Systems Engineering and Assessment , Ltd.

Frome, United Kingdom

Systems Engineering and Assessment , Ltd.

Frome, United Kingdom
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Tejal T.,Space Generation Advisory Council | Bacon A.,Systems Engineering and Assessment , Ltd.
62nd International Astronautical Congress 2011, IAC 2011 | Year: 2011

Human and Environmental security from space activities is one of the most current critical topics discussed globally. The threats we face such as climate change, pollution, water scarcity, etc are not lightly to be taken. Dealing with these emerging issues is very critical and should be focused primarily however there are issues not so different from diese that also need a good amount of attention such as a Near Earth Objects threat. Along with the increase in the discovery of these objects, the threat they pose to the Earth has increased with it. The percentage of a NEO collision is same as the percentage of a person being hit by a bus. This fact makes this issue a very important one as from previous knowledge of collisions (example: Tunguska event), even a small asteroid can cause massive damage to humans as well as the environment. These damages are not constricted to a city or a small part of a country, some collisions have a potential to wipe an entire country off this planet or worse an entire civilization. Research is carried out regarding the issue of damages caused by these objects from previous event which will help create a strategy to help prevent such large damage. The initial strategy will depend on prediction of a collision by tracking and recording its movements. The prediction will also indicate a position of collision. With this information and timeframe of the collision, a pre-planned solution can be obtained. Along with strategy planning, the countries have a responsibility to evacuate and protect its citizens. This should be taken into consideration when taking decision regarding human damage and survival rates. Survival system for human and environment should be put in place to provide help on decisions during a small scaled asteroid or space debris collision. Constructed series of legal parameters in case of response and mitigation have been developed by the Association of Space Explorers but these parameters should be internationally accepted and establish with the Space Law Treaty. This research will develop a strategic plan with considering legal parameters from different previous collisions to help prevent and survive the next one. It will also look into a constructive way to approach the space agencies and industry to accept these strategies. Copyright ©2010 by the International Astronautical Federation. All rights reserved.


Grant
Agency: European Commission | Branch: FP7 | Program: JTI-CS | Phase: JTI-CS-2011-1-SAGE-03-007 | Award Amount: 596.05K | Year: 2012

This Project aims to support Rolls Royce in the design of a of high temperature flexible PCB and through trials of flexible laminates manufactured from existing and brand new advanced polymers progress the temperature at which a flexible printed circuit can operate from the current state of the art maximum of 200C into the desired range of 260C (minimum) up to 400C (target). The Project also aims to develop the materials and manufacturing processes that enable this high temperature performance in a large format, such that the required overall length of 5m can be implemented in a single piece multilayer printed circuit, without joints. Validation to TRL6 is to be achieved through coupon tests on representative hardware in a bespoke environmental chamber, subjecting the coupons to combined heat and random vibration loading, supported by full size PCBs integrated and tested at engine level.


Summers D.,Systems Engineering and Assessment , Ltd. | Clark M.,University of Nottingham | Stockford I.,University of Nottingham | Achamfuo-Yeboah S.,University of Nottingham | Pereira Do Carmo J.,European Space Agency
Acta Astronautica | Year: 2010

The modulated light camera technology, developed by the University of Nottingham, illuminates a target with modulated laser light and measures the distance to the target scene by the phase change of the return, across an imaging array. This enables the measurement of distance to different parts of the scene simultaneously, on a pixel by pixel basis. A prototype camera has been assembled under the ESA Innovation Triangle Initiative and supplied to SEA where there has been an assessment of the potential of this technology for a range of space applications, including Rover Vision, Rendezvous and Docking, and monitoring the deployment of large structures. The supplied device has been tested with appropriate modulation schemes. Finally, a roadmap has been devised to show the developments needed to take this test system forward to a fully fledged spaceborne instrument. © 2009 Elsevier Ltd. All rights reserved.


Kant G.W.,ASTRON | Patel P.D.,Systems Engineering and Assessment , Ltd. | Wijnholds S.J.,ASTRON | Ruiter M.,ASTRON | Van Der Wal E.,ASTRON
IEEE Transactions on Antennas and Propagation | Year: 2011

We present the design and development of the electronic multi-beam radio astronomy concept (EMBRACE), a demonstrator that is part of the European contribution towards the square kilometre array, which is currently being designed by the global radio astronomical community. One of the design goals of EMBRACE is to demonstrate the applicability of phased array technology for use in future radio telescopes. The EMBRACE system will ultimately consist of two stations, the largest of which comprises over 20,000 elements and has a physical area of about 160 m2. The antenna system, covering the 5001500 MHz frequency range, is designed as a dual polarized system, however only the signals for one polarization are processed. To obtain a cost effective design, RF analog beam-forming is performed on tile level close to the radiators. The demonstrator is designed to provide two independent beams such that different parts of the sky can be observed simultaneously. First results from part of the array are presented and discussed. The results show that the complete data path is functional. Since the design resembles a large regular contiguous array, all coupling can be taken into account in the embedded element patterns. The array factor therefore suffices to describe the scanning of the array reducing significantly calibration complexity compared to, e.g. sparse, random or more irregular arrays. This is confirmed by the first array factor measurements, that were done using a novel technique that does not require calibration of the array. The first measurements on an astronomical source, the Sun, indicate that the system noise temperature lies between 104 and 118 K, which is reassuringly close to the design target of 100 K. © 2011 IEEE.


