Download or read book Preliminary Airworthiness Evaluation CH 47C with Fiberglass Rotor Blades with T55 L 712 Engines written by and published by . This book was released on 1979 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Preliminary Army Evaluation of a CH-47C helicopter equipped with Fiberglass rotor blades was flown from 31 October through 7 November 1978. A total of 22 hours, 13 of which were productive, was required. Tests were conducted at the Boeing Vertol test facility at Wilmington, Delaware. Fiberglass rotor blades at a rotor speed of 225 rpm have improved hover performance in terms of decreased power required when compared to metal blades at the operating rotor speeds of 235 and 245 rpm. There is an improvement in level flight performance in terms of a reduction in power required between fiberglass blades at a rotor speed of 225 rpm compared to metal blades at a rotor speed of 245 rpm. Handling qualities, for all conditions tested, were essentially the same as with metal rotor blades and are satisfactory. Five shortcomings were identified, only two of which were related to the fiberglass rotor blades. The fiberglass blade related shortcomings were (1) the high six-per-rotor-revolution (6/rev) (22.5 Hz) vibration levels in the vicinity of the cargo hatch and ramp area at light gross weight and airspeeds of 100 knots calibrated airspeed (KCAS) and above; and (2) high vibration levels (3 and 6/rev) throughout the aircraft at airspeeds of 140 KCAS and above. The other shortcomings are standard CH-47C problems that remain unchanged with fiberglass rotor blades and were associated with excessive cabin noise levels, lack of adequate intercom/radio audio gain when using earplugs and poor power management characteristics.
Download or read book Edict du roy contenant exemption et affranchissement de toutes commissions tant royales que de communaut z written by and published by . This book was released on 1567 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1981 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Annual Index written by and published by . This book was released on 1979 with total page 1032 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Download or read book Aeronautical Engineering written by and published by . This book was released on 1981 with total page 822 pages. Available in PDF, EPUB and Kindle. Book excerpt: A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).
Download or read book NASA SP written by and published by . This book was released on 1981 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Annual Index Keyword A L written by and published by . This book was released on 1979 with total page 948 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1981-03 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Skycrane written by John A. McKenna and published by Library of Flight. This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Skycrane was the last creation of aircraft design pioneer Igor Sikorsky. In SKYCRANE: Igor Sikorsky's Last Vision, former Sikorsky Aircraft Executive Vice President John A. McKenna traces the development of this remarkable helicopter from original concept and early sketches to standout performer for the military and private industry. Responsible for building the first S-64 Skycrane in 1961 and for supporting its Army and commercial programs, McKenna has written a comprehensive history chronicling a radically designed helicopter that many thought would not succeed. Indeed, initial versions generated no orders. But General Harry Kinnards vision and advocacy resulted in the Skycranes support of combat operations in Vietnam as part of the groundbreaking concept of supporting Army troops with helicopters rather than trucks. In 1971 Erickson Lumber Company acquired the first Skycrane intended for commercial use to move timber deep in American forests. Owner Jack Erickson later acquired the world manufacturing and support rights to the aircraft creating Erickson Air-Crane Inc. A half century after its first flight the Skycrane continues to save lives, provide essential services, and earn daily profits worldwide. Beautifully illustrated with scores of historical photographs, SKYCRANE features interviews with engineers who designed and tested the helicopter and with Army pilots who flew it during combat in Vietnam. This engagingly written work is the definitive history of a unique and important aircraft.
Download or read book Aeronautical Research in Germany written by Ernst Heinrich Hirschel and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the pioneering glider flights of Otto Lilienthal (1891) to the advanced avionics of today’s Airbus passenger jets, aeronautical research in Germany has been at the forefront of the birth and advancement of aeronautics. On the occasion of the centennial commemoration of the Wright Brother’s first powered flight (December 1903), this English-language edition of Aeronautical Research in Germany recounts and celebrates the considerable contributions made in Germany to the invention and ongoing development of aircraft. Featuring hundreds of historic photos and non-technical language, this comprehensive and scholarly account will interest historians, engineers, and, also, all serious airplane devotees. Through individual contributions by 35 aeronautical experts, it covers in fascinating detail the milestones of the first 100 years of aeronautical research in Germany, within the broader context of the scientific, political, and industrial milieus. This richly illustrated and authoritative volume constitutes a most timely and substantial overview of the crucial contributions to the foundation and advancement of aeronautics made by German scientists and engineers.
Download or read book Helicopter Flight Dynamics written by Gareth D. Padfield and published by John Wiley & Sons. This book was released on 2018-09-07 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Book The behaviour of helicopters and tiltrotor aircraft is so complex that understanding the physical mechanisms at work in trim, stability and response, and thus the prediction of Flying Qualities, requires a framework of analytical and numerical modelling and simulation. Good Flying Qualities are vital for ensuring that mission performance is achievable with safety and, in the first and second editions of Helicopter Flight Dynamics, a comprehensive treatment of design criteria was presented, relating to both normal and degraded Flying Qualities. Fully embracing the consequences of Degraded Flying Qualities during the design phase will contribute positively to safety. In this third edition, two new Chapters are included. Chapter 9 takes the reader on a journey from the origins of the story of Flying Qualities, tracing key contributions to the developing maturity and to the current position. Chapter 10 provides a comprehensive treatment of the Flight Dynamics of tiltrotor aircraft; informed by research activities and the limited data on operational aircraft. Many of the unique behavioural characteristics of tiltrotors are revealed for the first time in this book. The accurate prediction and assessment of Flying Qualities draws on the modelling and simulation discipline on the one hand and testing practice on the other. Checking predictions in flight requires clearly defined mission tasks, derived from realistic performance requirements. High fidelity simulations also form the basis for the design of stability and control augmentation systems, essential for conferring Level 1 Flying Qualities. The integrated description of flight dynamic modelling, simulation and flying qualities of rotorcraft forms the subject of this book, which will be of interest to engineers practising and honing their skills in research laboratories, academia and manufacturing industries, test pilots and flight test engineers, and as a reference for graduate and postgraduate students in aerospace engineering.
