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University of Oklahoma Graduate College Design and Performance Evaluation of a Retractable Wingtip Vortex Reduction Device a Th
UNIVERSITY OF OKLAHOMA GRADUATE COLLEGE DESIGN AND PERFORMANCE EVALUATION OF A RETRACTABLE WINGTIP VORTEX REDUCTION DEVICE A THESIS SUBMITTED TO THE GRADUATE FACULTY In partial fulfillment of the requirements for the Degree of Master of Science Mechanical Engineering By Tausif Jamal Norman, OK 2019 DESIGN AND PERFORMANCE EVALUATION OF A RETRACTABLE WINGTIP VORTEX REDUCTION DEVICE A THESIS APPROVED FOR THE SCHOOL OF AEROSPACE AND MECHANICAL ENGINEERING BY THE COMMITTEE CONSISTING OF Dr. D. Keith Walters, Chair Dr. Hamidreza Shabgard Dr. Prakash Vedula ©Copyright by Tausif Jamal 2019 All Rights Reserved. ABSTRACT As an airfoil achieves lift, the pressure differential at the wingtips trigger the roll up of fluid which results in swirling wakes. This wake is characterized by the presence of strong rotating cylindrical vortices that can persist for miles. Since large aircrafts can generate strong vortices, airports require a minimum separation between two aircrafts to ensure safe take-off and landing. Recently, there have been considerable efforts to address the effects of wingtip vortices such as the categorization of expected wake turbulence for commercial aircrafts to optimize the wait times during take-off and landing. However, apart from the implementation of winglets, there has been little effort to address the issue of wingtip vortices via minimal changes to airfoil design. The primary objective of this study is to evaluate the performance of a newly proposed retractable wingtip vortex reduction device for commercial aircrafts. The proposed design consists of longitudinal slits placed in the streamwise direction near the wingtip to reduce the pressure differential between the pressure and the suction sides. -
United States Air Force and Its Antecedents Published and Printed Unit Histories
UNITED STATES AIR FORCE AND ITS ANTECEDENTS PUBLISHED AND PRINTED UNIT HISTORIES A BIBLIOGRAPHY EXPANDED & REVISED EDITION compiled by James T. Controvich January 2001 TABLE OF CONTENTS CHAPTERS User's Guide................................................................................................................................1 I. Named Commands .......................................................................................................................4 II. Numbered Air Forces ................................................................................................................ 20 III. Numbered Commands .............................................................................................................. 41 IV. Air Divisions ............................................................................................................................. 45 V. Wings ........................................................................................................................................ 49 VI. Groups ..................................................................................................................................... 69 VII. Squadrons..............................................................................................................................122 VIII. Aviation Engineers................................................................................................................ 179 IX. Womens Army Corps............................................................................................................ -
Aviation Glossary
