Plunging airfoils are investigated for applications such as Micro-Air Vehicles (MAVs) and bird and fish like propulsion. Plunging or flapping wings can provide more propulsive efficiency than that of fixed wings, especially at small to moderate Reynolds numbers, where the MAVs (due to their small size) operate. Furthermore, it has been observed that birds and insects rely on detaching and separ...

Linear unsteady aerodynamic models are obtained for a NACA 0006 airfoil in a wind tunnel experiment at Reynolds number 65,000. A family of system identification maneuvers, based on a canonical step-up, hold maneuver, are specifically designed to extract relevant unsteady information from phase averaged wind tunnel measurements. Linear models based on these maneuvers are constructed using OKID/E...

This should be a good book for use in teachij^ higher school classes and junior science students t / main facts of human anatomy including microscop anatomy or histology. It is not recommended for } , medical student, however, because with the lirn't .g time available in the average medical course i' j necessary for him to plunge direct into a detau study of the subject without spending any tim...

In classical aeroelasticity, the typical at plate section consists of two degrees of freedom, namely pitch and plunge. Current resources o er the capability of enhancing the response of the typical aerofoil by making it adaptive. This project investigates the dynamic aeroelastic e ects of two of these options: trailing edge aps and chordwise (camber) deformations. The structural model is assume...

This paper presents the design of NetPIPE, a new Network Protocol Independent Performance Evaluator. NetPIPE maps the performance of a network across a wide range and presents the data in a new manner. Its protocol independence allows for visualization of the overhead associated with a protocol layer. Using Net-PIPE has led to the discovery of a deep plunge in ATM performance for certain transf...

Among the members of the Association of Southeast Asian Nations (ASEAN), there are wide economic gaps between more developed countries including Singapore and Thailand and less developed ones including Vietnam. The gaps represents one of the largest obstacles to realizing the ASEAN’s goal of market integration and the situation is at risk of getting even worse next year, as it is increasingly l...

Nomenclature C = chord length, m C T = thrust coefficient f = flapping frequency, Hz h tip = plunge amplitude at the wing tip, m k = ωC∕U ∞ , reduced frequency l span = wingspan, m Re = U ∞ C∕ν, Reynolds number r z = z-directional distance away from the wing tip, m S wing = wing area, m 2 St = fh tip ∕U ∞ , Strouhal number U ∞ = freestream velocity, m∕s ν = kinematic viscosity of fluid, m 2 ∕s ...

woman seeking relief from menopausal.svmptoms is common in Westesn society. Many women, however, suffer in silence or take the plunge towards synthetic hormone replacement therapy (HRT). Whilst the untoward symptoms of the female climacteric (change of life) are troublesome, the postmenopausal onslaught of degenerative diseases is the real health problem that faces the mature female. New inform...

This paper presents simulations of unsteady flow past a plunging airfoil using the highorder spectral difference (SD) method. Both third-order and fourth-order SD methods are used on unstructured quadrilateral grids. The vortex shedding pattern of an airfoil in an oscillating plunge motion becomes asymmetric at a sufficiently high frequency. The SD method is able to capture this effect and reve...

Explosive ordnance disposal robot path planning is a nondeterministic polynomial time (NP) problem, traditional optimization methods are not very effective to it, which are easy to plunge into local minimum. In this paper, a new algorithm-Danger Model Immune Wavelet Neural Network (DIWNN) is improved. It is proposed to initialize the weights and biases of wavelet neural network (WNN), the ergod...