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Lift And Drag Characteristics Of Flexible Pitching And Heaving Wings
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Book Synopsis Lift and Drag Characteristics of Flexible Pitching and Heaving Wings by : Jesse Rushen
Download or read book Lift and Drag Characteristics of Flexible Pitching and Heaving Wings written by Jesse Rushen and published by . This book was released on 2014 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a pressing need for Micro Air Vehicles (MAV) that are light, powerful, and efficient to perform military reconnaissance missions and search and rescue operations. These MAVs have length scales on the order of 10 cm, where traditional steady flight wing designs perform poorly. An alternative flight mechanism is the unsteady flapping employed by birds, bees, and insects. This unsteady motion has been shown to be more effective in generating lift and reducing drag forces. Current research into unsteady flapping flight has been primarily focused on the translational heaving and rotational pitching motion of rigid wings. The purpose of this research is to investigate how the kinematics of flapping wings of variable trailing edge flexibility affect flight performance as measured by lift and drag. To investigate this a custom built motion apparatus was used to pitch and heave the wings over a range of conditions. The forces on these wings were measured with a pair of load cells attached to the base of the pitching and heaving device that capture the axial and normal loads on the wing. The effect of changing the non-dimensional heaving amplitude, non-dimensionalized by the chord length, was found by changing the amplitude of the translational heaving motion. Similarly, the pitching amplitude was tested over a range of conditions from non-pitching to pitching with an amplitude of 20 degrees. The central angle that the wing pitched about was advanced from -20 degrees to 20 degrees to explore the role of average angle in unsteady flapping flight. The frequency of the pitching and heaving motion was increased from 0.25 Hz to 0.625 Hz. The major findings from this research are that the Lift/Drag ratio increased with an increase in pitching amplitudes for all flexibilities. The moderately flexible wing performed best for all central angles, with the peak lift occurring when the central angle was at its maximum. The Lift/Drag ratio peaked for a central angle of zero, as the drag was at its minimum. Increasing the heaving amplitude caused slight decreases in lift and drag forces. The reduced frequency decreased the lift and the drag slightly. For all trials the effect of flexibility was small compared to the effect of kinematics.
Book Synopsis Effects of Flexibility on Lift and Pitching-moment Characteristics of a Series of Low-aspect-ratio Wing-body Combinations at Transonic Speeds by : Robert V. Doggett
Download or read book Effects of Flexibility on Lift and Pitching-moment Characteristics of a Series of Low-aspect-ratio Wing-body Combinations at Transonic Speeds written by Robert V. Doggett and published by . This book was released on 1968 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of Some Effects of Flexibility on the Lift and Pitching-moment Characteristics of a Series of Low-aspect- Ratio Wing-body Combinations at Transonic Speeds by :
Download or read book Investigation of Some Effects of Flexibility on the Lift and Pitching-moment Characteristics of a Series of Low-aspect- Ratio Wing-body Combinations at Transonic Speeds written by and published by . This book was released on 1960 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Introduction to Flapping Wing Aerodynamics by : Wei Shyy
Download or read book An Introduction to Flapping Wing Aerodynamics written by Wei Shyy and published by Cambridge University Press. This book was released on 2013-08-19 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an ideal book for graduate students and researchers interested in the aerodynamics, structural dynamics and flight dynamics of small birds, bats and insects, as well as of micro air vehicles (MAVs), which present some of the richest problems intersecting science and engineering. The agility and spectacular flight performance of natural flyers, thanks to their flexible, deformable wing structures, as well as to outstanding wing, tail and body coordination, is particularly significant. To design and build MAVs with performance comparable to natural flyers, it is essential that natural flyers' combined flexible structural dynamics and aerodynamics are adequately understood. The primary focus of this book is to address the recent developments in flapping wing aerodynamics. This book extends the work presented in Aerodynamics of Low Reynolds Number Flyers (Shyy et al. 2008).
Book Synopsis Lift, Pitching Moment, and Span Load Characteristics of Wings at Low Speed as Affected by Variations of Sweep and Aspect Ratio by : Edward J. Hopkins
Download or read book Lift, Pitching Moment, and Span Load Characteristics of Wings at Low Speed as Affected by Variations of Sweep and Aspect Ratio written by Edward J. Hopkins and published by . This book was released on 1951 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lift, pitching-moment, and pressure distribution were measured on a wing which was swept -40, -30, 0, 35, and 45 degrees. The wing span was decreased to give aspect ratios 6.8, 5.3, 4.2, 3.4, and 2.8. The effects of independent variations of sweep and aspect ratio on the lift, pitching-moment, and span-load characteristics of the wings are compared with the effects estimated by use of the Weissinger method.
