Results 51 to 60 of about 10,092 (210)

Research on a Drone‐Based Vacant Parking Detection System

IEEJ Transactions on Electrical and Electronic Engineering, EarlyView.
It can be difficult to know which spaces are available in parking lots and bicycle parking areas, so knowing the availability status is necessary for efficient parking. Therefore, in this study, we developed the drone that can display the availability status. Availability is determined by whether it can read a QR code attached to the ground. To conduct
Hiroki Mineshita, Syunsuke Wakamatsu, Hun‐ok Lim   +2 more
wiley   +1 more source

Development of Simulation Program for Tilt Rotor Aircraft

Journal of Control, Automation and Systems Engineering, 2005
VTOL(Vertical Take-Off and Landing) aircraft is attractive due to the reason that it is not necessary to have long runway. However a rotorcraft has a definite limitation to fly at the high speed due to the stall at the tip of rotor. To solve this problem, tilt rotor, tilt wing and lift fan were researched and developed.
openaire   +2 more sources

Characteristics of unique cap, Tsurushi and Hata clouds around Mount Fuji

Weather, EarlyView.
Distinct clouds, such as cap clouds, Tsurushi (a type of lenticular cloud) and Hata (banner cloud‐like clouds), frequently form around Mount Fuji, an isolated peak with a slightly elliptical conical shape. Here, we examine their characteristics and occurrence patterns.
Hiroyuki Kusaka, Tomoko Kodama, Riho Ito, Tomoka Maeda, Natsuki Takada, Rio Ishikawa, Kakeru Konnai, Risa Asano, Miru Maebata, Ken T. Murata   +9 more
wiley   +1 more source

Estimating red deer Cervus elaphus population density using drones in a steep and rugged terrain

Wildlife Biology, EarlyView.
Precise and accurate information about population density, crucial for wildlife management, is difficult to obtain for elusive species living in dense forests or steep and inaccessible terrain. Using unmanned aerial vehicles (UAVs), we developed a method for obtaining absolute population estimates of ungulates living in steep, rugged, and partly ...
Julie Bommerlund, Torbjørn Ergon, Simon Filhol, Atle Mysterud   +3 more
wiley   +1 more source

Design and implementation of a spliced tilting dual rotor and its LADRC flight control

Hangkong gongcheng jinzhan
The configuration characteristics of multi rotor unmanned aerial vehicles determine that they are difficult to adapt to complex flight missions. To meet different mission requirements，combining and assembling specific configuration aircraft should be a ...
LIU Kun, XU Jinfa
doaj   +1 more source

Impact locations and damage to civil and military rotary-wing aircraft from wildlife strikes

Human-Wildlife Interactions, 2017
Rotary-wing aircraft (e.g., helicopters and tilt-wing aircraft) are an important component of all U.S. military services and the U.S. civil aviation industry.
Brian E. Washburn, Paul J. Cisar, Travis L. DeVault   +2 more
doaj   +1 more source

Remote Sensing of Endogenous Pigmentation by Inducible Synthetic Circuits in Grasses

Plant Biotechnology Journal, EarlyView.
ABSTRACT Plant synthetic biology holds great promise for engineering plants to meet future demands. Genetic circuits are being designed, built and tested in plants to demonstrate the proof of concept. However, developing these components in monocots, which the world relies on for grain, lags behind dicot models, such as Arabidopsis thaliana and ...
Dong‐Yeon Lee, Lucia Acosta‐Gamboa, Luke Saleh, Sunita Pathak, Nathan Swyers, Austin Morgan, Susan Meerdink, Caroline Kuzio, Santiago Calderon, Hudanyun Sheng, Samuel Kenney, Alina Zare, Malia Gehan, Dmitri A. Nusinow   +13 more
wiley   +1 more source

Friction Shock Absorbers and Reverse Thrust for Fast Multirotor Landing on High‐Speed Vehicles

Journal of Field Robotics, Volume 43, Issue 2, Page 1068-1090, March 2026.
ABSTRACT Typical landing gears of small uninhabited aerial vehicles (UAV) limit their capability to land on vehicles moving at more than 20–50 km/h due to high drag forces, high pitch angles and potentially high relative horizontal velocities. To enable landing at higher speeds, a combination of lightweight friction shock absorbers and reverse thrust ...
Isaac Tunney, John Bass, Alexis Lussier Desbiens   +2 more
wiley   +1 more source

Calculated performance, stability and maneuverability of high-speed tilting-prop-rotor aircraft [PDF]

The feasibility of operating tilting-prop-rotor aircraft at high speeds is examined by calculating the performance, stability, and maneuverability of representative configurations. The rotor performance is examined in high-speed cruise and in hover.
Bowles, Jeffrey V., Johnson, Wayne, Lau, Benton H.   +2 more
core   +1 more source

Segmented Gurney Flaps for Improved Wind Turbine Wake Recovery

Wind Energy, Volume 29, Issue 3, March 2026.
ABSTRACT When wind passes through the rotor of a wind turbine, the velocity is decreased while turbulence is increased. The region of decreased wind speed behind the rotor is known as the wind turbine wake and is bounded by a complex structure of helical vortices. This structure occurs to be more stable in low ambient turbulence and low tip speed ratio
Nirav Dangi, Koen Boorsma, Edwin Bot, Wim Bierbooms, Wei Yu   +4 more
wiley   +1 more source