An Overview of Autogyros and the Mcdonnell XV-1 Convertiplane
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A B C D E F 1 A012 A03009 125 DOMINIE 1.72 AIRCRAFT 2 A009 A05871 1804 STEAM LOCO 1.32 STEAM ENGINE 3 A013 A02447 1905 ROLLS ROYCE 1.32 CAR 4 A002 A02444 1911 ROLLS ROYCE 1.32 CAR 5 A002 A02443 1912 MODEL T FORD 1.32 CAR 6 A002 A02450 1926 MORRIS COWLEY 1.32 CAR 7 A002 A02446 1930 BENTLEY 1.32 CAR 8 ROB A20440 1930 BENTLEY 1.12 CAR 9 A028 A08440 1932 CHRYSLER IMPERIAL 1.25 CAR 10 A002 A02441 1933 ALFA ROMEO 1.32 CAR 11 A002 A01305 25PDR FIELD GUN & MORRIS QUAD 1.76 VEHICLE 12 ROB A02552 2ND DRAGOON 1815 54MM FIGURE 13 ROB 50 YEARS OF THE GREATEST PLASTIC KITS BOOK 14 A013 A02303 88MM GUN & TRACTOR 1.76 VEHICLE 15 ROB A02303 88MM GUN & TRACTOR (D-DAY) 1.76 VEHICLE 16 A026 A06012 A-10 THUNDERBOLT II 1.72 AIRCRAFT 17 ROB ITALERI 097 A-10 WARTHOG 1.72 AIRCRAFT 18 A026 REVELL 04206 A300-600 ST BELUGA 1144 AIRCRAFT 19 A008 A01028 A6M2 ZERO (VJ DAY) 1.72 AIRCRAFT 20 ROB A50127 A6M2B -21 (2011) 1.72 AIRCRAFT PAINTS IN BOX 21 ROB A01005 A6M2B ZERO 1.72 AIRCRAFT 22 A031 REVELL 4366 A-7A CORSAIR 1.72 AIRCRAFT 23 A007 A04211 ADMIRAL GRAF SPEE 1600 SHIP 24 ROB A01314 AEC MATADOR (D-DAY) 1.76 VEHICLE 25 A026 A04046 AH-1 T SEA COBRA 1.72 HELICOPTER 26 A005 A03077 AH-64 APACHE LONGBOW 1.72 HELICOPTER 27 A014 A07101 AH-64 APACHE LONGBOW 1.48 HELICOPTER 28 A026 A04044 AH-64 APACHE LONGBOW 1.72 HELICOPTER 29 A008 A02014 AICHI D3AI VAL (VJ DAY) 1.72 AIRCRAFT 30 ROB AIRFIX 1972 CATALOUGE BOOK 31 ROB AIRFIX 1974 CATALOUGE BOOK 32 ROB AIRFIX 1983 CATALOUGE BOOK 33 ROB A78183 AIRFIX 2007 CATALOUGE BOOK 34 ROB A78184 AIRFIX 2008 CATALOUGE BOOK 35 ROB AIRFIX CLUB -
Assessment of Navy Heavy-Lift Aircraft Options
THE ARTS This PDF document was made available from www.rand.org as a public CHILD POLICY service of the RAND Corporation. CIVIL JUSTICE EDUCATION Jump down to document ENERGY AND ENVIRONMENT 6 HEALTH AND HEALTH CARE INTERNATIONAL AFFAIRS The RAND Corporation is a nonprofit research NATIONAL SECURITY POPULATION AND AGING organization providing objective analysis and effective PUBLIC SAFETY solutions that address the challenges facing the public SCIENCE AND TECHNOLOGY and private sectors around the world. SUBSTANCE ABUSE TERRORISM AND HOMELAND SECURITY TRANSPORTATION AND INFRASTRUCTURE Support RAND WORKFORCE AND WORKPLACE Purchase this document Browse Books & Publications Make a charitable contribution For More Information Visit RAND at www.rand.org Explore RAND National Defense Research Institute View document details Limited Electronic Distribution Rights This document and trademark(s) contained herein are protected by law as indicated in a notice appearing later in this work. This electronic representation of RAND intellectual property is provided for non- commercial use only. Permission is required from RAND to reproduce, or reuse in another form, any of our research documents for commercial use. This product is part of the RAND Corporation documented briefing series. RAND documented briefings are based on research briefed to a client, sponsor, or targeted au- dience and provide additional information on a specific topic. Although documented briefings have been peer reviewed, they are not expected to be comprehensive and may present preliminary findings. Assessment of Navy Heavy-Lift Aircraft Options John Gordon IV, Peter A. Wilson, Jon Grossman, Dan Deamon, Mark Edwards, Darryl Lenhardt, Dan Norton, William Sollfrey Prepared for the United States Navy Approved for public release; unlimited distribution The research described in this report was prepared for the United States Navy. -
National Advisory Committee for Aeronautics
NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS TECHNICAL NOTE 2154 AN ANALYSIS OF TIlE AUTOROTATIVE PERFORMANCE OF A BELICOPTER POWERED BY ROTOR-TIP JET UN[TS By Alfred Gessow Langley Aeronautical Laboratory Langley Air Force Base, Va. Washington July 1950 NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS TECHNICAL NOTE 2l AN ANALYSIS OF THE AUTOROTATIVE PERFORMANCE OF A HELICOPTER POWERED BY ROTOR-TIP JET UNITS By Alfred Gessow SUMMARY The autorotative performance of an assumed helicopter was studied to determine the effect of inoperative jet units located at the rotor- blade tip on the helicopter rate of descent. For a representative ram- jet design, the effect of the jet drag is to increase the minimum rate of descent of the helicopter from about l,OO feet per minute to 3,700 feet per minute when the rotor is operating at a tip speed of approximately 600 feet per second. The effect is less if the rotor operates at lower tip speeds, but the rotor kinetic energy and the stall margin available for the landing maneuver are then reduced. Power-off rates of descent of pulse-jet helicopters would be expected to be less than those of ram- jet.helicopters because pulse jets of current design appear to have greater ratios of net power-on thrust to power-off, drag than currently designed rain jets. Iii order to obtain greater accuracy in studies of autorotative per- forimance, calculations in'volving high power-off rates of descent should include the weight-supporting effect of the fuselage parasite-drag force and the fact that the rotor thrust does not equal the weight of the helicopter. -
Over Thirty Years After the Wright Brothers
ver thirty years after the Wright Brothers absolutely right in terms of a so-called “pure” helicop- attained powered, heavier-than-air, fixed-wing ter. However, the quest for speed in rotary-wing flight Oflight in the United States, Germany astounded drove designers to consider another option: the com- the world in 1936 with demonstrations of the vertical pound helicopter. flight capabilities of the side-by-side rotor Focke Fw 61, The definition of a “compound helicopter” is open to which eclipsed all previous attempts at controlled verti- debate (see sidebar). Although many contend that aug- cal flight. However, even its overall performance was mented forward propulsion is all that is necessary to modest, particularly with regards to forward speed. Even place a helicopter in the “compound” category, others after Igor Sikorsky perfected the now-classic configura- insist that it need only possess some form of augment- tion of a large single main rotor and a smaller anti- ed lift, or that it must have both. Focusing on what torque tail rotor a few years later, speed was still limited could be called “propulsive compounds,” the following in comparison to that of the helicopter’s fixed-wing pages provide a broad overview of the different helicop- brethren. Although Sikorsky’s basic design withstood ters that have been flown over the years with some sort the test of time and became the dominant helicopter of auxiliary propulsion unit: one or more propellers or configuration worldwide (approximately 95% today), jet engines. This survey also gives a brief look at the all helicopters currently in service suffer from one pri- ways in which different manufacturers have chosen to mary limitation: the inability to achieve forward speeds approach the problem of increased forward speed while much greater than 200 kt (230 mph). -
Mathematicians Fleeing from Nazi Germany
Mathematicians Fleeing from Nazi Germany Mathematicians Fleeing from Nazi Germany Individual Fates and Global Impact Reinhard Siegmund-Schultze princeton university press princeton and oxford Copyright 2009 © by Princeton University Press Published by Princeton University Press, 41 William Street, Princeton, New Jersey 08540 In the United Kingdom: Princeton University Press, 6 Oxford Street, Woodstock, Oxfordshire OX20 1TW All Rights Reserved Library of Congress Cataloging-in-Publication Data Siegmund-Schultze, R. (Reinhard) Mathematicians fleeing from Nazi Germany: individual fates and global impact / Reinhard Siegmund-Schultze. p. cm. Includes bibliographical references and index. ISBN 978-0-691-12593-0 (cloth) — ISBN 978-0-691-14041-4 (pbk.) 1. Mathematicians—Germany—History—20th century. 2. Mathematicians— United States—History—20th century. 3. Mathematicians—Germany—Biography. 4. Mathematicians—United States—Biography. 5. World War, 1939–1945— Refuges—Germany. 6. Germany—Emigration and immigration—History—1933–1945. 7. Germans—United States—History—20th century. 8. Immigrants—United States—History—20th century. 9. Mathematics—Germany—History—20th century. 10. Mathematics—United States—History—20th century. I. Title. QA27.G4S53 2008 510.09'04—dc22 2008048855 British Library Cataloging-in-Publication Data is available This book has been composed in Sabon Printed on acid-free paper. ∞ press.princeton.edu Printed in the United States of America 10 987654321 Contents List of Figures and Tables xiii Preface xvii Chapter 1 The Terms “German-Speaking Mathematician,” “Forced,” and“Voluntary Emigration” 1 Chapter 2 The Notion of “Mathematician” Plus Quantitative Figures on Persecution 13 Chapter 3 Early Emigration 30 3.1. The Push-Factor 32 3.2. The Pull-Factor 36 3.D. -
