Results 91 to 100 of about 301 (127)

Effective Nature-Based Outdoor Play and Learning Environments for below-3 Children: A Literature-Based Summary. [PDF]

open access: yesInt J Environ Res Public Health
Craig D   +7 more
europepmc   +1 more source

Unsteady Linearized Lifting-Surface Theory in the Presence of a Free Surface

Journal of Ship Research, 1987
A new lifting-surface theory is developed for the computation of three-dimensional hydrodynamic pressures on thin structures in the presence of a free surface. Two interesting cases are treated: the steady case and the supercritical unsteady case. The theory is linearized and the problem is reduced to the solution of an integral equation where the ...
J. Leclerc, P. Salaun
openaire   +3 more sources

Theory of the lifting surface in unsteady motion in an inviscid fluid

Acta Mechanica, 1977
This paper considers the linearised unsteady motion of a lifting surface in a perfect fluid, proceeding from the fluid mechanics equations written in terms of distributions. A singular integral equation which determines the pressure on the lifting surface is deduced. The particular case of the lifting surface which moves over a (fictitious) cylindrical
openaire   +4 more sources

J0910201 Flutter Analysis of a Rectangular Shell Based on the Non-Planar Unsteady Lifting Surface Theory

The Proceedings of Mechanical Engineering Congress, Japan, 2014
Hiroya ITOH   +2 more
openaire   +3 more sources

J052024 Flutter Analysis of Cubic Cylindrical Shell Structures Based on the Non-Planar Unsteady Lifting Surface Theory

The Proceedings of Mechanical Engineering Congress, Japan, 2013
Hiroya ITOH   +2 more
openaire   +3 more sources

S1650102 Flutter Analysis of a Rectangular Sheet Based on the Unsteady Lifting Surface Theory and Wind-Tunnel Experiments : Influence of Aspect Ratio

The Proceedings of Mechanical Engineering Congress, Japan, 2014
Aki HASEGAWA   +2 more
openaire   +3 more sources

Wake generation compressibility effects in unsteady lifting surface theory

15th Applied Aerodynamics Conference, 1997
The role of compressibility during the initial stages of wake formation is investigated. It is shown that only the portion of the wake which is closest to the trailing edge is important with regard to compressibility. A simple approximation is derived which determines the relative magnitude of the compressible wake length that must be used in a ...
Ronald Epstein   +3 more
openaire   +1 more source

Unsteady Lifting Surface Theory for a Rotating Cascade of Swept Blades

Journal of Turbomachinery, 1989
A lifting surface theory is developed to predict the unsteady three-dimensional aerodynamic characteristics for a rotating subsonic annular cascade of swept blades. A discrete element method is used to solve the integral equation for the unsteady blade loading.
Hidekazu Kodama, Masanobu Namba
openaire   +1 more source

Application of unsteady lifting surface theory to propellers in forward flight

15th Structural Dynamics and Materials Conference, 1974
Development of a theory for determining the aerodynamic forces for unsteady, compressible subsonic flow on a propeller in forward flight. The acceleration potential method is used in developing the basic downwash integral equation which governs the flow.
C. HAMMOND, H. RUNYAN, J. MASON
openaire   +1 more source

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