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This handbook has been compiled by the instructors of the USAF Test Pilot School for use in the performance portion of the School's course. Volume 3 describes performance flight test techniques developed at the Air Force Flight Te...
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This handbook has been compiled by the instructors of the USAF Test Pilot School for use in the performance portion of the School's course. Volume 3 describes performance flight test techniques developed at the Air Force Flight Test Center, Edwards Air Force Base, California.
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The purpose of this report is to determine the applicability of the QuantitativeFeedback Theory (QFT) approach to designing the control laws for a modern military flight control system. This report documents a portion of the QFT r...
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The purpose of this report is to determine the applicability of the QuantitativeFeedback Theory (QFT) approach to designing the control laws for a modern military flight control system. This report documents a portion of the QFT research program, specifically, the implementation of a QFT design on a manned simulation of the NF-16D Variable Stability Inflight Simulator Test Aircraft (VISTA F-16). The control law design addresses the subsonic flight envelope of the VISTA F-16 including changes in aircraft configuration. The design was accomplished as a SISO longitudinal loop and a MIMO lateral loop, and incorporates pilot handling qualities within the specifications. Imbedding handling qualities in the system through prudent choice of control variable ensured that the performance specifications were met. Flexibility in the prefilter design allowed the closed loop response to be shaped for proper feel. The handling qualities were evaluated in a high fidelity, manned simulation of the system. The QFT design provided level 1 handling qualities per the specifications in the pitch channel. It did not provide level 1 handling qualities in the lateral channel, but the design requires minor modification to meet level 1.
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Future transport aircraft are expected to be equipped with advanced flight control and display systems. Fully electrical fly-by-wire flight control systems will stabilize the aircraft and enable the pilot to directly control a pre...
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Future transport aircraft are expected to be equipped with advanced flight control and display systems. Fully electrical fly-by-wire flight control systems will stabilize the aircraft and enable the pilot to directly control a predetermined flight parameter. The necessary control surface deflections will be determined by an on-board computer. For such advanced aircraft it is imperative to investigate whether existing handling qualities criteria can still be used for the design of primary and backup system, and particularly, whether guidelines are required to cover the change introduced when a failure occurs and the flight control system reverts to a backup system with different characteristics. In international cooperation between research institutes of France (ONERA), Germany (DFVLR), United Kingdom (RAE), and the Netherlands (NLR), an experiment has been defined and executed on the NLR moving-base flight simulator to provide a basis for these guidelines. Emphasis of this experiment was put on longitudinal handling qualities. In October 1987, test pilots from these so-called GARTEUR countries each evaluated 2 primary and 2 backup systems during a 3-day period in 2 levels of environmental disturbances.
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The National Advisory Committee for Aeronautics is undertaking an investigation of the flying qualities of airplanes. The work consists in the determination of the significant qualities susceptible of measurement, the development ...
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The National Advisory Committee for Aeronautics is undertaking an investigation of the flying qualities of airplanes. The work consists in the determination of the significant qualities susceptible of measurement, the development of the instruments required to make the measurements, and the accumulation of data on the flying qualities of existing airplanes, which data are to serve as a basis for quantitative specifications for the flying qualities of future designs. A tentative schedule of measurable flying qualities has been prepared and the instruments needed for their measurements have been assembled. A trial of the schedule and the instruments has been made using the Stinson SR-8e airplane. The results showed that, although the original schedule and instruments are basically satisfactory some further development is required to eliminate nonessential items and to expedite flight testing. The report describes and discusses the work done with this airplane.
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Due to aerodynamic instabilities, stable flapping flight requires ever-present fast corrective actions. We investigated how flies control body roll angle, which is unstable and their most sensitive degree of freedom. We glued a ma...
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Due to aerodynamic instabilities, stable flapping flight requires ever-present fast corrective actions. We investigated how flies control body roll angle, which is unstable and their most sensitive degree of freedom. We glued a magnet to each fly and applied a short magnetic pulse that rolls it in mid-air. Fast video shows flies correct perturbations up to 100 degrees within 30ms by applying a stroke-amplitude asymmetry that is well described by a linear PI controller. For more aggressive perturbations, we show evidence for nonlinear and hierarchical control mechanisms. Flies respond to roll perturbations within 5ms, making this correction reflex one of the fastest in the animal kingdom.
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The differences between flight training technology and flight simulation technology are highlighted. Examples of training technologies are provided, including the Navy's training system and the interactive cockpit training device....
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The differences between flight training technology and flight simulation technology are highlighted. Examples of training technologies are provided, including the Navy's training system and the interactive cockpit training device. Training problems that might arise in the near future are discussed. These challenges follow from the increased amount and variety of information that a pilot must have access to in the cockpit.
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Loss of mineral from bone during periods of immobilization, recumbency, or weightlessness is examined. This report describes the instrumentation, technique, and bone mineral changes observed preflight and postflight for the Apollo...
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Loss of mineral from bone during periods of immobilization, recumbency, or weightlessness is examined. This report describes the instrumentation, technique, and bone mineral changes observed preflight and postflight for the Apollo 14, 15, and 16 missions. The bone mineral changes documented during the Apollo Program are reviewed, and their relevance to future missions is discussed.
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The 6th General Flight Crew Training Meeting held in Montreal in May, 1984 was for most IATA member airlines the first time they had been exposed to what was then a relatively new aspect of flight crew training-resource management...
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The 6th General Flight Crew Training Meeting held in Montreal in May, 1984 was for most IATA member airlines the first time they had been exposed to what was then a relatively new aspect of flight crew training-resource management training. In reviewing the results of this meeting the IATA Flight Crew Training SubCommittee (FCTSC), which had been responsible for the agenda and the meeting itself, concluded that because very few airlines had implemented a program or even appeared to understand the term resource management, a member airline survey should be conducted and the results analyzed. This presentation shows the results of that survey in a form which can be related to the topics of the workshop.
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