DOCSLIB.ORG

The European Helicopter Safety Team (EHEST): European Partnership for Improving Helicopter Safety

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
The European Helicopter Safety Team (EHEST): European Partnership for Improving Helicopter Safety 34th European Rotorcraft Forum 2008 (ERF34) Liverpool, United Kingdom 16-19 September 2008 Volume 1 of 3 ISBN: 978-1-61782-199-8 Printed from e-media with permission by: Curran Associates, Inc. 57 Morehouse Lane Red Hook, NY 12571 Some format issues inherent in the e-media version may also appear in this print version. Copyright© (2008) by Royal Aeronautical Society All rights reserved. Printed by Curran Associates, Inc. (2011) For permission requests, please contact Royal Aeronautical Society at the address below. Royal Aeronautical Society No. 4 Hamilton Place London W1J 7BQ United Kingdom Phone: +44 (0) 20 7670 4300 Fax: +44 (0) 20 7670 4309 www.raes.org.uk Additional copies of this publication are available from: Curran Associates, Inc. 57 Morehouse Lane Red Hook, NY 12571 USA Phone: 845-758-0400 Fax: 845-758-2634 Email: [email protected] Web: www.proceedings.com TABLE OF CONTENTS VOLUME 1 SESSION 1 PARALLEL SESSION A - SAFETY The European Helicopter Safety Team (EHEST): European Partnership for Improving Helicopter Safety ......................................................................................................................................................................................1 M. Masson, M. Van Hijum, A. Healey, J. Vincent, A. Evans PARALLEL SESSION B - AERODYNAMICS Rotorcraft Simulations Using a Sliding-grid Approach ................................................................................................... 47 O. J. Boelens, H. Van Der Ven, J. C. Kok, B. B. Prananta Higher-Order Accurate Simulations of Blade-Vortex Interaction Using a Discontinuous Galerkin Method on Unstructured Meshes ....................................................................................................................................... 76 Hee Dong Lee, Oh Joon Kwon PARALLEL SESSION C – FLIGHT MECHANICS Numerical Flow Simulations past a Bell 412 Helicopter in Real-Time Hover, Low and High Forward Speed Flight Conditions Using Chimera Grid Technique................................................................................................ 91 F. Zhang, H. Xu, N. G. Ball, A. W. Gubbels Chinook Helicopter and Slung Load Coupled Body Dynamic Simulation ................................................................... 141 K. R. Reddy, T. T. Truong, K. J. Bourne, R. A. Stuckey, N. Blacker SESSION 2 PARALLEL SESSION A – PILOT COUPLING Nonlinear Rotorcraft Pilot Coupling Analysis and Anti-windup Design ...................................................................... 177 Sebastien Kolb, Pierre-Marie Basset The Strongly Controlled Helicopter................................................................................................................................. 210 Linghai Lu, Gareth Padfield, Michael Jump PARALLEL SESSION B - AERODYNAMICS BERP IV Aerodynamics, Performance and Flight Envelope......................................................................................... 245 Kevin Robinson, Alan Brocklehurst Conservation Issues for RANS-Based Rotor Aeroelastic Simulations .......................................................................... 253 Marilyn J. Smith PARALLEL SESSION C – FLIGHT MECHANICS Rotary Wing UAV: HIL Tests for a Model-based Feedforward Controller................................................................. 295 Filippo Zanetti, Stefano Colautti, Gian Marco Saggiani, Veronica Rossi Linear Models for Integrated Flight and Rotor Control................................................................................................ 333 J. V. R. Prasad, F. E. Olcer, L. N. Sankar, C. He SESSION 3 PARALLEL SESSION A - ACOUSTICS Influence of Vortex Models on the Prediction of 2D Airfoil Vortex Interaction .......................................................... 360 S. Loiodice, D. Drikakis, A. Kokkalis Aeroacoustic Analysis of Main Rotor – Tail Rotor Interaction ..................................................................................... 