Download or read book Helicopter Maneuverability and Agility Design Sensitivity and Air Combat Maneuver Data Correlation Study written by Thomas H. Lawrence and published by . This book was released on 1991 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: A helicopter maneuverability and agility (M/A) study has been conducted to determine the characteristics of eight different helicopters. This study included a simulation evaluation, analysis of data from the U.S. Army's Air-to-Air Combat Tests (AACT) and a correlation of the two. The results validated previously developed M/A design guidelines and design parameter sensitivities. The helicopters evaluated were the UH-60A, S-76A, AH-64A, AH-1S, OH-58A and SA-365N-1. The CH-53E and Soviet Mi-28 (unclassified) were also analyzed although no AACT data were available for them. The M/A characteristics of these vehicles were assessed by flying detailed, blade element General Helicopter Flight Dynamics Simulation (GenHel) computer models through a series of nine discrete maneuvers. Selected flight test data from AACT II, III and IV were analyzed using a workstation to replay the data and generate synthetic out-of-cockpit views. A method for scoring the simulated maneuvers and the AACT engagements was devised. M/A ratings for all of the subject aircraft were determined using the simulated maneuver scores. Correlation of the M/A ratings to the AACT scores was very good with the winning air combat aircraft having the highest M/A rating in four of the five engagement pairs analyzed. This study also produced a unique database employing a common simulation technology and evaluation methodology for all of the subject helicopters.
Download or read book Helicopter Maneuverability and Agility Design Sensitivity Analysis written by Stuart D. Kershner and published by . This book was released on 1989 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Helicopter Maneuverability and Agility Design Sensitivity Analysis written by John J. Occhiato and published by . This book was released on 1989 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Helicopter Air to Air Combat Test 4 AACT 4 Maneuverability Analysis written by and published by . This book was released on 1992 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the data and findings from the AACT IV flight test program sponsored by AATD. One-on-one air-to-air combat tests of the AH-1S Cobra, AH-64A Apache, SA-365N-1 Dauphin, and 406 Combat Scout helicopters were conducted for maneuverability and agility effectiveness. The tests were flown at the Naval Air Test Center (NATC), Patuxent River, Maryland, from 22 March to 30 April 1987. Flights performed totaled 18, with 22 hours of productive flight time. Total NATC onsite flight time was approximately 87 hours, including instrumentation check flights, maintenance flights, one-on-one familiarization flights, and data flights. The performance of the aircraft involved in AACT IV and analysis of their contributions in an air-to-air environment are discussed. Air vehicle subsystems and other vehicle flight test configuration initiatives used in AACT IV are also described. The AACT IV general findings include: (1) cockpit field of view should be unobstructed and as extensive as possible; (2) time to turn should be minimized for best air combat maneuvering (ACM) performance; (3) high specific excess power at mission weight is necessary for increased maneuverability; (4) the pilot should be given full ACM potential without constant attention to envelope limits; (5) turreted weapons provide added kill probability but do not mitigate maneuverability, and-(6) the performance characteristics of teetering rotor systems during ACM are not conducive to the close-range air-to-air environment. A major shortcoming of the test program was the lack of consistent laser weapon simulator ballistic hit/ miss and aiming error quantitative data.
Download or read book Analysis of Helicopter Air to air Combat Tests written by Kenneth B. Amer and published by . This book was released on 1993 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Army's Aviation Applied Technology Directorate has sponsored a series of helicopter air-to-air combat tests. These tests came about from the belief that a very serious threat to an attack helicopter is another attack helicopter. This paper analyzes the results of these tests to establish the most important helicopter design parameters in terms of maneuverability and agility for superior helicopter air-to-air capability. From the results of these analyses the author concludes that the most important design maneuverability/agility parameters for superior helicopter air-to-air capability are (1) roll angular acceleration per inch of stick travel, (2) roll damping/inertia (inverse of time constant), (3) maximum rate of climb, (4) maximum yaw rate, and (5) cockpit visibility (tandem seating). The impact of the importance of these parameters on the design of a scout/attack helicopter is discussed.
Download or read book Conceptual Design Optimization for Military Helicopter Maneuverability and Agility written by Ho-Sik Kim and published by . This book was released on 1997 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development and Evaluation of an Inverse Solution Technique for Studying Helicopter Maneuverability and Agility written by and published by . This book was released on 1991 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development and Evaluation of an Inverse Solution Technique for Studying Helicopter Maneuverability and Agility written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-08 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: An inverse solution technique for determining the maximum maneuvering performance of a helicopter using smooth, pilotlike control inputs is presented. Also described is a pilot simulation experiment performed to investigate the accuracy of the solution resulting from this technique. The maneuverability and agility capability of the helicopter math model was varied by varying the pitch and roll damping, the maximum pitch and roll rate, and the maximum load-factor capability. Three maneuvers were investigated: a 180-deg turn, a longitudinal pop-up, and a lateral jink. The inverse solution technique yielded accurate predictions of pilot-in-the-loop maneuvering performance for two of the three maneuvers. Whalley, Matthew S. Ames Research Center...
Download or read book NASA SP written by and published by . This book was released on 1991 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aeronautical Engineering written by and published by . This book was released on 1991 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Verti flite written by and published by . This book was released on 1991 with total page 540 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 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flying beyond the stall written by Douglas A. Joyce and published by . This book was released on 2014 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: The X-31 Enhanced Fighter Maneuverability Demonstrator was unique among experimental aircraft. A joint effort of the United States and Germany, the X-31 was the only X-plane to be designed, manufactured, and flight tested as an international collaboration. It was also the only X-plane to support two separate test programs conducted years apart, one administered largely by NASA and the other by the U.S. Navy, as well as the first X-plane ever to perform at the Paris Air Show. Flying Beyond the Stall begins by describing the government agencies and private-sector industries involved in the X-31 program, the genesis of the supermaneuverability concept and its initial design breakthroughs, design and fabrication of two test airframes, preparation for the X-31's first flight, and the first flights of Ship #1 and Ship #2. Subsequent chapters discuss envelope expansion, handling qualities (especially at high angles of attack), and flight with vectored thrust. The book then turns to the program's move to NASA's Dryden Flight Research Center and actual flight test data. Additional tasking, such as helmet-mounted display evaluations, handling quality studies, aerodynamic parameter estimation, and a "tailless" study are also discussed.The book describes how, in the aftermath of a disastrous accident with Ship #1 in 1995, Ship #2 was prepared for its outstanding participation in the Paris Air Show. The aircraft was then shipped back to Edwards AFB and put into storage until the late 1990s, when it was refurbished for participation in the U. S. Navy's VECTOR program. The book ends with a comprehensive discussion of lessons learned and includes an Appendix containing detailed information.
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aeronautical Engineering A Cumulative Index to a Continuing Bibliography supplement 261 written by and published by . This book was released on 1991 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Deep Maneuver written by Jack D Kern Editor and published by Createspace Independent Publishing Platform. This book was released on 2018-10-12 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 5, Deep Maneuver: Historical Case Studies of Maneuver in Large-Scale Combat Operations, presents eleven case studies from World War II through Operation Iraqi Freedom focusing on deep maneuver in terms of time, space and purpose. Deep operations require boldness and audacity, and yet carry an element of risk of overextension - especially in light of the independent factors of geography and weather that are ever-present. As a result, the case studies address not only successes, but also failure and shortfalls that result when conducting deep operations. The final two chapters address these considerations for future Deep Maneuver.
Download or read book Government Reports Annual Index written by and published by . This book was released on 1977 with total page 1150 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.
