Download or read book Calibration of Strain gage Installations in Aircraft Structures for the Measurement of Flight Loads written by T. H. Skopinski and published by . This book was released on 1953 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: A general method has been developed for calibrating strain-gage installations in aircraft structures, which permits the measurement in flight of the shear of lift, the bending moment, and the torque or pitching moment on the principle lifting or control surfaces. Although the stress in structural members may not be a simple function of the three loads of interest, a straightforward procedure is given for numerically combining the outputs of several bridges in such a way that the loads may be obtained. Extensions of the basic procedure by means of electrical combination of the strain-gage bridges are described which permit compromises between strain-gage installation time, availability of recording instruments, the data reduction time. The basic principles of strain-gage calibration procedures are illustrated by reference to the data for two aircraft structures of typical construction, one a straight and the other a swept horizontal stabilizer.

Download or read book Calibration of Strain gage Installations in Aircraft Structures for the Measurement of Flight Loads written by T.H. Skopinski and published by . This book was released on 1952 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Calibration of Strain gage Installations in Aircraft Structures for the Measurements of Flight Loads written by T H. Skopinski and published by . This book was released on 1953 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1954 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book On the Significance of the Supports when Calibrating Strain Gauge Installations for Measuring Loads on Aircraft written by D. A. Drane and published by . This book was released on 1966 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: When calibrating strain gauge installations for measuring flight loads in the way suggested by Skopinski and others, the strain distribution and hence the gauge responses resulting from the application of a load to part of the structure will be affected by the position of the supports on which the aircraft rests. It is, however, shown that if the aircraft is supported so that the reactions are statically determinate, the response of any strain gauge to a particular loading system is the integral of the products of the elemental loads imposed by that system and the gauge responses obtained from the ground test. In consequence, the theoretical linear combination of strain gauges which measures exactly the load sustained by the structure and which is based on data obtained from the ground test is invariant with changes in the positions of the supports and thus may be used to measure loads applied in flight or in any other condition. In practice, the positions of the supports should be chosen with due regard for the strength and stability characteristics of the structure and for the idiosyncracies of the strain gauge responses. (Author).

Download or read book Technical Note National Advisory Committee for Aeronautics written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1958 with total page 1076 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Strain Gage Loads Calibration Testing of the Active Aeroelastic Wing F a 18 Aircraft written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-20 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes strain-gage calibration loading through the application of known loads of the Active Aeroelastic Wing F/A-18 airplane. The primary goal of this test is to produce a database suitable for deriving load equations for left and right wing root and fold shear; bending moment; torque; and all eight wing control-surface hinge moments. A secondary goal is to produce a database of wing deflections measured by string potentiometers and the onboard flight deflection measurement system. Another goal is to produce strain-gage data through both the laboratory data acquisition system and the onboard aircraft data system as a check of the aircraft system. Thirty-two hydraulic jacks have applied loads through whiffletrees to 104 tension-compression load pads bonded to the lower wing surfaces. The load pads covered approximately 60 percent of the lower wing surface. A series of 72 load cases has been performed, including single-point, double-point, and distributed load cases. Applied loads have reached 70 percent of the flight limit load. Maximum wingtip deflection has reached nearly 16 in. Lokos, William A. and Olney, Candida D. and Chen, Tony and Crawford, Natalie D. and Stauf, Rick and Reichenbach, Eric Y. and Bessette, Denis (Technical Monitor) Armstrong Flight Research Center NASA/TM-2002-210726, NAS 1.15:210726, H-2490

Download or read book Strain Gage Loads Calibration Testing of the Active Aeroelastic Wing F A 18 Aircraft written by and published by . This book was released on 2002 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes strain-gage calibration loading through the application of known loads of the Active Aeroelastic Wing F/A-18 airplane. The primary goal of this test is to produce a database suitable for deriving load equations for left and right wing root and fold shear; bending moment; torque; and all eight wing control-surface hinge moments. A secondary goal is to produce a database of wing deflections mesured by string potentiometers and the onboard flight deflection measurement system. Another goal is to produce strain-gage data through both the laboratory data acquisition system and the onboard aircraft data system as a check of the aircraft system. Thirty-two hydraulic jacks have applied loads through whiffletrees to 104 tension-compression load pads bonded to the lower wing surfaces. The load pads covered approximately 60 percent of the lower wing surface.

Download or read book Annual Report National Advisory Committee for Aeronautics written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1955 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes the Committee's Technical reports no. 1-1058, reprinted in v. 1-37.

Download or read book U S Government Research Reports written by and published by . This book was released on 1955 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ICAF 2011 Structural Integrity Influence of Efficiency and Green Imperatives written by Jerzy Komorowski and published by Springer Science & Business Media. This book was released on 2011-05-06 with total page 950 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the 26th Symposium of the International Committee on Aeronautical Fatigue are a widely referenced summary of advances in aeronautical design against fatigue. This is a bi-annual event and the proceedings have been published in book form for over 35 years.

Download or read book A Theoretical Investigation of the Aerodynamics of Wing tail Combinations Performing Time dependent Motions at Supersonic Speeds written by John C. Martin and published by . This book was released on 1954 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: A theoretical investigation is presented of the contribution of horizontal tails to the lift and pitching moment due to angle of attack, a constant rate of pitch, and a constant vertical acceleration. Numerical values of the aerodynamic coefficients associated with these motions are presented for a number of two-dimensional wing-tail combinations, a triangular wing-tail combination, and a number of rectangular-wing - triangular-tail combinations.

Download or read book NASA Technical Note written by and published by . This book was released on 1976 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Abstracts written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1951 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Strain gage Bridge Calibration and Flight Loads Measurements on a Low aspect ratio Thin Wing written by Ellwood L. Peele and published by . This book was released on 1975 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of the Accuracy of a Flight heating Simulation and Its Effect on Load Measurement written by Roger A. Fields and published by . This book was released on 1970 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Index of NACA Technical Publications written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1956 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: