Last edited by Tojashakar
Thursday, August 6, 2020 | History

3 edition of Flutter clearance of the F-14A variable-sweep transition flight experiment airplane found in the catalog.

Flutter clearance of the F-14A variable-sweep transition flight experiment airplane

Flutter clearance of the F-14A variable-sweep transition flight experiment airplane

phase 2

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Published by National Aeronautics and Space Administration, Ames Research Center, Dryden Flight Research Facility, For sale by the National Technical Information Service] in Edwards, Calif, [Springfield, VA .
Written in English

    Subjects:
  • Flutter (Aerodynamics),
  • F-14 aircraft.,
  • Flight tests.,
  • Flutter.,
  • Laminar flow.,
  • Variable sweep wings.

  • Edition Notes

    StatementLawrence C. Freudinger and Michael W. Kehoe.
    SeriesNASA technical memorandum -- 101717.
    ContributionsKehoe, M. W., Dryden Flight Research Facility.
    The Physical Object
    FormatMicroform
    Paginationiii, 39 p.
    Number of Pages39
    ID Numbers
    Open LibraryOL16131098M

    F Tomcat Testing. On Decem , the first aircraft crashed during its second flight. The hydraulic failure which caused the first F crash, was a freak accident and-was quickly remedied. Winglets reduce wing-induced drag but may reduce flutter speed, requiring wing stiffening and a structural weight penalty. Whereas the number of successful aircraft with winglets suggests that many flutter studies have been done, few of these studies appear in the archival literature.

      Flutter Testing Checked Off. Hard-Earned Wisdom: Float Flying a Legendary Bush Plane - DHC-2 Beaver - Flight VLOG - Duration: FlightChops Recommended for you. necessary for the clearance of prototype aircraft. At the present time, in view of the practical difficulty of installing the necessary equipment and conducting comprehensive Flight Flutter Tests on all prototypes, ow policy is to ask for a oomprehensiw [email protected] Flutter Testing ptv&ramme.

    flutter tests were also conducted. These tests show that there is no large flutter speed reduction at the transonic dip or undesirable flutter characteristics for the over-the-wing engine mount configuration. Analysis ERIN-Code To study the flutter characteristics of the over-the-wing engine mount configuration, the ERIN Code was used. certain airplanes (see paragraph 3) for simplicity. (2) However, it is not recommended to use ONLY the rigidity and mass balance criteria (§ (d)) prior to flight flutter tests. Unless a rational analysis is accomplished, the critical mode is unknown, and this mode must be excited during flight flutter tests.


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Flutter clearance of the F-14A variable-sweep transition flight experiment airplane Download PDF EPUB FB2

An FA aircraft was modified for use as the test-bed aircraft for the variable-sweep transition flight experiment (VSTFE) program. The VSTFE program was a laminar flow research program designed to measure the effects of wing sweep on laminar flow.

The airplane was modified by adding an upper surface foam and fiberglass glove to the right wing. Get this from a library. Flutter clearance of the FA variable-sweep transition flight experiment airplane: phase 2.

[Lawrence C Freudinger; M W Kehoe; Dryden Flight Research Facility.]. Flutter Clearance of the FA Variable-Sweep Transition Flight Experime nt Airplane Phase 2 Author: Lawrence C. Freudinger and Michael W. Kehoe Subject: H Keywords: Flutter, Ground vibration test, Laminar flow wing, Modal analysis Created Date: 1/12/ PM.

Get this from a library. Flutter clearance of the F variable-sweep transition flight experiment airplane, phase I. [Michael W Kehoe; Dryden Flight Research Facility.]. Flutter Clearance of the FA Variable-Sweep Transition Flight Experiment Airplane, Phase 2. By Michael W. Kehoe and Lawrence C.

Freudinger. Abstract. An FA aircraft was modified for use as the test-bed aircraft for the variable-sweep transition flight experiment (VSTFE) program. The VSTFE program was a laminar flow research program Author: Michael W.