370 Timothy M. Fletcher, Karthikeyan Duraisamy, Richard E. Brown Aeroacoustic Flight Test Data Analysis and Guidelines for Noise-Abatement-Procedure Design and Piloting................................................................................................................................................................................ 383 Pierre Spiegel, Frederic Guntzer, Anne Le Duc, Heino Bucholz PARALLEL SESSION B - AERODYNAMICS A Two-Grid Overset Method for the Prediction of Isolated Rotor Hover Performance ............................................. 449 Marvin A. Moulton, Mahendra J. Bhagwat, Francis X. Caradonna Computational Analysis of Rotor-fuselage Interactional Aerodynamics Using Sliding-plane CFD Method................................................................................................................................................................................ 484 R. Steijl, G. Barakos Blade-vortex Interaction Capture by CFD...................................................................................................................... 500 T. Renaud, G. Perez, C. Benoit, G. Jeanfaivre, S. Péron High Resolution Computation of the Aerodynamics and Acoustics of Blade Vortex Interaction............................... 531 Alasdair Thom, Karthikeyan Duraisamy PARALLEL SESSION C – OPERATIONAL ASPECTS Helicopter IFR Steep and Curved Approaches Using SBAS Guidance ........................................................................ 545 Thomas Lüken, Ernst Groll, Florian Antrack, Bernd Korn Relevant Aspects of Helicopter-Ship Operations ............................................................................................................ 578 A. Hoencamp, Th. Van Holten, J. V. R. Prasad Study of a Downwash Caused by a Hovering Rotor in Ground Effect ......................................................................... 589 Yasutada Tanabe, Shigeru Saito, Naoko Ooyama, Katsumi Hiraoka DLR - Onera Common Research Programme for Rotorcraft ....................................................................................... 600 Blanche Demaret, Klausdieter Pahlke SESSION 4 PARALLEL SESSION A – ROTORCRAFT-PILOT COUPLINGS Adverse Rotorcraft-Pilot Coupling: Recent Research Activities in Europe ................................................................. 644 Oliver Dieterich, Joachim Gotz, Binh Dang Vu, Henk Haverdings, Pierangelo Masarati, Marilena Pavel, Michael Jump, Massimo Gennaretti Adverse Rotorcraft-Pilot Couplings - Prediction and Suppression of Rigid Body RPC Sketches from the Work of Garteur HC-AG16........................................................................................................................................ 693 Marilena D. Pavel, Binh Dang Vu, Joachim Gotz, Michael Jump, Oliver Dieterich Adverse Rotorcraft-Pilot Coupling: Test Campaign Development at the University of Liverpool ............................ 740 M. Jump, S. Hodge, B. Dang Vu, P. Masarati, G. Quaranta, M. Mattaboni, M. D. Pavel, O. Dieterich PARALLEL SESSION B - AERODYNAMICS Computational Analysis of Orthogonal Blade Vortex Interaction ................................................................................ 787 Antonio Filippone Comparison of Finite-State Dynamic Stall Theory with Unsteady Data....................................................................... 797 Loren A. Ahaus, David A. Peters CFD For Tail Rotor Design and Evaluation.................................................................................................................... 846 Alan Brocklehurst, René Steijl, George Barakos PARALLEL SESSION C – STRUCTURES & MATERIALS Remote Synthesis of Loads on Helicopter Rotating Components using Linear Regression, Load Path and Statistical Analyses..................................................................................................................................................... 867 Xiaobo Yu, Callum Wright, Manfred Heller VOLUME 2 Robust Optimal Design of Composite Helicopter Rotor Blade Cross Section.............................................................. 