A/C Serial No.Wa634 Section 2B
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Robust Fly-By-Wire Under Horizontal Tail Damage
Robust Fly-by-Wire under Horizontal Tail Damage by Zinhle Dlamini Thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Electronic Engineering in the Faculty of Engineering at Stellenbosch University Department of Electrical and Electronic Engineering, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa. Supervisor: Prof T Jones December 2016 Stellenbosch University https://scholar.sun.ac.za Declaration By submitting this thesis electronically, I declare that the entirety of the work contained therein is my own, original work, that I am the sole author thereof (save to the extent explicitly otherwise stated), that reproduction and publication thereof by Stellenbosch University will not infringe any third party rights and that I have not previously in its entirety or in part submitted it for obtaining any qualification. Date: . Copyright © 2016 Stellenbosch University All rights reserved. i Stellenbosch University https://scholar.sun.ac.za Abstract Aircraft damage modelling was conducted on a Boeing 747 to examine the effects of asymmetric horizontal stabiliser loss on the flight dynamics of a commercial fly-by-Wire (FBW) aircraft. Change in static stability was investigated by analysing how the static margin is reduced as a function of percentage tail loss. It is proven that contrary to intuition, the aircraft is longitudinally stable with 40% horizontal tail removed. The short period mode is significantly changed and to a lesser extent the Dutch roll mode is affected through lateral coupling. Longitudinal and lateral trimmability of the damaged aircraft are analysed by comparing the tail-loss-induced roll, pitch, and yaw moments to available actuator force from control surfaces. -
The Effects of Design, Manufacturing Processes, and Operations Management on the Assembly of Aircraft Composite Structure by Robert Mark Coleman
The Effects of Design, Manufacturing Processes, and Operations Management on the Assembly of Aircraft Composite Structure by Robert Mark Coleman B.S. Civil Engineering Duke University, 1984 Submitted to the Sloan School of Management and the Department of Aeronautics and Astronautics in Partial Fulfillment of the Requirements for the Degrees of Master of Science in Management and Master of Science in Aeronautics and Astronautics in conjuction with the LEADERS FOR MANUFACTURING PROGRAM at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY June 1991 © 1991, MASSACHUSETTS INSTITUTE OF TECHNOLOGY ALL RIGHTS RESERVED Signature of Author_ .• May, 1991 Certified by Stephen C. Graves Professor of Management Science Certified by A/roJ , Paul A. Lagace Profes s Aeron icand Astronautics Accepted by Jeffrey A. Barks Associate Dean aster's and Bachelor's Programs I.. Jloan School of Management Accepted by - No U Professor Harold Y. Wachman Chairman, Department Graduate Committee Aero Department of Aeronautics and Astronautics MASSACHiUSEITS INSTITUTE OFN Fr1 1'9n.nry JUJN 12: 1991 1 UiBRARIES The Effects of Design, Manufacturing Processes, and Operations Management on the Assembly of Aircraft Composite Structure by Robert Mark Coleman Submitted to the Sloan School of Management and the Department of Aeronautics and Astronautics in Partial Fulfillment of the Requirements for the Degrees of Master of Science in Management and Master of Science in Aeronautics and Astronautics June 1991 ABSTRACT Composite materials have many characteristics well-suited for aerospace applications. Advanced graphite/epoxy composites are especially favored due to their high stiffness, strength-to-weight ratios, and resistance to fatigue and corrosion. Research emphasis to date has been on the design and fabrication of composite detail parts, with considerably less attention given to the cost and quality issues in their subsequent assembly. -
Fly-By-Wire - Wikipedia, the Free Encyclopedia 11-8-20 下午5:33 Fly-By-Wire from Wikipedia, the Free Encyclopedia