Kehoe and Lawrence C. Freudinger. Flutter Clearance of the F=14 Variable-Sweep Transition Flight Experiment Airplane - Phase I Michael W. Kehoe Ames Research Center, Dryden Flight Research Facility, Edwards, California c NASA National Aeronautics and Space Administration he8 Research Center Oryden Flight Research Facility Edwards, California An FA aircraft was modified for use as the test-bed aircraft for the variable-sweep transition flight experiment (VSTFE) program.

The VSTFE program was a. Flutter Clearance of the FA Variable-Sweep Transition Flight Experiment Airplane, Phase 2. Article. Aug ; Flutter clearance of the F high-angle-of-attack research vehicle with. Flutter. Plan: 1.

Concept by flutter. Bending-torsion flutter of a wing 3. Concept about a method of definition of critical speed of a flutter. The influence of some parameters on critical speed of bending-torsion flutter. Concept by flutter. The flutter can be defined as a dynamical instability of a structure in airflow.

Flutter. The objectives of this paper are the study and the implementation of both aerodynamic and propulsion models, as linear interpolations using look-up tables in a database. The aerodynamic and propuls. Flutter Clearance of the FA Variable-Sweep Transition Flight Experiment Airplane, Phase 2 An FA aircraft was modified for use as the test-bed aircraft for the variable-sweep transition.

Flutter is an unstable oscillation which can lead to destruction. Flutter can occur on fixed surfaces, such as the wing or the stabilizer, as well as on control surfaces such as the aileron or the elevator for instance.

On the following video, you will see how flutter is affecting the stabilizer of a small airplane. Flutter Clearance of the F Variable-Sweep Transition Flight Experimen t Airplane-Phase 1 Author: Michael W.

Kehoe Subject: NASA TM Keywords: Flutter, Ground vibration test, Modal Analysis Created Date: 9/5/ PM. Creates an opacity transition. const. Properties alwaysIncludeSemantics → bool Whether the semantic information of the children is always included.

final. child → Widget The widget below this widget in the tree. final, inherited. hashCode → int Flutter Flight flutter tests must be performed to demonstrate the accuracy of the analysis and prove the airplane is safe to operate. Flutter is critically dependent upon airspeed because the dynamic pressure in the airstream provides the energy for the self-feeding oscillations.

NASA-TM Flutter clearance to the FA Variable-Sweep Transition Flight Expirement Airplane - Phase 2 Lawrence C. Freudinger and Michael W. Kehoe July ; N89 - APPLIED TRANSONICS AT GRUMMAN W.

Davis; FA Aerodata plots FA Aerodata plots from AFWAL-TR These are in the TR; and don't reflect the JSBSim model as. Like KCA airplane, pretest flutter analyses using a linear theory of small disturbance were made for the wingletted configuration.

Nevertheless, the flight testing was terminated at an evidently smaller speed, rather than the target value (calculated flutter speed) for a Mach number of Modeling Body Freedom Flutter is Easy.

When conducting flutter analysis on a wing, it is common to simply constrain the root of the wing to be fixed. When conducting a flutter analysis on a full aircraft however, it is very important to consider how the dynamics of the rigid body motion can also couple with the structural and aerodynamics of.

NASA-TM Flutter clearance to the FA Variable-Sweep Transition Flight Expirement Airplane - Phase 2 Lawrence C. Freudinger and Michael W. Kehoe July ; N89 - APPLIED TRANSONICS AT GRUMMAN W. Davis; F Aerodynamic data sources.

These are the data sources / references for F for FlightGear. The FDM is based on the. FLIGHT FLUTTER CLEARANCE The production N22 aircraft has been cleared by calculation and by flight testing up to speeds of KIAS.

At the time of the accident, the N had been granted a The plane kept climbing away and appeared quite normal for about another minute. Then the plane started to turn to the left, towards the south. Planning, instrumentation and execution of your Ground Vibration Test and Flight Flutter Tests?

experts in aeronautical engineering knowledgeable in airworthiness requirements regarding freedom of flutter; experts and partner companies capable of preparing, conducting and reporting your Ground Vibration test.The aviation world has been all aflutter about Boeing completing a critical part of the Dreamliner testing program — the all-important flutter tests.

They went off without a hitch and the. PA Twin Commanche Tail Flutter Test. NASA