March 29, 2018

New PDF release: Aerodynamics of Low Reynolds Number Flyers

By Wei Shyy, Yongsheng Lian, Jian Tang, Dragos Viieru, Hao Liu

ISBN-10: 0521882788

ISBN-13: 9780521882781

Low Reynolds quantity aerodynamics is critical to a couple of typical and man-made flyers. Birds, bats, and bugs were of curiosity to biologists for years, and lively research within the aerospace engineering group, encouraged through curiosity in micro air cars (MAVs), has been expanding speedily. the first concentration of this e-book is the aerodynamics linked to mounted and flapping wings. The booklet ponder either organic flyers and MAVs, together with a precis of the scaling laws-which relate the aerodynamics and flight features to a flyer's sizing at the foundation of straightforward geometric and dynamics analyses, structural flexibility, laminar-turbulent transition, airfoil shapes, and unsteady flapping wing aerodynamics. The interaction among flapping kinematics and key dimensionless parameters corresponding to the Reynolds quantity, Strouhal quantity, and diminished frequency is highlighted. some of the unsteady raise enhancement mechanisms also are addressed, together with modern vortex, speedy pitch-up and rotational movement, wake seize, and clap-and-fling.

Show description

Read or Download Aerodynamics of Low Reynolds Number Flyers PDF

Best aeronautics & astronautics books

Download e-book for kindle: Principles of Turbomachinery in Air-Breathing Engines by Erian A. Baskharone

This booklet starts with a evaluate of uncomplicated thermodynamics and fluid mechanics ideas to purpose their software to aerothermodynamics and real-life layout concerns. The procedure is perfect for the reader who will face functional occasions and layout judgements within the gasoline turbine undefined. between its beneficial properties are an emphasis at the position of entropy in assessing laptop functionality, a well timed overview of circulate constructions, revisiting the subsonic and supersonic De Laval nozzle because it applies to bladed turbomachinery parts, and an utilized assessment of boundary layer rules.

Read e-book online The Aerodynamic Design of Aircraft PDF

Dietrich Kuchemann's The Aerodynamic layout of plane is as proper and as ahead having a look at the present time because it was once while it used to be first released in 1978. It contains the philosophy and life's paintings of a special and visionary mind. established upon fabric taught in a direction at Imperial collage London, the perception and instinct conveyed by way of this article are undying.

Get Rockets and People Vol. 4 The Moon Race PDF

During this final quantity of his four-volume set of memoirs, the well-known Russian spacecraft dressmaker Boris Chertok, who labored less than the mythical Sergey Korolev, maintains his interesting narrative at the heritage of the Soviet area application, this time protecting 1968 to 1974, the height years of the Soviet human lunar application.

Additional resources for Aerodynamics of Low Reynolds Number Flyers

Sample text

L. T. o. B. L. T. 1. Low-speed aerodynamic tests reported by Brown for two airfoils (Brown, 1939). 7 cm and the free-stream velocity was 94 cm/sec. et al. 74 × 105 . Selig et al. , 1996a). In the following text, we discuss the various aerodynamics characteristics and fluid physics for Re between 100 and 106 . Our main interest is on issues related to a Reynolds number of 105 or lower. 2 illustrates the aerodynamic performances and shapes of several representative airfoils under a steady-state free stream.

Representative figures from Brown’s experiments (Brown, 1939) are included here for us to gain a historical perspective. Many papers have been published to improve our understanding, experimental database, and airfoil design guidance in the lower Reynolds number regime. For example, valuable insight has been offered by Liebeck (1992), Selig et al. (1995, 1996a, 1996b), and Hsiao et al. (1989). o. B. L. T. o. B. L. T. 1. Low-speed aerodynamic tests reported by Brown for two airfoils (Brown, 1939).

5. Lift-to-drag polars of the Eppler E374 at different chord Reynolds numbers: (a) lift-to-drag polars at different Reynolds numbers; (b) pressure coefficient distributions at different AoAs for Re = 60,100. Data are computed with XFOIL (Drela, 1989); (c) E374 airfoil. 3. 82◦ ), the separated flow quickly experiences transition; however, with a massive separation, the turbulent diffusion can no longer make the flow reattach, and the drag increases substantially with little changes in lift. 1 Laminar Separation and Transition to Turbulence 14:44 35 The previously described zigzag pattern of the lift–drag polar is a noticeable feature of low Reynolds number aerodynamics.

Download PDF sample

Aerodynamics of Low Reynolds Number Flyers by Wei Shyy, Yongsheng Lian, Jian Tang, Dragos Viieru, Hao Liu


by Richard
4.5

Rated 4.99 of 5 – based on 36 votes