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Artykuły w czasopismach na temat „Manoeuvre loads”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 15 lutego 2022

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1

Dekker, S., G. Wurzel, and R. Alderliesten. "Reliability modelling for rotorcraft component fatigue life prediction with assumed usage." Aeronautical Journal 120, no. 1232 (July 8, 2016): 1658–92. http://dx.doi.org/10.1017/aer.2016.79.

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ABSTRACTFatigue life is a random variable. Thus, the reliability of a conservative fatigue life prediction for a component in the helicopter dynamic system needs to be substantiated. A standard analytical substantiation method uses averaged manoeuvre loads instead of seeing manoeuvre loads as a random variable whose distribution is estimated with limited precision. This simplification may lead to inaccuracies. A new simulation-based method is developed to conservatively predict fatigue life, while also accounting for the full random distribution and uncertainty of manoeuvre loads. Both methods

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2

Kowaleczko, Grzegorz, and Andrzej Leśniczak. "Modelling of Helicopter Main Rotor Aerodynamic Loads in Manoeuvres." Journal of KONES 26, no. 4 (December 1, 2019): 273–84. http://dx.doi.org/10.2478/kones-2019-0118.

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AbstractThe article discusses the method of modelling of the helicopter main rotor aerodynamic loads during steady state flight and manoeuvres. The ability to determine these loads was created by taking into account the motion of each blade relative to the hinges and was a result of the applied method of aerodynamic loads calculating. The first part of the work discusses the basic relationships that were used to build the mathematical model of helicopter flight. The focus was also on the method of calculating of the aerodynamic forces generated by the rotor blades. The results of simulations d

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3

Irving, P. E., J. E. Strutt, R. A. Hudson, K. Allsop, and M. Strathern. "The contribution of fatigue usage monitoring systems to life extension in safe life and damage tolerant designs." Aeronautical Journal 103, no. 1030 (December 1999): 589–95. http://dx.doi.org/10.1017/s0001924000064228.

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Abstract Fatigue usage monitoring systems (Fums) offer considerable potential for life extension of aircraft parts. In this work the life extension benefits of Fums is assessed by adopting a probabilistic approach. The roles of damage law type and of service usage variability is explored. It is shown by analysis that in the absence of cycle to cycle load interaction effects, load sequence has no effect on eventual life in either linear or non linear damage laws, provided that the function describing the rate of damage growth has separable variables of stress and damage. This condition includes

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4

Bordogna, Marco Tito, Paul Lancelot, Dimitri Bettebghor, and Roeland De Breuker. "Static and dynamic aeroelastic tailoring with composite blending and manoeuvre load alleviation." Structural and Multidisciplinary Optimization 61, no. 5 (January 9, 2020): 2193–216. http://dx.doi.org/10.1007/s00158-019-02446-w.

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AbstractIn aircraft design, proper tailoring of composite anisotropic characteristics allows to achieve weight saving while maintaining good aeroelastic performance. To further improve the design, dynamic loads and manufacturing constraints should be integrated in the design process. The objective of this paper is to evaluate how the introduction of continuous blending constraints affects the optimum design and the retrieval of the final stacking sequence for a regional aircraft wing. The effect of the blending constraints on the optimum design (1) focuses on static and dynamic loading conditi

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5

Barbieri, Nilson, Rubem Penteado de Melo, Key Fonseca de Lima, and Gabriel de Sant’Anna Vitor Barbieri. "Dynamical analysis of B-train vehicle combination with liquid cargo." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 233, no. 14 (March 21, 2019): 3871–81. http://dx.doi.org/10.1177/0954407019838127.

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In this work, a combination of B-train type vehicle is dynamically analysed through lateral movement at low speed manoeuvre known as Lane Change Manoeuvre. The analyses were conducted for a vehicle with liquid loads of 100%, 80%, 60% and 40% capacity. The analyses involve adjusting the steer angle through an objective function taking into account the numerical and experimental lateral acceleration of the tractor vehicle. The movement of the liquid (slosh) during the manoeuvres are approximated using the software Pasimodo and trammel pendulum. Considering the upper surface of the liquid inside

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Kowaleczko, Grzegorz, Tomasz Kwaśniak, Mirosław Nowakowski, and Mirosław Michalczewski. "Analysis of aerodynamics and main rotor loads under stalled conditions of helicopter’s main rotor during the pull-up manoeuvre." Journal of KONBiN 48, no. 1 (December 1, 2018): 7–29. http://dx.doi.org/10.2478/jok-2018-0045.