Bridges J.C.,University of Leicester | Guest M.,Systems Engineering and Assessment , Ltd.
Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering | Year: 2011

Mars sample return (MSR) mission planning requires a high level of planetary protection in order to break the chain of contact between Mars and the terrestrial biosphere. As a focus of MSR is the search for life, it is also imperative that a minimal amount of terrestrial contamination is taken to Mars on the mission. For these reasons, spacecraft cleaning of up to Viking levels will be needed, adding to the cost and complexity of the mission. Experience gained in Mars missions in the USA and Europe including and after Viking will be used. New technologies such as sample sealing in Mars orbit are also required. The recent identification of special regions on Mars where liquid water may have been present within the recent geological past has led to a revision of planetary protection constraints for missions such as MSR which might wish to visit them. Approximately 500 g (five to eight samples) are envisaged in the first MSR within the 2020s. This requires a sample receiving facility to assess the threat to the terrestrial biosphere prior to analyses of the samples by the wider scientific community. This will be operated at biohazard level 4 - the highest level. Long-term curation of returned samples has planetary protection constraints but also challenges in maintaining the pristine nature of the samples as far as possible as they are moved from the oxidizing, reactive Mars surface to Earth.


Guest M.,Systems Engineering and Assessment , Ltd. | Chaloner C.,Systems Engineering and Assessment , Ltd.
61st International Astronautical Congress 2010, IAC 2010 | Year: 2010

A unique opportunity exists to host a set of Earth Radiation Budget (ERB) sensors on the Iridium NEXT (NEXT) LEO constellation in a cost effective manner to address WMO's recommendations. The NEXT constellation, with 66 interconnected satellites provides a unique platform for hosting Earth observation missions. Launches are planned to begin in 2014. The ERB both drives and responds to global climate and monitoring it can provide much insight into the climate system and how it might be changing. A climate quality measurement of the ERB requires high absolute accuracy and excellent stability and a long-term (decades) data record in order to inform the debate about global wanning. Measurement of the ERB in terms of the broadband reflected solar (0.3 to 4 m) and emitted thermal (4 to 200 m) components have been identified as high priority by the WMO for climate observations. High temporal resolution is the key advantage offerered by the NEXT platform and can provide a great step forward in accurately monitoring the energy balance of the planet. The proposed sensors consist of twelve broad band instruments and associated imager for scene identification and cloud classification. By placing two such sensors in each of six NEXT orbital planes can improve the product refresh time from currently 12 hours to 3 hours. The increased temporal resolution will allow direct measurement of the changes to the broadband radiances from rapidly varying components of the climate such as cloud and aerosol, lessening the need for narrow band sensors to infer such changes. As the prediction of cloud response to climate change is still a major source of uncertainty; improved measurement of the cloud effect and any variations are of particular interest. The proposed twelve ERB sensors solution on NEXT has been analyzed in a detailed study demonstrating real-time data delivery, full globe coverage with a swath of 1000 km and resolution of 10 km at nadir and 3 hourly temporal resolutions even at the equator at low cost. Additionally, as the NEXT orbits are not sun-synchronous, aliasing effects from a single sensor in sun-synchronous orbits, are no longer of concern. Twelve sensors with frequent near-coincidences at high latitudes make cross-calibration a normal part of the system operation. Cross-calibration will also be possible against current sensors such as CERES and GERB. System robustness and continuity is assured since loss of a sensor or satellite is not mission critical.


Grant
Agency: GTR | Branch: Innovate UK | Program: | Phase: Feasibility Study | Award Amount: 21.45K | Year: 2011

Abstracts are not currently available in GtR for all funded research. This is normally because the abstract was not required at the time of proposal submission, but may be because it included sensitive information such as personal details.


Grant
Agency: GTR | Branch: Innovate UK | Program: | Phase: Feasibility Study | Award Amount: 21.45K | Year: 2011

Abstracts are not currently available in GtR for all funded research. This is normally because the abstract was not required at the time of proposal submission, but may be because it included sensitive information such as personal details.


Grant
Agency: GTR | Branch: Innovate UK | Program: | Phase: Feasibility Study | Award Amount: 21.45K | Year: 2011

Abstracts are not currently available in GtR for all funded research. This is normally because the abstract was not required at the time of proposal submission, but may be because it included sensitive information such as personal details.


Grant
Agency: GTR | Branch: STFC | Program: | Phase: Research Grant | Award Amount: 9.95K | Year: 2014

The general project aims are: - Promote careers in space science and engineering to KS3 & KS4 students aged 11-16 with a particular focus on 15 year olds who are making choices about A levels; - To teach students about ongoing activities in the exploration of Mars and about the Mars surface environment; - To launch up to 200 unique student made Mars experiments to an altitude with conditions analogous to that at the Martian surface (30km altitude) and get them to analyse the results; - To publicly promote the launch and project aftermath to further spread the message, and to lay the foundations for a recurring national program. The expected overall impact includes: - Communicating the benefits of space science and engineering careers directly to students via the distributed material to encourage uptake of maths and science A-levels; - Engaging students with the concept of Mars science and exploration by tasking them to design experiments that will test the response of materials to a Mars like environment, or investigate the conditions found there; - Engaging students with the daily activities of space scientists and engineers to get them to consider a similar career; - Engaging with teachers on Mars planetary science and the potential careers paths for their students who are interested in science and engineering; - Engaging with the public on current UK Mars exploration activities.

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