Results 21 to 30 of about 885,530 (308)
Validation and optimization of the GSAMQ analytical propagator for spin-stabilized satellite
Brazilian Journal of Development, 2022 The aim of this paper is to validate the analytical propagator through simulations comparing the results with the real data and to optimize the work's source code so that it is processed faster.
M. Zanardi +2 more
semanticscholar +1 more source
Jurnal Pendidikan Jasmani dan Olahraga, 2020 One of the main components of badminton games is shuttlecock. The shuttlecock home industries in Indonesia mainly employ for about 20-40 freelance workers. The workers in the home industries are able to produce 500-100 slops of shuttlecock daily.
Ucup Yusup, Agus Rusdiana
doaj +1 more source
Analysis of stability derivatives important to recovery from spin
Aviation, 2016 This paper describes the numerical analysis of light aircraft stability derivatives in a wide range of angles of attack, important for recovery from spin.
Marcin Figat, Zdobysław Goraj
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Understanding the effect of seams on the aerodynamics of an association football [PDF]
, 2005 The aerodynamic properties of an association football were measured using a wind tunnel arrangement. A third scale model of a generic football (with seams) was used in addition to a 'mini-football'.
Carré M. J. +6 more
core +1 more source
Identification of roll damping coefficient using the free rotation method [PDF]
INCAS BulletinThe free rotation method represents the simplest method for roll damping coefficient identification in experimental aerodynamics. To apply this method, it is necessary to spin the model to a desired angular velocity and then release the model to spin ...
Ionut BUNESCU +3 more
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Experimental Validation of Elliptical Fin-Opening Behavior
Shock and Vibration, 2003 An effort to improve the performance of ordnance has led to the consideration of the use of folding elliptical fins for projectile stabilization. A second order differential equation was used to model elliptical fin deployment history and accounts for ...
James M. Garner +2 more
doaj +1 more source
Aerodynamic thermal analysis of a spinning winged projectile
Case Studies in Thermal Engineering, 2022 Aerodynamic heating of spinning flight vehicles have critical military applications such as flight testing, location tracking, stealth, and thermal protection. Based on the numerical method which is verified to be effective in the wind tunnel tests, this article discusses the aerodynamic thermal characteristics of a spinning winged projectile. Firstly,
Jun Zhang +6 more
openaire +2 more sources
Experimental determination of the aerodynamic coefficients of spinning bodies
The Aeronautical Journal, 2019 ABSTRACTTo accurately predict the probabilities of impact damage to aircraft from runway debris, it is important to understand and quantify the aerodynamic forces that contribute to runway debris lofting. These lift and drag forces were therefore measured in experiments with various bodies spun over a range of angular velocities and Reynolds numbers ...
S. Nguyen +4 more
openaire +4 more sources
Tire aerodynamics with actual tire geometry, road contact and tire deformation
Computational Mechanics, 2018 Tire aerodynamics with actual tire geometry, road contact and tire deformation pose tough computational challenges. The challenges include (1) the complexity of an actual tire geometry with longitudinal and transverse grooves, (2) the spin of the tire ...
T. Kuraishi, K. Takizawa, T. Tezduyar
semanticscholar +2 more sources
Vojnotehnički Glasnik, 2017 Aerospace as a whole, primarily aviation and planes, for a short time after 1903, greatly advance the frontiers of human activity. Initially, unsafe "flying device" the plane, has become a factor in loose resolving wars and one of the reliable means
Branko B. Bilbija
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