Zephyr: A High Altitude Long Endurance Unmanned Air Vehicle ...

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The table of results for the second angle of attack experiment at much coldertemperatures:Desired SensorTemperature (C)Actual SensorTemperature (C)Voltage at110 countsVoltage at150 countsVoltage at190 countsChamberPressure (mbar)-40 -42.0 0.722 1.419 2.499 45.0-50 -51.1 0.735 1.421 2.499 45.1-60 -60.7 0.736 1.424 2.470 46.0-70 -70.1 0.735 1.422 2.472 46.3-80 -80.1 0.735 1.425 2.468 51.8-90 -89.8 0.735 1.422 2.473 56.7-100 -99.2 0.737 1.422 2.482 70.5-90 -90.1 0.737 1.421 2.439 90.1-80 -80.2 0.736 1.421 2.473 78.9-70 -70.3 0.733 1.417 2.446 80.7-60 -60.1 0.734 1.416 2.447 79.1-50 -49.8 0.736 1.418 2.446 80.2-40 -39.8 0.736 1.411 2.438 78.9-50 -50.6 0.732 1.414 2.459 79.9-60 -59.8 0.733 1.409 2.452 79.7-70 -70.2 0.729 1.409 2.435 79.8-80 -79.3 0.737 1.409 2.449 85.1-90 -89.7 0.727 1.409 2.442 46.3-100 -99.5 0.728 1.408 2.440 52.6-90 -89.9 0.734 1.409 2.448 89.1-80 -80.1 0.732 1.412 2.449 80.4-70 -70.2 0.729 1.418 2.447 80.4-60 -60.1 0.739 1.419 2.462 79.9-50 -49.6 0.738 1.417 2.460 79.7-40 -39.9 0.736 1.415 2.452 80.074
BibliographyQinetiQ Documents[1] Stevens,P, <strong>Zephyr</strong> System Safety Case Overview. QinetiQ, 2008. (SAF040372)Websites[2] Hyper Physics, 2002. ‘Cosmic Rays’. Viewed: 12 January 2009.Available at: http://hyperphysics.phy-astr.gsu.edu/HBASE/astro/cosmic.html[3] The Energy Blog, 2005. ‘About Amorphous Silicon Solar Cells’.Viewed: 7 Februry 2009.Available at:http://thefraserdomain.typepad.com/energy/2005/08/about_amorphous.html[4] NIST, 2003. ‘Basic Atomic Spectroscopic Data’.Viewed: 21 March 2009.Available at: http://physics.nist.gov/PhysRefData/Handbook/Tables/sulfurtable1.htm[5] SION Power, 2005. ‘Lithium Sulfur Rechargeable Battery Data Sheet’.Viewed: 11 June 2008.Available at: http://www.sionpower.com/pdf/sion_product_spec.pdf[6] NASA. ‘Aeronautics’. Viewed: 21 March 2009.Available at:http://quest.arc.nasa.gov/aero/virtual/demo/aeronautics/tutorial/images/3axis.gif[7] NHS, 2008. ‘Health Survey for England’. Viewed: 18 April 2008.Available at: http://www.ic.nhs.uk/statistics-and-data-collections/health-and-lifestyles-related-surveys/health-survey-for-england/health-survey-for-england-2007-latest-trends-%5Bns%5D[8] All Sensors, 2008. ‘Amplified Very Low Pressure Sensors’. Viewed: 29September 2008.75
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Zephyr:A High Altitude Long Enduran
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AcknowledgementsI’d like to thank
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ContentsChapter 1 - Introduction an
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Chapter 1Introduction and Backgroun
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1.1 History of ZephyrZephyr is a li
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The Zephyr 5 project continued with
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airframe, with the main aim to impr
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1.2 Environmental IssuesDuring the
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order to function, they may not thu
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1.2.3 Cosmic RaysCosmic rays are en
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wind speeds. This is to ensure that
Page 23 and 24:
crystalline silicon cells and can b
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which are then insulated. In order
Page 27 and 28:
motion of the aircraft including ro
Page 29 and 30: Within the portable cabins the crew
Page 31 and 32: Simple payloads instructions withou
Page 33 and 34: In the event that the wing does not
Page 35 and 36: Graph 4 shows radiosonde density da
Page 37 and 38: 3.2 NIOSH Lifting EquationThe hand
Page 39 and 40: Variable Description MultiplierD (c
Page 41 and 42: Using the given values, the corresp
Page 43 and 44: 3.3 Airspeed SensorThe current airs
Page 45: 12VSensorPCBZenerDiodeFigure 8. Dia
Page 48 and 49: 3.4 PayloadThe payload is the carry
Page 50 and 51: where λ is the wavelength, c is th
Page 52 and 53: 3.5 Angle of Attack SensorThe angle
Page 54 and 55: The magnetic sensor seemed much mor
Page 56 and 57: Chapter 4Angle of Attack Experiment
Page 58 and 59: The sensor was powered using an ext
Page 60 and 61: It has to be noted however, that on
Page 62 and 63: experience the atmospheric conditio
Page 65 and 66: 5.2.1 Aerial PhotographyThe most co
Page 67 and 68: meaning that these cameras can be u
Page 69 and 70: Infoterra have a project called Far
Page 71 and 72: it out for long endurance missions.
Page 73 and 74: Figure 18. QinetiQ’s Zephyr5.4 Co
Page 75 and 76: where it is needed rather than havi
Page 77 and 78: Appendix 3Schematic diagram of the
Page 79: Appendix 5The results table for the
Page 83: [19] Encyclopedia Britannica, 2004.
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