Works matching Helicopters

Results: 5000

Power method for calculating the far acoustic field of the helicopter lift rotor.

Published in:

Journal of Engineering Physics & Thermophysics, 2011, v. 84, n. 3, p. 599, doi. 10.1007/s10891-011-0511-y

By:

Samokhin, V.

Publication type:

Article

Multi‐aspect micro‐Doppler signatures for attitude‐independent L/N quotient estimation and its application to helicopter classification.

Published in:

IET Radar, Sonar & Navigation (Wiley-Blackwell), 2017, v. 11, n. 4, p. 701, doi. 10.1049/iet-rsn.2016.0271

By:

Zhang, Rui;
Li, Gang;
Clemente, Carmine;
Soraghan, John J.

Publication type:

Article

Influence of Engine Dynamic Characteristics on Helicopter Handling Quality in Hover and Low-Speed Forward Flight.

Published in:

Aerospace (MDPI Publishing), 2024, v. 11, n. 1, p. 34, doi. 10.3390/aerospace11010034

By:

Wei, Yuan;
Chen, Renliang;
Yuan, Ye;
Wang, Luofeng

Publication type:

Article

Crack of a helicopter main rotor actuator attachment: failure analysis and lessons learned.

Published in:

Fracture & Structural Integrity, 2013, n. 26, p. 104, doi. 10.3221/IGF-ESIS.26.11

By:

Allegrucci, L.;
De Paolis, F.;
Coletta, A.;
Bernabei, M.

Publication type:

Article

BLADE ELEMENT - MOMENTUM AERODYNAMIC MODEL OF A HELICOPTER ROTOR OPERATING AT LOW-REYNOLDS NUMBERS IN GROUND EFFECT.

Published in:

Aviation (1648-7788), 2025, v. 29, n. 2, p. 71, doi. 10.3846/aviation.2025.23587

By:

GEORGIEV, Gabriel

Publication type:

Article

Fuel Weight Determination of Ultralight and Very Light Helicopters at the Preliminary Design Stage.

Published in:

Transactions on Aerospace Research, 2022, v. 22, n. 3, p. 48, doi. 10.2478/tar-2022-0016

By:

Dudnik, Vitaly;
Karabut, Victor

Publication type:

Article

ATTENUATION AVERAGE SIGNAL POWER HELICOPTER ANTENNA SYSTEM.

Published in:

Electronics & Control Systems, 2015, v. 44, n. 2, p. 11

By:

Ivanov, A. V. A.;
Zadorozhniy, A. S.

Publication type:

Article

Why Does the Attack Helicopter Have More Survival Ability than the Armed Utility Helicopter?

Published in:

Aeronautical Science Bulletins / Repüléstudományi Közlemények, 2022, v. 34, n. 3, p. 167, doi. 10.32560/rk.2022.3.11

By:

Szilvássy, László

Publication type:

Article

Differences in physical workload between military helicopter pilots and cabin crew.

Published in:

International Archives of Occupational & Environmental Health, 2014, v. 87, n. 4, p. 381, doi. 10.1007/s00420-013-0876-7

By:

Oord, Marieke;
Sluiter, Judith;
Frings-Dresen, Monique

Publication type:

Article

直升机群吊桶洒水协同灭火技术.

Published in:

Journal of Wildland Fire Science, 2023, v. 41, n. 2, p. 72, doi. 10.3969/j.issn.1002-2511.2023.02.018

By:

张文洋;
李庆丰;
薛可顺;
赵宇;
范孝龙

Publication type:

Article

基于 ACO-LENY 的小型无人直升机频域响应辨识方法.

Published in:

Journal of Ordnance Equipment Engineering, 2023, v. 44, n. 4, p. 245, doi. 10.11809/bqzbgcxb2023.04.035

By:

刘鑫瑜;
周健;
卢健;
王耿

Publication type:

Article

New Progress in Helicopter Rotor Wake Research.

Published in:

Transactions of Nanjing University of Aeronautics & Astronautics, 2019, v. 36, n. 1, p. 36, doi. 10.16356/j.1005-1120.2019.01.004

By:

XU Guohua;
SHI Yongjie;
ZHAO Qijun

Publication type:

Article

Sightseeing Accidents with Helicopters and Fixed-Wing Aircraft.

Published in:

Aerospace Medicine & Human Performance, 2022, v. 93, n. 6, p. 532, doi. 10.3357/AMHP.6000.2022

By:

de Voogt, Alexander J.;
Hummel Hohl, Caio;
Kalagher, Hilary

Publication type:

Article

Evaluation of the Helicopter Emergency Breathing Apparatus on Egress Performance.