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Abstract The article discusses the main features of the applied simulation model of helicopter flight indicating references, where it was elaborated in detail. It focuses on presenting the simulation results of pull-up manoeuvre during which the helicopter does not respond correctly. The reasons for the behaviour as mentioned above were explained based on the results of calculations. The capabilities of the simulation model were used to determine the current loads of particular blades of the helicopter’s main rotor. The results were illustrated by maps of the angles of attack and aerodynamic l

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7

Popov, G., S. Sankar, T. S. Sankar, and G. H. Vatistas. "Dynamics of Liquid Sloshing in Horizontal Cylindrical Road Containers." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 207, no. 6 (November 1993): 399–406. http://dx.doi.org/10.1243/pime_proc_1993_207_147_02.

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A study of the liquid behaviour in horizontal cylindrical road containers undergoing a steady turning manoeuvre is presented and discussed. The steady state solutions are derived analytically from the hydrostatic equations. The transient solutions are obtained by numerical integration of the Navier-Stokes, continuity and free-surface equations. The non-dimensional governing equations are solved in primitive variables by using a modified marker-and-cell technique which involves the interpolation-reflection type boundary conditions developed for this investigation. The mathematical model of the

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8

Sinha, Kautuk, Thomas Klimmek, Matthias Schulze, and Vega Handojo. "Loads analysis and structural optimization of a high aspect ratio, composite wing aircraft." CEAS Aeronautical Journal 12, no. 2 (February 7, 2021): 233–43. http://dx.doi.org/10.1007/s13272-021-00494-x.

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AbstractComposite structures have shown a prominent impact in the aircraft structural design. With an increasing shift towards incorporating more composite materials in the primary aircraft structure it is imperative to have corresponding design tools to simplify the design process. In the present work, a simplified implementation for composite optimization has been developed within the DLR-AE (German Aerospace Centre, Institute of Aeroelasticity) automated aeroelastic structural design framework cpacs-MONA. This paper presents the results of structural optimization of a high aspect ratio comp

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9

Leonelli, Luca, Stefano Cattabriga, and Silvio Sorrentino. "Driveline instability of racing motorcycles in straight braking manoeuvre." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 232, no. 17 (September 28, 2017): 3045–61. http://dx.doi.org/10.1177/0954406217730093.

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Experimental evidence shows that a self-excited vibration may appear during braking manoeuvres performed by road-racing motorcycles. It involves vertical oscillation of front and rear wheel axles as well as angular oscillation of the driveline in a frequency range between 17 and 22 Hz. As a consequence, severe oscillations of the tyre-ground vertical loads can be observed, leading to a loss of grip and ultimately weakening the vehicle overall performance. Several contributions on this topic can be accounted for in the literature; however, a comprehensive description of the phenomenon has not b

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10

Stanisławski, Jarosław. "Simulation of Boundary States of Helicopter Flight." Journal of KONES 26, no. 2 (June 1, 2019): 137–44. http://dx.doi.org/10.2478/kones-2019-0042.

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Abstract Results of simulation of main rotor blade loads and deformations, which can be generated during boundary states of helicopter flight, are presented. Concerned cases of flight envelope include hover at maximum height, level flight at high velocity, pull-up manoeuvres applying cyclic pitch and mixed collective and cyclic control. The simulation calculations were executed for data of light helicopter with three-bladed articulated rotor. For analysis, the real blades are treated as elastic axes with distributed masses of blade segments. The model of deformable blade allows for out-of-plan

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11

Lim, J. W. "Consideration of structural constraints in passive rotor blade design for improved performance." Aeronautical Journal 120, no. 1232 (July 4, 2016): 1604–31. http://dx.doi.org/10.1017/aer.2016.77.

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ABSTRACTThis design study applied parameterisation to rotor blade for improved performance. In the design, parametric equations were used to represent blade planform changes over the existing rotor blade model. Design variables included blade twist, sweep, dihedral and the radial control point. Updates to the blade structural properties with changes in the design variables allowed accurate evaluation of performance objectives and realistic structural constraints – blade stability, steady moments (flap bending, chord bending and torsion) and the high-g manoeuvre pitch link loads. Performance im

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12

Bocheński, Damian. "Investigations of operational driving loads of bucket chains and manoeuvre hoisting winches on multi-bucket dredgers." Polish Maritime Research 15, no. 3 (October 1, 2008): 42–48. http://dx.doi.org/10.2478/v10012-007-0082-1.

