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Collection:
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NASA Image eXchange Collection
Collection
NASA Image eXchange Collection
Collection
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Title:
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8-Foot High Speed Tunnel
Title
8-Foot High Speed Tunnel
Title
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Description:
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Control panel below the test section of the 8-Foot High Speed Tunnel (8-Foot HST). Authorized July 17, 1933, construction of the 8-Foot HST was paid for with funds from the Federal Public Works Administration. Manly Hood and Russell Robinson designed the unusual facility which could produce a 500 mph wind stream across an 8-Foot test section. The concrete shell was not part of the original design. Like most projects funded through New Deal programs, the PWA restricted the amount of money which could be spent on materials. The majority of funds were supposed to be expended on labor. Though originally, Hood and Robinson had planned a welded steel pressure vessel around the test section, PWA officials proposed the idea of concrete. This picture shows the test section inside the igloo-like structure with walls of 1-foot thick reinforced concrete. The thick walls were needed "because of the Bernoulli effect, [which meant that] the text chamber had to withstand powerful, inwardly directed pressure. Operating personnel located inside the igloo were subjected to pressures equivalent to 10,000-foot altitude and had to wear oxygen masks and enter through airlocks. A heat exchanger removed the large quantities of heat generated by the big fan.
Description
Control panel below the test section of the 8-Foot High Speed Tunnel (8-Foot HST). Authorized July 17, 1933, construction of the 8-Foot HST was paid for with funds from the Federal Public Works Administration. Manly Hood and Russell Robinson designed the unusual facility which could produce a 500 mph wind stream across an 8-Foot test section. The concrete shell was not part of the original design. Like most projects funded through New Deal programs, the PWA restricted the amount of money which could be spent on materials. The majority of funds were supposed to be expended on labor. Though originally, Hood and Robinson had planned a welded steel pressure vessel around the test section, PWA officials proposed the idea of concrete. This picture shows the test section inside the igloo-like structure with walls of 1-foot thick reinforced concrete. The thick walls were needed "because of the Bernoulli effect, [which meant that] the text chamber had to withstand powerful, inwardly directed pressure. Operating personnel located inside the igloo were subjected to pressures equivalent to 10,000-foot altitude and had to wear oxygen masks and enter through airlocks. A heat exchanger removed the large quantities of heat generated by the big fan.
Description
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Date:
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03.20.1936
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Credit:
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facet_what:
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Hubble Space Telescope (HST)
facet_what
Hubble Space Telescope (HST)
facet_what
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facet_where:
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Langley Research Center (LaRC)
facet_where
Langley Research Center (LaRC)
facet_where
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facet_when:
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July 17, 1933
facet_when
July 17, 1933
facet_when
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facet_when:
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03-20-1936
facet_when
03-20-1936
facet_when
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facet_when_year:
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1933
facet_when_year
1933
facet_when_year
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facet_when_year:
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1936
facet_when_year
1936
facet_when_year
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Media:
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IMAGE
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ID:
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EL-1999-00634
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Other ID:
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L11851
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UID:
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SPD-NIX-EL-1999-0063 4
UID
SPD-NIX-EL-1999-0063 4
UID
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orignial url:
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orignial_url
orignial url
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