Results 101 to 110 of about 231,082 (310)
Main trends in intensification of rotor-screw processing of parts
MATEC Web of Conferences, 2018 The ways of productivity increase in details finishing-strengthening processing executed in rotor-screw technological systems are presented. It is shown that the use of rotor-screw machines makes it possible to combine the parts machining using a ...
Lebedev Valeriy A. +5 more
doaj +1 more source
Application of a system modification technique to dynamic tuning of a spinning rotor blade [PDF]
An important consideration in the development of modern helicopters is the vibratory response of the main rotor blade. One way to minimize vibration levels is to ensure that natural frequencies of the spinning main rotor blade are well removed from ...
Spain, C. V.
core +1 more source
Manoeuvrability assessment of a hybrid compound helicopter configuration [PDF]
, 2014 The compound helicopter design could potentially satisfy the new emerging requirements placed on the next generation of rotorcraft. The main benefit of the compound helicopter is its ability to reach speeds that significantly surpass the conventional ...
Ferguson, Kevin, Thomson, Douglas
core
Advanced Science, EarlyView.This study designed a tumor microenvironment‐responsive AIEgen nanoparticle for near‐infrared photoimmunotherapy, which inhibits primary tumors and metastasis by promoting pyroptosis and suppressing aerobic glycolysis. ABSTRACT In advanced osteosarcoma, tumor invasion often prevents complete resection, and immunotherapy is limited by the tumor's ...
Kaiyuan Liu +14 more
wiley +1 more source
Hollow-forged AHD steel rotor shafts for wind turbines – a case study on power density, costs and GWP [PDF]
Wind Energy ScienceHollow-forging and air-hardening ductile (AHD) forging steels are a novel manufacturing process and steel grade for the wind energy sector. Together they enable new rotor shaft design possibilities for wind turbines.
C. Hollas +7 more
doaj +1 more source
Wind-tunnel evaluation of an advanced main-rotor blade design for a utility-class helicopter [PDF]
An investigation was conducted in the Langley Transonic Dynamics Tunnel to evaluate differences between an existing utility-class main-rotor blade and an advanced-design main-rotor blade.
Cramer, Robert G., Jr. +4 more
core +1 more source
Advanced Science, EarlyView.Microglial AXL drives white matter repair after stroke by orchestrating the cleanup of myelin debris. Mechanistically, AXL signals through EGR1 to boost Smpd1 transcription, regulating sphingolipid metabolism and preventing lipid droplet toxicity. Restoring the pathway with ASM therapy mitigates damage, positioning AXL as a key node for therapeutic ...
Junqiu Jia +13 more
wiley +1 more source
Computational analysis of helicopter main rotor blades in ground effect [PDF]
Scientific Technical Review, 2016 Numerical investigation of an isolated representative helicopter main rotor has been performed in ANSYS FLUENT 16.2. In general, flow field around the rotor is unsteady, three-dimensional, complex and vortical.
Trivković Zorana +4 more
doaj
BEARINGLESS ROTOR SYSTEM MAIN COMPONENTS DESIGNING
Problems of Friction and WearBearingless rotor system design optimizes mechanical simplicity, eliminates frictional losses typical of conventional bearing systems, and improves the overall efficiency of the rotor system. Based on the findings of the research, it is possible to determine that composite materials can be applied in order to improve the performance of the rotorcraft ...
openaire +2 more sources
Acoustic test of a model rotor and tail rotor: Results for the isolated rotors and combined configuration [PDF]
Acoustic data from a model scale main rotor and tail rotor experiment in the NASA Langley 14 by 22 Foot Subsonic Tunnel are presented for the main rotor and trail rotor in isolation and for the two rotors operating together. Results for the isolated main
Burley, C. L. +2 more
core +1 more source