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Investigations of operational driving loads of bucket chains and manoeuvre hoisting winches on multi-bucket dredgers The paper concerns problems of preliminary designing of bucket dredgers' power plants. This paper presents results of investigations of six bucket dredgers in service. The operational investigations consisted in measuring the parameters which characterize working conditions of two main receivers of mechanical energy: bucket chains and swing winches. In the paper characteristics of disposition of loading of bucket chains and swing winches are presented. They covered average value

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13

Grm, Aleksander. "Ships Added Mass Effect on a Flexible Mooring Dolphin in Berthing Manoeuvre." Journal of Marine Science and Engineering 9, no. 2 (January 21, 2021): 108. http://dx.doi.org/10.3390/jmse9020108.

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This paper deals with the hydrodynamic effect of the ship on a flexible dolphin during a mooring manoeuvre. The hydrodynamic effect refers to the change in momentum of the surrounding fluid, which is defined by the concept of added mass. The main reason for the present study is to answer the question, “What is the effect of the added mass compared to the mass of the ship during the mooring procedure for a particular type of ship?” Measured angular frequencies of dolphin oscillations showed that the mathematical model can be approximated by the zero frequency limit. This simplifies the problem

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14

Wojtas, Małgorzata, and Agnieszka Sobieszek. "Gyroplane Rotor Hubs Strength Tests." Journal of KONES 26, no. 3 (September 1, 2019): 265–70. http://dx.doi.org/10.2478/kones-2019-0082.

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Abstract In this article a review of rotor, hub constructions were presented. Discussed rotor’s hub is made of composite or aluminum alloys materials. Two types of rotor hub were presented (four-blades and two-blades teetering rotor hub), each of them are dedicated to gyroplanes. Typical gyroplane main rotors are characterized by simple design, especially in case of rotors for light gyroplanes. In the following part of the article the type of strength tests required by certification process were shown. The test programs based on legal aspects of admission to the flight tests taking into accoun

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15

Lim, J. W. "Consideration of structural constraints in passive rotor blade design for improved performance." Aeronautical Journal 119, no. 1222 (December 2015): 1513–39. http://dx.doi.org/10.1017/s0001924000011386.

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AbstractThis design study applied parameterisation to rotor blade for improved performance. In the design, parametric equations were used to represent blade planform changes over the existing rotor blade model. Design variables included blade twist, sweep, dihedral, and radial control point. Updates to the blade structural properties with changes in the design variables allowed accurate evaluation of performance objectives and realistic structural constraints – blade stability, steady moments (flap bending, chord bending, and torsion), and the high g manoeuvring pitch link loads. Performance i

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16

Colley, B. A., R. G. Curtis, and C. T. Stockel. "Towards Intelligent Ships in Marine Training Simulators." Journal of Navigation 39, no. 1 (January 1986): 75–81. http://dx.doi.org/10.1017/s0373463300014247.

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An application of the model to manoeuvre ships based on the range to domain over range rate (RDRR) concept is described. A simulation of a training simulator has been set up on which the target ships manoeuvre by the RDRR model in response to mariner controlled ships. Results of experiments show that the RDRR model manoeuvres targets realistically. The applications are reduced instructor work load and increased simulator reality. The method has the potential for development to manoeuvre ships at sea.B. A. Colley is now with Plessey Marine, R. G. Curtis is with the Department of Trade and Indus

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17

Fry, A., R. Cook, and N. Revill. "CVF ski-jump ramp profile optimisation for F-35B." Aeronautical Journal 113, no. 1140 (February 2009): 79–85. http://dx.doi.org/10.1017/s0001924000002803.

