Results 81 to 90 of about 229,943 (347)
Actuator Rate Limiting Boundary Based on Pilot-vehicleSystem Stability Requirements
Hangkong gongcheng jinzhan, 2018 Actuator rate limiting is the primary course of aircraft pilot coupling(APC) for fly-by-wire(FBW) aircraft. The actuator rate limiting is modeled by describing function. The relationships between actuator rate limiting, APC onset frequency and PVS closed-
Liu Yan, Gao Zhenghong, Zhang Xingyu
doaj +1 more source
Advances in Civil Engineering, 2020 Pier settlement is unavoidable in the construction and operation of high-speed railways. This paper presents a work on the influence of pier settlement on additional structural stress of longitudinal connected track (LCT).
Hui Fang
doaj +1 more source
Development of an active fly-by-wire flight control system [PDF]
A summary of the YF-16 flight control system is presented. The basic functions of the flight control system are discussed, as well as the unique features such as Relaxed Static Longitudinal Stability (RSS), Fly By Wire (FBW), and Side Stick Pilot's ...
Anderson, C. A.
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Clustering Algorithm Reveals Dopamine‐Motor Mismatch in Cognitively Preserved Parkinson's Disease
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective To explore the relationship between dopaminergic denervation and motor impairment in two de novo Parkinson's disease (PD) cohorts. Methods n = 249 PD patients from Parkinson's Progression Markers Initiative (PPMI) and n = 84 from an external clinical cohort.
Rachele Malito +14 more
wiley +1 more source
Aerodynamic characteristics of a 1/6-scale model of the rotor systems research aircraft with the rotors removed [PDF]
A wind-tunnel investigation was conducted to refine the aerodynamic characteristics of the rotor systems research aircraft. For the investigation, a 1/6-scale model without a main rotor or a tail rotor was used.
Freeman, C. R. +2 more
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On the Stability of Tidal Streams [PDF]
, 2011 We explore the stability of tidal streams to perturbations, motivated by recent claims that the clumpy structure of the stellar streams surrounding the globular cluster Palomar 5 are the result of gravitational instability.
Moore, Ben, Schneider, Aurel
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Fluid Biomarkers of Disease Burden and Cognitive Dysfunction in Progressive Supranuclear Palsy
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Identifying objective biomarkers for progressive supranuclear palsy (PSP) is crucial to improving diagnosis and establishing clinical trial and treatment endpoints. This study evaluated fluid biomarkers in PSP versus controls and their associations with regional 18F‐PI‐2620 tau‐PET, clinical, and cognitive outcomes.
Roxane Dilcher +10 more
wiley +1 more source
NASA/FAA experiments concerning helicopter IFR airworthiness criteria [PDF]
A sequence of ground and flight simulation experiments was conducted as part of a joint NASA/FAA program to investigate helicopter instrument flight rules (IFR) airworthiness criteria.
Lebacqz, J. V.
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Arthritis Care &Research, EarlyView.Objective We aimed to identify unique disease trajectories within rheumatoid arthritis–associated interstitial lung disease (RA‐ILD) based on longitudinal forced vital capacity (FVC) values and their associated clinical outcomes. Methods We performed a cohort study of RA‐ILD within the Veterans Health Administration from 1999 to 2021.
Bryant R. England +9 more
wiley +1 more source
Space shuttle: Low speed stability and control characteristics of the North American Rockwell delta wing orbiter -134D and -134C configurations [PDF]
Longitudinal, lateral, and directional static stability and control characteristics of delta wing space shuttle orbiter models 134D and 134C at Mach 0 ...
Lester, W., Sokolsky, O.
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