Browsing by Author "Turner, Ray"

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    CUSTARD (Cranfield University Space Technology Advanced Research Demonstrator) - A Micro-System Technology Demonstrator Nanosatellite. Summary of the Group Design Project MSc in Astronautics and Space Engineering. 1999-2000, Cranfield University
    (2003-09-19T00:00:00Z) Hobbs, Stephen; Turner, Ray
    CUSTARD (Cranfield University Space Technology And Research Demonstrator) was the group design project for students of the MSc in Astronautics and Space Engineering for the Academic Year 1999/2000 at Cranfield University. The project involved the initial design of a nanosatellite to be used as a technology demonstrator for microsystem technology (MST) in space. The students worked together as one group (organised into several subgroups, e.g. system, mechanical), with each student responsible for a set of work packages. The nanosatellite designed had a mass of 4 kg, lifetime of 3 months in low Earth orbit, coarse 3-axis attitude control (no orbit control), and was capable of carrying up to 1 kg of payload. The electrical power available was 18 W (peak). Assuming a single X-band ground station at RAL (UK), a data rate of up to 1 M bit s-1 for about 3000 s per day is possible. The payloads proposed are a microgravity laboratory and a formation flying experiment. The report summarises the results of the project and includes executive summaries from all team members. Further information and summaries of the full reports are available from the College of Aeronautics, Cranfield University.
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    Mars Xpress. Summary of the Group Design Project, MSc in Astronautics and Space Engineering, 1997/98, Cranfield University
    (2003-09-19T00:00:00Z) Hobbs, Stephen; Turner, Ray
    This is a summary of the Group Design Project of the MSc course in Astronautics and Space Engineering in the College of Aeronautics at Cranfield University for the academic year 1997/98. Executive summaries from all the individual reports are contained in an Appendix to this report. The project represents about 8000 hours’ e®ort by the students of the course directed by sta®, and takes the form of a preliminary mission feasibility study. The project was based on ESA’s Mars Express mission. The proposed mission is for a Martian lander composed principally of a rover equipped to search for signs of past or present life on Mars. A controlled descent is required to ensure landing close to sites of particular interest. The surface exploration is planned to last 250 Martian days. A Mars orbiter (also part of the Mars Express mission) is used as a relay for the rover to communicate with Earth. The mission appears feasible as far as the study goes. Topics requiring further study were identified and include thermal design, communications with Earth, achieving the required landing precision, and mobility on the Martian su
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    ORWELL Demonstrator, Summary of the Group Design Project, MSc in Astronautics and Space Engineering, 1998/99, Cranfield University
    (2003-09-19T00:00:00Z) Hobbs, Stephen; Turner, Ray
    ORWELL Demonstrator, the group design project for the MSc in Astronautics and Space Engineering 1998/99, is a demonstrator for an Earth observation (EO) system whose objective is to provide a commercial service complementing current and planned EO systems. Rapid response and low cost are the main mission drivers. The baseline developed uses a constellation of twelve satellites in four planes for the full system, and one of these four planes (with three satellites) for the demonstrator. The payload proposed is a lightweight low- power synthetic aperture radar (SAR). The SAR is technologically demanding but offers the possibility of all-weather 24-hour imaging which is critical for fast-response imaging. A standard minisatellite bus (the SpectrumAstro SA200) is proposed for use in the mission. The report summarises the results of the project and includes executive summaries from all team members. Further information and summaries of the full reports are available from the College of Aeronautics, Cranfield University.