Fly-by-wire - Wikipedia, the free encyclopedia 11-8-20 下午5:33 Fly-by-wire From Wikipedia, the free encyclopedia Fly-by-wire (FBW) is a system that replaces the Fly-by-wire conventional manual flight controls of an aircraft with an electronic interface. The movements of flight controls are converted to electronic signals transmitted by wires (hence the fly-by-wire term), and flight control computers determine how to move the actuators at each control surface to provide the ordered response. The fly-by-wire system also allows automatic signals sent by the aircraft's computers to perform functions without the pilot's input, as in systems that automatically help stabilize the aircraft.[1] Contents Green colored flight control wiring of a test aircraft 1 Development 1.1 Basic operation 1.1.1 Command 1.1.2 Automatic Stability Systems 1.2 Safety and redundancy 1.3 Weight saving 1.4 History 2 Analog systems 3 Digital systems 3.1 Applications 3.2 Legislation 3.3 Redundancy 3.4 Airbus/Boeing 4 Engine digital control 5 Further developments 5.1 Fly-by-optics 5.2 Power-by-wire 5.3 Fly-by-wireless 5.4 Intelligent Flight Control System 6 See also 7 References 8 External links Development http://en.wikipedia.org/wiki/Fly-by-wire Page 1 of 9 Fly-by-wire - Wikipedia, the free encyclopedia 11-8-20 下午5:33 Mechanical and hydro-mechanical flight control systems are relatively heavy and require careful routing of flight control cables through the aircraft by systems of pulleys, cranks, tension cables and hydraulic pipes. -
Information and Questions Regarding the Army, RAF and RN
@ Defence Statistics (Tri-Service) Ministry Of Defence Main Building ~ Whitehall -.- London SW1A 2HB Ministry United Kingdom Telephone [MOD]: +44 (0)20 7807 8896 of Defence Facsimile [MOD]: +44 (0)20 7218 0969 E-mail: [email protected] Reference: FOl2020/08689 and FOl2020/08717 Date: 26th August 2020 Dear Thank you for your emails of 28th/27th July requesting the following information: FOl2020/08689: ''ARMY Ql. Geographic Locations - What are the top three military Garrisons/Barrack locations within the UK which have the highest percentage proportion of; a) Female Commissioned Officers within its population b) BAME Commissioned Officers within its population c) Female soldiers and Senior Non-Commissioned Officers within its population d) BAME soldiers and Senior Non-Commissioned Officers within its population Please state percentage of female/BAME composition in the response and total si:ze of population, i.e. Aldershot Garrison - Female commissioned officers make up 10% of a total population of approximately 5,000 commissioned officers with Aldershot Garrison. Q2 - Regimental Concentration - What are the top three individual Regiments/Battalions with the highest percentage proportion of; a) Female Commissioned Officers within its population b) BAME Commissioned Officers within its population c) Female soldiers and Senior Non-Commissioned Officers within its population d) BAME soldiers and Senior Non-Commissioned Officers within its population Please state percentage of female/BAME composition in the response and total -
Airpilotdec 2017 ISSUE 24
AIR PILOT DEC 2017:AIR PILOT MASTER 29/11/17 09:25 Page 1 AirPilot DEC 2017 ISSUE 24 AIR PILOT DEC 2017:AIR PILOT MASTER 29/11/17 09:25 Page 2 Diary DECEMBER 2017 7th General Purposes & Finance Committee Cobham House AIR PILOT 14th Carol Service St. Michaels, Cornhill THE HONOURABLE COMPANY OF JANUARY 2018 AIR PILOTS 10th AST/APT meeting Dowgate Hill House incorporating 16th Air Pilots Benevolent Fund AGM RAF Club Air Navigators 18th General Purposes & Finance Committee Dowgate Hill House 18th Court & Election Dinner Cutlers’ Hall PATRON: His Royal Highness FEBRUARY 2018 The Prince Philip 7th Pilot Aptitude Testing RAF Cranwell Duke of Edinburgh KG KT 8th General Purposes & Finance Committee Dowgate Hill House 20th Luncheon Club RAF Club GRAND MASTER: His Royal Highness The Prince Andrew Duke of York KG GCVO MASTER: VISITS PROGRAMME Captain C J Spurrier Please see the flyers accompanying this issue of Air Pilot or contact Liveryman David Curgenven at [email protected]. CLERK: These flyers can also be downloaded from the Company's website. Paul J Tacon BA FCIS Please check on the Company website for visits that are to be confirmed. Incorporated by Royal Charter. A Livery Company of the City of London. PUBLISHED BY: GOLF CLUB EVENTS The Honourable Company of Air Pilots, Please check on Company website for latest information Cobham House, 9 Warwick Court, Gray’s Inn, London WC1R 5DJ. EDITOR: Paul Smiddy BA (Eco n), FCA EMAIL: [email protected] FUNCTION PHOTOGRAPHY: Gerald Sharp Photography View images and order prints on-line. TELEPHONE: 020 8599 5070 EMAIL: [email protected] WEBSITE: www.sharpphoto.co.uk PRINTED BY: Printed Solutions Ltd 01494 478870 Except where specifically stated, none of the material in this issue is to be taken as expressing the opinion of the Court of the Company. -
