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  • Aircraft Design, Testing and Performance
  • 1990-1994
  • 1970-1974  (3)
  • 1950-1954
  • 1935-1939  (2)
  • 1972  (3)
  • 1935  (2)
Collection
Keywords
Years
  • 1990-1994
  • 1970-1974  (3)
  • 1950-1954
  • 1935-1939  (2)
Year
  • 1
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    The Effect of the Angle of Afterbody Keel on the Water Performance of a Flying-Boat Hull Model (1935)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: NACA model 11-C was tested according to the general method with the angle of afterbody keel set at five different angles from 2-1/2 degrees to 9 degrees, but without changing other features of the hull. The results of the tests are expressed in curves of test data and of non-dimensional coefficients. At the depth of step used in the tests, 3.3 percent beam, the smaller angles of afterbody keel give greater load-resistance ratios at the hump speed and smaller at high speed than the larger angles of afterbody keel. Comparisons are made of the load-resistance ratios at several other points in the speed range. The effect of variation of the angle of afterbody keel upon the take-off performance of a hypothetical flying boat of 15,000 pounds gross weight having a hull of model 11-C lines is calculated, and the calculations show that the craft with the largest of the angles of afterbody keel tested, 9 degrees, takes off in the least time and distance.
    Keywords: Aircraft Design, Testing and Performance
    Type: NACA-TN-541
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Operational Weight Estimations of Commercial Jet Transport Aircraft (1972)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: In evaluating current or proposed commercial transport airplanes, there has not been available a ready means to determine weights so as to compare airplanes within this particular class. This paper describes the development of and presents such comparative tools. The major design characteristics of current American jet transport airplanes were collected, and these data were correlated by means of regression analysis to develop weight relationships for these airplanes as functions of their operational requirements. The characteristics for 23 airplanes were assembled and examined in terms of the effects of the number of people carried, the cargo load, and the operating range. These airplane characteristics were correlated for the airplanes as one of three subclasses, namely the small, twin-engine jet transport, the conventional three- and four-engine jets, and the new wide-body jets.
    Keywords: Aircraft Design, Testing and Performance
    Type: NASA-TM-112771 , SAWE-Paper-946 , NAS 1.15:112771 , Annual Conference of the Society of Aeronautical Weight Engineers, Inc.; May 22, 1972 - May 25, 1972; Atlanta, GA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    The Effect of Lateral Inclination of the Thrust Axis and of Sweepback of the Leading Edge of the Wing on Propulsive and Net Efficiencies of a Wing-Nacelle-Propeller Combination (1935)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: This report describes and gives the results of tests made to determine the effect of lateral inclination of the propeller thrust axis to the direction of flight. A wing-nacelle-propeller combination with the nacelle axis located successively parallel to and at 15 degrees to the perpendicular to the leading edge of a wing was tested with the combination at several angles of yaw. Tests of the wing alone at the same angles of yaw were also made. The data are presented in the usual graphic form. An increase in propulsive efficiency with increase in angle of the thrust axis was found. The change in net efficiency, found by charging the whole nacelle drag to the power unit, was negligible, however, within the range of the tests.
    Keywords: Aircraft Design, Testing and Performance
    Type: NACA-SR-28
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Seventh Annual Conference on Manual Control (1972)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The Seventh Annual NASA/AF/University Conference on Manual Control was held at the University of Southern California from June 2-4, 1971. Some eighty specialists, including colleagues from Canada, Netherlands and West Germany, attended the Conference, which was organized by the authors of this Summary. Generally at this conference there was less emphasis on theory and more on applications than at some previous meetings. In addition to the well-established areas of human operator modeling and display systems, this conference devoted considerable time to the extensions of manual control theory to such diverse areas as automobile driving, air traffic control and industrial management. This interest in meaningful applications of the existing theoretical knowledge in man-machine systems is encouraging and timely.
    Keywords: Aircraft Design, Testing and Performance
    Type: NASA-SP-281 , E-DAA-HQ-TN66194 , Annual Conference on Manual Control; Jun 02, 1971 - Jun 04, 1971; Los Angeles, CA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Nonlinear Aerodynamics of Bodies in Coning Motion (1972)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: A numerical method for computing the nonlinear inviscid flowfield surrounding a body performing coning motion is described. The method permits accurate computation of the aerodynamic moment due to one of the four motions characterizing an arbitrary nonplanar motion. Results of computations for a slender circular cone in coning motion are presented, and show good agreement with experiment for angles of attack up to twice the cone half-angle. The computational results display significant departure of the side moment from the linear theory value with increasing angle of attack, but agree well with experimental measurements. This indicates that the initial nonlinear behavior of the aerodynamic moment is determined primarily by the inviscid flow.
    Keywords: Aircraft Design, Testing and Performance
    Type: NASA-TM-112778 , NAS 1.15:112778 , AIAA Paper 72-27 , AIAA Journal; 10; 11; 1517-1522|Aerospace Sciences; Jan 17, 1972 - Jan 19, 1972; San Diego, CA; United States
    Format: text
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    NASA TECHNICAL REPORTS
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