The Fairey Rotodyne
THE FAIREY ROTODYNE The Rotodyne represents an entirely new approach to air transport, and its amazing performance is a triumph for the British Au.i4.ii Industry. It is the first true vertical take-off airliner, and is capable of carrying a full load of passengers or freight, operating from airlicUU no larger than two tennis courts. Unlike the conventional helicopter the Rotodyne is economical to operate, and also capable of much hijr.lin speeds and greater range. The prototype Rotodyne, built under a Ministry of Supply contract, first flew on 6th November, 1957, and achieved its first transition to complete autorotative flight in April, 1958. This prototype, the subject of this model, is capable of carrying 48 passengers or five tun» of freight; the eventual production version will be larger, carrying up to 70 passengers or 8 tons of freight, and will be powered by the more powerful Rolls-Royce Tyne engines in place of the present Elands. A striking demonstration of the Rotodyne's performance was given in January, 1959, when it set up a record 191 m.p.h. on a 100 kin closed circuit. This exceeds the previous record by 49 m.p.h.j and is even 29 m.p.h. faster than the previous absolute speed record for heli- copters. This speed, together with the range of 450 miles, to be increased to 650 miles in the developed version, and of course the weighi lifting and vertical take-off performance, puts the Fairey Rotodyne into a class of its own. Already three airline operators have indicated their intention of buying the Rotodyne, and great interest is being shown by civilian and military operators throughout Europe and America. -
Mathematisches Forschungsinstitut Oberwolfach Emigration Of
Mathematisches Forschungsinstitut Oberwolfach Report No. 51/2011 DOI: 10.4171/OWR/2011/51 Emigration of Mathematicians and Transmission of Mathematics: Historical Lessons and Consequences of the Third Reich Organised by June Barrow-Green, Milton-Keynes Della Fenster, Richmond Joachim Schwermer, Wien Reinhard Siegmund-Schultze, Kristiansand October 30th – November 5th, 2011 Abstract. This conference provided a focused venue to explore the intellec- tual migration of mathematicians and mathematics spurred by the Nazis and still influential today. The week of talks and discussions (both formal and informal) created a rich opportunity for the cross-fertilization of ideas among almost 50 mathematicians, historians of mathematics, general historians, and curators. Mathematics Subject Classification (2000): 01A60. Introduction by the Organisers The talks at this conference tended to fall into the two categories of lists of sources and historical arguments built from collections of sources. This combi- nation yielded an unexpected richness as new archival materials and new angles of investigation of those archival materials came together to forge a deeper un- derstanding of the migration of mathematicians and mathematics during the Nazi era. The idea of measurement, for example, emerged as a critical idea of the confer- ence. The conference called attention to and, in fact, relied on, the seemingly stan- dard approach to measuring emigration and immigration by counting emigrants and/or immigrants and their host or departing countries. Looking further than this numerical approach, however, the conference participants learned the value of measuring emigration/immigration via other less obvious forms of measurement. 2892 Oberwolfach Report 51/2011 Forms completed by individuals on religious beliefs and other personal attributes provided an interesting cartography of Italian society in the 1930s and early 1940s. -
