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Friday, May 15, 2020 | History

3 edition of Effects of spoiler surfaces on the aeroelastic behavior of a low-spect-ratio rectangular wing found in the catalog.

Effects of spoiler surfaces on the aeroelastic behavior of a low-spect-ratio rectangular wing

Effects of spoiler surfaces on the aeroelastic behavior of a low-spect-ratio rectangular wing

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Published by National Aeronautics and Space Administration, Langley Research Center, National Technical Information Service, distributor in Hampton, Va, [Springfield, Va .
Written in English

    Subjects:
  • Aeroelasticity.,
  • Flutter (Aerodynamics)

  • Edition Notes

    StatementStanley R. Cole.
    SeriesNASA technical memorandum -- 102622.
    ContributionsLangley Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15396381M

    The aeroelastic behavior of a low aspect ratio wing, representative of a fin or control surface on a generic hypersonic vehicle, is examined using third order piston theory, Euler and Navier-Stokes aerodynamics. The sensitivity of the aeroelastic behavior generated using Euler and Navier-Stokes aerodynamics to parametersCited by: Stodieck et al. [92,93] studied the aeroelastic behavior of rectangular composite wing. Tow-steered composites were used to tailor the aeroelastic behavior, and they showed a good performance over traditional unidirectional composite laminates. The identical conclusion to the above was formulated later in References [92,93,94,95,96,97,98,99,,Author: Aleksander Muc, Justyna Flis, Marcin Augustyn.

    AIRCRAFT AEROELASTIC (dynamics) of aerodynamic and hydrodynamic lifting surfaces. The term aeroelasticity was coined in the early ’s by Alfred Pugsley and Harold Roxbee Cox, two engineers at the British Royal Aircraft Establishment (RAE) whose created a new aeroelastic effect, later called wing divergence. Wing Thickness • Wing weight is strongly affected by thickness, particularly for cantilever wings. – Thicker is lighter • Supersonic wave drag is a strong function of t/c • Variation of parasite drag with wing t/c is small at subsonic, subcritical speeds. – Drag is primarily skin friction – Large drag increase if wing File Size: 1MB.

    Aeroelastic effects impact the structural dynamic behavior of vertical axis wind turbines (VAWTs) in two major ways. First, the stability phenomena of flutter and divergence are direct results of the aeroelasticity of the structure. Secondly, aerodynamic damping can be important for predicting response levels, particularly. The aeroelastic and aerothermoelastic behavior of three-dimensional configurations in the hypersonic flow regime are studied. The aeroelastic behavior of a low aspect ratio wing, representative of a fin or control surface on a generic hypersonic vehicle, is examined using third order piston theory, Euler and Navier-Stokes aerodynamics.


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Effects of spoiler surfaces on the aeroelastic behavior of a low-spect-ratio rectangular wing Download PDF EPUB FB2

The spoiler surfaces on the wing showed little effect on flutter. Flutter analysis was conducted for the basic configuration (clean wing with all spoiler surface mass properties included).

The analysis correlated well with the clean wing experimental flutter results. _a_maaglalJlg¢ wing chord, ft Young's modulus of elasticity, lb/ft 2 hs M q Sh Sw V w x rl pFile Size: KB. The spoiler surface is composed of thin, rectangular aluminum plates that are vertically mounted to the wing surface.

The effects of changes in spoiler geometry and location on wing flutter are Author: Stanley R. Cole. Aeroelastic effects of spoiler surfaces on a low-aspect-ratio rectangular wing. Stanley R. Cole ; Stanley R. Cole. NASA Langley Research Center, Hampton, Virginia Search for.

The spoiler surfaces consisted of thin, rectangular aluminum plates that were vertically mounted to the wing surface. The spoiler surface geometry and location on the wing surface were varied to determine the effects of these parameters on the classical flutter of the wing : Stanley R.

Cole. Effects of spoiler surfaces on the aeroelastic behavior of a low-spect-ratio rectangular wing. Effects of spoiler surfaces on the aeroelastic behavior of a low-aspect-ratio rectangular wing: Author(eng) Cole, Stanley R.

Author Affiliation(eng) NASA Langley Research Center: Issue Date: Language: eng: Description: The relationship between spoiler surfaces and flutter for a low-aspect ratio, rectangular wing is examined.