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Abstract This paper presents a summary of the principles and processes used to design a ski-jump ramp profile for the UK’s Future Aircraft Carrier (CVF) optimised for the Joint Strike Fighter (JSF). The paper includes an overview of the CVF and JSF programs, a history and summary of the ski-jump ramp and the principles of its use in the shipborne Short Take-Off (STO) manoeuvre. The paper discusses the importance of defining optimisation boundaries including specified objectives, aircraft configurations and environmental conditions. It then demonstrates the process of balancing the design drive

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18

Sbarufatti, Claudio, Andrea Manes, and Marco Giglio. "On the Integration of Real-Time Diagnosis and Prognosis for Scheduled Maintenance Optimization." Key Engineering Materials 569-570 (July 2013): 1044–51. http://dx.doi.org/10.4028/www.scientific.net/kem.569-570.1044.

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Helicopters are very critical aircrafts from the point of view of fatigue loads. A structural damage could grow fast to critical size because of the wide range of manoeuvre loads. As a consequence, scheduled maintenance is a major cost during the operative life of the aircraft. The most advanced methodologies for Structural Health Monitoring and Prognostic Health Management available today are aimed to provide a real-time structural diagnosis, thus maximizing the availability of the helicopter and reducing the maintenance costs. However, on-board diagnostic systems might be gradually introduce

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Krake, Luther. "Helicopter Airframe Fatigue Spectra Generation." Advanced Materials Research 891-892 (March 2014): 720–25. http://dx.doi.org/10.4028/www.scientific.net/amr.891-892.720.

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Helicopter airframe fatigue cracking is a cause of significant and growing cost of ownership and operational readiness concerns for the operators of (primarily) metallic airframe helicopters. Airframe fatigue has often had relatively low priority for helicopters, with research and design concentrated on the fatigue of flight critical rotating structural components such as rotor blades and pitch links. The Australian Defence Science and Technology Organisation (DSTO) and the US Naval Air Systems Command are collaborating to develop improved methods and technologies that can be used to assess th

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20

Kosenkova, A. V., V. E. Minenko, and D. N. Agafonov. "Investigation of the Ballistic Descent Mode for a Maneuverable Lander to the Venus Surface." Herald of the Bauman Moscow State Technical University. Series Mechanical Engineering, no. 4 (133) (August 2020): 42–60. http://dx.doi.org/10.18698/0236-3941-2020-4-42-60.

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At present, various projects to continue fundamental investigations of Venus are considered in Russia and abroad. It means that the issue of developing a landing module to reach the surface of the planet becomes topical, as the module might provide access to the regions most attractive in terms of research. We propose to use a landing module of the lifting body type, which, as compared to a ballistic class module, is not unacceptably complicated in terms of design and at the same time features a lift-to-drag ratio adequate for solving manoeuvring problems arising in the process of descent into

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Rasuo, B. "Some analytical and numerical solutions for the safe turn manoeuvres of agricultural aircraft – an overview." Aeronautical Journal 111, no. 1123 (September 2007): 593–99. http://dx.doi.org/10.1017/s000192400000186x.

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Abstract In this paper, a theoretical study of the turn manoeuvre of an agricultural aircraft is presented. The manoeuvre with changeable altitude is analyzed, together with the, effect of the load factors on the turn manoeuvre characteristics during the field-treating flights. The mathematical model used describes the procedure for the correct climb and descent turn manoeuvre. For a typical agricultural aircraft, the numerical results and limitations of the climb, horizontal and descending turn manoeuvre are given. The problem of turning flight with changeable altitude is described by the sys

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Granvik, Anton. "“Para Hacer un Buen Reentry es Esencial que te Salga Bien el Bottom Primero” – The Presence of English in Portuguese and Spanish Surf Talk." Revista Alicantina de Estudios Ingleses, no. 32 (December 15, 2019): 89. http://dx.doi.org/10.14198/raei.2019.32.05.

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Although modern surfing can be traced back to early 20th century Hawaii, only quite recently has surfing become a truly global phenomenon. The aim of this paper is to discuss how the arrival of such a new cultural phenomenon as surfing to the Spanish and Portuguese speaking world is managed linguistically, i.e. to account for how one goes about talking about surfing in Portuguese and Spanish. I propose to investigate how the existing surfing vocabulary in English affects surf talk in Portuguese and Spanish. On the one hand, I will determine which words are incorporated as such and which pieces

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Elbanhawi, M., M. Simic, and R. Jazar. "Improved manoeuvring of autonomous passenger vehicles: Simulations and field results." Journal of Vibration and Control 23, no. 12 (October 20, 2015): 1954–83. http://dx.doi.org/10.1177/1077546315605666.