E. E. W.M. PE Velocity Animproved Fight Control Method Is Utilized With
US00572.7754A United States Patent (19) 11 Patent Number: 5,727,754 Carter, Jr. 45) Date of Patent: Mar. 17, 1998 (54 GYROPLANE 4,928,907 5/1990 Zuck, 5,301,900 4/1994 Groen et al. ......................... 244,1725 75) Inventor: Jay W. Carter, Jr. Burkburnett, Tex. 5,462,409 10/1995 Frengley et al. ........................ 416/144 Primary Examiner-Galen L. Barefoot 73) Assignee: CarterCopters, L.L.C.. Wichita Falls, Attorney, Agent, or Fi Felsman, Bradley, Gunter & Tex. Dillon, LLP (21) Appl. No.: 521,690 57 ABSTRACT 22 Filed: Aug. 31, 1995 An improved gyroplane having an improved rotor blade (51) int. Clar. inchwith anper edgewise pound of stiffness aircraft gross(E) ofweight at least and 80,000 blade weightspounds (52) 244/8: 244/75 R; 24.4/17.11 of sufficient size to store a minimum of 100 foot pounds of 58) Field of Search .............................. 244/4 R., 6, 7 R. rotational kinetic energy per pound of gross weight of the 244/17.118 gyroplane while the rotor blade pitch is set to minimum lift during blade prerotation. Then a clutch driving the rotor is 56) References Cited disengaged and the rotor blade pitch is changed to a lift U.S. PATENT DOCUMENTS condition to enable the gyroplane to climb to an altitude of at least fifty feet. The speed and thrust of a propeller is D. 172,712 7/1954 Gebhard ................................. D2/335 increased to achieve an increasing a horizontal velocity to D. 178,598 8/1956 Fletcher. P22 maintain altitude, first with the rotor blade providing most of D. -
Mcdonnell's Model 82- the XV-1 Convertiplane
McDonnell Aircraft XV-1 Convertiplane The Convertiplane was the most publicized product of the Helicopter Division Of McDonnell Aircraft Company, a part of the company that probably few people remember today. Although officially long disbanded, the personnel of that division were still active in the McDonnell- Douglas Corporation, engineering the VTOL and STOL activities for many years. History In December 1948 the McDonnell Aircraft Company (MAC) submitted a preliminary study of high speed rotorcraft to the Office of Naval Research (ONR). MAC's conclusion was that the most promising configuration was one that used its engine to power a propeller for forward flight and to supply compressed air to fuel burning jets on the rotor tips for hovering flight. ONR responded by giving MAC a contract to investigate in more detail the aerodynamic characteristics of lightly loaded rotors at high advance ratios (high forward speeds), to study means of rotor jet propulsion and to apply the practical results of the studies to a high speed ship to shore air vehicle. This last contract fostered two independent, but parallel, projects; the XHCH-1 and more indirectly, the XV-1. The XHCH-1 was a 30 seat vertical takeoff and landing assault aircraft for the Marines. Three articles were ordered (BuAer numbers 133736-738) but the program was canceled when research and development funds ran out. The XV-1 also benefited from this study contract, although it was designed specifically to meet an early 1950 joint Army/ Air Force design competition for VTOL aircraft. The Army goal was to develop a relatively small aircraft for use by Army field forces as a liaison type and to furnish data for future larger designs. -
Introduction of the M-85 High-Speed Rotorcraft Concept Robert H
t NASA Technical Memorandum 102871 Introduction of the M-85 High-Speed Rotorcraft Concept Robert H. Stroub '-] ,t 0 January 1991 National Aeronautics and Space Administration NASATechnicalMemorandum102871 Introduction of the M-85 High-Speed Rotorcraft Concept Robert H. Stroub, Ames Research Center, Moffett Field, California January 1991 NationalAeronautics and Space Administration Ames Research Center Moffett Field, California 94035-1000 ABSTRACT As a result of studying possible requirements for high-speed rotorcrafl and studying many high- speed concepts, a new high-speed rotorcraft concept, designated as M-85, has been derived. The M-85 is a helicopter that is reconfigured to a fixed-wing aircraft for