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FAA Advisory Circular 20-97B
Subject: AIRCRAFT TIRE MAINTENANCE Date: 4/18/05 AC No.: 20-97B AND OPERATIONAL PRACTICES Initiated by: AFS-306 Change: 1. PURPOSE. This advisory circular (AC) provides recommended tire care and maintenance practices needed to assure the safety of support personnel and the continued airworthiness of aircraft. Specifically, this AC provides guidance on the installation, inflation, maintenance, and removal of aircraft tires. In addition, this AC provides guidance on those operational practices necessary to maintain safe aircraft operations. This AC is not mandatory and does not constitute a regulation. It is issued for guidance purposes and to outline acceptable tire maintenance and operational practices. In lieu of following this method without deviation, operators may elect to follow an alternative method that has also been found acceptable by the Federal Aviation Administration (FAA). 2. CANCELLATION. AC 20-97A, High-Speed Tire Maintenance and Operational Practices, dated May 13, 1987, is cancelled. 3. RELATED REGULATIONS AND DOCUMENTS. a. Title 14 of the Code of Federal Regulations (14 CFR): (1) Part 21, subpart O, Technical Standard Order Authorizations. (2) Part 23, Airworthiness Standards: Normal, Utility, Acrobatic, and Commuter Category Airplanes. (3) Part 25, Airworthiness Standards: Transport Category Airplanes. (4) Part 27, Airworthiness Standards: Normal Category Rotorcraft. (5) Part 29, Airworthiness Standards: Transport Category Rotorcraft. (6) Part 43, Maintenance, Preventive Maintenance, Rebuilding, and Alteration. (7) Part 145, Repair Stations. b. FAA ACs. Copies of the following ACs may be obtained from the U.S. Department of Transportation, Subsequent Distribution Center, Ardmore East Business Center, 3341 Q 75th Avenue, Landover, MD 20785, and may be downloaded at the following Web site: http://www.faa.gov/avr/afs/acs/ac-idx.htm. -
Comparison of Aircraft Tire Wear with Initial Wheel Rotational Speed
International Journal of Aviation, Aeronautics, and Aerospace Volume 2 Issue 1 Article 2 3-2-2015 Comparison of Aircraft Tire Wear with Initial Wheel Rotational Speed Abdurrhman A. Alroqi University of Sussex, [email protected] Weiji Wang University of Sussex, [email protected] Follow this and additional works at: https://commons.erau.edu/ijaaa Part of the Aeronautical Vehicles Commons Scholarly Commons Citation Alroqi, A. A., & Wang, W. (2015). Comparison of Aircraft Tire Wear with Initial Wheel Rotational Speed. International Journal of Aviation, Aeronautics, and Aerospace, 2(1). https://doi.org/10.15394/ ijaaa.2015.1043 This Article is brought to you for free and open access by the Journals at Scholarly Commons. It has been accepted for inclusion in International Journal of Aviation, Aeronautics, and Aerospace by an authorized administrator of Scholarly Commons. For more information, please contact [email protected]. Comparison of Aircraft Tire Wear with Initial Wheel Rotational Speed Cover Page Footnote The authors would like to acknowledge University of Sussex for its support with the literature and related resources. This article is available in International Journal of Aviation, Aeronautics, and Aerospace: https://commons.erau.edu/ ijaaa/vol2/iss1/2 Alroqi and Wang: Comparison of Aircraft Tire Wear with Initial Wheel Rotational Speed In this paper, the landing impact of an aircraft is described using a physical model of a single wheel in the main landing gear. The purpose of this study is to understand potential tire-life improvements that could be made by reducing abrasive skidding between aircraft tires and runway surfaces immediately after touchdown. -
Stress Analysis of an Aircraft Fuselage with and Without Portholes Using