AVIATION GLOSSARY 100-hour inspection – A complete inspection of an aircraft operated for hire required after every 100 hours of operation. It is identical to an annual inspection but may be performed by any certified Airframe and Powerplant mechanic. Absolute altitude – The vertical distance of an aircraft above the terrain. AD - See Airworthiness Directive. ADC – See Air Data Computer. ADF - See Automatic Direction Finder. Adverse yaw - A flight condition in which the nose of an aircraft tends to turn away from the intended direction of turn. Aeronautical Information Manual (AIM) – A primary FAA publication whose purpose is to instruct airmen about operating in the National Airspace System of the U.S. A/FD – See Airport/Facility Directory. AHRS – See Attitude Heading Reference System. Ailerons – A primary flight control surface mounted on the trailing edge of an airplane wing, near the tip. AIM – See Aeronautical Information Manual. Air data computer (ADC) – The system that receives and processes pitot pressure, static pressure, and temperature to present precise information in the cockpit such as altitude, indicated airspeed, true airspeed, vertical speed, wind direction and velocity, and air temperature. Airfoil – Any surface designed to obtain a useful reaction, or lift, from air passing over it. Airmen’s Meteorological Information (AIRMET) - Issued to advise pilots of significant weather, but describes conditions with lower intensities than SIGMETs. AIRMET – See Airmen’s Meteorological Information. Airport/Facility Directory (A/FD) – An FAA publication containing information on all airports, seaplane bases and heliports open to the public as well as communications data, navigational facilities and some procedures and special notices. -
2007 Lnstim D'hi,Stoire Du Temp
WORLD "TAR 1~WO STlIDIES ASSOCIATION (formerly American Committee on the History ofthe Second World War) Mark P. l'arilIo. Chai""an Jona:han Berhow Dl:pat1menlofHi«ory E1izavcla Zbeganioa 208 Eisenhower Hall Associare Editors KaDsas State University Dct>artment ofHistory Manhattan, Knnsas 66506-1002 208' Eisenhower HnJl 785-532-0374 Kansas Stale Univemty rax 785-532-7004 Manhattan, Kansas 66506-1002 parlllo@,'<su.edu Archives: Permanent Directors InstitlJle for Military History and 20" Cent'lly Studies a,arie, F. Delzell 22 J Eisenhower F.all Vandcrbijt Fai"ersity NEWSLETTER Kansas State Uoiversit'j Manhattan, Kansas 66506-1002 Donald S. Detwiler ISSN 0885·-5668 Southern Ulinoi' Va,,,,,,,sity The WWT&« is a.fIi!iilI.etf witJr: at Ccrbomlale American Riston:a1 A."-'iociatioG 400 I" Street, SE. T.!rms expiring 100(, Washingtoo, D.C. 20003 http://www.theah2.or9 Call Boyd Old Dominio" Uaiversity Comite internationa: dlli.loire de la Deuxii:me G""",, Mondiale AI"".nde< CochrnIl Nos. 77 & 78 Spring & Fall 2007 lnstiM d'Hi,stoire du Temp. PreSeDt. Carli5te D2I"n!-:'ks, Pa (Centre nat.onal de I. recberche ,sci,,,,tifiqu', [CNRSJ) Roj' K. I'M' Ecole Normale S<rpeneure de Cach411 v"U. Crucis, N.C. 61, avenue du Pr.~j~'>Ut WiJso~ 94235 Cacllan Cedex, ::'C3nce Jolm Lewis Gaddis Yale Universit}' h<mtlJletor MUitary HL'mry and 10'" CenJury Sllldie" lIt Robin HiRbam Contents KaIUa.r Stare Universjly which su!'prt. Kansas Sl.ll1e Uni ....ersity the WWTSA's w-'bs;te ":1 the !nero.. at the following ~ljjrlrcs:;: (URL;: Richa.il E. Kaun www.k··stare.eDu/his.tD.-y/instltu..:..; (luive,.,,)' of North Carolw. -
Afghanistan Remittance Overview and Trends Annex to Afghanistan Migration Profile
Afghanistan Remittance Overview and Trends Annex to Afghanistan Migration Profile AFGHANISTAN REMITTANCE OVERVIEW AND TRENDS ANNEX TO AFGHANISTAN MIGRATION PROFILE Prepared for the International Organization for Migration (IOM) by Michaella Vanore Katrin Marchand CONTENTS List of Tables ...................................................................................6 List of Figures .................................................................................6 Acronyms .......................................................................................7 Foreword ........................................................................................9 Executive Summary ......................................................................11 1. Introduction .............................................................................19 2. Current Knowledge and Remittance Trends ..............................21 2.1. Measuring Remittances: Methodological Challenges ......................21 2.2. Remittances in Afghanistan: Current State of Knowledge ................25 2.2.1. Remittance Flows: Balance of Payment Statistics ....................25 2.2.2. Remittance Flows: Household Surveys .................................... 28 2.2.3. Remittance Flows: Case Studies ...............................................33 3. Remittance Infrastructure and Management Frameworks ........39 3.1. Remittance Channels ....................................................................... 39 3.1.1. Banks and Microfinance Institutions ....................................... -