20190409-Old Cranwellians-Apr19 V1.4-O with Images
RAF News Brief 2019/2 Organisation Operational Service Medal In 2017, Her Majesty The Queen agreed the introduction of a new Operational Service Medal (OSM) for Op SHADER. In February 2019, Her Majesty The Queen graciously approved an extension of the medal without clasp for personnel assessed as making a significant and direct operational contribution, but outside the joint operational area for Op SHADER. Under new rules, personnel from all three services serving from outside the traditional area of operations, such as operators of RAF Reaper Remotely Piloted Air System (RPAS) aircraft, can now receive the Op SHADER medal without clasp. The award of the medal reflects the changing nature of modern conflict and recognises the vital contribution that personnel working from outside the operational area of Iraq and Syria have made to the campaign. This will be the first time that RPAS crews have received formal medallic recognition. Ground crew serving at RAF Akrotiri in Cyprus, where UK airstrikes over Iraq and Syria are launched from are also eligible, as well as Army and Navy personnel providing logistic and communications support. Chief of the Air Staff, Air Chief Marshal Sir Stephen Hillier, said: “I am delighted to see this wider recognition of the RAF’s vital contribution to Op SHADER. Under the previous criteria, only about 14% of RAF personnel who had supported Op SHADER were entitled to receive the OSM. Under the new criteria, that proportion rises to over two-thirds. I extend my personal thanks and congratulations to all those who will now receive the OSM for their outstanding Op SHADER contribution.” Update on Defence Estate Optimisation Programme The MOD published an update to the Defence Estate Optimisation Programme in March 2019, setting new information for 33 military sites across the UK. -
Kings RAF Booklet
Combined Cadet Force Royal Air Force A Commissioning Aide Memoire for the Officer Cadre Version 1 “Where else could you learn to fly aerobatics, visit Royal Air Force Stations, tour foreign countries, play sports from local to international level, learn the skills to lead expeditions, become a target shooting marksman, gain your Duke of Edinburgh Awards, canoe through white water, assist your community, join a band, learn aviation subjects, go caving, parachute, climb, sail, ski...? These and much more are readily available to you as a member of the Air Cadet Organization.” Air Commodore Jon Chitty OBE. Introduction The school cadet organisation originates from 1859, when schools at Eton, Harrow, Rugby, Rossall, Felsted, Hurstpierpoint, Winchester and Tonbridge formed armed uniformed units as part of a national reserve to counter a perceived threat from abroad. By 1900, cadet units were established in over 100 schools across the country and in 1908, these units were re-titled the Officer Training Corps (OTC). In 1948, the OTC was renamed the Combined Cadet Force. The aim of the Combined Cadet Force is to provide a framework through which young people develop the qualities of team work, self-reliance, resourcefulness, leadership and responsibility. A weekly programme of military training is designed to give young people at King’s a chance to exercise responsibility and leadership, to provide them with knowledge of our defence forces, and to encourage those who might be interested in becoming officers of the Armed Services. Uniform members of the Combined Cadet Force will regularly stay on Royal Air Forces bases, therefore it is important that cadets are able to demonstrate an awareness of the structure and organisation of the Royal Air Force, its role in the defence of the United Kingdom and her interests and the operations in which the Royal Air Force are currently engaged. -
