would a butterflys wing not flutter
W. G. Molyneux has written: 'Wind tunnel flutter tests on an M-planform wing' 'The aerodynamic effects of aspect ratio and sweepback on wing flutter' 'Summary of present position on flutter and derivative programme'
take wing, soar, glide, wing, sail, hover, flutter, flit, pilot, steer, navigate
take wing, soar, glide, wing, sail, hover, flutter, flit, pilot, steer, navigate
Robert M. Bennett has written: 'Computational test cases for a rectangular supercritical wing undergoing pitching oscillations' -- subject(s): Computational fluid dynamics, Unsteady aerodynamics, Aircraft parts, Supercritical wings, Wind tunnel tests, Wing oscillations, Rectangular wings 'Application of Zimmerman flutter-margin criterion to a wind-tunnel model' -- subject(s): Flutter (Aerodynamics), Oscillating wings (Aerodynamics) 'Wing flutter calculations with the CAP-TSD unsteady transonic small disturbance program' -- subject(s): Mathematical models, Flutter (Aerodynamics), Unsteady flow (Aerodynamics)
Fred D Bergen has written: 'Shape sensitivity analysis of flutter response of a laminated wing'
An orangeful of flutter honey.
If you reduce wing size the aircraft will take longer distance and will have to attain higher ground speed before lift-off.
Winglets have typically been added to existing wing designs to increase the total lift and reduce the vertices created by the wing tip. Airports expressed a desire for wingspans not to exceed 80m as this would cause major problems with gate and taxiway designs. The Airbus A380 has a wingspan of 79.65m, so adding winglets would not have been an option and the wing was also designed from scratch to reduce the aerodynamic need. To reduce the wing tip vortices, the A380 wing has 'wing tip fences', small vertical wings that extend above and below the wing tip.
butter and mutter rhymes with flutter
Aerodynamic Flutter is usually applied to wings or ailerons and is the unstable oscillation caused by interaction between aerodynamic forces, elastic reactions in the structure and the force of inertia. Unless damped quickly flutter will break a wing. The cure for flutter is usually to dispose the weights so that the centre of gravity of the wing is as far forward as possible. Ailerons, elevators and rudders are mass-balanced to prevent flutter. Flutter is a dangerous phenomenon encountered in flexible structures subjected to aerodynamic forces. This includes aircraft, buildings, telegraph wires, stop signs, and bridges. Flutter occurs as a result of interactions between aerodynamics, stiffness, and inertial forces on a structure. Flutter may be initiated by a rotation of the airfoil. As the increased force causes the airfoil to rise, the torsional stiffness of the structure returns the airfoil to zero rotation. The bending stiffness of the structure tries to return the airfoil to the neutral position, but now the airfoil rotates in a nose-down position. Again the increased force causes the airfoil to plunge and the torsional stiffness returns the airfoil to zero rotation. The cycle is completed when the airfoil returns to the neutral position with a nose-up rotation.
I can flutter like a bird. Can you make your arms flutter like birds' wings?