915 Senthil Murugan, Ranjan Ganguli, Dineshkumar Harursampath SESSION 5 PARALLEL SESSION A - TESTING Evaluation of a Steep Curved Rotorcraft IFR Procedure in a Helicopter-ATC Integrated Simulation Test...................................................................................................................................................................................... 946 Henk Haverdings The Development of 4-blades New Rotor System for an Unmanned Helicopter with 100kg-class MTOW ............................................................................................................................................................................... 987 Deog-Kwan Kim, Keun-Woong Song, Ki-Hoon Chung, Young-Jung Kee, Sung-Ho Kim PARALLEL SESSION B - AERODYNAMICS An Approximate Unsteady Aerodynamic Model for Flapped Airfoils Including Improved Drag Predictions........................................................................................................................................................................ 1037 Li Liu, Peretz P. Friedmann, Ashwani K. Padthe High-order Simulation of a Rotor in Forward Flight Using a Four-dimensional Adaptive Flow Solver................. 1082 H. Van Der Ven, O. J. Boelens Transition Modelling for Rotorcraft CFD..................................................................................................................... 1123 Georgios Zografakis, George Barakos, Mark Johnson PARALLEL SESSION C – FLIGHT
Load more

Recommended publications
  • Shipboard Operations
    FM 1-564 SHIPBOARD OPERATIONS HEADQUARTERS, DEPARTMENT OF THE ARMY DISTRIBUTION RESTRICTION: Approved for public release; distribution is unlimited. Field Manual *FM1-564 No. 1-564 Headquarters Department of the Army Washington, DC, 29 June 1997 SHIPBOARD OPERATIONS Contents PREFACE CHAPTER 1. PREDEPLOYMENT PLANNING Section 1. Mission Analysis 1-1. Preparation 1-1 1-2. Mission Definition 1-1 1-3. Shipboard Helicopter Training Requirements 1-2 1-4. Service Responsibilities 1-2 1-5. Logistics 1-3 Section 2. Presail Conference 1-6. Coordination 1-7 1-7. Number of Army Aircraft on Board the Ship 1-7 1-8. Checklist 1-7 Section 3. Training Requirements 1-9. Aircrew Requirements for Training 1-9 1-10. Ground School Training 1-11 1-11. Initial Qualification and Currency Requirements 1-11 1-12. Ship Certification and Waiver 1-15 1-13. Detachment Certification 1-15 CHAPTER 2. PREPARATION FOR FLIGHT OPERATIONS Section 1. Chain of Command 2-1. Command Relationship 2-1 2-2. Special Operations 2-2 2-3. Augmentation Support 2-2 Section 2. Personnel Responsibilities 2-4. Flight Quarters Stations 2-3 2-5. Landing Signal Enlisted 2-4 DISTRIBUTION RESTRICTION: Approved for public release; distribution is unlimited. i Section 3. Aircraft Handling 2-6. Fundamentals 2-4 2-7. Helicopter Recovery Tie-Down Procedures 2-5 Section 4. The Air Plan 2-8. Scope 2-5 2-9. Contents 2-6 2-10. Maintenance Test Flights 2-7 2-11. Flight Plan 2-7 2-12. Aqueous Film-Forming Foam System and Mobile Firefighting Equipment 2-7 CHAPTER 3.
    [Show full text]
  • Shipboard Operations
    FM 1-564 SHIPBOARD OPERATIONS HEADQUARTERS, DEPARTMENT OF THE ARMY DISTRIBUTION RESTRICTION: Approved for public release; distribution is unlimited. Field Manual *FM1-564 No. 1-564 Headquarters Department of the Army Washington, DC, 29 June 1997 SHIPBOARD OPERATIONS Contents PREFACE CHAPTER 1. PREDEPLOYMENT PLANNING Section 1. Mission Analysis 1-1. Preparation 1-1 1-2. Mission Definition 1-1 1-3. Shipboard Helicopter Training Requirements 1-2 1-4. Service Responsibilities 1-2 1-5. Logistics 1-3 Section 2. Presail Conference 1-6. Coordination 1-7 1-7. Number of Army Aircraft on Board the Ship 1-7 1-8. Checklist 1-7 Section 3. Training Requirements 1-9. Aircrew Requirements for Training 1-9 1-10. Ground School Training 1-11 1-11. Initial Qualification and Currency Requirements 1-11 1-12. Ship Certification and Waiver 1-15 1-13. Detachment Certification 1-15 CHAPTER 2. PREPARATION FOR FLIGHT OPERATIONS Section 1. Chain of Command 2-1. Command Relationship 2-1 2-2. Special Operations 2-2 2-3. Augmentation Support 2-2 Section 2. Personnel Responsibilities 2-4. Flight Quarters Stations 2-3 2-5. Landing Signal Enlisted 2-4 DISTRIBUTION RESTRICTION: Approved for public release; distribution is unlimited. i Section 3. Aircraft Handling 2-6. Fundamentals 2-4 2-7. Helicopter Recovery Tie-Down Procedures 2-5 Section 4. The Air Plan 2-8. Scope 2-5 2-9. Contents 2-6 2-10. Maintenance Test Flights 2-7 2-11. Flight Plan 2-7 2-12. Aqueous Film-Forming Foam System and Mobile Firefighting Equipment 2-7 CHAPTER 3.
