Results 131 to 140 of about 542,371 (346)
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 +2 more
wiley +1 more source
Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроениеA methodology is proposed to estimate the probability of failure-free operation of a propulsion system with a pusher propeller of an aircraft under the influence of foreign objects flying out from under the wheels of the landing gear.
D. S. Markov +2 more
doaj +1 more source
Methods for comparative evaluation of propulsion system designs for supersonic aircraft [PDF]
The propulsion system comparative evaluation study was conducted to define a rapid, approximate method for evaluating the effects of propulsion system changes for an advanced supersonic cruise airplane, and to verify the approximate method by comparing ...
Chaloff, D. +5 more
core +1 more source
Monitoring wildlife using long‐endurance solar‐electric UAVs
Wildlife Biology, EarlyView.This report discusses the effectiveness of using small solar‐electric UAV (uncrewed aerial vehicles) for aerial wildlife monitoring. We review four years of aerial wildlife monitoring missions using a 5.5‐m wingspan, solar‐electric UAV that was equipped with a gimballed IR/RGB camera.
Götz Bramesfeld +3 more
wiley +1 more source
Evolution and Comparison of Three Typical Permanent Magnet Machines for All-Electric Aircraft Propulsion [PDF]
, 2023 Dingbang Long +3 more
openalex +1 more source
Small business innovation research. Abstracts of completed 1987 phase 1 projects [PDF]
Non-proprietary summaries of Phase 1 Small Business Innovation Research (SBIR) projects supported by NASA in the 1987 program year are given. Work in the areas of aeronautical propulsion, aerodynamics, acoustics, aircraft systems, materials and ...
core +1 more source
Propulsion simulation for magnetically suspended wind tunnel models [PDF]
The feasibility of simulating propulsion-induced aerodynamic effects on scaled aircraft models in wind tunnels employing Magnetic Suspension and Balance Systems. The investigation concerned itself with techniques of generating exhaust jets of appropriate
Beerman, Henry P. +5 more
core +1 more source
The British Journal of Sociology, EarlyView.ABSTRACT Tracing the early adoption of computer gang databases by the Los Angeles County Sheriff's Department and the Los Angeles Police Department in the 1980s to the deployment of computationally‐assisted surveillance during the Vietnam War, this paper uses a genealogical approach to compare surveillance technologies developed across the arc of ...
Christina Hughes
wiley +1 more source
Influence of the shock wave-turbulence interaction on the swirl distortion in hypersonic inlet
Advances in AerodynamicsThis study uses the Large Eddy Simulation (LES) technique to conduct an exhaustive analysis of the flow characteristics within the Rectangular-to-Elliptical shape Transition (REST) inlet under Mach 6 conditions.
Zhenlong Wu +4 more
doaj +1 more source