Results 21 to 30 of about 1,019,352 (234)
Aerodynamic Analysis of a Spinning Missile with Dithering Canards [PDF]
Journal of Spacecraft and Rockets, 2002 A generic spinning missile with dithering canards is used to demonstrate the utility of an overset structured grid approach for simulating the aerodynamics of rolling airframe missile systems. The approach is used to generate a modest aerodynamic database for the generic missile.
Tor A. Nygaard, Robert L. Meakin
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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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Development of Transonic Unsteady Aerodynamic Reduced-Order Models Using System Identification Techniques [PDF]
Carloni, A. C. N. and Azevedo, J. L. F., "Development of Transonic
Unsteady Aerodynamic Reduced-Order Models Using System Identification
Techniques". Paper No. ENC-2022-0192, 19th ENCIT Congress. Nov. 2022, 2023 The present paper develops a reduced-order model capable of modeling unsteady aerodynamic loads in the transonic regime using system identification techniques. The computational fluid dynamics (CFD) calculations are based on the Euler equations and the code uses a finite volume formulation for general unstructured grids.
arxiv +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
doaj +1 more source
NeuroBEM: Hybrid Aerodynamic Quadrotor Model [PDF]
Robotics: Science and Systems (RSS), 2021, 2021 Quadrotors are extremely agile, so much in fact, that classic first-principle-models come to their limits. Aerodynamic effects, while insignificant at low speeds, become the dominant model defect during high speeds or agile maneuvers. Accurate modeling is needed to design robust high-performance control systems and enable flying close to the platform ...
arxiv +1 more source
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
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State-space aerodynamic model reveals high force control authority and predictability in flapping flight [PDF]
Journal of Royal Society Interface, Volume 18, Issue 181 (2021), 2021 Flying animals resort to fast, large-degree-of-freedom motion of flapping wings, a key feature that distinguishes them from rotary or fixed-winged robotic fliers with limited motion of aerodynamic surfaces. However, flapping-wing aerodynamics are characterised by highly unsteady and three-dimensional flows difficult to model or control, and accurate ...
arxiv +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
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