نتایج جستجو برای: angle of attack indicator

تعداد نتایج: 21181200  

Journal: :International Journal of Innovative Research in Science, Engineering and Technology 2014

2010
Rengasamy Ponnappan Sean O’Byrne

This work presents development of an oxygen-based diode laser absorption sensor designed to be used in a supersonic combustion ramjet engine inlet. The sensor uses free-space propagation of light from a vertical-cavity surface-emitting laser (VCSEL) to determine the temperature, velocity and angle of attack of an engine inlet in hypersonic flow. The report outlines the method of calculating the...

2015
Yifeng Liao Emily Hoffman Laurence D. Marks

The mechanical behaviour of materials at nanometre dimensions has been a major recent topic of research. In this study, the wear properties of a *60-nm thin foil made of the ductile fcc phase of a CoCrMo alloy were examined using in situ sliding test in a transmission electron microscope by sliding a silicon AFM tip on the fcc matrix under an applied normal load of 416–1,279 nN. The material ne...

2018
Hao Tang Liuxiong Xu Fuxiang Hu

Nylon (PA) netting is widely used in purse seines and other fishing gears due to its high strength and good sinking performance. However, hydrodynamic properties of nylon netting of different characteristics are poorly understood. This study investigated hydrodynamic characteristics of nylon netting of different knot types and solidity ratios under different attack angles and flow velocities. I...

Journal: :International journal of ophthalmology 2013
Jacky Lee Jimmy Lai Doris Yick Can Yuen

AIM To investigate the trabecular-iris angle with ultrasound biomicroscopy (UBM) post cataract extraction after an acute attack of phacomorphic angle closure. METHODS This prospective study involved 10 cases of phacomorphic angle closure that underwent cataract extraction and intraocular lens insertion after intraocular pressure (IOP) lowering. Apart from visual acuity and IOP, the trabecular...

Journal: :The Proceedings of the Fluids engineering conference 2019

Journal: :VESTNIK of the Samara State Aerospace University 2014

Journal: :The British journal of ophthalmology 1979
T J Playfair P G Watson

For the past 12 years peripheral iridectomy has been used as the initial surgical procedure after an acute attack of angle-closure glaucoma. The operation has been performed 2 to 5 days after the pressure has been controlled medically and has been followed routinely by prophylactic peripheral iridectomy in the fellow eye. Peripheral iridectomy for primary acute angle-closure glaucoma controlled...

2012
Sun-Mee Ryu Dae-Yeon Won Chang-Hun Lee Min-Jea Tahk

This paper presents the air-to-air missile autopilot design for a 180° heading reversal maneuver during boost-phase. The missile’s dynamics are linearized at a set of operating points for which angle of attack controllers are designed to cover an extended flight envelope. Then, angle of attack controllers are designed for this set of points, utilizing a pole-placement approach. The controllers’...

2004
Bei Lu Fen Wu SungWan Kim

This paper examines a switching LPV control approach to determine if it is practical to use for flight control designs within a wide angle of attack region. The approach is based on multiple parameter-dependent Lyapunov functions. The full parameter space is partitioned into overlapping subspaces and a family of LPV controllers are designed, each suitable for a specific parameter subspace. The ...

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