cs & Aero ti sp au a n c o e r E e Hadjez and Necib, J Aeronaut Aerospace Eng 2015, 4:1 n A g f i o n Journal of Aeronautics & Aerospace l e DOI: 10.4172/2168-9792.1000138 a e r n i r n u g o J Engineering ISSN: 2168-9792 Research Article Open Access Stress Analysis of an Aircraft Fuselage with and without Portholes using CAD/CAE Process Fayssal Hadjez* and Brahim Necib University of Constantine, Faculty of Science and Technology, Department of Mechanical Engineering, Algeria Abstract The airline industry has been marked by numerous incidents. One of the first, who accompanied the start of operation of the first airliners with jet engines, was directly related to the portholes. Indeed, the banal form of the windows was the source of stress concentrations, which combined with the appearance of micro cracks, caused the explosion in flight of the unit. Since that time, all aircraft openings receive special attention in order to control and reduce their impact on the aircraft structure. In this paper we focus on the representation and quantification of stress concentrations at the windows of a regional jet flying at 40000 feet. To do this, we use a numerical method, similar to what is done at major aircraft manufacturers. The Patran/Nastran software will be used the finite element software to complete our goals. Keywords: Aircraft; Bay; Modeling; Portholes; Fuselage; gradually. It is then necessary to pressurize the cabin to the survival Pressurization; Loads and passenger comfort. However this pressurization is not beneficial to the structure as it involves additional structural loads. -
For Improved Airplane Performance
BLENDED WINGLETS FORFOR IMPROVEDIMPROVED AIRPLANEAIRPLANE PERFORMANCEPERFORMANCE New blended winglets on the Boeing Business Jet and the 737-800 commercial airplane offer operational benefits to customers. Besides giving the airplanes a distinctive appear- ance, the winglets create more efficient flight characteristics in cruise and during takeoff and climbout, which translate into additional range with the same fuel and payload. ROBERT FAYE ROBERT LAPRETE MICHAEL WINTER TECHNICAL DIRECTOR ASSOCIATE TECHNICAL FELLOW PRINCIPAL ENGINEER BOEING BUSINESS JETS AERODYNAMICS TECHNOLOGY STATIC AEROELASTIC LOADS BOEING COMMERCIAL AIRPLANES BOEING COMMERCIAL AIRPLANES BOEING COMMERCIAL AIRPLANES TECHNOLOGY/PRODUCT DEVELOPMENT AERO 16 vertical height of the lifting system (i.e., increasing the length of the TE that sheds the vortices). The winglets increase the spread of the vortices along the TE, creating more lift at the wingtips (figs. 2 and 3). The result is a reduction in induced drag (fig. 4). The maximum benefit of the induced drag reduction depends on the spanwise lift distribution on the wing. Theoretically, for a planar wing, induced drag is opti- mized with an elliptical lift distribution that minimizes the change in vorticity along the span. For the same amount of structural material, nonplanar wingtip 737-800 TECHNICAL CHARACTERISTICS devices can achieve a similar induced drag benefit as a planar span increase; however, new Boeing airplane designs Passengers focus on minimizing induced drag with 3-class configuration Not applicable The 737-800 commercial airplane wingspan influenced by additional 2-class configuration 162 is one of four 737s introduced BBJ TECHNICAL CHARACTERISTICS The Boeing Business Jet design benefits. 1-class configuration 189 in the late 1990s for short- to (BBJ) was launched in 1996 On derivative airplanes, performance Cargo 1,555 ft3 (44 m3) medium-range commercial air- Passengers Not applicable as a joint venture between can be improved by using wingtip Boeing and General Electric. -
Aviation Week & Space Technology
STARTS AFTER PAGE 34 How Air Trvel New Momentum for My Return Smll Nrrowbodies? ™ $14.95 APRIL 20-MAY 3, 2020 SUSTAINABLY Digital Edition Copyright Notice The content contained in this digital edition (“Digital Material”), as well as its selection and arrangement, is owned by Informa. and its affiliated companies, licensors, and suppliers, and is protected by their respective copyright, trademark and other proprietary rights. Upon payment of the subscription price, if applicable, you are hereby authorized to view, download, copy, and print Digital Material solely for your own personal, non-commercial use, provided that by doing any of the foregoing, you acknowledge that (i) you do not and will not acquire any ownership rights of any kind in the Digital Material or any portion thereof, (ii) you must preserve all copyright and other proprietary notices included in any downloaded Digital Material, and (iii) you must comply in all respects with the use restrictions set forth below and in the Informa Privacy Policy and the Informa Terms of Use (the “Use Restrictions”), each of which is hereby incorporated by reference. Any use not in accordance with, and any failure to comply fully with, the Use Restrictions is expressly prohibited by law, and may result in severe civil and criminal penalties. Violators will be prosecuted to the maximum possible extent. You may not modify, publish, license, transmit (including by way of email, facsimile or other electronic means), transfer, sell, reproduce (including by copying or posting on any network computer), create derivative works from, display, store, or in any way exploit, broadcast, disseminate or distribute, in any format or media of any kind, any of the Digital Material, in whole or in part, without the express prior written consent of Informa. -
Sizing and Layout Design of an Aeroelastic Wingbox Through Nested Optimization
Sizing and Layout Design of an Aeroelastic Wingbox through Nested Optimization Bret K. Stanford∗ NASA Langley Research Center, Hampton, VA, 23681 Christine V. Juttey Craig Technologies, Inc., Cape Canaveral, FL, 32920 Christian A. Coker z Mississippi State University, Starkville, MS, 39759 The goals of this work are to 1) develop an optimization algorithm that can simulta- neously handle a large number of sizing variables and topological layout variables for an aeroelastic wingbox optimization problem and 2) utilize this algorithm to ascertain the ben- efits of curvilinear wingbox components. The algorithm used here is a nested optimization, where the outer level optimizes the rib and skin stiffener layouts with a surrogate-based optimizer, and the inner level sizes all of the components via gradient-based optimization. Two optimizations are performed: one restricted to straight rib and stiffener components only, the other allowing curved members. A moderate 1.18% structural mass reduction is obtained through the use of curvilinear members. I. Introduction Layout optimization of a wingbox structure, a form of topology optimization, involves deciding upon the best placement of ribs, spars, and stiffeners within a semimonocoque structure. There are numerous examples of layout design in the literature, including Refs.1-6. Some of these papers adhere to conventional orthogonal layouts of ribs, spars, and stiffeners,3 others blend the roles of these components through angled and/or curved members,2,5,6 and others abandon this convention entirely with a complex network of full- and partial-depth members.1,4 Regardless of how the layout design is conducted, sizing design must be included as well, by optimizing the thickness distribution of the various shell components: ribs, spars, stiffeners, and skins (cover panels). -
Structural Analysis of a Wing Box
L Ferroni Soares et al. Int. Journal of Engineering Research and Applications www.ijera.com ISSN : 2248-9622, Vol. 5, Issue 5, ( Part -4) May 2015, pp.23-31 RESEARCH ARTICLE OPEN ACCESS Structural Analysis of a wing box Structural behavior of aircraft IPUC001-CARCARÁwing Layston Ferroni Soares, Estêvão Guimarães Lapa, Pedro Américo Almeida Magalhães Junior, Bruno Daniel Pignolati Abstract The structural analysis is an important tool that allows the research for weight reduction, the choose of the best materials and to satisfy specifications and requirements. In an aircraft’s design, several analyzes are made to prove that this aircraft will stand the set of maneuvers that it was designed to accomplish. This work will consider the preliminar project of an aircraft seeking to check the behavior of the wing under certain loading conditions in the flight envelope.To get to this load set, it has been done all the process of specification of an aircraft, such as mission definition, calculation of weight and c.g. envelope, definition of the geometric characteristics of the aircraft, the airfoil choice, preliminary performance equations, aerodynamic coefficients and the aircraft’s balancing for the equilibrium condition, but such things will not be considered in this article. For the structural analysis of the wing will be considered an arbitrary flight condition, disregarding the effect of gusts loads. With the acquisition of the items mentioned, the main forces acting on the wing structure and their equations will be calculated. The use of finite element method will enable the application of loads obtained just as the development of a method of calculation, along with the construction of a three-dimensional model that represents a chosen condition. -