Military & Maritime Catalog
SCHIFFER P U B L I S H I N G Military & Maritime Catalog AUTUMN/WINTER 2014 aviation: 18 naval: 43 ground forces: 45 militaria: 61 modeling & collectible figures: 76 American Civil War: 78 Cornell Maritime Press: 79 pin-ups: 86 transportation: 88 2 NEW BOOKS MARTIN B-26 MARAUDER: The Ultimate Look: From Drawing William Wolf Board to Widow Maker Vindicated • Fifth in the Ultimate Look bomber series • Photo coverage of the NMUSAF and MAPS restored B-26s • 20 color profiles of some of the most notable of the B-26 series In his fifth book in The Ultimate Look series, Dr. Wolf again brings the same degree of meticulous research to describe this unappreciated and misunderstood B-26 medium bomber. This massive, comprehensive volume is the first to give the reader a definitive description of this neglected bomber, its development, testing, and manufacture. The role of the enigmatic aviation icon Glenn L. Martin is described in the development of the American aviation industry and the Marauder. The author made extensive use of the massive document and photo collections of the Marauder Archives at Akron and Tucson, and the Air Force collection at the NMUSAF. Martin Company design and production information and flight and test evaluations, along with original Company Flight, Parts, and Maintenance Manuals, and rare archival microfilm of original material were also used. The author was given unprecedented access to the family records of B-26 designer Peyton Magruder. The text is complemented by archival photos and drawings, and new color photos of the Marauders at the NMUSAF, Fantasy of Flight, and MAPS Museum. -
Almanac ■ Guide to Air Force Installations Worldwide
USAFAlmanac ■ Guide to Air Force Installations Worldwide Major Installations Note: A major installation is an Air Force Base, Air Andrews AFB, Md. 20762-5000; 10 mi. SE of 4190th Wing, Pisa, Italy; 31st Munitions Support Base, Air Guard Base, or Air Reserve Base that Washington, D. C. Phone (301) 981-1110; DSN Sqdn., Ghedi AB, Italy; 4190th Air Base Sqdn. serves as a self-supporting center for Air Force 858-1110. AMC base. Gateway to the nation’s (Provisional), San Vito dei Normanni, Italy; 496th combat, combat support, or training operations. capital and home of Air Force One. Host wing: 89th Air Base Sqdn., Morón AB, Spain; 731st Munitions Active-duty, Air National Guard (ANG), or Air Force Airlift Wing. Responsible for Presidential support Support Sqdn., Araxos AB, Greece; 603d Air Control Reserve Command (AFRC) units of wing size or and base operations; supports all branches of the Sqdn., Jacotenente, Italy; 48th Intelligence Sqdn., larger operate the installation with all land, facili- armed services, several major commands, and Rimini, Italy. One of the oldest Italian air bases, ties, and support needed to accomplish the unit federal agencies. The wing also hosts Det. 302, dating to 1911. USAF began operations in 1954. mission. There must be real property accountability AFOSI; Hq. Air Force Flight Standards Agency; Area 1,467 acres. Runway 8,596 ft. Altitude 413 through ownership of all real estate and facilities. AFOSI Academy; Air National Guard Readiness ft. Military 3,367; civilians 1,102. Payroll $156.9 Agreements with foreign governments that give Center; 113th Wing (D. C. -
The Mobility Forum
THE MOBILITYTHE MAGAZINE OF AIR MOBILITY COMMAND | SUMMER 2014 FORUM The Evolution of The Mobility Forum AMC WELCOMES NEW LEADERS Volume 23, No. 2 Summer 2014 AIR MOBILITY COMMAND Gen Darren McDew IN THIS ISSUE ON THE COVER I AMC NEWS 3 AMC Introduces New Commander DIRECTOR OF SAFETY 3 New AMC Command Chief Col Paul Murphy Connects with Airmen [email protected] 4 60th Anniversary: The Evolution of The Mobility Forum 6 20 Years of Excellence: The U.S. EDITORS Air Force Expeditionary Center Sherrie Schatz 16 Rogue 52: Mission to Sheree Lewis South Sudan [email protected] 24 What Happened Aboard Shell Graphic Design 77? AIB Determines Cause of Elizabeth Bailey KC-135 Crash 28 MAF Electronic Flight Bag: Data Fusion in the Hands of The Mobility Forum (TMF) is published four times a year by the Director of Safety, Air Each MAF Aircrew Member Mobility Command, Scott AFB, IL. The con- 36 Yearlong Effort Shifts U.S.’ Joint Base Charleston received the last C-17 tents are informative and not regulatory or Main Afghanistan Air Hub to Globemaster III, P-223, during a delivery directive. Viewpoints expressed are those of the authors and do not necessarily reflect the MK, Romania ceremony Sept. 12, 2013, on the flight line at Joint Base Charleston, S.C. DE policy of AMC, USAF, or any DoD agency. I FLIGHT SAFETY USAF PHOTO BY A1C CHACARRA NEAL Contributions: Please email articles and 8 What Could Possibly Happen? photos to [email protected], fax to (580) 628-2011 or mail to Schatz Publishing, RISK MANAGEMENT REGULAR FEATURES 11950 W. -
Designing Unmanned Aircraft Systems: a Comprehensive Approach
Designing Unmanned Aircraft Systems: A Comprehensive Approach Jay Gundlach Aurora Flight Sciences Manassas, Virginia AIAA EDUCATION SERIES Joseph A. Schetz, Editor-in-Chief Virginia Polytechnic Institute and State University Blacksburg, Virginia Published by the American Institute of Aeronautics and Astronautics, Inc. 1801 Alexander Bell Drive, Reston, Virginia 20191-4344 NOMENCLATURE Item Definition A area; availability; ground area covered in a mission; radar antenna area, m2; conversion between radians and minutes of arc Aa achieved availability Abound bounded area for a closed section 2 Ad IR detector sensitive area, m 2 Aeff effective antenna area, length Ai inherent availability AO operational availability; UA availability 2 Ap propeller disk area, length ARate area coverage rate Ar effective collection area of optical receiver ASurf surface area AR aspect ratio ARWet wetted aspect ratio AR0 aspect ratio along spanwise path a UA acceleration; maximum fuselage cross-section width; speed of sound; detector characteristic dimension awa radar mainlobe width metric awr radar mainlobe width metric ax acceleration along the x direction (acceleration) B acuity gain due to binoculars; boom area; effective noise bandwidth of receiving process, Hz 21 BDoppler Doppler bandwidth (time ) BN effective noise bandwidth of the receiving process 21 BT radar signal bandwidth (time ) BSFCSL brake specific fuel consumption at sea level b web length; wing span; maximum fuselage cross- section height bw wing span b0 span without dihedral C cost of contractor -
Historical Brief Installations and Usaaf Combat Units In
HISTORICAL BRIEF INSTALLATIONS AND USAAF COMBAT UNITS IN THE UNITED KINGDOM 1942 - 1945 REVISED AND EXPANDED EDITION OFFICE OF HISTORY HEADQUARTERS THIRD AIR FORCE UNITED STATES AIR FORCES IN EUROPE OCTOBER 1980 REPRINTED: FEBRUARY 1985 FORE~ORD to the 1967 Edition Between June 1942 ~nd Oecemhcr 1945, 165 installations in the United Kingdom were used by combat units of the United States Army Air I"orce~. ;\ tota) of three numbered .,lr forl'es, ninc comllklnds, frJur ;jfr divi'iions, )} w1.l\~H, Illi j(r,IUpl', <lnd 449 squadron!'! were at onE' time or another stationed in ',r'!;rt r.rftaIn. Mnny of tlal~ airrll'lds hnvc been returned to fann land, others havl' houses st.lnding wh~rr:: t'lying Fortr~ss~s and 1.lbcratorR nllce were prepared for their mis.'ilons over the Continent, Only;l few rcm:l.1n ;IS <Jpcr.Jt 11)11., 1 ;'\frfll'ldH. This study has been initl;ltcd by the Third Air Force Historical Division to meet a continuin~ need for accurate information on the location of these bases and the units which they served. During the pas t several years, requests for such information from authors, news media (press and TV), and private individuals has increased. A second study coverin~ t~e bases and units in the United Kingdom from 1948 to the present is programmed. Sources for this compilation included the records on file in the Third Air Force historical archives: Maurer, Maurer, Combat Units of World War II, United States Government Printing Office, 1960 (which also has a brief history of each unit listed); and a British map, "Security Released Airfields 1n the United Kingdom, December 1944" showing the locations of Royal Air Force airfields as of December 1944. -
Suicide Attacks in Afghanistan: Why Now?