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This paper describes a novel manoeuvre planning method to attenuate disturbances acting on occupants of autonomous cars as a result of driving behaviour. New research findings suggested that the passengers in autonomous cars might be more prone to motion sickness and thus overall discomfort. The proposed approach is based on a recently developed novel continuous B-spline path smoothing algorithm for car-like steered robots. Two algorithms are designed for urban driving scenarios and steering between two predefined poses. The resulting paths avoid abrupt changes in steering and longitudinal vel

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24

Voskuijl, M., D. J. Walker, and B. J. Manimala. "Helicopter load alleviation using active control." Aeronautical Journal 112, no. 1137 (November 2008): 663–72. http://dx.doi.org/10.1017/s0001924000002633.

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Abstract This paper discusses how structural load objectives can be included in a rotorcraft flight control system design in an efficient and straightforward way using multivariable control techniques. Several research studies have indicated that pitch link loads for various rotorcraft types can reach high or even unacceptable values, both in steady state and maneuvering flight. This is especially the case for high-speed aggressive maneouvers. Pitch link loads at high-speed flight are therefore taken as a case study. A novel longitudinal control system is presented, designed to reduce helicopt

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Manimala, B., G. D. Padfield, D. Walker, M. Naddei, L. Verde, U. Ciniglio, P. Rollet, and F. Sandri. "Load alleviation in tilt rotor aircraft through active control; modelling and control concepts." Aeronautical Journal 108, no. 1082 (April 2004): 169–84. http://dx.doi.org/10.1017/s0001924000000087.

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This paper presents the first results from research into active control of structural load alleviation (SLA) for tiltrotor aircraft carried out in the European ‘critical technology’ RHILP project. The importance of and the need for SLA in tiltrotors are discussed, drawing on previous US experience reported in the open literature. The paper addresses the modelling aspects in some detail; hence forming the foundation for both the FLIGHTLAB simulated XV-15 and EUROTILT configurations. The primary focus of attention is the suppression of in-plane rotor yoke loads for pitch manoeuvres in airplane m

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Cerrini, Angela, P. Johannesson, and Stefano Beretta. "Superposition of Manoeuvres and Load Spectra Extrapolation." Applied Mechanics and Materials 5-6 (October 2006): 255–62. http://dx.doi.org/10.4028/www.scientific.net/amm.5-6.255.

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To face the increasing demand for long lasting, versatile and performing machines, a detailed analysis of the load conditions is required especially when structural integrity assessment has to be achieved. Usually acquisitions of load histories are shorter than the machine working life and an extrapolation of the signal for the total service life is needed. Traditional methods for load spectra extrapolation are based on conservative choices in terms of worst case scenario. Methods based on extreme value statistics have been developed. The problem addressed in this paper concerns the extrapolat

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Scott, P. A., and C. J. Christie. "“Optimal” speed–load combinations for military manoeuvres." International Journal of Industrial Ergonomics 33, no. 1 (January 2004): 63–68. http://dx.doi.org/10.1016/j.ergon.2003.09.003.

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Ma, Kaichao, Changhong Tang, Jianye Zhang, Xiaofei Niu, and Qingzhi Fan. "Flight Load Design of Nacelle of Carrier-Based Propeller Transport Aircraft." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 38, no. 6 (December 2020): 1249–56. http://dx.doi.org/10.1051/jnwpu/20203861249.

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The carrier-based propeller transport aircraft has a compact layout, where the large nacelle in size and weight is sensitive to propeller slipstream, and thus calls for sophisticated flight load design studies, which are still insufficient considering domestic experience. In detail, the design methods on aerodynamic load, inertial load, gyrostatic moment, as well as studies on design criteria and maneuver simulation technology are shown for a reference aircraft. The design range applied to this nacelle's flight load is firstly determined by understanding and selecting the design criteria. The

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Burlion, L., C. Poussot-Vassal, P. Vuillemin, M. Leitner, and T. Kier. "Longitudinal Manoeuvre Load Control of a Flexible Large-Scale Aircraft." IFAC Proceedings Volumes 47, no. 3 (2014): 3413–18. http://dx.doi.org/10.3182/20140824-6-za-1003.01588.

