Showing 421 - 440 results of 2,501 for search '"helicopters"', query time: 0.14s Refine Results
  1. 421

    Locating helicopter ambulance bases in Iceland: efficient and fair solutions by Björn Gunnarsson, Kristrún María Björnsdóttir, Sveinbjörn Dúason, Ármann Ingólfsson

    Published 2023-11-01
    “…More frequent use of helicopter ambulances has been suggested to shorten response times and increase equity in access to advanced emergency care. …”
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    Article
  2. 422

    Optimization of algorithm for surface relief formation by on-board helicopter radar by Simeon Zhyla, Olha Inkarbaieva

    Published 2022-06-01
    “…The main advantages of helicopters include the ability to reduce altitude and flight speed, hover in the air, unscheduled landings, and low sensitivity to weather conditions. …”
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    Article
  3. 423
  4. 424

    Dynamic Modeling of a Transport Helicopter for Internal Cargo Airdrop by Yihua Cao, Wensong Nie

    Published 2024-01-01
    “…This paper proposes a dynamic model for helicopter cargo airdrop process simulation. The overall method is used to incorporate the cargo motion into the general helicopter equations of motion, which simplified the complex cargo–helicopter contact model into a helicopter mass and mass center variation model. …”
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    Article
  5. 425

    Research Progress on Dry Running of Helicopter Gear Transmission System by Ruiting Tong, Yunfeng Wang, Ce Chen, Wenxing Deng, Wenbo Xu

    Published 2022-05-01
    “…The stability of the transmission system is directly related to the survivability of the helicopter. The failure of lubrication system under the condition of war injury will accelerate the damage of gear surface and destroy the dry running condition. …”
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    Article
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    Experimental and numerical investigations on the aerodynamics of a simplified helicopter fuselage by Cheawchan, Atcha-uea

    Published 2022
    “…Depending on helicopter weight class, fuselage parasite drag contributes up to 70 percent of total helicopter drag. …”
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    Thesis-Doctor of Philosophy
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    Implementing aerial refueling system for "CH-47D" helicopter by Gu, Jun Qing.

    Published 2013
    “…The proposed thesis is to investigate the technical feasibility of implementing an aerial refuelling system on the existing Chinook CH-47D military helicopter of the Republic of Singapore Airforce (RSAF) and to analyze the performance of an installed aerial refuelling system using Flowmaster simulation software.…”
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    Thesis
  19. 439

    H-inf robust controller for autonomous helicopter hovering control by Tijani, Ismaila, Akmeliawati, Rini, Legowo , Ari, Budiyono, Agus, Abdul Muthalif, Asan Gani

    Published 2011
    “…Among the major challenges associated with the deployment of autonomous small scale helicopters in civilian UAV applications is the requirement for reliable control scheme. …”
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    Article
  20. 440

    Multiple-surface sliding mode control for 3DOF helicopter by Hamood, Mostafa A., Akmeliawati, Rini, Legowo, Ari

    Published 2011
    “…The three degree of freedom (3DOF) helicopter is a simplified model, which is used to study the behaviours of the helicopters. …”
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    Proceeding Paper