File:JPL hailstone research.jpg
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[edit]DescriptionJPL hailstone research.jpg |
English: In 1979, this test fixture was used to study how much damage would occur when a solar panel was hit with hail measuring 1/2 inch to 5 inches in diameter. The white tube is the hailgun barrel. Interchangeable barrels of various sizes matched the diameter of the “hail” or ice ball being tested. The solar panel was mounted on the ceiling of the test facility, and an air compressor provided the force to project hailstones upward at about the same velocity as a storm. In this photo, Lee Albers and Bill Peer of the Test and Mechanical Support Section at NASA's Jet Propulsion Laboratory load an ice ball into the barrel.
Some of the same equipment was originally used to test possible hail damage in Deep Space Network antenna panels. In summer 1962, after similar tests were done at the South Africa Deep Space Station, a hailstorm simulation facility was developed at JPL to continue the study. The equipment included heated molds to form ice balls of various sizes and a chest freezer to keep them at 18 degrees Fahrenheit. Hail Stone Research for Solar Panels Lee Albers and Bill Peer Date Filed: 4/18/79 Requestor: R. House |
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Source | https://www.jpl.nasa.gov/blog/?page=4&search=&blog_columns=Slice+of+History&blog_authors= |
Author | NASA |
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[edit]Public domainPublic domainfalsefalse |
This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ||
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Date and time of data generation | 20:18, 17 June 2011 |
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Width | 1,907 px |
Height | 1,905 px |
Bits per component | 8 |
Compression scheme | Uncompressed |
Pixel composition | Black and white (Black is 0) |
Image data location | 27,022 |
Orientation | Normal |
Number of components | 1 |
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File change date and time | 16:56, 4 February 2014 |
Exif version | 2.21 |
Date and time of digitizing | 20:18, 17 June 2011 |
DateTimeOriginal subseconds | 00 |
DateTimeDigitized subseconds | 00 |
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