5,648 research outputs found

    Technology needs for high speed rotorcraft (3)

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    The spectrum of vertical takeoff and landing (VTOL) type aircraft is examined to determine which aircraft are most likely to achieve high subsonic cruise speeds and have hover qualities similar to a helicopter. Two civil mission profiles are considered: a 600-n.mi. mission for a 15- and a 30-passenger payload. Applying current technology, only the 15- and 30-passenger tiltfold aircraft are capable of attaining the 450-knot design goal. The two tiltfold aircraft at 450 knots and a 30-passenger tiltrotor at 375 knots were further developed for the Task II technology analysis. A program called High-Speed Total Envelope Proprotor (HI-STEP) is recommended to meet several of these issues based on the tiltrotor concept. A program called Tiltfold System (TFS) is recommended based on the tiltrotor concept. A task is identified to resolve the best design speed from productivity and demand considerations based on the technology that emerges from the recommended programs. HI-STEP's goals are to investigate propulsive efficiency, maneuver loads, and aeroelastic stability. Programs currently in progress that may meet the other technology needs include the Integrated High Performance Turbine Engine Technology (IHPTET) (NASA Lewis) and the Advanced Structural Concepts Program funded through NASA Langley

    ECONOMIC IMPACTS OF REGULATIONS TO PRESERVE NATIVE WOODLAND ON PRIVATE PROPERTY: A CASE STUDY IN THE HUNTER VALLEY OF NEW SOUTH WALES

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    Australian policies to preserve native vegetation on farms rest on mandatory regulations without compensation, whereas policies in most OECD countries rest on voluntary conservation with compensation. In New South Wales, the Native Vegetation Conservation Act 1998 restricts farmers from clearing native vegetation on their own freehold land, and offers no compensation. The Act may therefore impose opportunity costs, or losses in income, on landholders. These opportunity costs are estimated for a case study property in the Hunter Valley of New South Wales, and these results are then generalised to assess the broad trade-offs between development and preservation. The losses in income appear to vary between 5 and 10 per cent of annual income, depending on livestock prices. The flow of these losses over time appears to total some $26m for all properties of this kind in the immediate region. In addition to imposition of these direct opportunity costs, the regulations hinder land sales and so hinder adjustment by landholders to changing conditions.Native vegetation, environmental preservation, opportunity cost., Land Economics/Use,

    Federated Identity and Access Management for the Internet of Things

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    6th Annual Summer Bible Lectureship -- Christ FOR Our Contemporaries (1963)

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    Program booklet for the Sixth Annual Pepperdine Summer Lectureship, held at Pepperdine College in Los Angeles, California, August 3-8, 1963. The Pepperdine Bible Lectures is an annual event hosted by Pepperdine University featuring a wide variety of lectures and classes on topics and themes in the Bible and Christianity. Jack Scott, Lectureship Directorhttps://digitalcommons.pepperdine.edu/churches/1043/thumbnail.jp

    21st Annual Spring Bible Lectureship -- Declaring God\u27s Good News (1964)

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    Program booklet for the 21st Annual Pepperdine Bible Lectures, held at Pepperdine College in Los Angeles, California, March 16-20, 1964. The Pepperdine Bible Lectures is an annual event hosted by Pepperdine University featuring a wide variety of lectures and classes on topics and themes in the Bible and Christianity. Jack Scott, Lectureship Directorhttps://digitalcommons.pepperdine.edu/churches/1044/thumbnail.jp

    7th Annual Summer Bible Lectures -- The Christian Home (1964)

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    Program booklet for the Seventh Annual Pepperdine Summer Lectureship, held at Pepperdine College in Los Angeles, California, August 8-13, 1964. The Pepperdine Bible Lectures is an annual event hosted by Pepperdine University featuring a wide variety of lectures and classes on topics and themes in the Bible and Christianity. Jack Scott, Lectureship Directorhttps://digitalcommons.pepperdine.edu/churches/1045/thumbnail.jp

    22nd Annual Spring Bible Lectureship -- New Testament Christianity: The Message for Modern Man (1965)

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    Program booklet for the 22nd Annual Pepperdine Bible Lectures, held at Pepperdine College in Los Angeles, California, March 13-18, 1965. The Pepperdine Bible Lectures is an annual event hosted by Pepperdine University featuring a wide variety of lectures and classes on topics and themes in the Bible and Christianity. Jack Scott, Lectureship Directorhttps://digitalcommons.pepperdine.edu/churches/1046/thumbnail.jp

    Faith in the Workplace: Being a Christian in Public Service

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    8th Annual Summer Bible Lectures -- Confronting Moral Issues (1965)

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    Program booklet for the Eighth Annual Pepperdine Summer Lectureship, held at Pepperdine College in Los Angeles, California, August 7-12, 1965. The Pepperdine Bible Lectures is an annual event hosted by Pepperdine University featuring a wide variety of lectures and classes on topics and themes in the Bible and Christianity. Jack Scott, Lectureship Directorhttps://digitalcommons.pepperdine.edu/churches/1047/thumbnail.jp
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