    [Show full text]
  • FY 06 Aviation Accident Review
    DOIDOI FYFY 0606 AviationAviation MishapsMishaps 44 AircraftAircraft AccidentsAccidents TheThe lossloss ofof oneone lifelife OneOne serious,serious, andand threethree minorminor injuriesinjuries 1212 IncidentsIncidents withwith PotentialPotential DOIDOI FYFY 0606 AviationAviation MishapsMishaps NTSB 831.13 Flow and dissemination of accident or incident information. (b) … Parties to the investigation may relay to their respective organizations information necessary for purposes of prevention or remedial action. … However, no (release of) information… without prior consultation and approval of the NTSB. ThisThis informationinformation isis providedprovided forfor accidentaccident preventionprevention purposespurposes onlyonly Fairbanks,Fairbanks, AKAK OctoberOctober 6,6, 20052005 Husky A-1B Mission Resource Clinic Training Damage Substantial Injuries None Procurement Fleet NTSB ID ANC06TA002 Fairbanks,Fairbanks, AKAK OctoberOctober 6,6, 20052005 Issues Mission briefing Cockpit communications Distraction Crew Selection Training standards and program objectives NTSBNTSB ProbableProbable CauseCause Fairbanks,Fairbanks, AK,AK, October October 6,6, 20052005 The National Probable Cause Transportation Safety Board determined that “The flight instructor's the probable cause of inadequate supervision of the dual this accident was … student during the landing roll, which resulted in the dual student applying the brakes excessively, and the airplane nosing over. A factor associated with the accident was the excessive braking by the dual student.” FAI
    [Show full text]
  • Principles of Helicopter Flight Acknowledgments Walter J
    Principles of Helicopter Flight Acknowledgments Walter J. Wagtendonk OBE United States Second U.S. Edition, Revised 2006 Amy Laboda, Editor Don Fairbanks Aviation Supplies & Academics, Inc. Cardinal Helicopter Training, 7005 132nd Place, SE Batavia, Ohio Newcastle, Washington 98059-3153 U.S.A. Associate Professor W. (Bill) Hopper First published in New Zealand by Walter J. Wagtendonk, 1992 Dept. of Aerospace and Technology, Parks College of St Louis University Cahokia, Illinois ©2006 Walter J. Wagtendonk Connie Reeves, Major (ret) US Army, All rights reserved. Dowell, Maryland Second edition, published 2006 by Aviation Supplies & Academics, Inc. No part of this manual may be reproduced in any manner whatsoever including McDonnel Douglas electronic, photographic, photocopying, facsimile, or stored in a retrieval Seattle, Washington system, without the prior written permission of the publisher. Special thanks to Raymond W. Prouty Nothing in this manual supersedes any operational documents or procedures Westlake Village, California, for valuable issued by the Federal Aviation Administration, aircraft and avionics advice and permission to use copyright manufacturers, flight schools, or the operators of aircraft. material. New Zealand Cover photo © iStockphoto.com/Johan Ramberg Flight Lieutenant Phil Murray, Published in the United States of America Royal New Zealand Air Force (ret) John Reid, MBE 10 09 08 07 06 9 8 7 6 5 4 3 2 1 Peter Tait Helicopters NZ Ltd ASA-PHF-2 ISBN 1-56027-649-5 Colin Bint 978-1-56027-649-4 Andy Smith Nelson Aviation College Keith Broady, Nelson Library of Congress Cataloging-in-Publication Data: Bill Conning Helicopter Operations Ltd Wagtendonk, Walter J,. 1929 Ann Wagtendonk Principles of helicopter flight / Walter J.
    [Show full text]
  • Download (6MB)
    Trchalik, Josef (2009) Aeroelastic modelling of gyroplane rotors. PhD thesis. http://theses.gla.ac.uk/1232/ Copyright and moral rights for this thesis are retained by the author A copy can be downloaded for personal non-commercial research or study, without prior permission or charge This thesis cannot be reproduced or quoted extensively from without first obtaining permission in writing from the Author The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the Author When referring to this work, full bibliographic details including the author, title, awarding institution and date of the thesis must be given Glasgow Theses Service http://theses.gla.ac.uk/ [email protected] Aeroelastic Modelling of Gyroplane Rotors Josef Trchalík, Dipl.Ing. Ph. D. Thesis Department of Aerospace Engineering University of Glasgow July 2009 Thesis submitted to the Faculty of Engineering in fulfillment of the requirements for the degree of Doctor of Philosophy c J. Trchalík, 2009 Abstract The gyroplane represents the first successful rotorcraft design and it paved the way for the development of the helicopter during the 1940s. Gyroplane rotors are not powered in flight and work in autorotative regime and hence the characteristics of a helicopter rotor during powered flight and a rotor in autorotation differ sig- nificantly. Gyroplanes in the UK have been involved in number of fatal accidents during the last two decades. Despite several research projects focused on gyroplane flight dynamics, the cause of some of gyroplane accidents still remains unclear. The aeroelastic behaviour of autorotating rotors is a relatively unexplored problem and it has not yet been investigated as possible cause of the accidents.