Download or read book Rotorcraft Aeromechanics written by Wayne Johnson and published by Cambridge University Press. This book was released on 2013-04-29 with total page 949 pages. Available in PDF, EPUB and Kindle. Book excerpt: A rotorcraft is a class of aircraft that uses large-diameter rotating wings to accomplish efficient vertical take-off and landing. The class encompasses helicopters of numerous configurations (single main rotor and tail rotor, tandem rotors, coaxial rotors), tilting proprotor aircraft, compound helicopters, and many other innovative configuration concepts. Aeromechanics covers much of what the rotorcraft engineer needs: performance, loads, vibration, stability, flight dynamics, and noise. These topics include many of the key performance attributes and the often-encountered problems in rotorcraft designs. This comprehensive book presents, in depth, what engineers need to know about modelling rotorcraft aeromechanics. The focus is on analysis, and calculated results are presented to illustrate analysis characteristics and rotor behaviour. The first third of the book is an introduction to rotorcraft aerodynamics, blade motion, and performance. The remainder of the book covers advanced topics in rotary wing aerodynamics and dynamics.
Download or read book Art of the Helicopter written by John Watkinson and published by Elsevier. This book was released on 2003-12-17 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: The modern helicopter is a sophisticated device which merges a surprising number of technologies together. This wide range of disciplines is one of the fascinations of the helicopter, but it is also makes a complete understanding difficult. Those searching for an understanding of the helicopter will find The Art of the Helicopter invaluable. John Watkinson approaches every subject associated with the helicopter from first principles and builds up in a clearly explained logical sequence using plain English and clear diagrams, avoiding unnecessary mathematics. Technical terms and buzzwords are defined and acronyms are spelled out. Misnomers, myths and old wives tales (for there are plenty surrounding helicopters) are disposed of. Whilst the contents of the book are expressed in straightforward language there is no oversimplification and the content is based on established physics and accepted theory. The student of helicopter technology or aerodynamics will find here a concise introduction leading naturally to more advanced textbooks on the subject. * Designed to complement the instruction of PPL(H) flying training in order to assist helicopter pilots in-training to achieve their "wings". * Clear and simple diagrams aid verbal explanations to provide an easy to understand account of how helicopters are made, how they fly and how to fly them. * The only book to cover all the aspects of helicopter design, manufacture and performance in one volume.
Download or read book G ttinger Monograph N written by Berend van der and published by AIAA (American Institute of Aeronautics & Astronautics). This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Göttinger Monograph N offers an unparalleled view into the early days of helicopter development, where Germany initially led technical innovation. Following World War II, the British Ministry of Supply ordered the German aeronautical research establishments in Göttingen (AVA) and Braunschweig (DFL) to summarize aeronautical research results obtained from 1939 to 1945 in a series of monographs. Göttinger Monograph N was the only of these documents to describe the development, of rotary-wing aircraft. Originally prepared under the direction of Albert Betz by Gerhard Sissingh and O.H. Nagel, the German-language document, now publicly available for the first time entirely in English, has been edited and translated by Berend G. van der Wall. Göttinger Monograph N describes German helicopter and autogyro development, highlighting the involvement of Henrich Focke, Anton Flettner, Friedrich von Doblhoff, and others who brought rotorcraft into series production maturity. It features aircraft including the Fw-61, the Fa-223, the Fa-230, the Fl-339, and more. It explores such areas as testing and accidents, Glauert-Lock-Wheatley's rotary-wing theory, performance investigations, and flying qualities. This unique historical and scientific contribution belongs on the shelf of anyone who seeks to understand the early engineering concepts that underlay the development of rotary-wing aircraft. Book jacket.
Download or read book The Asylum of Howard Hughes written by Jack Garrett Real and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Howard Hughes, once the wealthiest man in the world. Handsome. Daring. Reclusive. Movie producer. Aviation pioneer. Then one fateful day his plane crashed and his world was one of pain. He found relief in drugs and came to rely on them more and more. He became reclusive and inaccessible. He surrounded himself with people to help him create an asylum against the outside world. But they turned it into an asylum of another kind. Hughes turned to the one man he knew he could trust to help him preserve his privacy and retain his freedom. That man became Howard's most trusted confidant and friend, Jack Real. Real tried valiantly to save Hughes from himself and his guards. It was an impossible job but one that Jack G. Real gave his all to accomplish. This is his Story.
Download or read book Tomorrow s War written by David Shukman and published by Houghton Mifflin. This book was released on 1996 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: A chilling look at the weapons that could be part of future wars.
