Results 91 to 100 of about 182,267 (308)

Establishment and Verification of the UAV Coupled Rotor Airflow Backward Tilt Angle Controller

open access: yesDrones
At present, all the flight controllers of agricultural UAVs cannot accurately and quickly control the influencing factors of the UAV coupled rotor airflow backward tilt angle during the application process.
Han Wu   +9 more
doaj   +1 more source

An Auto-Tuning PI Control System for an Open-Circuit Low-Speed Wind Tunnel Designed for Greenhouse Technology

open access: yesSensors, 2015
Wind tunnels are a key experimental tool for the analysis of airflow parameters in many fields of application. Despite their great potential impact on agricultural research, few contributions have dealt with the development of automatic control systems ...
Karlos Espinoza   +4 more
doaj   +1 more source

Description and test results of a digital supersonic propulsion system integrated control [PDF]

open access: yes
A digitally implemented integrated inlet/engine control system was developed and tested on a mixed compression, Mach 2.5, supersonic inlet and augmented turbofan engine.
Arpasi, D. J.   +2 more
core   +1 more source

Thermal 3D CFD Simulation with Active Transparent Façade in Buildings [PDF]

open access: yes, 2018
In recent years active façades have acquired greater importance given their capacity to improve the energy efficiency of buildings. One such type is the so-called Active Transparent Façade (ATF). A 3D numerical model based on computational fluid dynamics
Fernández Nieto, Enrique Domingo   +4 more
core   +1 more source

Adaptive Carbon Nanotube Patches for Versatile Electronic Textiles and Wind‐Harvesting Applications

open access: yesAdvanced Materials Technologies, EarlyView.
An adhesion‐tunable electronic textile patch based on a carbon nanotube/paraffin composite is presented, enabling direct, adhesive‐free integration with fabrics. Pressure‐responsive bonding allows reversible or permanent attachment on demand.
Seokwon Joo   +4 more
wiley   +1 more source

A throat-bypass stability system for a YF-12 aircraft research inlet using self-acting mechanical valves [PDF]

open access: yes
Results of a wind tunnel investigation are presented. The inlet was modified so that airflow can be removed through a porous cowl-bleed region in the vicinity of the throat.
Cole, G. L.   +2 more
core   +1 more source

Airborne Particles in Museums [PDF]

open access: yes, 1993
Presents one in a series of research activities aimed at a better understanding of the origin and fate of air pollution within the built ...
Harvey I. H. Liu   +6 more
core  

Magnetic Textiles: A Review of Materials, Fabrication, Properties, and Applications

open access: yesAdvanced Materials Technologies, EarlyView.
Magnetic textiles (M‐textiles) are emerging as a programmable materials platform that merges magnetic matter with hierarchical textile structures. This article consolidates magnetic material classes, textile architectures, and fabrication and magnetization strategies, revealing structure–property–function relationships that govern magneto‐mechanical ...
Li Ke   +3 more
wiley   +1 more source

Design requirements for laminar airflow clean rooms and devices [PDF]

open access: yes
Laminar airflow and airborne contamination control concepts with clean room specifications and laminar flow facility ...
Garst, D. M.   +2 more
core   +1 more source

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