    [Show full text]
  • Australian Helicopter Accidents 1969-1988
    Department of Transport and Communications Bureau of Air Safety Investigation Australian Helicopter Accidents 1969 = 1988 Australian Government Publishing Service Canberra 0 Commonwealth of Australia 1989 ISBN 0 644 10919 X First published September 1989 Reprinted with amendments October 1989 This work is copyright. Apart from any use as permitted under the Cupyright Act 1968, no part may be reproduced by any process without written permission from the Director, Publishing and Marketing, AGPS. Inquiries should be directed to the Manager, AGPS Press, Australian Government Publishing Service, GPO Box 84, Canberra ACT 2601. Printed in Australia by Better Printing Service, 1 Foster Street, Queanbeyan N.S.W. 2620 ii TABLE OF CONTENTS MAIN F'INDINGS 1 INTRODUCTION 2 What is BAS1 2 History of helicopters in Australia 2 Why study helicopter accidents? 2 purpose of this report 3 Scope of the report 3 HELICOPTER ACCIDENT TRENDS 1969-88 4 FIRST OCCURRENCE 5 Stage of flight 6 DETAILED EXAMINATION OF MAJOR TYPES OF OCCURRENCES 7 Engine failure/malfunction 7 Hard landing 7 Wirestrike 8 Conmlled flight into level terrain 8 Loss of control 8 Collided with trees, shrubs or bushes 8 Fuel exhaustion 8 Main or tail rotor drive train failure 8 Main rotor failure 9 Roll-over 9 Tail rotor failure 9 PILOT FACTORS IN HELICOPTER ACCIDENTS 10 Perception 10 Information processing 10 Workload 10 Tunnel vision 11 False hypothesis 11 Stress and emotion 11 Fatigue 11 Execution 11 procedural 12 Risk assessment 12 Company pressures 12 Group expectations 12 PILOT FACTORS
    [Show full text]
  • Helicopters in the Royal Air Force
    ROYAL AIR FORCE HISTORICAL SOCIETY JOURNAL 25 2 The opinions expressed in this publication are those of the contributors concerned and are not necessarily those held by the Royal Air Force Historical Society. Photographs credited to MAP have been reproduced by kind permission of Military Aircraft Photographs. Copies of these, and of many others, may be obtained via http://www.mar.co.uk Copyright 2001: Royal Air Force Historical Society First published in the UK in 2001 by the Royal Air Force Historical Society All rights reserved. No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical including photocopying, recording or by any information storage and retrieval system, without permission from the Publisher in writing. ISSN 1361-4231 Typeset by Creative Associates 115 Magdalen Road Oxford OX4 1RS Printed by Professional Book Supplies Ltd 8 Station Yard Steventon Nr Abingdon OX13 6RX 3 CONTENTS THE PROCEEDINGS OF THE RAFHS SEMINAR ON 7 HELICOPTERS IN THE ROYAL AIR FORCE BOOK REVIEWS 112 4 ROYAL AIR FORCE HISTORICAL SOCIETY President Marshal of the Royal Air Force Sir Michael Beetham GCB CBE DFC AFC Vice-President Air Marshal Sir Frederick Sowrey KCB CBE AFC Committee Chairman Air Vice-Marshal N B Baldwin CB CBE FRAeS Vice-Chairman Group Captain J D Heron OBE Secretary Group Captain K J Dearman Membership Secretary Dr Jack Dunham PhD CPsychol AMRAeS Treasurer Desmond Goch Esq FCCA Members Air Commodore H A Probert MBE MA *J S Cox Esq BA MA *Dr M A Fopp MA FMA FIMgt *Group Captain P Gray
    [Show full text]
  • International Fire Aviation Guidelines
    Fire Aviation Guidelines Part 2 (STATUS – DEVELOPMENT DRAFT 01 OCTOBER 2017) International Fire Aviation Working Group DRAFT Fire Aviation Guidelines Part 2 International Manual of Common Rules for Fire Aviation Please ignore highlighting and shading in this DRAFT. This part of an internal editing change control process and will be removed prior to publishing. PLEASE NOTE: THIS COPY OF THE DRAFT FIRE AVIATION GUIDELINES IS PROVIDED FOR INFORMATION ONLY AND SHOULD NOT BE FURTHER DISTRIBUTED. THE MATERIAL IN THIS DRAFT IS PRELIMINARY AND IS SUBJECT TO FURTHER EDITING AND APPROVAL BY IFAWG International Fire Aviation Working Group Fire Aviation Guidelines incorporating the International Manual of Common Rules for Fire Aviation Part 2 DRAFT V1.3 v1 ) October 2017 Page 1 of 102 This International Manual of Common Rules (IMCR) forms Part 2 of the Fire Aviation Guidelines. The purpose of the IMCR is to provide more detailed guidance for implementing the principles and strategies outlined in Part 1 of the Fire Aviation Guidelines (the Framework document). This document is intended to be able to stand alone, however the reader will find background and contextual information as well as key definitions in Part 1 of the Fire Aviation Guidelines.. For further information, please contact: UNISDR International Fire Aviation Working Group Secretariat: The Global Fire Monitoring Center (GFMC) Fire Ecology Research Group c/o Freiburg University Georges-Koehler-Allee 75 79110 Freiburg Tel: +49-761-808011 Fax: +49-761-808012 e-mail: [email protected] International Fire Aviation Working Group Fire Aviation Guidelines incorporating the International Manual of Common Rules for Fire Aviation Part 2 DRAFT V1.3 v1 ) October 2017 Page 2 of 102 Contents Fire Aviation Guidelines – Part 2 International Manual of Common Rules LIST OF PAGES AND UPDATES............................................................................................................................