Published in:

Aerospace Medicine & Human Performance, 2020, v. 91, n. 12, p. 962, doi. 10.3357/AMHP.5704.2020

By:

King, Michael;
Sanli, Elizabeth;
Mugford, Kaitlin;
Martina, Stefanie;
Brown, Robert;
Carnahan, Heather

Publication type:

Article

Diving Accident Evacuations by Helicopter and Immersion Pulmonary Edema.

Published in:

Aerospace Medicine & Human Performance, 2020, v. 91, n. 10, p. 806, doi. 10.3357/AMHP.5563.2020

By:

Corgie, Laëtitia;
Huiban, Nicolas;
Pontier, Jean-Michel;
Brocq, François-Xavier;
Boulard, Jean-François;
Monteil, Marc

Publication type:

Article

Lie-Group Modeling and Numerical Simulation of a Helicopter.

Published in:

Mathematics (2227-7390), 2021, v. 9, n. 21, p. 2682, doi. 10.3390/math9212682

By:

Tarsi, Alessandro;
Fiori, Simone

Publication type:

Article

Simple Learning-Based Robust Trajectory Tracking Control of a 2-DOF Helicopter System.

Published in:

Electronics (2079-9292), 2022, v. 11, n. 13, p. N.PAG, doi. 10.3390/electronics11132075

By:

Reyhanoglu, Mahmut;
Jafari, Mohammad;
Rehan, Muhammad

Publication type:

Article

Calculation of Induced Velocity in Normal Operating Conditions for Vertical Climb and Hover, Autorotation Regime, Vortex Ring State, and Forward Flight Regime for the Sikorsky S-70 Black Hawk Helicopter.

Published in:

INCAS Bulletin, 2025, v. 17, n. 1, p. 33, doi. 10.13111/2066-8201.2025.17.1.3

By:

MIHAILA, Florin;
FUIOREA, Ion

Publication type:

Article

Towards real-time pilot-in-the-loop CFD simulations of helicopter/ship dynamic interface.

Published in:

International Journal of Modeling, Simulation & Scientific Computing, 2017, v. 8, n. 4, p. -1, doi. 10.1142/S179396231743005X

By:

Oruc, Ilker;
Horn, Joseph F.;
Shipman, Jeremy;
Polsky, Susan

Publication type:

Article

An extended helicopter's rescuing model with multiple points.

Published in:

Modern Physics Letters B, 2015, v. 29, n. 8, p. -1, doi. 10.1142/S0217984915500207

By:

Tang, Tie-Qiao;
Shi, Wei-Fang;
Yang, Shi-Chun;
Shang, Hua-Yan

Publication type:

Article

MODELING, CONTROL AND NAVIGATION OF AN AUTONOMOUS QUAD-ROTOR HELICOPTER.

Published in:

Interdisciplinary Description of Complex Systems, 2016, v. 14, n. 3, p. 322, doi. 10.7906/indecs.14.3.5

By:

otarić, Damir

Publication type:

Article

KUYRUK ROTORSUZ TEST HELİKOPTERİ VE TEST DÜZENEĞİ TASARIMI.

Published in:

Teknoloji, 2004, v. 7, n. 4, p. 659

By:

Turhan, Levent;
Yillikçi, Y. Kemal

Publication type:

Article

Measuring the Acoustic Characteristics of a Helicopter Rotormodel in a Wind Tunnel.

Published in:

Acoustical Physics, 2020, v. 66, n. 1, p. 44, doi. 10.1134/S1063771020010078

By:

Pakhov, V. V.;
Fayzullin, K. V.;
Denisov, S. L.

Publication type:

Article

Planetary bearing defect detection in a commercial helicopter main gearbox with vibration and acoustic emission.

Published in:

Structural Health Monitoring, 2018, v. 17, n. 5, p. 1192, doi. 10.1177/1475921717738713

By:

Elasha, Faris;
Greaves, Matthew;
Mba, David

Publication type:

Article

Comparison of micro‐Doppler signatures registered using RBM of helicopters and WSM of vehicles.

Published in:

IET Radar, Sonar & Navigation (Wiley-Blackwell), 2019, v. 13, n. 11, p. 1951, doi. 10.1049/iet-rsn.2019.0210

By:

Gong, Jiangkun;
Yan, Jun;
Li, Deren

Publication type:

Article

Paired echo suppression algorithm in helicopter‐borne SAR imaging.

Published in:

IET Radar, Sonar & Navigation (Wiley-Blackwell), 2017, v. 11, n. 11, p. 1605, doi. 10.1049/iet-rsn.2017.0068

By:

Gao, Yuexin;
Zhang, Zijing;
Xing, Mengdao;
Zhang, Yuhong;
Li, Zhenyu

Publication type:

Article

Micro‐Doppler signatures of helicopters in multistatic passive radars.

