Hydrodynamic performance and calculation of lift–drag ratio on underwater glider
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Marine Science and Technology"
DOI: 10.1007/s00773-020-00716-7
Abstract: The hydrodynamic performance and lift-drag ratio of the underwater glider affected the state of its own operation. Therefore, a three-dimensional physical model and a mathematical model of a certain type of underwater glider are established.… read more here.
Keywords: glider; underwater glider; lift drag; drag ratio ... See more keywords
Onboard trajectory generation for gyroplane unpowered landing based on optimal lift-to-drag ratio target
Sign Up to like & getrecommendations! Published in 2018 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2018.09.023
Abstract: Abstract To achieve the autonomous unpowered landing for gyroplanes, an onboard trajectory generation method is presented in this paper. As a pivotal variable in the proposed method, the Lift-to-Drag Ratio will be uniquely determined in… read more here.
Keywords: trajectory generation; generation; lift drag; unpowered landing ... See more keywords
Inverse aerodynamic design for DEP propeller based on desired propeller slipstream
Sign Up to like & getrecommendations! Published in 2020 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2020.105820
Abstract: Abstract Considering the multi-propeller characteristics of DEP (distributed electric propulsion) configuration, the lift-to-drag ratio of the wing is improved by optimizing the slipstream of the propeller, rather than changing the chord length and twist distribution… read more here.
Keywords: lift drag; propeller; drag ratio; slipstream ... See more keywords
Framework of airfoil max lift-to-drag ratio prediction using hybrid feature mining and Gaussian process regression
Sign Up to like & getrecommendations! Published in 2021 at "Energy Conversion and Management"
DOI: 10.1016/j.enconman.2021.114339
Abstract: Abstract The maximum lift-to-drag coefficient of an airfoil directly affects the aerodynamic performance of wind turbine. Machine learning methods are known for being really effective in helping to predict this parameter in a faster and… read more here.
Keywords: lift drag; feature mining; process; feature ... See more keywords
An efficient computational framework for hydrofoil characterisation and tidal turbine design
Sign Up to like & getrecommendations! Published in 2019 at "Ocean Engineering"
DOI: 10.1016/j.oceaneng.2018.10.032
Abstract: Abstract Blade element momentum (BEM) modelling offers a computationally inexpensive means of analysing turbine performance. Lift and drag coefficient data-sets specific to the operating conditions of the turbine must be input into a BEM model.… read more here.
Keywords: lift drag; turbine; vertical axis; hydrofoil ... See more keywords
Birds repurpose the role of drag and lift to take off and land
Sign Up to like & getrecommendations! Published in 2019 at "Nature Communications"
DOI: 10.1038/s41467-019-13347-3
Abstract: The lift that animal wings generate to fly is typically considered a vertical force that supports weight, while drag is considered a horizontal force that opposes thrust. To determine how birds use lift and drag,… read more here.
Keywords: birds repurpose; lift drag; repurpose role; role drag ... See more keywords
Aerodynamic performance improvement of a canard control missile
Sign Up to like & getrecommendations! Published in 2017 at "Aircraft Engineering and Aerospace Technology"
DOI: 10.1108/aeat-01-2016-0019
Abstract: Purpose This paper aims to analyze the influence of the changings in geometrical parameters on the aerodynamic performance of the control canard projectiles. Design/methodology/approach Because of the mentioned point, the range of projectiles increment has… read more here.
Keywords: taper ratio; control; ratio; lift drag ... See more keywords
A New Aerodynamic Optimization Method with the Consideration of Dynamic Stability
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Aerospace Engineering"
DOI: 10.1155/2021/5551094
Abstract: Dynamic stability is significantly important for flying quality evaluation and control system design of the advanced aircraft, and it should be considered in the initial aerodynamic design process. However, most of the conventional aerodynamic optimizations… read more here.
Keywords: dynamic stability; optimization method; method; lift drag ... See more keywords
The Impact of Icing on the Airfoil on the Lift-Drag Characteristics and Maneuverability Characteristics
Sign Up to like & getrecommendations! Published in 2021 at "Mathematical Problems in Engineering"
DOI: 10.1155/2021/5568740
Abstract: Icing has now become an important factor endangering flight safety. 0is paper takes the icing data of the NACA 23012 airfoil as an example, establishes an icing influence model for real-time simulation based on icing… read more here.
Keywords: aircraft; impact icing; lift drag; flight ... See more keywords
The effects of rectangular riblets on rectangular micro air vehicles for drag reduction
Sign Up to like & getrecommendations! Published in 2017 at "Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering"
DOI: 10.1177/0954410016638868
Abstract: Reduced drag, increased lift and, consequently, increased vital ratio and lift-to-drag coefficients are crucial in almost all efficient micro air vehicles. Riblet geometries use a variety of air vehicles. Further investigation on micro air vehicles… read more here.
Keywords: air; lift drag; micro air; air vehicles ... See more keywords
Maximizing Lift-to-Drag and Thrust-to-Drag Ratios for Trimmed Hypersonic Vehicles
Sign Up to like & getrecommendations! Published in 2023 at "Journal of Aircraft"
DOI: 10.2514/1.c037186
Abstract: Ways to maximize the lift-to-drag ([Formula: see text]) and the thrust-to-drag ([Formula: see text]) ratios of hypersonic vehicles are computed using the reduced-order model Michigan-AFRL Scramjet in Vehicle (MASIV). The 84 geometries considered are variations… read more here.
Keywords: formula see; hypersonic vehicles; thrust drag; see text ... See more keywords