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Suresh, P. S., G. Radhakrishnan, and K. Shankar. "Manoeuvre load alleviation using multi-objective optimisation for combat aircraft wing." International Journal of Design Engineering 3, no. 2 (2010): 195. http://dx.doi.org/10.1504/ijde.2010.034864.

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Yu, Dongchi, Lu Wang, and Ronald W. Yeung. "Experimental and numerical study of ship-to-ship interactions in overtaking manoeuvres." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 475, no. 2225 (May 2019): 20180748. http://dx.doi.org/10.1098/rspa.2018.0748.

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The study on close-quarter manoeuvring of vessels is of great importance for the safety and efficiency of maritime operations. In this paper, the hydrodynamic interactions between two vessels in moderate-speed overtaking manoeuvres are studied. Computational investigation by free-surface panel method is performed, and the results are assessed against experimental measurements from towing-tank model tests. The influences of overtaking speed and the speed difference between vessels on the hydrodynamic loads are studied. It is found that the free-surface deformation, on account of the blockage ef

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Lone, Mudassir, Chi Kin Lai, Alastair Cooke, and James Whidborne. "Framework for Flight Loads Analysis of Trajectory-Based Manoeuvres with Pilot Models." Journal of Aircraft 51, no. 2 (March 2014): 637–50. http://dx.doi.org/10.2514/1.c032376.

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Oyadiji, S. O., A. Ayalew, and E. Lai. "Analytical framework for the smooth manoeuvre of wheeled mobile robots traversing obstacles." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 461, no. 2054 (February 8, 2005): 481–507. http://dx.doi.org/10.1098/rspa.2004.1337.

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The aims of this paper are twofold. The first aim is to employ a vectorial approach to model the dynamics of wheeled mobile robots (WMRs), which need to travel over localized surface irregularities. This approach results in compact vectorial equations which are more easily programmable using a symbolic programming software tool. The second aim is to apply the model in conjunction with temporal trajectory functions to compute the traction–force requirements of WMRs traversing obstacles of specified profiles. This model–based approach provides a more robust framework for the development of activ

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Merchan, Alejandro, and V. J. Clemente-Suárez. "Psychophysiological modifications in an assault infantry manoeuvre using a chemical, biological, radiological and nuclear personal protective equipment." BMJ Military Health 166, no. 2 (June 17, 2019): 62–66. http://dx.doi.org/10.1136/jramc-2019-001166.

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IntroductionThe study of the psychophysiological response during combat actions has been poorly researched despite its importance for warfighter training and specific instruction. The aim of the present investigation was to analyse the effect of chemical, biological, radiological and nuclear personal protective equipment (PPE) on the psychophysiological response, mechanical and physical load and fine motor skills of professional soldiers in an endurance infantry manoeuvre.Methods16 soldiers conducted an assault manoeuvre with and without the PEE in separate days. We analysed before and after t

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Milian, Gabriela, Sorin-Ştefan Biriş, and George Ipate. "Modelling behaviour of a partially loaded road tanker with agro-food liquids during the breaking manoeuver." E3S Web of Conferences 112 (2019): 03006. http://dx.doi.org/10.1051/e3sconf/201911203006.

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Longitudinal and lateral liquid sloshing in a partially filled tanker affect the braking performance of the tankers. The movement during braking of the liquid load is determined by the change in the position of the centre of gravity of the load inside the vehicle. Becoming an undesirable phenomenon when analyzing the performance of the vehicle braking manoeuver. In this paper modelling of the behaviour of the cross-section circular tank with baffles, partially filled with liquid agro-food products, was performed, which performs a braking manoeuver. Two different fluids have been used to simula

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Stuhlenmiller, Florian, Jochen Schuy, Philipp Beckerle, and Stephan Rinderknecht. "A user-specific human-machine interaction strategy for a prosthetic shank adapter." Current Directions in Biomedical Engineering 3, no. 2 (September 7, 2017): 493–96. http://dx.doi.org/10.1515/cdbme-2017-0103.

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AbstractFor people with lower limb amputation, a user-specific human-machine interaction with their prostheses is required to ensure safe and comfortable assistance. Especially during dynamic turning manoeuvres, users experience high loads at the stump, which decreases comfort and may lead to long-term tissue damage. Preliminary experiments with users wearing a configurable, passive torsional adaptor indicate increased comfort and safety achieved by adaptation of torsional stiffness and foot alignment. Moreover, the results show that the individual preference regarding both parameters depend o

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Habibi, Hossein, and William O’Connor. "Payload motion control of rotary gantry and luffing cranes using mechanical wave concepts." Transactions of the Institute of Measurement and Control 39, no. 11 (May 10, 2016): 1649–62. http://dx.doi.org/10.1177/0142331216644044.

