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BillR mastering
First system, 1972
Nasa @ Huntsville had that one beat by many magnitudes.
1965, NASA had a steel and concrete horn in Huntsville at the Redstone arsenal, capable of 210dB for the testing of space suits during Booster load sound pressure levels for the proposed Saturn V. It is still in the Guiness book of world records. The note says "holes can be bored in solid material by these means"
I will see if I can dig up some info about it.
1965, NASA had a steel and concrete horn in Huntsville at the Redstone arsenal, capable of 210dB for the testing of space suits during Booster load sound pressure levels for the proposed Saturn V. It is still in the Guiness book of world records. The note says "holes can be bored in solid material by these means"
I will see if I can dig up some info about it.
treserious
Post Punk Junkie
BillR mastering
First system, 1972
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660014564_1966014564.pdf
Go ahead, read that.
The internet has a strange way of attempting to rewrite history.
A good copy of a 1975-1981 Guiness book of world records has the detail and the pictures. Good Universities have all of the Journals from JASOA and many pages have been written (with pictures) of the device.
More references-
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19990040687_1999055009.pdf
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19640014086_1964014086.pdf
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660025056_1966025056.pdf
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660006026_1966006026.pdf
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660006537_1966006537.pdf
Go ahead, read that.
The internet has a strange way of attempting to rewrite history.
A good copy of a 1975-1981 Guiness book of world records has the detail and the pictures. Good Universities have all of the Journals from JASOA and many pages have been written (with pictures) of the device.
More references-
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19990040687_1999055009.pdf
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19640014086_1964014086.pdf
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660025056_1966025056.pdf
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660006026_1966006026.pdf
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660006537_1966006537.pdf
MunkeyQ
Super Member
The difference is you can't buy one of those. :thmbsp:
Some info would be pretty interesting though.
I only did a very quick read, but it appears they scaled up from the models...
"The spectrum of the 1:20 model, scaled to the size of the S-IC, exhibits
an overall sound power level of 191 db, and thus affords an overall
reduction of the radiated sound power by 22 decibels.
up to the S-IC size sound suppressor, has an overall sound power level of 187
db, and provides a sound power reduction of 26 decibels."
"The spectrum of the 1:20 model, scaled to the size of the S-IC, exhibits
an overall sound power level of 191 db, and thus affords an overall
reduction of the radiated sound power by 22 decibels.
up to the S-IC size sound suppressor, has an overall sound power level of 187
db, and provides a sound power reduction of 26 decibels."
BillR mastering
First system, 1972
The 1:7 was the more accurate model. Even so, 26 db reduction to 187 would put the extrapolation way up there.
Basically, I was made aware of the "210dB figure" from the Guiness book of world records.
Take it for what it is worth.
The basic premise is that the 1965 record stands. The compressability of air is the bottleneck.
Basically, I was made aware of the "210dB figure" from the Guiness book of world records.
Take it for what it is worth.
The basic premise is that the 1965 record stands. The compressability of air is the bottleneck.