Book Synopsis Static Lift, Drag, and Pitching-moment Characteristics of Wings with Arrow and Modified-diamond Plan Forms Combined with Several Different Bodies at Mach Numbers of 2.97, 3.35, and 3.71 [with List of References] by :
Download or read book Static Lift, Drag, and Pitching-moment Characteristics of Wings with Arrow and Modified-diamond Plan Forms Combined with Several Different Bodies at Mach Numbers of 2.97, 3.35, and 3.71 [with List of References] written by and published by . This book was released on 1959 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Prediction of Wing Aeroelastic Effects on Aircraft Lift and Pitching Moment Characteristics by :
Download or read book Prediction of Wing Aeroelastic Effects on Aircraft Lift and Pitching Moment Characteristics written by and published by . This book was released on 1986 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Static Lift, Drag, and Pitching-moment Characteristics of Wings with Arrow and Modified-diamond Plan Forms Combined with Several Different Bodies at Mach Numbers of 2.97, 3.35, and 3.71 by : Dennis F. Hasson
Download or read book Static Lift, Drag, and Pitching-moment Characteristics of Wings with Arrow and Modified-diamond Plan Forms Combined with Several Different Bodies at Mach Numbers of 2.97, 3.35, and 3.71 written by Dennis F. Hasson and published by . This book was released on 1959 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of Some Effects of Flexibility on the Lift and Pitching-moment Characteristics of a Series of Low-aspect- Ratio Wing-body Combinations at Transonic Speeds by : Robert V. Doggett
Download or read book Investigation of Some Effects of Flexibility on the Lift and Pitching-moment Characteristics of a Series of Low-aspect- Ratio Wing-body Combinations at Transonic Speeds written by Robert V. Doggett and published by . This book was released on 1960 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lift, Drag, and Pitching Moment of Low-aspect-ratio Wings at Subsonic and Supersonic Speeds - an Investigation at Large Reynolds Numbers of the Low-speed Characteristics of Several Wing-body Combinations by : Donald W. Smith
Download or read book Lift, Drag, and Pitching Moment of Low-aspect-ratio Wings at Subsonic and Supersonic Speeds - an Investigation at Large Reynolds Numbers of the Low-speed Characteristics of Several Wing-body Combinations written by Donald W. Smith and published by . This book was released on 1952 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lift-drag Ratios for Arrow Wings Alone and in Combination with a Body, Nacelles, and Vertical Tails at Mach Number 3 by : William A. Jr Hill
Download or read book Lift-drag Ratios for Arrow Wings Alone and in Combination with a Body, Nacelles, and Vertical Tails at Mach Number 3 written by William A. Jr Hill and published by . This book was released on 1960 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Moment-of-area-rule Modifications on Drag, Lift and Pitching-moment Characteristics of Unswept Aspect-ratio-6 Wing and Body Combination [with List of References] by :
Download or read book Effect of Moment-of-area-rule Modifications on Drag, Lift and Pitching-moment Characteristics of Unswept Aspect-ratio-6 Wing and Body Combination [with List of References] written by and published by . This book was released on 1959 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aerodynamic Characteristics in Pitch of Three Structurally Similar Flexible Wings with 45 Degree Sweep by : John W. Mckee
Download or read book Aerodynamic Characteristics in Pitch of Three Structurally Similar Flexible Wings with 45 Degree Sweep written by John W. Mckee and published by . This book was released on 1953 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aerodynamic Characteristics in Pitch of Three Structurally Similar Flexible Wings with 45 Degrees Sweep: a Sweptback Wing, a Wing with M Plan Form, and a Wing with W Plan Form by : John W. McKee
Download or read book Aerodynamic Characteristics in Pitch of Three Structurally Similar Flexible Wings with 45 Degrees Sweep: a Sweptback Wing, a Wing with M Plan Form, and a Wing with W Plan Form written by John W. McKee and published by . This book was released on 1954 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lift, Drag, and Pitching Moment of Low-aspect-ratio Wings at Subsonic and Supersonic Speeds - Plane Triangular Wing of Aspect Ratio 3 with NACA 0003-63 Section by : John C. Heitmeyer
Download or read book Lift, Drag, and Pitching Moment of Low-aspect-ratio Wings at Subsonic and Supersonic Speeds - Plane Triangular Wing of Aspect Ratio 3 with NACA 0003-63 Section written by John C. Heitmeyer and published by . This book was released on 1951 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: A wing-body combination having a plane triangular wing of aspect ratio 3 and NACA 0003-63 sections in streamwise planes has been investigated at both subsonic and supersonic Mach numbers. The lift, drag, and pitching moment of the model are presented for Mach numbers from 0.60 to 0.92 and from 1.20 to 1.70 at a Reynolds number of 4.80 million. The variations of the characteristics with Reynolds number are also shown for several Mach numbers.
Book Synopsis Effect of Taper Ratio on Lift, Drag, and Pitching-moment Characteristics of Thin Wings of Aspect Ratio 3 with 53.1 Degree Sweepback of Leading Edge at Subsonic and Supersonic Speeds by : Benton E. Wetzel
Download or read book Effect of Taper Ratio on Lift, Drag, and Pitching-moment Characteristics of Thin Wings of Aspect Ratio 3 with 53.1 Degree Sweepback of Leading Edge at Subsonic and Supersonic Speeds written by Benton E. Wetzel and published by . This book was released on 1955 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1972 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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