Results 41 to 50 of about 909,729 (313)
Aerodynamic Simulation of Helicopter Based on Polyhedron Nested Grid Technology
Applied Sciences, 2020 In this paper, a computational fluid dynamics (CFD) simulation method based on the polyhedral nested grid is developed. By comparing the simulation and test results of the hovering flow field of the Caradonna–Tung rotor, the forward flight flow field of ...
Chenglong Zhou, Ming Chen
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Development of a regenerative pump impeller using rapid manufacturing techniques [PDF]
, 2010 This paper presents a method of rapid manufacture used in the development of a regenerative pump impeller. Rapid manufacturing technology was used to create complex impeller blade profiles for testing as part of a regenerative pump optimisation process ...
Quail, Francis J. +2 more
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Nihon Kikai Gakkai ronbunshu, 2022 The vibration characteristics of a bladed disk with the continuous ring type structure have been studied extensively, and the vibration response analyses considering the friction damping between adjacent shrouds have been performed in the recent blade ...
Yasutomo KANEKO +3 more
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Influence of width on the tensile properties of ±45° fiber-reinforced composites using DIC and AE
Materials & DesignThis study investigates the width-dependent tensile behavior and damage mechanisms of ±45° carbon fiber–reinforced polymer (CFRP) laminates through an integrated Digital Image Correlation (DIC) and Acoustic Emission (AE) monitoring framework.
Yi Long +5 more
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Известия высших учебных заведений. Поволжский регион:Технические науки, 2023 Background. Improving designs, expanding the range and increasing the production of quadrocopters are stable global trends. Progressive technical solutions, new materials, modern microelectronics are used in the designs of quadrocopters.
E.D. Kartashova
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i-Perception, 2017 In January 2017, a large wind turbine blade was installed temporarily in a city square as a public artwork. At first sight, media photographs of the installation appeared to be fakes – the blade looks like it could not really be part of the scene.
George Mather, Robert Lee
openaire +4 more sources
Hingeless helicopter rotor with improved stability [PDF]
, 1976 Improved stability was provided in a hingeless helicopter rotor by inclining the principal elastic flexural axes and coupling pitching of the rotor blade with the lead-lag bending of the blade.
Bousman, W. G. +3 more
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Advanced Biology, EarlyView.This study introduces and investigates different‐sex gonad transplants in a mouse model of gender‐affirming hormone therapy. Ovaries and testes implanted into gonadectomized adults exhibit gametogenesis and steroidogenesis independent of the sex of the host.
Daniel R. Pfau +8 more
wiley +1 more source
, 1974 Radially extending rotor blades are disposed on a hub to form a supersonic propulsion fan for a turbofan engine. The peripheral spacing of the blades is such as to avoid forming a channel or passageway between adjacent blades.
Goldstein, A. W.
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Aerodynamic and acoustic analysis of helicopter main rotor blade tips in hover [PDF]
, 2016 Purpose: The design of main rotor blade tips is of interest to helicopter manufactures since the tip details affect the performance and acoustics of the rotor. The paper aims to discuss this issue.
Barakos, George +4 more
core +1 more source