Showing 2,021 - 2,040 results of 2,815 for search '"helicopters"', query time: 0.22s Refine Results
  1. 2021

    Le rôle du formateur dans l’articulation des compétences acquises sur simulateur et des compétences cibles (« terrain ») by Janine Rogalski, Boris Colin

    Published 2018-10-01
    “…The paper aims at highlighting the links between simulator training and direct training in the case of initial training for military helicopter pilots. The issue is considered from the perspective of the instructor’s activity. …”
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    Article
  2. 2022

    Simplified Analytical Approach for an Airborne Bent Wire Ground Penetrating RADAR Antenna System by J. Suganya, J. A. Baskaradas, U. Sciacca, A. Zirizzotti

    Published 2021-04-01
    “…In this work, the influence of the helicopter on the 10 MHz GPR antenna during the airborne survey, is simulated using EMPro© and analysed. …”
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    Article
  3. 2023
  4. 2024

    Detection and Analysis of an Alternate Flow Pattern in a Radial Vaned Diffuser by Victor Moënne-Loccoz, Isabelle Trébinjac, Nicolas Poujol, Pierre Duquesne

    Published 2020-01-01
    “…The flow in the vaned diffuser of an aeronautical centrifugal compressor designed by Safran Helicopter Engines is analyzed through steady and unsteady pressure measurements at different rotation speeds. …”
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    Article
  5. 2025

    Effective Monitoring of Permafrost Coast Erosion: Wide-scale Storm Impacts on Outer Islands in the Mackenzie Delta Area by Michael Lim, Dustin Whalen, Paul J. Mann, Paul Fraser, Heather Bay Berry, Charlotte Irish, Kendyce Cockney, John Woodward

    Published 2020-10-01
    “…Trading lower resolution surface models for large scale coverage and more effective responsive monitoring, the helicopter-based data have been applied to assess storm driven-change across the exposed outer islands of the Mackenzie Delta area for the first time. …”
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    Article
  6. 2026
  7. 2027

    Predictive Maintenance of Military Systems Based on Physical Failure Models by T. Tinga

    Published 2013-07-01
    “…Then three case studies from the military, a helicopter, a naval gas turbine and a military vehicle, are used to demonstrate the benefits of this approach.…”
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    Article
  8. 2028

    Fault diagnosis in a networked control system under communication constraints: A quadrotor application by Chabir Karim, Sid Mohamed Amine, Sauter Dominique

    Published 2014-12-01
    “…This paper considers the problem of attitude sensor fault diagnosis in a quadrotor helicopter. The proposed approach is composed of two stages. …”
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    Article
  9. 2029

    Modelling of Flow Characteristics of Main Rotor with Elliptical Root Section in Hover Mode by Kusyumov Sergey, Stepanov Robert, Kusyumov Alexander, Mirgazov Ruslan, Kritsky Boris

    Published 2023-01-01
    “…The modelling of a helicopter main rotor flow field in hover regime is being considered. …”
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    Article
  10. 2030

    Adapting sampling plans to caribou distribution on calving grounds by Michel Crête, Louis-Paul Rivest, Didier Le Hénaff, Stuart N. Luttich

    Published 1991-10-01
    “…Observers were able to detect on black and white negatives over 95 percent of caribou counted from a helicopter flying at low altitude over the same area; photo scale varied between = 1:3 600 and 1:6 000. …”
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    Article
  11. 2031

    Late summer distribution and abundance of ice-associated whales in the Norwegian High Arctic by Vacquié-Garcia, J, Lydersen, C, Marques, TA, Aars, J, Ahonen, H, Skern-Mauritzen, M, Øien, N, Kovacs, KM

    Published 2017-02-01
    “…Line-transect surveys were conducted using a combination of helicopter-based and ship-based efforts in August 2015. …”
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    Article
  12. 2032

    Activities of the summer party of the 29th Japanese Antarctic Research Expedition in 1987-1988 by Natsuo Sato

    Published 1990-11-01
    “…The ship reached Syowa Station on 2 January 1988,and the transportation of 730 t of cargo by means of helicopter and surface was completed by 12 January. …”
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    Article
  13. 2033

    Numerical Investigation of a Dynamic Stall on a Single Rotating Blade by Yin Ruan, Manfred Hajek

    Published 2021-03-01
    “…Dynamic stall is a phenomenon on the retreating blade of a helicopter which can lead to excessive control loads. …”
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    Article
  14. 2034

    Experimental and numerical investigation on a trimaran airwake, geometry modification by Karim Akbari Vakilabadi, Hamid Reza Ghafari, Hassan Ghassemi

    Published 2023-11-01
    “…The aerodynamic interaction between a helicopter and a trimaran ship's flight deck can be complex and have an impact on handling quality and performance, especially in turbulent conditions. …”
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    Article
  15. 2035

    Predicting Rotor Heat Transfer Using the Viscous Blade Element Momentum Theory and Unsteady Vortex Lattice Method by Abdallah Samad, Gitsuzo B. S. Tagawa, François Morency, Christophe Volat

    Published 2020-07-01
    “…Calculating the unsteady convective heat transfer on helicopter blades is the first step in the prediction of ice accretion and the design of ice-protection systems. …”
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    Article
  16. 2036

    DEVELOPMENT AND EVALUATION OF SIMPLE MEASUREMENT SYSTEM USING THE OBLIQUE PHOTO AND DEM by H. Nonaka, H. Sasaki, S. Fujimaki, S. Naruke, H. Kishimoto

    Published 2016-06-01
    “…Then we try to estimate them from some kind of photographs, such as surveillance camera imagery, satellite imagery, photographs taken from a helicopter and so on. Especially in initial stage, estimation of decent damage situation for a short time is more important than investigation of damage situation for a long time. …”
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    Article
  17. 2037
  18. 2038

    Degree of Fault Tolerance as a Comprehensive Parameter for Reliability Evaluation of Fault Tolerant Electric Traction Drives by Igor Bolvashenkov, Hans-Georg Herzog

    Published 2016-09-01
    “…For the approbation of the proposed method, the authors carried out research and obtained results of its practical application for evaluating the fault tolerance of the power train of an electrical helicopter.…”
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    Article
  19. 2039

    Safety and Liability in the practice of Skiing: How Law and Cognitive Sciences shape the driving factor of Winter Tourism by Tarik Sabry

    Published 2016-06-01
    “…Witnessing an injured skier being airlifted by helicopter from a winter ski resort is an unforgettable event, reminding us of the risks of snow-based winter sports, particularly alpine skiing. …”
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    Article
  20. 2040

    On parameter uniform and layer resolving numerical method for a singularly perturbed model in aerodynamics by K. Saravana Sankar, L. Jones Tarcius Doss

    Published 2023-03-01
    “…In this paper, a parameter uniform computational technique is examined for a partially singularly perturbed semi-linear system of equations which models the flight dynamics of an Unmanned Aerial Vehicle (UAV) and a Helicopter. The components of the solution of this system are expected to exhibit overlapping boundary layers at the origin. …”
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    Article