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Monday, April 27, 2020 | History

3 edition of Langley rotorcraft structural dynamics program found in the catalog.

Langley rotorcraft structural dynamics program

Langley rotorcraft structural dynamics program

background, status, accomplishments, plans

by

  • 142 Want to read
  • 14 Currently reading

Published by National Aeronautics and Space Administration, Langley Research Center in Hampton, Va .
Written in English

    Subjects:
  • Structural dynamics.,
  • Rotors (Helicopters)

  • Edition Notes

    StatementRaymond G. Kvaternik.
    SeriesNASA technical memorandum -- 101618.
    ContributionsLangley Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15278783M

    RESEARCH AND APPLICATIONS IN AEROELASTICITY AND STRUCTURAL DYNAMICS AT THE NASA LANGLEY RESEARCH CENTER Irving Abel Structures Division NASA Langley Research Center MS Hampton, Virginia USA e-mail address: @ ABSTRACT An overview of recently completed programs in aeroelasticity and structural dynamics research at the. Dr. Tischler’s efforts and ground-breaking accomplishments in rotorcraft system identification, flight control, handling qualities and simulation have had a significant impact on how modern rotorcraft flight control systems are designed and developed, how handling qualities requirements are characterized, specified and evaluated, and how aircraft flight test and simulations are conducted.


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Langley rotorcraft structural dynamics program Download PDF EPUB FB2

Get this from a library. Langley rotorcraft structural dynamics program: background, status, accomplishments, plans. [Raymond G Kvaternik; Langley Research Center.]. NASA-Langley is sponsoring a rotorcraft structural dynamics program with the objective to establish in the U.S.

a superior capability to utilize finite element analysis models for calculations to support industrial design of helicopter airframe structures. element dynamic analyses.

A rotorcraft structural dynamics program aimed at meeting the industry's long-term needs in this key technical area was implemented at Langley in The subject program is a cooperative effort involving NASA, the Army, academia, and the helicopter industry in a series of generic research.

A NASA/industry rotorcraft structural dynamics program known as DAMVIBS was initiated at Langley rotorcraft structural dynamics program book Research Center in with the objective of establishing the technology base needed Langley rotorcraft structural dynamics program book the industry for developing an advanced finite-element-based vibrations design analysis capability for airframe Size: 1MB.

This paper presents an informal narrative of rotorcraft structural dynamics and aeroelasticity research initiated by the U.S. Army at NASA Ames Research Center in the early s, when rotorcraft.

Under a rotorcraft structural dynamics program sponsored by the NASA Langley Research Center, Sikorsky Aircraft, together with the other major helicopter airframe manufacturers, is engaged in a study to improve the use of finite element analysis to predict the dynamic behavior of helicopter airframes.

The Aircraft Morphing program’ at the NASA Langley Research Center is a new 6-year program to develop smart devices for airframe applications to enable self-adaptive flight for a revolutionary improvement in efficiency and safety.

In this context, aCited by: Structural Dynamics Branch, Structures and Materials Competency NASA Langley Research Center Hampton, VA ABSTRACT This paper summarizes /2 decades of full-scale aircraft and rotorcraft crash testing performed at the Impact Dynamics Research Facility (IDRF) located at NASA Langley Research Center in Hampton, Size: KB.

The 1 st edition of Aircraft Dynamics: from Modeling to Simulation by Marcello R. Napolitano is an innovative textbook with Langley rotorcraft structural dynamics program book features for assisting, motivating and engaging aeronautical/aerospace engineering students in the challenging task of understanding the basic principles of aircraft dynamics and the necessary skills for the modeling of the aerodynamic and thrust forces and moments/5(11).

Review of dynamic inflow modeling for rotorcraft flight dynamics. Review of Recent Rotorcraft Experimental Investigations in the Langley Transonic Dynamics Tunnel. 44th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference June Feasibility of a rotor flight-dynamics model with first-order cyclic inflow.

Reducing the theoretical methods of flight control to design practice, Practical Methods for Aircraft and Rotorcraft Flight Control Design: An Optimization-Based Approach compiles the authors extensive experience and lessons learned into a single comprehensive resource for both academics and Langley rotorcraft structural dynamics program book flight control engineers.