RAF Football Association - E-Bulletin
RAF Football Association - E-Bulletin RAF FA CUP ‘THE KEITH CHRISTIE TROPHY’ AND RAF FA PLATE 19/20 UPDATE With the RAF Cup now in full swing, the second round produced some more exciting ties and saw some big names exit the competition. RAF Leeming’s away trip to Akrotiri was the eagerly anticipated tie of the round, however it proved to be a tough trip for the visitors as they were on the receiving end of a heavy 5-1 defeat. SAC Liam Thornton grabbed four of the goals, taking his overall tally to six and making him the current top scorer in the competition. RAF Brize Norton faced the long journey up to Lossiemouth and it proved to be successful as they ground out a 1-0 win with Sgt Dave Wanless scoring the all-important goal, Brize Norton will be hoping for a slightly shorter journey if they are drawn away in the next round. SAC Liam Wood scored his first two goals of the competition helping RAF Northolt to an away win at Wyton with RAF Coningsby also picking up a convincing away victory running out 4-0 winner against JFC Chicksands & RAF Henlow. RAF Honington who have a great history with the competition were knocked out at the hands of RAF Odiham thanks to a single goal from SAC Clarke Goulding. RAF FA E-Bulletin – RAF Cup Update Elsewhere, RAF Shawbury and RAF Marham both scored four goals each to take them through with victories over MOD St Athan and RAF Waddington respectively. RAF Boulmer also strolled through to the next round with an impressive 7-1 victory over RAF Cranwell. -
A Service Publication of Lockheed Martin Aeronautical Systems Support Company
LOCKHEED MAaTIN 4 VOL. 24, NO. 1 JULY-SEPTEMBER 1997 A SERVICE PUBLICATION OF LOCKHEED MARTIN AERONAUTICAL SYSTEMS SUPPORT COMPANY - • Previous Page Table of Contents Next Page LOCKHEED MARTIN Service News It’s All in the Teamwork A SERVICE PUBLICATION OF t would be difficult to find an area of human endeavor that is more dependent upon team- LOCKHEED MARTIN AERONAUTICAL work for success than aviation. It is significant that mankind’s first conquest of the air was SYSTEMS SUPPORT COMPANY Inot achieved by an isolated visionary laboring in seclusion. Instead, the initial success came through the combined efforts of two gifted bicycle mechanics from Ohio, working with a team of Editor helpers and friends on a windswept beach in North Carolina. Charles I. Gale We at Lockheed Martin Aeronautical Systems Support Company (LMASSC) have never lost sight of the importance of just that kind Vol. 24, No. 1, July - September 1997 of teamwork in the way we operate our business. It is no coinci- dence that LMASSC is organized as a close partnership of two CONTENTS teams of specialists, both fully committed to meeting the total support needs of our customers. 2 Focal Point LMASSC’s Business Development and Each of the LMASSC organizations has its own special areas of Field Support units team up to provide expertise and responsibilities. Business Development, led by the best in total customer support. George Lowe, is the marketing arm for LMASSC and as such provides a remarkably broad range of customer support products. These include a com- 3 All About Power Plant Hoses prehensive spares provisioning program that offers new and overhauled spare parts and Both Teflon and elastomeric hoses are support/test equipment, rebuilt parts, an innovative parts exchange program, and complete used to connect power plant compo- component repair and overhaul. -
AP3456 the Central Flying School (CFS) Manual of Flying: Volume 4 Aircraft Systems