The item Effects of spoiler surfaces on the aeroelastic behavior of a low-spect-ratio rectangular wing, Stanley R. Cole, (microform) represents a specific, individual, material embodiment of a distinct intellectual or artistic creation found in Indiana State Library. The spoiler surface geometry and location on the wing surface were varied to determine the effects of these parameters on the classical flutter of the wing model.

Subsonically, the experiment showed that spoiler surfaces increased the flutter dynamic pressure with each successive increase in spoiler height or width. The spoiler surface is composed of thin, rectangular aluminum plates that are vertically mounted to the wing surface.

The effects of changes in spoiler geometry and location on wing flutter Author: Stanley R. Cole. The relationship between spoiler surfaces and flutter for a low-aspect ratio, rectangular wing is examined. The model design is a rigid wing mounted to the wing tunnel wall using a flexible, rectangular beam.

The spoiler surface is composed of thin, rectangular aluminum plates that are vertically mounted to the wing : Stanley R. Cole. 36 Cole, Stanley R.: Effects of Spoiler Surfaces on the Aeroelastic Behavior of a Low-Aspect-Ratio Rectangular Wing.

Proceedings of AIAA/ASME/ASCE/AHS/ASC 31th Structures, Structural Dynamics and Materials Conference, Long Beach, California.

Cole, S.R., “Effects of Spoiler Surfaces on the Aeroelastic Behavior of a Low-Aspect Ratio Wing,” 31st AIAA Structures, Structural Dynamics and Materials Conference, AIAA Paperpp. –, Google Scholar. We again apply strip theory to investigate the aeroelastic effects of aileron deflection on a finite wing.

In Fig. (a), the deflection of the aileron through an angle ξ produces a rolling velocity p rad/s, having the sense shown.

The wing incidence at any section z is thus reduced due to p by an amount pz/ downward aileron deflection shown here coincides with an upward deflection on. Control surfaces on an aircraft wing deflect downward toward the high-pressure surface in order to increase lift during takeoff and landing, whereas on a wind turbine blade the flaps deflect toward the low-pressure surface (i.e., downwind side) to reduce lift and cause a braking effect.

nonlinear aeroelastic behavior. In this work, a reference regional aircraft wing structural layout is designed to ensure structural integrity for a load limit of g's.

A scaled model that represents well the aeroelastic behavior is required for wind tunnel testing to evaluate the nonlinear behavior that can occur in high aspectFile Size: 2MB.

American Institute of Aeronautics and Astronautics Sunrise Valley Drive, Suite Reston, VA Aeroelastic Concepts for Flexible Wing Structures 9 Introduction Aeroelasticity concerns the interaction of exible structures with the sur-rounding airow.

Since aircraft structures are particularly exible due to weight restrictions, aeroelasticity is commonly addressed by aeronau-tical engineers. As an aircraft moves through the air, loads. aeroelasticity[‚erōi‚las′tisədē] (mechanics) The deformation of structurally elastic bodies in response to aerodynamic loads.

Aeroelasticity The branch of applied mechanics which deals with the interaction of aerodynamic, inertial, and structural forces. It is important in the design of airplanes, helicopters, missiles, suspension. Much of the aeroelasticity has been developed with applications formerly in mind because of its enormous consequences for the safety of aircraft.

Aeroelastic instabilities such as divergence and flutter and aeroelastic responses to gusts can pose a significant hazard to. A perspective of the mechanisms by which energy is transferred from high- to low-frequency modes is presented. The focus is on some recent experiments that reveal how a low-amplitude high-frequency excitation can produce a large-amplitude low-frequency by:.

nonlinear aeroelastic behavior. In this work, a reference regional aircraft wing structural layout is designed to ensure structural integrity for a load limit of g's.

A scaled model that represents well the aeroelastic behavior is required for wind tunnel testing to evaluate the nonlinear behavior that can occur in high aspect ratio wings.An experimental research study to determine the effectiveness of spoiler surfaces in suppressing flutter onset for a low-aspect-ratio, rectangular wing was conducted in the Langley Transonic Dynamics Tunnel (TDT).

The wing model used in this flutter test consisted of a rigid wing mounted to the wind-tunnel wall by a flexible, rectangular beam.Energy harvesting from aeroelastic response tends to have a wide application prospect, especially for small-scale unmanned aerial vehicles.

Gusts encountered in flight can be treated as a potential source for sustainable energy supply. The plate model is more likely to describe a low aspect ratio, thin plate wing .