Item Details

A Buoyant Tornado-Probe Concept Incorporating an Inverted Lifting Device

by Frederick C. Grant
Format
Book; Government Document; Online; EBook
Published
Washington, D.C. : National Aeronautics and Space Administration ; [Springfield, Va. : For sale by the National Technical Information Service], 1973.
Language
English
Series
NASA Technical Note
Summary
Addition of an inverted lifting device to a simple balloon probe is shown to make possible low-altitude entry to tornado cores with easier launch conditions than for the simple balloon probe. Balloon-lifter combinations are particularly suitable for penetration of tornadoes with average to strong circulation, but tornadoes of less than average circulation which are inaccessible to simple balloon probes become accessible. The increased launch radius which is needed for access to tornadoes over a wide range of circulation results in entry times of about 3 minutes. For a simple balloon probe the uninflated balloon must be first dropped on, or near, the track of the tornado from a safe distance. The increase in typical launch radius from about 0.75 kilometer to slightly over 1.0 kilometer with a balloon-lifter combination suggests that a direct air launch may be feasible.
Description
28 p. : ill. ; 27 cm.
Mode of access: Internet.
Notes
  • Prepared at Langley Research Center.
  • Cover title.
  • Bibliography: p. 20.
Series Statement
NASA technical note ; NASA TN D-7335
Logo for No Copyright - United StatesNo Copyright - United States
Technical Details

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    a| A buoyant tornado-probe concept incorporating an inverted lifting device c| by Frederick C. Grant.
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    a| Washington, D.C. : b| National Aeronautics and Space Administration ; a| [Springfield, Va. : b| For sale by the National Technical Information Service], c| 1973.
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    a| 28 p. : b| ill. ; c| 27 cm.
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    a| NASA technical note ; v| NASA TN D-7335
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    a| Prepared at Langley Research Center.
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    a| Cover title.
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    a| Bibliography: p. 20.
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    a| Addition of an inverted lifting device to a simple balloon probe is shown to make possible low-altitude entry to tornado cores with easier launch conditions than for the simple balloon probe. Balloon-lifter combinations are particularly suitable for penetration of tornadoes with average to strong circulation, but tornadoes of less than average circulation which are inaccessible to simple balloon probes become accessible. The increased launch radius which is needed for access to tornadoes over a wide range of circulation results in entry times of about 3 minutes. For a simple balloon probe the uninflated balloon must be first dropped on, or near, the track of the tornado from a safe distance. The increase in typical launch radius from about 0.75 kilometer to slightly over 1.0 kilometer with a balloon-lifter combination suggests that a direct air launch may be feasible.
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    a| Mode of access: Internet.
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    a| Balloons.
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    a| Tornadoes x| Research x| Equipment and supplies x| Mathematical models.
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    a| United States. b| National Aeronautics and Space Administration.
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    a| Langley Research Center.
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