery of the spacecraft body portion with an annular ...
Munson, R. E.
core +1 more source
Relativistic analysis of the LISA long range optical links
, 2005 The joint ESA/NASA LISA mission consists in three spacecraft on heliocentric orbits, flying in a triangular formation of 5 Mkm each side, linked by infrared optical beams.
Bertrand Chauvineau +7 more
core +3 more sources
Transmission of Sound and Vibration to a Shroud-Enclosed Spacecraft [PDF]
, 1966 Jerome E. Manning +2 more
openalex +1 more source
Risk, Hazards &Crisis in Public Policy, EarlyView.Abstract Near‐earth orbits are becoming congested because of a rapid growth in the number of satellites and space debris, which presents a real threat to the sustainable use of space and the safety of the Earth. Despite space scientists and public policymakers having been actively seeking solutions for decades, solving the problem has been put off ...
Anna Ya Ni +2 more
wiley +1 more source
Structure Modeling Activation Free Fourier Network for Spacecraft Image Denoising [PDF]
arXivSpacecraft image denoising is a crucial fundamental technology closely related to aerospace research. However, the existing deep learning-based image denoising methods are primarily designed for natural image and fail to adequately consider the characteristics of spacecraft image(e.g.
arxiv
Numerical Calculation of Gas–Liquid Two-Phase Flow in Tesla Valve
AerospaceIn this paper, the gas–liquid two-phase flow within a Tesla valve under zero-gravity conditions is numerically studied. Based on the VOF model and the inlet two-phase separation method, the forward and reverse flow patterns and pressure drop changes in a
Jie Gong +3 more
doaj +1 more source
Salient Region-Guided Spacecraft Image Arbitrary-Scale Super-Resolution Network [PDF]
arXivSpacecraft image super-resolution seeks to enhance low-resolution spacecraft images into high-resolution ones. Although existing arbitrary-scale super-resolution methods perform well on general images, they tend to overlook the difference in features between the spacecraft core region and the large black space background, introducing irrelevant noise ...
arxiv
Astronaut hazard during free-flight polar EVA [PDF]
, 1985 Extravehicular Activity (EVA) during Shuttle flights planned for the late 1980's includes several factors which together may constitute an astronaut hazard. Free-flight EVA is planned whereas prior United States Earth orbit EVA has used umbilical tethers
Hall, W. N.
core +1 more source
Spacecraft and Instrumentation
, 2016 The new scientific work in this thesis stems from data gathered and returned to Earth by the Cassini-Huygens spacecraft. Onboard the spacecraft is a suite of in situ instruments making field, particle and wave measurements for studying dust, plasma and magnetic fields around Saturn. There are also suites of optical remote sensing instruments (e.g.
openaire +2 more sources