Published in:

IET Radar, Sonar & Navigation (Wiley-Blackwell), 2015, v. 9, n. 9, p. 1276, doi. 10.1049/iet-rsn.2015.0125

By:

Bączyk, Marcin Kamil;
Samczyński, Piotr;
Kulpa, Krzysztof;
Misiurewicz, Jacek

Publication type:

Article

Manufacturing and Testing of a Variable Chord Extension for Helicopter Rotor Blades.

Published in:

Actuators, 2022, v. 11, n. 2, p. 53, doi. 10.3390/act11020053

By:

Balzarek, Christoph;
Kalow, Steffen;
Riemenschneider, Johannes;
Rivero, Andres

Publication type:

Article

Numerical Modeling, Trim, and Linearization of a Side-by-Side Helicopter in Hovering Conditions.

Published in:

Aerospace (MDPI Publishing), 2024, v. 11, n. 11, p. 927, doi. 10.3390/aerospace11110927

By:

Mazzeo, Francesco;
Pavel, Marilena D.;
Fattizzo, Daniele;
de Angelis, Emanuele L.;
Giulietti, Fabrizio

Publication type:

Article

Handling Qualities Assessment and Discussion for Helicopter with Slung Load Systems Utilizing Various Sling Configurations.

Published in:

Aerospace (MDPI Publishing), 2024, v. 11, n. 9, p. 711, doi. 10.3390/aerospace11090711

By:

Wang, Luofeng;
Chen, Renliang

Publication type:

Article

Experimental Investigation of Helicopter Noise While Approaching an Elevated Helipad.

Published in:

Aerospace (MDPI Publishing), 2023, v. 10, n. 8, p. 701, doi. 10.3390/aerospace10080701

By:

Gibertini, Giuseppe;
Rezzonico, Silvano;
Rossetti, Marco;
Zanotti, Alex

Publication type:

Article

Full State Constrained Flight Tracking Control for Helicopter Systems with Disturbances.

Published in:

Aerospace (MDPI Publishing), 2023, v. 10, n. 5, p. 471, doi. 10.3390/aerospace10050471

By:

Li, Yankai;
Huang, Yulong;
Liu, Han;
Li, Dongping

Publication type:

Article

Development of a High-Performance Low-Weight Hydraulic Damper for Active Vibration Control of the Main Rotor on Helicopters—Part 1: Design and Mathematical Model.

Published in:

Aerospace (MDPI Publishing), 2023, v. 10, n. 5, p. 391, doi. 10.3390/aerospace10050391

By:

Bertolino, Antonio Carlo;
Gaidano, Matteo;
Smorto, Stefano;
Porro, Paolo Giovanni;
Sorli, Massimo

Publication type:

Article

A New Algorithm on Automatic Trimming for Helicopter Rotor Aerodynamic Loads.

Published in:

Aerospace (MDPI Publishing), 2023, v. 10, n. 2, p. 150, doi. 10.3390/aerospace10020150

By:

Yin, Xinfan;
Ma, Hongxu;
Peng, Xianmin;
Zhang, Guichuan;
An, Honglei;
Wang, Liangquan

Publication type:

Article

Lifting and Transport of Martian Dust by the Ingenuity Helicopter Rotor Downwash as Observed by High‐Speed Imaging From the Perseverance Rover.

Published in:

Journal of Geophysical Research. Planets, 2022, v. 127, n. 12, p. 1, doi. 10.1029/2022JE007605

By:

Lemmon, M. T.;
Lorenz, R. D.;
Rabinovitch, J.;
Newman, C. E.;
Williams, N. R.;
Sullivan, R.;
Golombek, M. P.;
Bell, J. F.;
Maki, J. N.;
Vicente‐Retortillo, A.

Publication type:

Article

Solid Particle Erosion Area of Rotor Blades: Application on Small-Size Unmanned Helicopters.

Published in:

Symmetry (20738994), 2021, v. 13, n. 2, p. 178, doi. 10.3390/sym13020178

By:

Yao, Yongming;
Bai, Xupeng;
Liu, Huiying;
Li, Tianyu;
Liu, Jianbo;
Zhou, Guangli

Publication type:

Article

A Novel Comprehensive Kinematic and Inverse Dynamic Model for the Flybar-Less Swashplate Mechanism: Application on a Small-Scale Unmanned Helicopter.

Published in:

Symmetry (20738994), 2020, v. 12, n. 11, p. 1849, doi. 10.3390/sym12111849

By:

Liu, Jianbo;
Guan, Rongqiang;
Yao, Yongming;
Wang, Hui;
Hu, Linqiang

Publication type:

Article

A Hybrid Mechanism for Helicopters.

Published in:

Symmetry (20738994), 2020, v. 12, n. 1, p. 33, doi. 10.3390/sym12010033

By:

Chiu, Kevin Kuan-Shun;
Lee, Jeou-Long;
Tseng, Ming-Lang;
Hsu, Rosslyn Hsiu-Ling;
Chen, Yen-Jen

Publication type:

Article

DESIGN OF FRACTIONAL ORDER SLIDING MODE CONTROLLER FOR 2 DOF HELICOPTER SYSTEM.

