Why was ramjet fuel used as hydraulic fluid during Saturn V checkout?How much fuel was used for a Space Shuttle launch?Could 3D printing be used to achieve perfect grain geometry of solid and hybrid rocket motors?Why weren't SRBs used in the design of the Saturn V?How would the Saturn V have differed if the first stage was also LH2/LOX?Why was this Saturn rocket elevated for launch?Was CNC milling used in the 1960's for making the Apollo/Saturn rocket engines?Why was the Saturn V considered to be human-rated after Apollo 6?Was all the fuel expended in each stage of a Saturn V launch?
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Why was ramjet fuel used as hydraulic fluid during Saturn V checkout?
How much fuel was used for a Space Shuttle launch?Could 3D printing be used to achieve perfect grain geometry of solid and hybrid rocket motors?Why weren't SRBs used in the design of the Saturn V?How would the Saturn V have differed if the first stage was also LH2/LOX?Why was this Saturn rocket elevated for launch?Was CNC milling used in the 1960's for making the Apollo/Saturn rocket engines?Why was the Saturn V considered to be human-rated after Apollo 6?Was all the fuel expended in each stage of a Saturn V launch?
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$begingroup$
Fuel is also used within the engine as a lubricant and as a hydraulic
working fluid, though before launch, RJ-1 ramjet fuel is supplied from
the ground, it being more suited for this purpose.
https://history.nasa.gov/afj/ap11fj/01launch.html
I can't seem to find any more background on why this was done. What properties made RP-1 unsuitable for ground use?
fuel saturn-v
asked 8 hours ago
0xDBFB70xDBFB7
7886 silver badges12 bronze badges
$endgroup$
add a comment |
$begingroup$
Fuel is also used within the engine as a lubricant and as a hydraulic
working fluid, though before launch, RJ-1 ramjet fuel is supplied from
the ground, it being more suited for this purpose.
https://history.nasa.gov/afj/ap11fj/01launch.html
I can't seem to find any more background on why this was done. What properties made RP-1 unsuitable for ground use?
fuel saturn-v
asked 8 hours ago
0xDBFB70xDBFB7
7886 silver badges12 bronze badges
$endgroup$
add a comment |
$begingroup$
Fuel is also used within the engine as a lubricant and as a hydraulic
working fluid, though before launch, RJ-1 ramjet fuel is supplied from
the ground, it being more suited for this purpose.
https://history.nasa.gov/afj/ap11fj/01launch.html
I can't seem to find any more background on why this was done. What properties made RP-1 unsuitable for ground use?
fuel saturn-v
asked 8 hours ago
0xDBFB70xDBFB7
7886 silver badges12 bronze badges
$endgroup$
Fuel is also used within the engine as a lubricant and as a hydraulic
working fluid, though before launch, RJ-1 ramjet fuel is supplied from
the ground, it being more suited for this purpose.
https://history.nasa.gov/afj/ap11fj/01launch.html
I can't seem to find any more background on why this was done. What properties made RP-1 unsuitable for ground use?
fuel saturn-v
fuel saturn-v
asked 8 hours ago
0xDBFB70xDBFB7
7886 silver badges12 bronze badges
asked 8 hours ago
0xDBFB70xDBFB7
7886 silver badges12 bronze badges
asked 8 hours ago
0xDBFB70xDBFB7
7886 silver badges12 bronze badges
asked 8 hours ago
0xDBFB70xDBFB7
7886 silver badges12 bronze badges
asked 8 hours ago
0xDBFB70xDBFB7
7886 silver badges12 bronze badges
7886 silver badges12 bronze badges
add a comment |
add a comment |
1 Answer
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$begingroup$
What a fascinating question!
Turns out it's less flammable.
Ground Supply Fluid—Because the flash point of RP-1 fuel, which
supplies the system in flight, is 110 to 139° F, it is classified as a
Class Ill flammable liquid, not suitable for ground operations. A
study was made to find substitute fluids with properties similar to
RP-1 that could be used in the laboratory and in ground operations.
Such a fluid was found in RJ-1, a ramjet fuel. It has properties very
similar to RP-1, but a flashpoint ranging from 190 to 208° F. If
purchased with a specified flashpoint exceeding 200° F, it is not
classed as a flammable liquid by the National Code and would not have
the same stringent handling requirements of RP-1 fuels. Therefore, the
RJ-1 fuel can be used in the laboratories or in GSE with the same
precautions as taken with MIL-H-5606
GSE = Ground Support Equipment
Source - The December 1963 issue of Hydraulics and Pneumatics magazine
answered 8 hours ago
Organic MarbleOrganic Marble
74.9k4 gold badges223 silver badges322 bronze badges
$endgroup$
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$begingroup$
What a fascinating question!
