Results 11 to 20 of about 611,651 (272)
Aeroacoustics of a coaxial rotor in level flight [PDF]
, 2008 The aeroacoustic characteristics of a coaxial system with teetering rotors in level forward °ight are com- pared to those of an equivalent articulated single rotor with the same solidity.
Brown, R.E. +5 more
core +12 more sources
Tapered coaxial microwave probe sensor
Electronics Letters, 2004 A tapered coaxial cavity probe sensor is introduced to demonstrate progressive improvements in the spatial resolution of metallisation patterns for scanning microwave microscopy (SMM) applications. Two versions of this design are described and experimental results illustrate the advantages of a reduced end area surrounding the projecting probe.
Valiente, L. A. +2 more
openaire +2 more sources
A comparison of coaxial and conventional rotor performance [PDF]
, 2010 The performance of a coaxial rotor in hover, in steady forward flight, and in level, coordinated turns is contrasted with that of an equivalent, conventional rotor with the same overall solidity, number of blades, and blade aerodynamic properties.
Brown, Richard E., Kim, Hyo Won
core +4 more sources
Modelling the aerodynamics of coaxial helicopters : from an isolated rotor to a complete aircraft [PDF]
, 2008 This paper provides an overview of recent research on the aerodynamics of coaxial rotors at the Rotorcraft Aeromechanics Laboratory of the Glasgow University Rotorcraft Laboratories.
Brown, R.E. +7 more
core +4 more sources
Probe Feed Rectangular Microstrip Patch Antenna for1.5 GHz WLAN Application
Tikrit Journal of Pure Science, 2023 In this paper the design of coaxial probe feed one layer microstrip patch antenna (MSA) . for 1.433 GHz WLAN application is presented, The impedance equivalent and the radiation physiognomies of this proposed assembly are planned and analyzed.
Faris Salih Ata Allah +2 more
doaj +1 more source
High spatial resolution Kelvin probe force microscopy with coaxial probes [PDF]
Nanotechnology, 2012 Kelvin probe force microscopy (KPFM) is a widely used technique to measure the local contact potential difference (CPD) between an AFM probe and the sample surface via the electrostatic force. The spatial resolution of KPFM is intrinsically limited by the long range of the electrostatic interaction, which includes contributions from the macroscopic ...
Brown, Keith A. +2 more
openaire +4 more sources
Optimized High-Temperature Irradiation-Resistant Thermocouple for Fast-Response Measurements [PDF]
EPJ Web of Conferences, 2021 The high-temperature irradiation-resistant thermocouple is the only temperature probe proven to withstand the high-temperature (>1290°C), high-radiation (a fluence of up to ∼1 × 1021 n/cm2) environments of nuclear reactor fuel design testing and/or over ...
Skifton Richard +2 more
doaj +1 more source
A rational approach to comparing the performance of coaxial and conventional rotors [PDF]
, 2009 The merit, in terms of its efficiency and performance, of the twin, contrarotating coaxial rotor configuration over the more conventional single rotor system has long been a point of contention.
Brown, R.E., Kim, Hyo Wan
core +4 more sources
Sensors, 2020 We report on the development of a method for measuring the permittivity and conductivity of fluids inside a sealed tank (or a pipe) by using an embedded coaxial probe.
Andrew P. Gregory +3 more
doaj +1 more source
Predicting the Sensing Radius of a Coaxial Probe Based on the Probe Dimensions
IEEE Transactions on Antennas and Propagation, 2020 The coaxial probe technique is used to acquire the dielectric properties of biological tissues in the microwave frequency range. To dielectrically characterize heterogeneous samples, the sensing radius of the probe must be known. Thus, in this article, for the first time, both experimental and numerical investigations were conducted to analyze and ...
Alessandra La Gioia +3 more
openaire +2 more sources