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Political Science Department -- Theses, Dissertations, and Student Scholarship Political Science, Department of Spring 5-2013 SUICIDE ATTACKS IN AFGHANISTAN: WHY NOW? Ghulam Farooq Mujaddidi University of Nebraska-Lincoln Follow this and additional works at: https://digitalcommons.unl.edu/poliscitheses Part of the Comparative Politics Commons, and the International Relations Commons Mujaddidi, Ghulam Farooq, "SUICIDE ATTACKS IN AFGHANISTAN: WHY NOW?" (2013). Political Science Department -- Theses, Dissertations, and Student Scholarship. 25. https://digitalcommons.unl.edu/poliscitheses/25 This Article is brought to you for free and open access by the Political Science, Department of at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Political Science Department -- Theses, Dissertations, and Student Scholarship by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. SUICIDE ATTACKS IN AFGHANISTAN: WHY NOW? by Ghulam Farooq Mujaddidi A THESIS Presented to the Faculty of The Graduate College at the University of Nebraska In Partial Fulfillment of Requirements For the Degree of Master of Arts Major: Political Science Under the Supervision of Professor Patrice C. McMahon Lincoln, Nebraska May, 2013 SUICIDE ATTACKS IN AFGHANISTAN: WHY NOW? Ghulam Farooq Mujaddidi, M.A. University of Nebraska, 2013 Adviser: Patrice C. McMahon Why, contrary to their predecessors, did the Taliban resort to use of suicide attacks in the 2000s in Afghanistan? By drawing from terrorist innovation literature and Michael Horowitz’s adoption capacity theory—a theory of diffusion of military innovation—the author argues that suicide attacks in Afghanistan is better understood as an innovation or emulation of a new technique to retaliate in asymmetric warfare when insurgents face arms embargo, military pressure, and have direct links to external terrorist groups. -
BIOGRAPHICAL DATA BOO KK Class 2020-2 27
BBIIOOGGRRAAPPHHIICCAALL DDAATTAA BBOOOOKK Class 2020-2 27 Jan - 28 Feb 2020 National Defense University NDU PRESIDENT Vice Admiral Fritz Roegge, USN 16th President Vice Admiral Fritz Roegge is an honors graduate of the University of Minnesota with a Bachelor of Science in Mechanical Engineering and was commissioned through the Reserve Officers' Training Corps program. He earned a Master of Science in Engineering Management from the Catholic University of America and a Master of Arts with highest distinction in National Security and Strategic Studies from the Naval War College. He was a fellow of the Massachusetts Institute of Technology Seminar XXI program. VADM Fritz Roegge, NDU President (Photo His sea tours include USS Whale (SSN 638), USS by NDU AV) Florida (SSBN 728) (Blue), USS Key West (SSN 722) and command of USS Connecticut (SSN 22). His major command tour was as commodore of Submarine Squadron 22 with additional duty as commanding officer, Naval Support Activity La Maddalena, Italy. Ashore, he has served on the staffs of both the Atlantic and the Pacific Submarine Force commanders, on the staff of the director of Naval Nuclear Propulsion, on the Navy staff in the Assessments Division (N81) and the Military Personnel Plans and Policy Division (N13), in the Secretary of the Navy's Office of Legislative Affairs at the U. S, House of Representatives, as the head of the Submarine and Nuclear Power Distribution Division (PERS 42) at the Navy Personnel Command, and as an assistant deputy director on the Joint Staff in both the Strategy and Policy (J5) and the Regional Operations (J33) Directorates.