Turns out it's less flammable.
Ground Supply Fluid—Because the flash point of RP-1 fuel, which
supplies the system in flight, is 110 to 139° F, it is classified as a
Class Ill flammable liquid, not suitable for ground operations. A
study was made to find substitute fluids with properties similar to
RP-1 that could be used in the laboratory and in ground operations.
Such a fluid was found in RJ-1, a ramjet fuel. It has properties very
similar to RP-1, but a flashpoint ranging from 190 to 208° F. If
purchased with a specified flashpoint exceeding 200° F, it is not
classed as a flammable liquid by the National Code and would not have
the same stringent handling requirements of RP-1 fuels. Therefore, the
RJ-1 fuel can be used in the laboratories or in GSE with the same
precautions as taken with MIL-H-5606
GSE = Ground Support Equipment
Source - The December 1963 issue of Hydraulics and Pneumatics magazine
answered 8 hours ago
Organic MarbleOrganic Marble
74.9k4 gold badges223 silver badges322 bronze badges
$endgroup$
add a comment |
$begingroup$
What a fascinating question!
Turns out it's less flammable.
Ground Supply Fluid—Because the flash point of RP-1 fuel, which
supplies the system in flight, is 110 to 139° F, it is classified as a
Class Ill flammable liquid, not suitable for ground operations. A
study was made to find substitute fluids with properties similar to
RP-1 that could be used in the laboratory and in ground operations.
Such a fluid was found in RJ-1, a ramjet fuel. It has properties very
similar to RP-1, but a flashpoint ranging from 190 to 208° F. If
purchased with a specified flashpoint exceeding 200° F, it is not
classed as a flammable liquid by the National Code and would not have
the same stringent handling requirements of RP-1 fuels. Therefore, the
RJ-1 fuel can be used in the laboratories or in GSE with the same
precautions as taken with MIL-H-5606
GSE = Ground Support Equipment
Source - The December 1963 issue of Hydraulics and Pneumatics magazine
answered 8 hours ago
Organic MarbleOrganic Marble
74.9k4 gold badges223 silver badges322 bronze badges
$endgroup$
add a comment |
$begingroup$
What a fascinating question!
Turns out it's less flammable.
Ground Supply Fluid—Because the flash point of RP-1 fuel, which
supplies the system in flight, is 110 to 139° F, it is classified as a
Class Ill flammable liquid, not suitable for ground operations. A
study was made to find substitute fluids with properties similar to
RP-1 that could be used in the laboratory and in ground operations.
Such a fluid was found in RJ-1, a ramjet fuel. It has properties very
similar to RP-1, but a flashpoint ranging from 190 to 208° F. If
purchased with a specified flashpoint exceeding 200° F, it is not
classed as a flammable liquid by the National Code and would not have
the same stringent handling requirements of RP-1 fuels. Therefore, the
RJ-1 fuel can be used in the laboratories or in GSE with the same
precautions as taken with MIL-H-5606
GSE = Ground Support Equipment
Source - The December 1963 issue of Hydraulics and Pneumatics magazine
answered 8 hours ago
Organic MarbleOrganic Marble
74.9k4 gold badges223 silver badges322 bronze badges
$endgroup$
What a fascinating question!
Turns out it's less flammable.
Ground Supply Fluid—Because the flash point of RP-1 fuel, which
supplies the system in flight, is 110 to 139° F, it is classified as a
Class Ill flammable liquid, not suitable for ground operations. A
study was made to find substitute fluids with properties similar to
RP-1 that could be used in the laboratory and in ground operations.
Such a fluid was found in RJ-1, a ramjet fuel. It has properties very
similar to RP-1, but a flashpoint ranging from 190 to 208° F. If
purchased with a specified flashpoint exceeding 200° F, it is not
classed as a flammable liquid by the National Code and would not have
the same stringent handling requirements of RP-1 fuels. Therefore, the
RJ-1 fuel can be used in the laboratories or in GSE with the same
precautions as taken with MIL-H-5606
GSE = Ground Support Equipment
Source - The December 1963 issue of Hydraulics and Pneumatics magazine
answered 8 hours ago
Organic MarbleOrganic Marble
74.9k4 gold badges223 silver badges322 bronze badges
edited 5 hours ago
answered 8 hours ago
Organic MarbleOrganic Marble
74.9k4 gold badges223 silver badges322 bronze badges
answered 8 hours ago
Organic MarbleOrganic Marble
74.9k4 gold badges223 silver badges322 bronze badges
answered 8 hours ago
Organic MarbleOrganic Marble
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