high-speed cruise. The concept was derived as an approach to enable smooth, stable conversion between fixed-wing and rotary-wing while retaining hover and low-speed flight characteristics of a low disk loading helicopter. The name, M-85, reflects the high-speed goal of 0.85 Mach Number at high altitude. For a high-speed rotorcraft, it is expected that a viable concept must be a cruise-efficient, fixed-wing aircraft so it may be attractive for a multiplicity of missions. It is also expected that a viable high-speed rotorcraft con- cept must be cruise efficient first and secondly, efficient in hover. What makes the M-85 unique is the large circular hub fairing that is large enough to support the aircraft during conversion between rotary-wing and fixed-wing modes. With the aircraft supported by this hub fairing, the rotor blades can be unloaded during the 100% change in rotor rpm. With the blades unloaded, the potential for vibratory loads would be lessened. -
November 2018
The Flightline Volume 48, Issue 20 Newsletter of the Propstoppers RC Club AMA 1042 November 2018 President’s Message Hello all, Now that the outdoor season is now pretty much over, I have good news. I have secured permission to use the Brookhaven gym for indoor flying on Saturday nights. The schedule will be, starting in November, 7:00-9:00 pm, the second Saturday after the monthly meeting. I have been giving a lot of thought to different events we can fly, perhaps races for the different classes, carrier landings, and anything else you can think up. As in previous years, we plan to collect $2.00 per person to tip the janitor. After you catch a plane in the lights or rafters, you will know why. I N S I D E T H I S I SSUE On the first night session in November, we will discuss what types 1 President’s Message of planes most people want to fly and establish any size limits and flight categories at that time. November Meeting Agenda 2 I'm looking forward to a good turnout, the more the merrier. Give 3 October Meeting Minutes me a call with any questions or suggestions. Editor’s Note 4 Chuck Kime President Elect Dick Seiwell, President Emeritus 5 By Dave Harding The Philadelphia Region: The Cradle of 6 Rotary-Wing Aviation in the U.S. By Robert Beggs Agenda for November 13th 7. Meeting At Gateway Church Meeting Room 7:00 pm till 8:30 1. Call to Order and Roll Call 2. -
The Cold War and Beyond
Contents Puge FOREWORD ...................... u 1947-56 ......................... 1 1957-66 ........................ 19 1967-76 ........................ 45 1977-86 ........................ 81 1987-97 ........................ 117 iii Foreword This chronology commemorates the golden anniversary of the establishment of the United States Air Force (USAF) as an independent service. Dedicated to the men and women of the USAF past, present, and future, it records significant events and achievements from 18 September 1947 through 9 April 1997. Since its establishment, the USAF has played a significant role in the events that have shaped modem history. Initially, the reassuring drone of USAF transports announced the aerial lifeline that broke the Berlin blockade, the Cold War’s first test of wills. In the tense decades that followed, the USAF deployed a strategic force of nuclear- capable intercontinental bombers and missiles that deterred open armed conflict between the United States and the Soviet Union. During the Cold War’s deadly flash points, USAF jets roared through the skies of Korea and Southeast Asia, wresting air superiority from their communist opponents and bringing air power to the support of friendly ground forces. In the great global competition for the hearts and minds of the Third World, hundreds of USAF humanitarian missions relieved victims of war, famine, and natural disaster. The Air Force performed similar disaster relief services on the home front. Over Grenada, Panama, and Libya, the USAF participated in key contingency actions that presaged post-Cold War operations. In the aftermath of the Cold War the USAF became deeply involved in constructing a new world order. As the Soviet Union disintegrated, USAF flights succored the populations of the newly independent states.