AP3456 – 4-1- Hydraulic Systems CHAPTER 1 - HYDRAULIC SYSTEMS Introduction 1. Hydraulic power has unique characteristics which influence its selection to power aircraft systems instead of electrics and pneumatics, the other available secondary power systems. The advantages of hydraulic power are that: a. It is capable of transmitting very high forces. b. It has rapid and precise response to input signals. c. It has good power to weight ratio. d. It is simple and reliable. e. It is not affected by electro-magnetic interference. Although it is less versatile than present generation electric/electronic systems, hydraulic power is the normal secondary power source used in aircraft for operation of those aircraft systems which require large power inputs and precise and rapid movement. These include flying controls, flaps, retractable undercarriages and wheel brakes. Principles 2. Basic Power Transmission. A simple practical application of hydraulic power is shown in Fig 1 which depicts a closed system typical of that used to operate light aircraft wheel brakes. When the force on the master cylinder piston is increased slightly by light operation of the brake pedals, the slave piston will extend until the brake shoe contacts the brake drum. This restriction will prevent further movement of the slave and the master cylinder. However, any increase in force on the master cylinder will increase pressure in the fluid, and it will therefore increase the braking force acting on the shoes. When braking is complete, removal of the load from the master cylinder will reduce hydraulic pressure, and the brake shoe will retract under spring tension. -
09 Stability and Control
Aircraft Design Lecture 9: Stability and Control G. Dimitriadis Introduction to Aircraft Design Stability and Control H Aircraft stability deals with the ability to keep an aircraft in the air in the chosen flight attitude. H Aircraft control deals with the ability to change the flight direction and attitude of an aircraft. H Both these issues must be investigated during the preliminary design process. Introduction to Aircraft Design Design criteria? H Stability and control are not design criteria H In other words, civil aircraft are not designed specifically for stability and control H They are designed for performance. H Once a preliminary design that meets the performance criteria is created, then its stability is assessed and its control is designed. Introduction to Aircraft Design Flight Mechanics H Stability and control are collectively referred to as flight mechanics H The study of the mechanics and dynamics of flight is the means by which : – We can design an airplane to accomplish efficiently a specific task – We can make the task of the pilot easier by ensuring good handling qualities – We can avoid unwanted or unexpected phenomena that can be encountered in flight Introduction to Aircraft Design Aircraft description Flight Control Pilot System Airplane Response Task The pilot has direct control only of the Flight Control System. However, he can tailor his inputs to the FCS by observing the airplane’s response while always keeping an eye on the task at hand. Introduction to Aircraft Design Control Surfaces H Aircraft control -
General Comments
Oxfordshire Minerals and Waste Development Framework MINERALS SITE PROPOSALS AND POLICIES DOCUMENT ISSUES AND OPTIONS CONSULTATION April 2007 SUMMARY OF RESPONSES Minerals Site Proposals and Policies Document: Issues and Options 2007 CONTENTS 1 Introduction 2 1.1 Context and History 2 1.2 The Consultation Process 2 1.3 Purpose of this Report 3 1.4 Structure of this Report 3 2 Summary of Responses 4 2.1 Comments on Aggregate Mineral Working Sites 4 2.2 Comments on Non-Aggregate Minerals 8 2.3 Comments on Secondary and Recycled Aggregate Sites 8 2.4 Comments on Mineral Safeguarding/ Consultation Areas 9 2.5 Comments on the Strategic Assessment of Resources 10 2.6 Comments on the Document and Subsequent Consultation 10 APPENDICES Appendix 1 Sharp Sand and Gravel Sites 12 Appendix 2 Soft Sand Sites 14 Appendix 3 Crushed Rock Sites 15 Appendix 4 Secondary and Recycled Aggregate Producing Sites 16 Appendix 5 Rail Depots Sites 17 ANNEXES Annex A Comments on Sharp Sand and Gravel Sites 18 Annex B Comments on Soft Sand Sites 75 Annex C Comments on Crushed Rock Sites 82 Annex D Comments on Secondary and Recycled Aggregate Sites 86 Annex E Comments on Rail Depots Sites 96 Consultation Summary Report 1 Minerals Site Proposals and Policies Document: Issues and Options 2007 1 INTRODUCTION 1.1 Context and History 1.1.1 Oxfordshire County Council is reviewing the planning policies covering minerals working and waste management in Oxfordshire. This will result in a new policy framework for minerals and waste development in the County – the Oxfordshire Minerals and Waste Development Framework.