Influence of Lift Offset on Rotorcraft Performance [PDF]
The influence of lift offset on the performance of several rotorcraft configurations is explored. A lift-offset rotor, or advancing blade concept, is a hingeless rotor that can attain good efficiency at high speed, by operating with more lift on the ...
Johnson, Wayne
core +2 more sources
DETERMINATION OF OPTIMAL AZIMUTH FOR MOUNTING ULTRALIGHT COAXIAL HELICOPTER BLADES
Вестник Донского государственного технического университета, 2018 The possibility of reducing vibration of the ultralight coaxial helicopter blades on the through harmonic wave by mounting blades on the optimal azimuth is shown.
Vitaly V. Dudnik, Vladimir A. Kolot
doaj
Assessment of aerodynamic and dynamic models in a comprehensive analysis [PDF]
The history, status, and lessons of a comprehensive analysis for rotorcraft are reviewed. The development, features, and capabilities of the analysis are summarized, including the aerodynamic and dynamic models that were used.
Johnson, W.
core +1 more source
Computations of Torque-Balanced Coaxial Rotor Flows [PDF]
Interactional aerodynamics has been studied for counter-rotating coaxial rotors in hover. The effects of torque balancing on the performance of coaxial-rotor systems have been investigated.
Chan, William M. +2 more
core +1 more source
Simulating wind turbine interactions using the vorticity transport equations [PDF]
, 2009 The aerodynamic interactions that can occur within a wind farm result in the constituent turbines generating a lower power output than would be possible if each of the turbines were operated in isolation.
Brown, R.E., Fletcher, Timothy M.
core
Research on Attitude Detection and Flight Experiment of Coaxial Twin-Rotor UAV. [PDF]
Sensors (Basel), 2022 You D, Hao Y, Xu J, Yang L.
europepmc +1 more source
Baseline Assumptions and Future Research Areas for Urban Air Mobility Vehicles [PDF]
NASA is developing Urban Air Mobility (UAM) concepts to (1) create first-generation reference vehicles that can be used for technology, system, and market studies, and (2) hypothesize second-generation UAM aircraft to determine high-payoff technology ...
Antcliff, Kevin +3 more
core +1 more source
Modeling and Robust Tracking Decoupling Control of a Coaxial Unmanned Helicopter Based on the Improved Alternating Direction Method of Multipliers. [PDF]
Comput Intell Neurosci, 2022 Xu A, Wang F, Chen M.
europepmc +1 more source
Development of Rail Camera for Bridge inspection with Attitude Control using Thrust of Rotors
e-Journal of Nondestructive TestingA lot of concrete structures are deteriorating to dangerous levels throughout Japan. These concrete structures need to be inspected regularly to ensure they are safe enough to be used.
Tatsuya Iwamoto +3 more
doaj +1 more source
Tradeoff analysis of technology needs for public service helicopters [PDF]
The design requirements for a family or type of Public Service Helicopter (PSH) is examined which will satisfy the needs of municipal and state governments in the following mission areas: Emergency Medical Service--Airborne Rescue Squad; Law Enforcement;
Bauchspies, J. S. +2 more
core +1 more source