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  • 1
    Electronic Resource
    Electronic Resource
    Nocturnal actions and interactions of new-born monkeys
    Amsterdam : Elsevier
    Journal of Human Evolution 11 (1982), S. 383-384,IN1,385-389 
    Details
    ISSN: 0047-2484
    Keywords: monkey infants ; nocturnal behavior ; short cycle periodicity of behavior ; ultradianperiodicity
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0047-2484(82)80093-6
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Nocturnal actions and interactions of new-born monkeys
    Amsterdam : Elsevier
    Journal of Human Evolution 11 (1982), S. 383-384,IN1,385-389 
    Details
    ISSN: 0047-2484
    Keywords: monkey infants ; nocturnal behavior ; short cycle periodicity of behavior ; ultradianperiodicity
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0047-2484(82)80093-6
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    Paper (German National Licenses)
    Fulltext
  • 3
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    Study of the application of advanced technologies to long-range transport aircraft. Volume 2: Research and development requirements (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Investigations were conducted to evaluate the relative benefits attainable through the exploitation of advanced technologies and to identify future research and development efforts required to permit the application of selected technologies to transport aircraft entering commercial operation in 1985. Results show that technology advances, particularly in the areas of composite materials, supercritical aerodynamics, and active control systems, will permit the development of long-range, high-payload commercial transports operating at high-subsonic speeds with direct operating costs lower than those of current aircraft. These advanced transports also achieve lower noise levels and lower engine pollutant emissions than current transports. Research and development efforts, including analytical investigations, laboratory test programs, and flight test programs, are required in essentially all technology areas to achieve the potential technology benefits.
    Keywords: AIRCRAFT
    Type: NASA-CR-112089
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Feasibility study of the transonic biplane concept for transport aircraft application (1974)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Investigations were conducted to evaluate the feasibility of a transonic biplane consisting of a forward-mounted swept-back lower wing, a rear-mounted swept-forward upper wing, and a vertical fin connecting the wings at their tips. This wing arrangement results in significant reductions in induced drag relative to a monoplane designed with the same span, and it allows for a constant-section fuselage shape while closely matching an ideal area distribution curve for M = 0.95 cruise. However, no significant reductions in ramp weight were achieved for the biplane relative to a monoplane with the same mission capability. Flutter analyses of the biplane revealed both symmetric and antisymmetric instabilities that occur well below the required flutter speed. Further studies will be required to determine if acceptable flutter speeds can be achieved through the elimination of the instabilities by passive means or by active controls. Configurations designed for other missions, especially those with lower Mach numbers and lower dynamic pressures, should be examined since the geometries suitable for those design constraints might avoid the weight penalties and flutter instabilities which prevent exploitation of induced drag benefits for the configuration studied.
    Keywords: AIRCRAFT
    Type: NASA-CR-132462 , LG74ER0077
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Parametric analysis of ATT configurations. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: This paper describes the results of a Lockheed parametric analysis of the performance, environmental factors, and economics of an advanced commercial transport envisioned for operation in the post-1985 time period. The design parameters investigated include cruise speeds from Mach 0.85 to Mach 1.0, passenger capacities from 200 to 500, ranges of 2800 to 5500 nautical miles, and noise level criteria. NASA high performance configurations and alternate configurations are operated over domestic and international route structures. Indirect and direct costs and return on investment are determined for approximately 40 candidate aircraft configurations. The candidate configurations are input to an aircraft sizing and performance program which includes a subroutine for noise criteria. Comparisons are made between preferred configurations on the basis of maximum return on investment as a function of payload, range, and design cruise speed.
    Keywords: AIRCRAFT
    Type: AIAA PAPER 72-757 , American Institute of Aeronautics and Astronautics, Aircraft Design, Flight Test, and Operations Meeting; Aug 07, 1972 - Aug 09, 1972; Los Angeles, CA
    Format: text
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    NASA TECHNICAL REPORTS
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