Program Schedule
Program Schedule AIAA Science and Technology Forum and Exposition 2015 January 05 - 09, 2015 The Program Report was last updated December 18, 2014 at 04:16 PM EST. To view the most recent meeting schedule online, visit https://aiaa-mst15.abstractcentral.com/planner.jsp Monday, January 05, 2015 Time Session or Event Info 8:00 AM-9:00 AM, Osceola Ballroom CD, PLNRY-01. Opening Keynote , Plenary, Forum 9:00 AM-12:30 PM, St. George 112, ISC-01. International Student Conference (Undergraduate Category), Technical Paper, 53rd AIAA Aerospace Sciences Meeting, Chair: Chris Tavares, The Boeing Company Martian RHOVER Feasibility Study J. Fuentes; R. Pankaja 9:00-9:30 AM Kaluarachchi Satellite Formation Control using Differential Drag S.R. Omar; J.M. 9:30-10:00 AM Wersinger Manufacturing of Triaxial Quasi-three-dimensional Composite 10:00-10:30 AM Materials G. Peterson; D. Liu The Design, Fabrication, and Evaluation of Millimeter Wave Lenses 10:30-11:00 AM for Beamed Energy Applications S.E. Sloan Colorimetric hydrogel-based microfluidic assay system to monitor 11:00-11:30 AM malnutrition in a microgravity environment J.K. Tsosie Significance of Constituent Chemical age on Solid Rocket Propellant 11:30-12:00 PM Regression Rates D.J. Dulin; G.S. Gibson 12:00-12:30 PM Aerodynamic Testing and Development of Sunswift eVe S. Ambrose 9:30 AM-12:30 PM, Miami 2, AA-01. Computational Aeroacoustics I, Technical Paper, 53rd AIAA Aerospace Sciences Meeting, Chair: Walter Eversman, Missouri University of Science and Technology A Computational Study of Flow Within Cavities with Complex 9:30-10:00 AM Geometric Features M.F. -
Aircraft Tire Data
Aircraft tire Engineering Data Introduction Michelin manufactures a wide variety of sizes and types of tires to the exacting standards of the aircraft industry. The information included in this Data Book has been put together as an engineering and technical reference to support the users of Michelin tires. The data is, to the best of our knowledge, accurate and complete at the time of publication. To be as useful a reference tool as possible, we have chosen to include data on as many industry tire sizes as possible. Particular sizes may not be currently available from Michelin. It is advised that all critical data be verified with your Michelin representative prior to making final tire selections. The data contained herein should be used in conjunction with the various standards ; T&RA1, ETRTO2, MIL-PRF- 50413, AIR 8505 - A4 or with the airframer specifications or military design drawings. For those instances where a contradiction exists between T&RA and ETRTO, the T&RA standard has been referenced. In some cases, a tire is used for both civil and military applications. In most cases they follow the same standard. Where they do not, data for both tires are listed and identified. The aircraft application information provided in the tables is based on the most current information supplied by airframe manufacturers and/or contained in published documents. It is intended for use as general reference only. Your requirements may vary depending on the actual configuration of your aircraft. Accordingly, inquiries regarding specific models of aircraft should be directed to the applicable airframe manufacturer. -
Transatlantic Airline Fuel Efficiency Ranking, 2017
WHITE PAPER SEPTEMBER 2018 TRANSATLANTIC AIRLINE FUEL EFFICIENCY RANKING, 2017 Brandon Graver, Ph.D., and Daniel Rutherford, Ph.D. www.theicct.org [email protected] BEIJING | BERLIN | BRUSSELS | SAN FRANCISCO | WASHINGTON ACKNOWLEDGMENTS The authors thank Tim Johnson, Andrew Murphy, Anastasia Kharina, and Amy Smorodin for their review and support. We also acknowledge Airline Data Inc. for providing processed BTS data, and FlightGlobal for Ascend Fleet data. International Council on Clean Transportation 1225 I Street NW Suite 900 Washington, DC 20005 USA [email protected] | www.theicct.org | @TheICCT © 2018 International Council on Clean Transportation TRANSATLANTIC AIRLINE FUEL EFFICIENCY RANKING, 2017 TABLE OF CONTENTS EXECUTIVE SUMMARY ............................................................................................................ iii 1. INTRODUCTION .................................................................................................................... 