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A new solution is presented to the problem of controlling the motion of a crane’s suspended load through arbitrarily complex, 3D paths through the crane’s manoeuvre space. A generalized boom crane arrangement is considered, so that gantry and luffing arrangements are included as particular cases. Thus the crane’s boom slews about a central, vertical (tower) axis. This boom is either a horizontal gantry with a trolley moving radially along it, from which the load can be winched, or a jib, which can rotate in the vertical plane, with the hoisting cable passing over a pulley attached at its end p

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Suresh, P., G. Radhakrishnan, and K. Shankar. "Multi-Objective Optimization Methods Applied for Manoeuvre Load Control on Combat Aircraft wing." International Journal of Aerospace Innovations 2, no. 3 (September 2010): 189–206. http://dx.doi.org/10.1260/1757-2258.2.3.189.

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Ronald, Janet. "Take a load off with some training in correct moving manoeuvres." Nursing Standard 14, no. 26 (March 15, 2000): 29. http://dx.doi.org/10.7748/ns.14.26.29.s52.

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Grabowski, Łukasz, Zbigniew Czyż, and Marcin Porzak. "THE STUDY ON LOADS ON AN AIRCRAFT PISTON ENGINE CONTINENTAL MOTORS IOF-240-B5B IN TRAINING FLIGHTS." Transport 33, no. 3 (September 27, 2018): 773–78. http://dx.doi.org/10.3846/transport.2018.5467.

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This investigation presents the development of a model of a flight envelope for a piston engine aircraft. The study covers performing necessary tests and measurements of the selected operating parameters of the engine piston and an analysis of the results. The paper describes also a mission and aircraft manoeuvres. This investigation enables us to study loads on an aircraft piston engine, i.e. Continental Motors IOF-240-B5B, mounted in the Liberty XL2 by Liberty Aerospace.

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Cox, H. Roxbee. "Problems involving the stiffness of aeroplane wings." Aeronautical Journal 103, no. 1022 (April 1999): 190–95. http://dx.doi.org/10.1017/s0001924000096470.

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An aircraft may reasonably be said to be structurally safe if it is known that during the manoeuvres which it is likely to perform (i) The stress in no part of the essential structure approaches the failing stress of the material, (ii) It does not become unstable or uncontrollable on account of structural distortion. I intend to discuss in this context the wing structure of the aeroplane. For many years it was felt both in the design and airworthiness approval of the majority of aeroplane wing structures that the main responsibility for attempting to secure the former desideratum could rest up

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Smith, G. H., J. S. Huntley, R. E. Anakwe, R. J. Wallace, and J. E. McEachan. "Tensioning of Prolene reduces creep under cyclical load: relevance to a simple pre-operative manoeuvre." Journal of Hand Surgery (European Volume) 37, no. 9 (November 24, 2011): 823–25. http://dx.doi.org/10.1177/1753193411427663.

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A longitudinal stretch or ‘pre-tensioning’ is a method employed by some surgeons to improve the handling characteristics of a suture. We used a tensile tester to assess the effect of pre-tensioning on the mechanical properties of two suture materials (3-0 Prolene and 3-0 Ethibond) commonly used for flexor tendon repair. A cyclical loading programme was used to simulate an early rehabilitation regime. All sutures were subsequently tested to failure (for ultimate tensile strength). The pre-tensioned Prolene sutures showed significantly less creep after cyclical loading in comparison to controls.

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Canfrán, S., I. A. Gómez de Segura, R. Cediel, and J. García-Fernández. "Effects of fluid load on cardiovascular function during stepwise lung recruitment manoeuvre in healthy dogs." Veterinary Journal 197, no. 3 (September 2013): 800–805. http://dx.doi.org/10.1016/j.tvjl.2013.05.013.