    [Show full text]
  • The Evolution of the British Rotorcraft Industry 1842-2012
    Journal of Aeronautical History Paper No. 2012/07 THE EVOLUTION OF THE BRITISH ROTORCRAFT INDUSTRY 1842-2012 Eur Ing David Gibbings C Eng., FRAeS Based on a paper originally presented to the European Rotorcraft Forum in Hamburg, September 2009. ABSTRACT This paper relates the way in which rotorcraft developed in Britain, leading to the growth of an effective design and manufacturing industry. The narrative is divided into five sections, each of which represents defining phases in UK based activity leading towards the development of the modern helicopter: 1. The Pre-Flight Period (1842-1903) This section covers British activity during the period when the objective was simply to demonstrate powered flight by any means, and where rotors might be considered to be a way of achieving this. 2. The Early Helicopter Period (1903-1926). Early attempts to build helicopters, including the work of Louise Brennan, which achieved limited success with a rotor driven by a propellers mounted on the blade tips. 3. The Pre-War Years (1926-1939) This section gives emphasis to development of the gyroplane and in particular the work of Juan de la Cierva, with his UK-based company to develop his 'Autogiro', from which the understanding of rotor dynamics and control was established, and which was to lead to the realisation of the helicopter by others. Although UK rotary wing development was driven by the gyroplane, the work carried out by the Weir Company, which was to lead to the first successful British helicopter is discussed. 4. The War Years. (1939-1945) Rotary wing activities in the UK were very limited during World War 2, restricted to the work carried out by Raoul Hafner with the Rotachute/ Rotabuggy programme and the use of autogiros for the calibration of radar.
    [Show full text]
  • Airframe Vibration, Wollongong Aerodrome, NSW, 11 June 2008
    11 June 2008, VH-UAH, Bell Helicopter Co. 412 Bell Helicopter June 2008, VH-UAH, 11 NSW Aerodrome, Airframe vibration, Wollongong ATSB TRANSPORT SAFETY REPORT Aviation Occurrence Investigation AO-2008-039 Final Airframe vibration Wollongong Aerodrome, NSW 11 June 2008 VH-UAH, Bell Helicopter Co. 412 ATSB TRANSPORT SAFETY REPORT Aviation Occurrence Investigation AO-2008-039 Final Airframe vibration Wollongong Aerodrome, New South Wales 11 June 2008 VH-UAH, Bell Helicopter Co. 412 Released in accordance with section 25 of the Transport Safety Investigation Act 2003 - i - Published by: Australian Transport Safety Bureau Postal address: PO Box 967. Civic Square ACT 2608 Office location: 62 Northbourne Ave, Canberra City, Australian Capital Territory, 2601 Telephone: 1800 020 616, from overseas +61 2 6257 4150 Accident and incident notification: 1800 011 034 (24 hours) Facsimile: 02 6247 3117, from overseas +61 2 6247 3117 Email: [email protected] Internet: www.atsb.gov.au © Commonwealth of Australia 2010. This work is copyright. In the interests of enhancing the value of the information contained in this publication you may copy, download, display, print, reproduce and distribute this material in unaltered form (retaining this notice). However, copyright in the material obtained from other agencies, private individuals or organisations, belongs to those agencies, individuals or organisations. Where you want to use their material you will need to contact them directly. Subject to the provisions of the Copyright Act 1968, you must not make any other use of the material in this publication unless you have the permission of the Australian Transport Safety Bureau. Please direct requests for further information or authorisation to: Commonwealth Copyright Administration, Copyright Law Branch Attorney-General’s Department, Robert Garran Offices, National Circuit, Barton, ACT 2600 www.ag.gov.au/cca ISBN and formal report title: see ‘Document retrieval information’ on page iv - ii - CONTENTS THE AUSTRALIAN TRANSPORT SAFETY BUREAU .................................
