Results 21 to 30 of about 1,135,665 (360)

Autonomous “Figure-8” Flights of a Quadcopter: Experimental Datasets

open access: yesData, 2019
This article describes the data acquired from multiple flights of a custom-built quadcopter. The Quadcopter was programmed to fly a pre-defined “Figure-8” flight path, at a constant altitude.
Srikanth Gururajan, Ye Bai
doaj   +1 more source

Changing of flight phenology and ecotype expansion of the European corn borer (Ostrinia nubilalis Hbn.) in Hungary Part [PDF]

open access: yes, 2008
The studies aimed to acquire the widest possible information on the annual flight in Hungary of the European corn borer (ECB), Ostrinia nubilalis Hübner (Lepidoptera: Pyralidae).
Fuhrer J.   +20 more
core   +1 more source

Development and Testing of a Low-Cost Instrumentation Platform for Fixed-Wing UAV Performance Analysis

open access: yesDrones, 2018
The flight data of a fixed-wing Unmanned Aerial Vehicle (UAV) can be evaluated by its designers in order to analyze its performance, to validate the project criteria and to make new decisions based on the data analyses. In this paper, the authors propose
Tulio Dapper e Silva   +2 more
doaj   +1 more source

Using UAV-LTA for Environmental Monitoring [PDF]

open access: yesAerul şi Apa: Componente ale Mediului, 2019
UAV (unmanned aerial vehicles) technologies are currently mature proven by their use in both civilian and military fields. Atmospheric monitoring involves certain technical and operational conditions and limitations of UAVs, especially in situations ...
Vasile PRISACARIU, Sorin Cheval
doaj   +1 more source

Evaluating Fuel Consumption for Continuous Descent Approach Based on QAR Data

open access: yesPromet (Zagreb), 2019
Fuel savings are a significant aspect for evaluating the current and future technologies of civil aviation. Continuous-Descent Approach (CDA), as a representative of new concepts, requires a method for evaluating its fuel benefits.
Lisha Ye, Li Cao, Xuhui Wang
doaj   +1 more source

Design and simulation of the accumulator for servomechanisms of launch vehicle

open access: yesThe Journal of Engineering, 2020
The accumulator is a crucial component of the hydraulic power for servomechanisms of the launch vehicle, which has a significant effect on the performance and the mass power. Traditional design methods are mostly based on empirical formulas, which do not
Bo Zheng   +5 more
doaj   +1 more source

Developed criteria to improve pilot reporting of airplane vortex encounters

open access: yesAviation, 2020
Leading airplane vortices can be hazardous to following airplanes. The regulated minimum separations between following and leading airplanes are sometimes overjudged, hence causing reduction in the capacity of airports.
Aziz Al-Mahadin, Serdar Dalkilic
doaj   +1 more source

Database of daily Lagrangian Arctic sea ice parcel drift tracks with coincident ice and atmospheric conditions

open access: yesScientific Data, 2023
Since the early 2000s, sea ice has experienced an increased rate of decline in thickness, extent and age. This new regime, coined the ‘New Arctic’, is accompanied by a reshuffling of energy flows at the surface.
Sean Horvath   +7 more
doaj   +1 more source

Data-enhanced dynamic flight simulations for flight performance analysis

open access: yesAerospace Science and Technology, 2022
More often than not, airlines use aircraft in operating scenarios beyond their optimal design conditions, which negatively affects their performance characteristics. These effects are statistically reflected in flight operational data, which are indirectly constrained by air transportation management as well as aircraft design.
Dajung Kim, Arjit Seth, Rhea P. Liem
openaire   +2 more sources

Effects of Flight on Gene Expression and Aging in the Honey Bee Brain and Flight Muscle [PDF]

open access: yes, 2012
Honey bees move through a series of in-hive tasks (e.g., “nursing”) to outside tasks (e.g., “foraging”) that are coincident with physiological changes and higher levels of metabolic activity.
Ammons, Andrew   +5 more
core   +5 more sources

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