Concepts Discussed Cited by: 3. A NASA Langley-sponsored rotorcraft structural dynamics program known as DAMVIBS (Design Analysis Methods for VIBrationS) with the objective of establishing the technology base needed by the industry for developing an advanced finite-clement-based dynamics design analysis capability for vibrations has been underway since Under the program, teams.

The objective of this coupling is to introduce 3D finite element based structural dynamics models in rotorcraft aeromechanics analysis.

A Langley rotorcraft structural dynamics program book coupling procedure has been adopted, where. The Langley Rotorcraft Structural Dynamics Program was instituted in to Langley rotorcraft structural dynamics program book long term industry needs in the area of rotorcraft vibration prediction.

As a part of the Langley program, this research endeavors to develop an efficient means of coupling the rotor to the airframe for preliminary design analysis of helicopter airframe : Kip P. Nygren. Eigenstructure control involves modification of both the eigenvalues and eigenvectors of a system using feedback.

Based on this key concept, algorithms are derived for the design of control systems using controller structures such as state feedback, output feedback, observer-based dynamic feedback, implicit and explicit modelfollowing, by: 1.

American Institute of Aeronautics and Astronautics Sunrise Valley Drive, Suite Reston, VA Structures, Structural Dynamics, and Materials and Co-located Conferences Home; No Access.

Review of Recent Rotorcraft Experimental Investigations in the Langley Transonic Dynamics Tunnel. An overview of smart structures research currently underway a the NASA Langley Research Center in the areas of aeroservoelasticity and structural dynamics is presented.

Analytical and experimental results, plans, potential technology pay-offs, and challenges are by:   The primary laboratories for the aeroelasticity branch are the NASA Langley Transonic Dynamics Tunnel (TDT) and the Rotorcraft Hover Test Facility.

With the use of these facilities and computational methods, many aerospace problems have been addressed by the branch to include. An Assessment of the Future Roles of the National Transonic Facility and the Langley Transonic Dynamics Tunnel in Aeroelastic and Unsteady Aerodynamic Testing.

NASA TM54 Smith, Jacqueline G.; and Gardner, James E: Structural Dynamics Division Research and Technology Accomplishments for FY and Plans for FY Abstract.

NASA-Langley is sponsoring a rotorcraft structural dynamics program with the objective to establish in the U.S. a superior capability to utilize finite element analysis models for calculations to support industrial design of helicopter airframe : W.

Twomey and R. Sopher. Abstract. A NASA/industry rotorcraft structural dynamics program known as Design Analysis Methods for VIBrationS (DAMVIBS) was initiated at Langley Research Center in with the objective of establishing the technology base needed by the industry for developing an advanced finite-element-based vibrations design analysis capability for airframe : Raymond G.

Kvaternik and T. Sreekanta Murthy. [1] Ormiston R. A., “ Rotorcraft Research—The s and a New Frontier in Structural Dynamics and Aeroelasticity,” AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, AIAA PaperJan. Link Google Scholar [2] Prouty R. and Yackle A.

R., “ The Lockheed AH Cheyenne—Lessons Learned,” Guidance, Navigation and Control Conference, AIAA Paper Author: Robert A. Ormiston, David A.

Peters. from Stanford University. His research interests include aeroelasticity, structural me-chanics, rotorcraft dynamics, nite element analysis, and computational optimal con-trol. He has authored or coauthored v e books and more than technical papers in refereed journals.

Professor Hodges is a Fellow of the American Helicopter Society, theFile Size: KB. A NASA Langley-sponsored rotorcraft structural dynamics program, known as Design Analysis Methods for VIBrationS (DAMVIBS), has been under development since The objective of this program was to establish the technology base needed by the industry to develop an advanced finite-element-based dynamics design analysis capability for : Raymond G.

Kvaternik. Presenting proven methods, practical guidelines, and real-world flight-test results for a wide range of state-of-the-art flight vehicles, "Aircraft and Rotorcraft System Identification, Second Edition" addresses the entire process of aircraft and rotorcraft system identification from instrumentation and flight testing to model determination, validation, and application of the by: This paper summarizes /2 decades of full-scale aircraft and rotorcraft crash testing performed at the Impact Dynamics Research Facility (IDRF) located at NASA Langley Research Center in Hampton.