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Vargas, Aldo, Murray Ireland, and David Anderson. "Swing-Free Manoeuvre Controller for Rotorcraft Unmanned Aerial Vehicle Slung-Load System Using Echo State Networks." International Journal of Unmanned Systems Engineering 3, no. 1 (January 1, 2015): 26–37. http://dx.doi.org/10.14323/ijuseng.2015.3.

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Bhattarai, Aroj, and Manfred Staat. "Modelling of Soft Connective Tissues to Investigate Female Pelvic Floor Dysfunctions." Computational and Mathematical Methods in Medicine 2018 (2018): 1–16. http://dx.doi.org/10.1155/2018/9518076.

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After menopause, decreased levels of estrogen and progesterone remodel the collagen of the soft tissues thereby reducing their stiffness. Stress urinary incontinence is associated with involuntary urine leakage due to pathological movement of the pelvic organs resulting from lax suspension system, fasciae, and ligaments. This study compares the changes in the orientation and position of the female pelvic organs due to weakened fasciae, ligaments, and their combined laxity. A mixture theory weighted by respective volume fraction of elastin-collagen fibre compound (5%), adipose tissue (85%), and

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Suresh, P. S., G. Radhakrishnan, and K. Shankar. "Optimal trends in Manoeuvre Load Control at subsonic and supersonic flight points for tailless delta wing aircraft." Aerospace Science and Technology 24, no. 1 (January 2013): 128–35. http://dx.doi.org/10.1016/j.ast.2011.10.012.

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Kang, Sangmin, Maru Yoon, and Myoungho Sunwoo. "Traction control using a throttle valve based on sliding mode control and load torque estimation." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 219, no. 5 (May 1, 2005): 645–53. http://dx.doi.org/10.1243/095440705x11059.

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The purpose of an engine-controlled traction control system (TCS) is to regulate engine torque in order to keep the driven wheel slip in a desired range. Engine torque can be regulated by a throttle valve. In this paper, the engine-controlled TCS based on an engine model and estimated load torque by a Luenberger observer is proposed. For this control scheme, the engine model is required for a model-based controller design using sliding mode control. The engine torque controller determines the throttle angle for maintaining the desired manifold pressure to generate engine torque corresponding t

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Arslan, M. Selçuk, and Mert Sever. "Vehicle stability enhancement and rollover prevention by a nonlinear predictive control method." Transactions of the Institute of Measurement and Control 41, no. 8 (September 18, 2018): 2135–49. http://dx.doi.org/10.1177/0142331218795200.

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In this study, a nonlinear predictive control method is developed for the active steering control of a sport utility vehicle. The method is tested on a nonlinear mathematical model of an 11-degree-of-freedom vehicle. The system performance is evaluated by considering that the control law must keep the actual yaw rate close to the desired yaw rate and minimizing the vertical load changes at each wheel. The latter is proposed for this work. The vertical load changes play an important role in the dynamics and the stability of the system. The effectiveness of the control method is demonstrated thr

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Hussain, K., W. Stein, and A. J. Day. "Modelling Commercial Vehicle Handling and Rolling Stability." Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 219, no. 4 (December 1, 2005): 357–69. http://dx.doi.org/10.1243/146441905x48707.

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This paper presents a multi-degrees-of-freedom non-linear multibody dynamic model of a three-axle heavy commercial vehicle tractor unit, comprising a subchassis, front and rear leaf spring suspensions, steering system, and ten wheels/tyres, with a semi-trailer comprising two axles and eight wheels/tyres. The investigation is mainly concerned with the rollover stability of the articulated vehicle. The models incorporate all sources of compliance, stiffness, and damping, all with non-linear characteristics, and are constructed and simulated using automatic dynamic analysis of mechanical systems

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Ariff, O. K., and T. H. Go. "Waypoint Navigation of Small-Scale UAV incorporating Dynamic Soaring." Journal of Navigation 64, no. 1 (November 26, 2010): 29–44. http://dx.doi.org/10.1017/s0373463310000378.

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The latest attempts at improving small scale autonomously guided Uninhabited Aerial Vehicles (UAVs) have concentrated around the increase of range and speed. One of these ways is to incorporate dynamic slope soaring manoeuvres as part of the flight path. This is in contrast to most conventional path-planning algorithms where waypoint guidance is merged with terrain avoidance or contour following capability. Additionally, current trajectory optimization techniques are iterative and so have a considerable computational load. The proposed algorithm is based on Dubin's curves, and is therefore opt

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