A5091205231- Space Satellite Systems and Control
- Spacecraft Design and Technology
- Astro and Planetary Science
- Virus-based gene therapy research
- Satellite Communication Systems
- Groundwater flow and contamination studies
- Herpesvirus Infections and Treatments
- Spacecraft Dynamics and Control
- Service and Product Innovation
- Ionosphere and magnetosphere dynamics
- Geophysical and Geoelectrical Methods
- AI in Service Interactions
- Planetary Science and Exploration
- CAR-T cell therapy research
- Viral Infectious Diseases and Gene Expression in Insects
- Cytomegalovirus and herpesvirus research
- Cancer Research and Treatments
- Geothermal Energy Systems and Applications
- Aerospace Engineering and Energy Systems
- Neutrino Physics Research
- Scientific Research and Discoveries
- Space Science and Extraterrestrial Life
- Petroleum Processing and Analysis
- Architecture and Cultural Influences
- Reliability and Maintenance Optimization
Cranfield University
2007-2021
Centrum Badań Kosmicznych
2014
Arizona State University
2007
Keiai University
1993
University of Edinburgh
1993
A Product-Service System (PSS) is an integrated combination of products and services. This Western concept embraces a service-led competitive strategy, environmental sustainability, the basis to differentiate from competitors who simply offer lower priced products. paper aims report state-of-the-art PSS research by presenting clinical review literature currently available on this topic. The classified major outcomes each study are addressed analysed. On basis, defines concept, reports its...
Purpose The purpose of this paper is to present challenges experienced by UK manufacturing companies undergoing a servitization journey becoming product‐service providers. Design/methodology/approach uses an exploratory single‐case study approach based on semi‐structured interviews, and archival data. A total 22 senior managers were interviewed from the provider its two suppliers, resulting in more than 400 pages interview Data analysed through inductive research analysis emergent...
In situ thermal‐based soil and aquifer remediation technologies (e.g., electrical resistance heating [ERH], conductive heating, steam‐based heating) have undergone rapid development application in recent years. These thermal offer the promise of more thorough treatment nonaqueous phase liquid (NAPL) source zones; however, their field‐scale has not been well documented technical literature. A state‐of‐the‐practice review these was conducted this study. Available documents from 182...
Earth observation spacecraft use sun-synchronous orbits because they enable observations of ground targets with similar illumination conditions over different passes. To achieve these orbits, shall be orbiting the at a particular inclination, which is function altitude. In low-Earth-orbit range, experience aerodynamic drag, makes orbit decay while inclination remains unchanged, hence loosing aspect if no corrective measures are taken. A novel method proposed whereby maintained, using lift,...
Abstract Recent work by Tsitas and Kingston (1) has demonstrated that an 8kg 6U CubeSat can be designed to perform Earth observation missions equivalent those of 50-150kg microsatellites. Their design is reviewed its commercial potential compared the 156kg RapidEye spacecraft. Three other applications this are described. These are: a standard spacecraft for space scientists astronomers; component N nation 5 spectral band disaster monitoring constellation night imaging satellite....
Following a business as usual scenario, some Low Earth Orbit (LEO) regions could be unusable for many decades because of the space debris growth. In order to reduce that trend, current probability success chosen End Mission (EOM) disposal method shall ensure target value 90% [1]. Understanding reliability satellites and their subsystems different spacecraft classes allows determining which solution better fit with particular mission. However, are quite often from each other, so statistical...
A recent study assessing the state‐of‐the‐practice of in situ thermal remediation technologies (e.g., electrical resistive heating [ERH], conductive heating, steam‐based large‐diameter auger soil mixing with steam/hot air injection, and radio‐frequency heating) identified 182 applications 1988 to 2007 period summarized geologic settings which these were applied, chemicals treated, design parameters, operating conditions. That concluded that documentation for less than 8% those contained...
Abstract The broad physics reach of the LUX-ZEPLIN (LZ) experiment covers rare phenomena beyond direct detection dark matter. We report precise measurements extremely decay 124 Xe through process two-neutrino double electron capture, utilizing a 1.39 kg × yr isotopic exposure from first LZ science run. A half-life <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msubsup> <mml:mi>T</mml:mi> <mml:mrow> <mml:mn>1</mml:mn> <mml:mo>/</mml:mo> <mml:mn>2</mml:mn>...
Abstract The design of a 6U CubeSat including spacecraft systems and imaging payload is described for an Earth observation mission. From Sun synchronous orbit at altitude 600km the enables with 6.5m GSD, optical MTF (on axis) >59% half Nyquist >35% Nyquist, 26km swath, 12 bit digitisation SNR 120-200:one in five spectral bands; blue, green, red, red edge near infrared. Data can be downlinked rate 14 Mbps to 3.7m S band ground station. This allows 8kg perform missions equivalent those...
Propulsion-based de-orbit is a space-proven technology; however, this strategy can strongly limit operational lifetime, as fuel mass dedicated to the de-orbiting. In addition previous reliability studies have identified propulsion subsystem one of major contributors driving satellite failures. This issue brings need develop affordable technologies with limited reliance on system level performance host satellite, ideally largely passive methods. Passive disposal strategies which take...
Space engineering students and academics from Cranfield University have developed two space debris mitigation drag sail concepts three sails are currently in orbit. The enable a reduced time to atmospheric re-entry by increasing the natural aerodynamic forces acting on host satellite. Intended be used small, low Earth orbit satellites, these provide low-cost solution achieving compliance with IADC target of removal within 25 years end-of-mission. LEOniDAS team, comprising one PhD MSc...
Geosynchronous synthetic aperture radar (GEO SAR) promises novel imaging capabilities which complement low Earth orbit missions. Many configurations for GEO SAR have been studied (e.g. monostatic, bistatic, multistatic): this study considers use of Laplace plane orbits potentially offer longer lifetimes. In the gravitational perturbations cancel out reduces maintenance costs. Choosing a defines semimajor axis, inclination (about 7.4°.) and right ascension: mission designer is only free to...