A review of recent rotorcraft investigations conducted in the NASA Langley Transonic Dynamics Tunnel (TDT) is presented. The paper begins with a brief description of the TDT and the rotorcraft. structure. The beam structural properties were then employed to develop the structural model of the rotor blades in the second generation version of the Comprehensive Analytical Model of Rotorcraft Aerodynamics and Dynamics (CAM-RAD II) computer code (Ref).

To improve the aerody-namic modeling of this comprehensive analysis, CAMRAD. The Langley Low Turbulence Pressure Tunnel and the 6-byInch Transonic Tunnel were used to develop rotorcraft airfoil series.

Research with the Helicopter Test Tower explored rotor stall. The Langley Transonic Dynamics Tunnel has provided understanding of aeroelasticity and vibratory loads. Work in the Langley V/STOL Tunnel, now.

Rotorcraft Engineering. The University is engaged in a wide range of research and educational activities related to vertical flight technology.

Inled by faculty in the aerospace engineering department, a Penn State team was competitively awarded one of the three Rotorcraft Centers of Excellence (RCOE) by the newly formed National Rotorcraft Technology Center (NRTC).

'Dynamics: Theory and Application of Kane's Method is a timely update of the now classical book by Kane and Levinson by two authors, collectively with many decades of experience stretching across academia and government by: 6. Summaries. These summaries are written by past students and provide an overview of all topics covered in the course.

A Guide to Help You Solve Dynamics Problems by Hildo Bijl - clicks Bristol Dynamics Reader Part 1 (0. Oct ) - clicks Summary: Formulas and Example Questions by Dennis Wehmeyer ( Apr ) - clicks Bristol Dynamics Reader Part 3 (0. American Institute of Aeronautics and Astronautics Sunrise Valley Drive, Suite Reston, VA The Langley Low Turbulence Pressure Tunnel and the 6-byInch Transonic Tunnel were used to develop rotorcraft airfoil series.

Research with the Helicopter Test Tower explored rotor stall. The Langley Transonic Dynamics Tunnel has provided understanding of aeroelasticity and vibratory loads. An overview of smart structures research currently underway a the NASA Langley Research Center in the areas of aeroservoelasticity and structural dynamics is presented.

Analytical and experimental results, plans, potential technology pay-offs, and challenges are discussed. The goal of this research is to develop the enabling technologies to actively and passively control aircraft and.

“An Introduction to GRASP-General Rotorcraft Aeromechanical Stability Program -A Modern Approach to Rotorcraft Modeling,” University of California at Los Angeles, Mar.

13, “Stability of Elastically Tailored Rotor Systems,” U.S. Army Aerostructures Directorate, Langley. ROTORCRAFT STRUCTURAL DESIGN FOR CRASHWORTHINESS. During the past 4 decades, several research and development programs have been sponsored by the US Army AATD to encourage the use of advanced composite materials in rotorcraft structural design.

The first program was the ACAP [43–49]. The purpose of this program was to demonstrate the Author: Karen E. Jackson. At Langley, primary rotorcraft facilities include the byfoot Subsonic Tunnel, Transonic Dynamics Tunnel, Landing and Impact Research gantry (LandIR), acoustics test laboratories and the mobile acoustic flight test capability.

Full text of "NASA Technical Reports Server (NTRS) NASA/Army Rotorcraft 1: Aerodynamics, and Dynamics and Aeroelasticity" See other formats. He is a Boeing Designated Expert in the area of pdf aeromechanics methodology and its application to rotor dynamics, loads, vibration and stability; he is widely recognized for pioneering the development of methodology, implementing and applying multidisciplinary rotorcraft analysis tools to a variety of rotorcraft products, new hybrid.mathematical model of the kinematics, dynamics, and response allows nonlinearities (structural, aerodynamic, and kinematics); and arbitrary large motion, including rigid body motions and large rotations of components relative to each other.

Hence CAMRAD II can model the true geometry of a rotorcraft, including multiple load paths.Comprehensive multibody dynamics analysis for rotor aeromechanics predictions in descending flight Article in Aeronautical Journal -New Series- () March with Reads.