2 2. METHODOLOGY ................................................................................................................... 3 2.1 Airline selection .................................................................................................................................3 2.2 Fuel burn modeling..........................................................................................................................5 2.3 Fuel efficiency calculation ............................................................................................................6 -
Aircraft Accident at Kajaani Airport, Finland, 3. November 1994
Aircraft accident at Kajaani Airport, Finland, 3. November 1994 Micro-summary: This McDonnell Douglas MD-83 left the runway on landing. Event Date: 1994-11-03 at 0657 local Investigative Body: Finland Accident Investigation Board (AIB), Finland Investigative Body's Web Site: http://www.onnettomuustutkinta.fi/ Cautions: 1. Accident reports can be and sometimes are revised. Be sure to consult the investigative agency for the latest version before basing anything significant on content (e.g., thesis, research, etc). 2. Readers are advised that each report is a glimpse of events at specific points in time. While broad themes permeate the causal events leading up to crashes, and we can learn from those, the specific regulatory and technological environments can and do change. Your company's flight operations manual is the final authority as to the safe operation of your aircraft! 3. Reports may or may not represent reality. Many many non-scientific factors go into an investigation, including the magnitude of the event, the experience of the investigator, the political climate, relationship with the regulatory authority, technological and recovery capabilities, etc. It is recommended that the reader review all reports analytically. Even a "bad" report can be a very useful launching point for learning. 4. Contact us before reproducing or redistributing a report from this anthology. Individual countries have very differing views on copyright! We can advise you on the steps to follow. Aircraft Accident Reports on DVD, Copyright © 2006 by Flight Simulation Systems, LLC All rights reserved. www.fss.aero Major Accident Report Nr 2/1994 Translation of the Finnish original report Aircraft accident at Kajaani Airport, Finland, 3. -
Flight Standardization Board (FSB) Report
U.S. Department of Transportation Federal Aviation Administration Washington, DC Flight Standardization Board (FSB) Report Revision: 6 Date: 04/19/2019 Manufacturer Airbus SAS Type Certificate Marketing TCDS Identifier Pilot Type Rating Data Sheet (TCDS) Name A28NM A318 Series A318 A-320 A319ceo A28NM A319 Series A319neo A-320 A320ceo A28NM A320 Series A320neo A-320 A321ceo A28NM A321 Series A321neo A-320 Approved by: Transport Aircraft Seattle Branch Federal Aviation Administration (FAA) Aircraft Evaluation Division 2200 S. 216th Street, 2nd Floor, North Wing Des Moines, WA 98198 Telephone: (206) 231-3950 Email: 9-AV S [email protected] TABLE OF CONTENTS Section Page 1. RECORD OF REVISIONS ......................................................................................................3 2. INTRODUCTION ....................................................................................................................3 3. HIGHLIGHTS OF CHANGE ..................................................................................................3 4. BACKGROUND ......................................................................................................................3 5. ACRONYMS ............................................................................................................................4 6. DEFINITIONS ..........................................................................................................................5 7. PILOT TYPE RATING ............................................................................................................6