Published in:

Journal of Aeronautics & Space Technologies / Havacilik ve Uzay Teknolojileri Dergisi, 2018, v. 11, n. 2, p. 35

By:

KAVURAN, Gurkan;
YEROGLU, Celaleddin

Publication type:

Article

A METHODOLOGY FOR THE ANALYSES OF UNSTEADY FLOWFIELDS AROUND FORWARD FLYING HELICOPTER ROTORS.

Published in:

Journal of Aeronautics & Space Technologies / Havacilik ve Uzay Teknolojileri Dergisi, 2018, v. 11, n. 2, p. 71

By:

GEÇGEL, Murat;
NACAKLI, Yavuz

Publication type:

Article

Event-driven PID control of autonomous quadrotor helicopters.

Published in:

Journal of Algorithms & Computational Technology, 2018, v. 12, n. 2, p. 159, doi. 10.1177/1748301818761134

By:

Ye, Qian

Publication type:

Article

Optimal model-free backstepping control for a quadrotor helicopter.

Published in:

Nonlinear Dynamics, 2020, v. 100, n. 4, p. 3449, doi. 10.1007/s11071-020-05671-x

By:

Glida, Hossam Eddine;
Abdou, Latifa;
Chelihi, Abdelghani;
Sentouh, Chouki;
Hasseni, Seif-El-Islam

Publication type:

Article

Approximate analysis for main rotor flapping dynamics of a model-scaled helicopter with Bell-Hiller stabilizing bar in hovering and vertical flights.

Published in:

Nonlinear Dynamics, 2016, v. 85, n. 3, p. 1705, doi. 10.1007/s11071-016-2788-z

By:

Zhu, Bing;
Zuo, Zongyu

Publication type:

Article

Nonlinear aeroelastic stability analysis of hingeless helicopter rotor blades using FRF coupling and condition number.

Published in:

Nonlinear Dynamics, 2015, v. 82, n. 1/2, p. 289, doi. 10.1007/s11071-015-2157-3

By:

Roknizadeh, S.;
Nobari, A.;
Shahverdi, H.

Publication type:

Article

Two helicopter classification methods with a high pulse repetition frequency radar.

Published in:

IET Radar, Sonar & Navigation (Wiley-Blackwell), 2013, v. 7, n. 3, p. 312, doi. 10.1049/iet-rsn.2012.0278

By:

Zuo, Lei;
Li, Ming;
Zhang, Xiao‐wei;
Wu, Yan

Publication type:

Article

Noise Exposure During Alpine Helicopter Rescue Operations.

Published in:

Annals of Occupational Hygiene, 2004, v. 48, n. 5, p. 475, doi. 10.1093/annhyg/meh024

By:

KÜPPER, THOMAS E. A. H.;
STEFFGEN, JÜRGEN;
JANSING, PAUL

Publication type:

Article

Simulation Modeling of Aerial Work Completed by Helicopters in the Construction Industry Focused on Weather Conditions.

Published in:

Sustainability (2071-1050), 2021, v. 13, n. 24, p. 13671, doi. 10.3390/su132413671

By:

Bisták, Andrej;
Hulínová, Zdenka;
Neštiak, Michal;
Chamulová, Barbara

Publication type:

Article

Design method for expandable tubular energy absorber in crashworthy seat of civilian helicopter.

Published in:

Advances in Mechanical Engineering (Sage Publications Inc.), 2022, v. 14, n. 7, p. 1, doi. 10.1177/16878132221111019

By:

You Wang;
Ye-qi Hou;
Tao Yan;
Zhong-ren Wang;
Hai-sheng Liu;
Rui-hu Zhou;
Ke-peng Chen;
Wei Xiong

Publication type:

Article

The Aerodynamic Interaction Effects between the Rotor and Fuselage on the Drag Performance of a Civil Helicopter in Forward Flight.

Published in:

Applied Sciences (2076-3417), 2023, v. 13, n. 13, p. 7376, doi. 10.3390/app13137376

By:

Shi, Wenbo;
Zhang, Heng;
Li, Yuanxiang

Publication type:

Article

Technological Aspects of a Reparation of the Leading Edge of Helicopter Main Rotor Blades in Field Conditions.

Published in:

Applied Sciences (2076-3417), 2022, v. 12, n. 9, p. N.PAG, doi. 10.3390/app12094249

By:

Sałaciński, Michał;
Puchała, Krzysztof;
Leski, Andrzej;
Szymczyk, Elżbieta;
Hutsaylyuk, Volodymyr;
Bednarz, Arkadiusz;
Synaszko, Piotr;
Kozera, Rafał;
Olkowicz, Klaudia;
Głowacki, Dominik

Publication type:

Article