    [Show full text]
  • JP 3-04.1 JTTP for Shipboard Helicopter Operations
    JOINT PUB 3-04.1 JOINT TACTICS, TECHNIQUES, AND PROCEDURES FOR SHIPBOARD HELICOPTER OPERATIONS 28 JUNE 1993 A large body of joint doctrine (and its supporting tactics, techniques, and procedures) has been and is being developed by the US Armed Forces through the combined efforts of the Joint Staff, Services, and combatant commands. The following chart displays an overview of the development process for these publications. MAKING A JOINT PUB ., PROJECT PROPOSAL All joint doctrine and tactics, techniques, and procedures are organized into a comprehensive hierarchy. Joint Pub 3–04 .1 is located in the operations series of joint publications . Joint Pub 1–01, "Joint Publication System, " provides a detailed list of all joint publications. Joint pubs are also available on CD–ROM through the Joint Electronic Library (JEL) . For information, contact : Joint Doctrine Division, J-7, 7000 Joint Staff Pentagon Washington, D. C. 20318–7000 . OFFICE OF THE CHAIRMAN THE JOINT CHIEFS OF STAFF WASHINGTON, D.C. 20319-0001 Reply ZIP Code: Joint Pub 3-04.1 20318-0400 28 June 1993 MEMORANDUM FOR: Distribution List Subject: Joint Pub 3-04.1, "Joint Tactics, Techniques, and Procedures for Shipboard Helicopter Operations" 1. This publication has been prepared under the direction of the Chairman of the Joint Chiefs of Staff. It sets forth joint tactics, techniques, and procedures for the activities and employment of the Armed Forces of the United States during shipboard helicopter operations. 2. Recommendations for changes to this publication should be submitted to the Director for Operational Plans and Interoperability (J-7), Joint Staff, Washington, D.C.
    [Show full text]
  • Helicopter Flying Handbook (FAA-H-8083-21B)
    Chapter 11 Helicopter Emergencies and Hazards Introduction Today, helicopters are quite reliable. However, emergencies do occur, whether a result of mechanical failure or pilot error, and should be anticipated. Regardless of the cause, the recovery needs to be quick and precise. By having a thorough knowledge of the helicopter and its systems, a pilot is able to handle the situation more readily. Helicopter emergencies and the proper recovery procedures should be discussed and, when possible, practiced in flight. In addition, by knowing the conditions that can lead to an emergency, many potential accidents can be avoided. 11-1 Autorotation Several factors affect the rate of descent in autorotation: bank angle, density altitude, gross weight, rotor rpm, trim In a helicopter, an autorotative descent is a power-off condition, and airspeed. The primary ways to control the rate maneuver in which the engine is disengaged from the of descent are with airspeed and rotor rpm. Higher or lower main rotor disk and the rotor blades are driven solely by airspeed is obtained with the cyclic pitch control just as in the upward flow of air through the rotor. [Figure 11-1] In normal powered flight. In theory, a pilot has a choice in the other words, the engine is no longer supplying power to angle of descent, varying, from straight vertical to maximum the main rotor. horizontal range (which is the minimum angle of descent). Rate of descent is high at zero airspeed and decreases to a The most common reason for an autorotation is failure of the minimum at approximately 50–60 knots, depending upon the engine or drive line, but autorotation may also be performed particular helicopter and the factors just mentioned.
    [Show full text]