Results 31 to 40 of about 10,426 (300)
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
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Effect of lift force on the aerodynamics of dust grains in the protoplanetary disk [PDF]
, 2014 We newly introduce lift force into the aerodynamics of dust grains in the protoplanetary disk. Although many authors have so far investigated the effects of the drag force, gravitational force and electric force on the dust grains, the lift force has ...
Kimura, Shigeo S., Yamaguchi, Masaki S.
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Defence Technology, 2019 This paper introduces a novel approach for controlling the exterior ballistic properties of spin-stabilized bullets by optimizing their internal mass distributions.
Janne Lahti +3 more
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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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Biofluiddynamic scaling of flapping, spinning and translating fins and wings [PDF]
, 2009 Organisms that swim or fly with fins or wings physically interact with the surrounding water and air. The interactions are governed by the morphology and kinematics of the locomotory system that form boundary conditions to the Navier–Stokes (NS ...
Dickinson, Michael H., Lentink, David
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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
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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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Aerodynamic characteristics of an ogive-nose spinning projectile
Sādhanā, 2018 This work experimentally investigates the Robins–Magnus effect on a 5-caliber spinning projectile at a low subsonic Mach number of 0.1 corresponding to a Reynolds number of 3.2 × 105 based on the model length. The model configuration tested was a cylinder with spherically blunt tangent ogive nose portion.
T. J. S. Jothi, J Lijin
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Sensitivity of Spin Parameters to Uncertainties of the Aircraft Aerodynamic Model [PDF]
Journal of Aircraft, 2020 Reliable prediction of aircraft post-stalled dynamics is entirely dependent on the adequacy of the aerodynamic model. A mathematical model of aerodynamic characteristics of a light aircraft is developed for a wide range of angles of attack, sideslip, and angular rates.
Maria E. Sidoryuk +2 more
openaire +2 more sources