Download or read book Helicopter Handling Qualities Investigation written by and published by . This book was released on 1954 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Preliminary Investigation of Handling Qualities Requirements for Helicopter Instrument Flight During Decelerating Approach Manoeuvres and Overshoot written by S. Kereliuk and published by . This book was released on 1985 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Civil Helicopter Handling Qualities Requirements written by M. T. Charlton and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Simulation Investigation of the Effects of Engine and Thrust response Characteristics on Helicopter Handling Qualities written by and published by . This book was released on 1983 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: A program is being conducted to study the effects of engine response, rotor inertia, rpm control, excess power, and vertical damping on specific maneuvers included in nap-of-the-Earth (NOE) operations. Specifically, this study concentrates on the helicopter configuration with an rpm-governed gas-turbine engine and expands on handling qualities-criteria data by focusing on aspects peculiar to rotary-wing and NOE operations. This paper summarizes results of three moving-based piloted simulation studies and explores the frequency characteristics of helicopter thrust response which set it apart from other VTOL types. Power-system response is affected by both the engine governor response and the level of rotor inertia. However, results indicate that, with unlimited power, variations in engine response can have a significant effect on pilot rating, whereas changes in rotor inertia, in general, do not. Results also show that any pilot interaction required to maintain proper rpm control can significantly degrade handling qualities. Data for variations in vertical damping and collective sensitivity are compared with existing handling-qualities specifications, MIL-F-83300 and AGARD 577, and show a need for higher minimums for both damping and sensitivity for the bob-up task.
Download or read book An Investigation of Pilot Modelling for Helicopter Handling Qualities Analysis written by Helen Marie Baker and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Helicopter Handling Qualities written by and published by . This book was released on 1982 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Helicopter Handling Qualities written by and published by . This book was released on 1982 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Piloted Simulator Investigation of Static Stability and Stability control Augmentation Effects on Helicopter Handling Qualities for Instrument Approach written by and published by . This book was released on 1980 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: A motion-base simulator was used to compare the flying qualities of three generic single-rotor helicopters during a full-attention-to-flight control task. Terminal-area VOR instrument approaches were flown with and without turbulence. The objective of this NASA/FAA study was to investigate the influence of helicopter static stability in terms of the values of cockpit control gradients as specified in the existing airworthiness criteria, and to examine the effectiveness of several types of stability control augmentation systems in improving the instrument-flight-rules capability of helicopters with reduced static stability. Two levels of static stability in the pitch, roll, and yaw axes were examined for a hingeless-rotor configuration; the variations were stable and neutral static stability in pitch and roll, and two levels of stability in yaw. For the lower level of static stability, four types of stability and control augmentation were also examined for helicopters with three rotor types: hingeless, articulated, and teetering. Pilot rating results indicate the acceptability of neutral static stability longitudinally and laterally and the need for pitch-roll attitude augmentation to achieve a satisfactory system. (Author).
Download or read book Handling Qualities Investigation of Conventional Helicopter Directional Control Characteristics written by C. C. Bivens and published by . This book was released on 1985 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: A piloted simulation was conducted to investigate the directional-axis handling qualities of a conventional single-main-rotor/tail-rotor helicopter during the performance of low-speed (
Download or read book A Flying Qualities Study of a Small Ram Jet Helicopter written by Andrew B. Connor and published by . This book was released on 1960 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Pilot s Assessment of Helicopter Handling quality Factors Common to Both Agility and Instrument Flying Tasks written by and published by . This book was released on 1980 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Investigation of the Effects of Pitch Roll De Coupling on Helicopter Handling Qualities written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-17 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: An extensive investigation of the effects of pitch-roll coupling on helicopter handling qualities was performed by the U.S. Army and Deutsche Forschungsanstalt fur Luft- und Raumfahrt (DLR), using a NASA ground-based and a DLR in-flight simulator. Over 90 different coupling configurations were evaluated using a high gain roll-axis tracking task. The results show that although the current ADS-33C coupling criterion discriminates against those types of coupling typical of conventionally controlled helicopters, it is not always suited for the prediction of handling qualities of helicopters with modern control systems. Based on the observation that high frequency inputs during tracking are used to alleviate coupling, a frequency domain pitch-roll coupling criterion that uses the average coupling ratio between the bandwidth and neutral stability frequency is formulated. This criterion provides a more comprehensive coverage with respect to the different types of coupling, shows excellent consistency, and has the additional benefit that compliance testing data are obtained from the bandwidth/phase delay tests, so that no additional flight testing is needed. Blanken, C. L. and Pausder, H. J. and Ockier, C. J. Ames Research Center CONTROLLABILITY; COUPLING; DECOUPLING; FLIGHT CONTROL; HELICOPTER CONTROL; HELICOPTER PERFORMANCE; HELICOPTERS; PITCH (INCLINATION); ROLL; AERODYNAMIC STABILITY; AIRCRAFT SAFETY; CONTROL STABILITY; HIGH GAIN; LATERAL CONTROL; LONGITUDINAL CONTROL; SIMULATION; TRACKING (POSITION)...
Download or read book An Investigation of the Effects of Pitch roll de coupling on Helicopter Handling Qualities written by Carl J. Ockier and published by . This book was released on 1995 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Investigation of the Use of Acceleration Trim Gradient in Estimating Helicopter Handling Qualities written by Profilet Clarence J. and published by . This book was released on 1964 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Examination of Handling Qualities Criteria for V STOL Aircraft written by Seth B. Anderson and published by . This book was released on 1960 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study has been undertaken to define hand-ling qualities criteria for V/STOL aircraft. With the current military requirements for helicopters and airplanes as a framework, modifications and additions were made for conversion to a preliminary set of V/STOL requirements using a broad background of flight experience and pilots' comments from VTOL and STOL aircraft, BLC (boundary-layer-control) equipped aircraft, variable stability aircraft, flight simulators and landing approach studies. The report contains a discussion of the reasoning behind and the sources of information leading to suggested requirements. The results of the study indicate that the majority of V/STOL requirements can be defined by modifications to the helicopter and/or airplane requirements by appropriate definition of reference speeds. Areas where a requirement is included but where the information is felt to be inadequate to establish a firm quantitative requirement include the following: Control power and damping relationships about all axes for various sizes and types of aircraft; control power, sensitivity, d-amping and response for height control; dynamic longitudinal and dynamic lateral- directional stability in the transition region, including emergency operation; hovering steadiness; acceleration and deceleration in transition; descent rates and flight-path angles in steep approaches, and thrust margin for approach.
Download or read book An Experimental Evaluation of the Sternberg Task as a Workload Metric for Helicopter Flight Handling Qualities FHQ Research written by and published by . This book was released on 1984 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Compilation and Analysis of Helicopter Handling Qualities Data Volume 1 Data Compilation written by Robert K. Heffley and published by . This book was released on 1979 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
