Estimates from Satellites of Weather Erosion Parameters for Reentry Systems

Estimates from Satellites of Weather Erosion Parameters for Reentry Systems PDF Author: John H. Conover
Publisher:
ISBN:
Category : Aerodynamic heating
Languages : en
Pages : 90

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Book Description
Techniques to estimate reentry vehicle weather erosion parameters from satellite measurements are described. The techniques were developed over a period of three years. An empirical approach was followed with simultaneous measurements of clouds by aircraft and satellite sensors in a series of 41 cases covering a great range of cloud conditions. For each case the aircraft measurements of clouds supplemented by surface weather reports and radar pictures were converted to profiles of hydrometeor densities vs altitude. The erosion parameters predict the amount of material eroded from a nosetip and the range error of the reentry system due to erosion by ice and water particles in the atmosphere. The erosion parameters were related to infrared and visible satellite imagery data from NOAA ITOS satellites by means of non-linear equations. Equations were also developed to estimate total cloud mass and thickness from the same satellite data. Extensive applications and tests were made of the equations to estimate erosion parameters from satellite data.

Estimates from Satellites of Weather Erosion Parameters for Reentry Systems

Estimates from Satellites of Weather Erosion Parameters for Reentry Systems PDF Author: John H. Conover
Publisher:
ISBN:
Category : Aerodynamic heating
Languages : en
Pages : 90

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Book Description
Techniques to estimate reentry vehicle weather erosion parameters from satellite measurements are described. The techniques were developed over a period of three years. An empirical approach was followed with simultaneous measurements of clouds by aircraft and satellite sensors in a series of 41 cases covering a great range of cloud conditions. For each case the aircraft measurements of clouds supplemented by surface weather reports and radar pictures were converted to profiles of hydrometeor densities vs altitude. The erosion parameters predict the amount of material eroded from a nosetip and the range error of the reentry system due to erosion by ice and water particles in the atmosphere. The erosion parameters were related to infrared and visible satellite imagery data from NOAA ITOS satellites by means of non-linear equations. Equations were also developed to estimate total cloud mass and thickness from the same satellite data. Extensive applications and tests were made of the equations to estimate erosion parameters from satellite data.

Horizontal Scale Variations in Satellite Estimates of Weather Erosion Parameters for Reentry Systems

Horizontal Scale Variations in Satellite Estimates of Weather Erosion Parameters for Reentry Systems PDF Author: James T. Bunting
Publisher:
ISBN:
Category : Aerodynamic heating
Languages : en
Pages : 34

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Book Description
A weather erosion parameter known as the Environmental Severity Index (ESI) has been estimated using infrared and visible data from satellites. Cloud sampling requirements limited the original prediction equations to satellite data averaged over a horizontal scale of 70 km. Further experiments have demonstrated great utility for satellite estimates on a scale of 10 km and also revealed some systematic differences between the coarse and the fine scale estimates. The ESI averages 1 percent to 10 percent higher for the fine scale estimates and high values of ESI are observed more frequently. (Author).

Air Force Surveys in Geophysics

Air Force Surveys in Geophysics PDF Author:
Publisher:
ISBN:
Category : Geophysics
Languages : en
Pages : 414

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Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1460

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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Technical Abstract Bulletin

Technical Abstract Bulletin PDF Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 484

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Meteorological Satellite Measurements and Applications

Meteorological Satellite Measurements and Applications PDF Author: James T. Bunting
Publisher:
ISBN:
Category : Atmospheric physics
Languages : en
Pages : 24

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Several current programs in satellite meteorology at the Air Force Geophysics Laboratory are reviewed. First of all, the use of reflected sunlight at both visible and near infrared frequencies to distinguish snow from clouds is described. Secondly, a technique of compositing pictures of many typhoon cases in order to relate cloud features to typhoon motion is discussed. Finally, the use of visible and infrared imagery to estimate erosion parameters for reentry systems is described. (Author).

Improved Cloud Detection Utilizing Defense Meteorological Satellite Program Near Infrared Measurements

Improved Cloud Detection Utilizing Defense Meteorological Satellite Program Near Infrared Measurements PDF Author: James T. Bunting
Publisher:
ISBN:
Category : Infrared detectors
Languages : en
Pages : 96

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Meteorological and Geoastrophysical Abstracts

Meteorological and Geoastrophysical Abstracts PDF Author:
Publisher:
ISBN:
Category : Atmospheric chemistry
Languages : en
Pages : 896

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Remote Sensing

Remote Sensing PDF Author: B. L. Deekshatulu
Publisher:
ISBN:
Category : Remote sensing
Languages : en
Pages : 316

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NASA Technical Paper

NASA Technical Paper PDF Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 728

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