RSS Feed
Twitter
June 07, 2018
Flemment
Similarly as with quite a bit of history, it's the untold stories that are intriguing and give extra understanding into particular focuses in our past.
The Gemini program of NASA was the two man case take after on to Project Mercury (which propelled the primary American into space).
There were numerous contrasts between Project Mercury and the Gemini Project, not the slightest of which was the fuels utilized for the on-board motors. The Mercury container drive framework utilized hydrogen peroxide constrained over a metal screen into the motors creating steam which controlled the case. The Gemini case utilized nitrogen tetra oxide and hydrazine that were each constrained into the motor chamber. These two synthetic compounds naturally touch off upon contact (hypergolic) delivering the power for the guiding and reentry motors of the shuttle.
These two synthetic compounds were put away in Teflon bladders which when pressurized with helium "squirted" the separate substance into the motor chambers. In the mid 1960s a great deal about Teflon, as with the two compound forces, which was obscure and there were trials and mistakes.
Amid the checkout of Gemini 6 it was found that the check valves (which were to shield the compound vapors from moving over into the basic helium supply) were staying open. Nobody knew why and it was of such a size, to the point that the consequent dispatch of Gemini 6 was, scoured moving Gemini 7 into the following dispatch space.
I was functioning as a substance expert in the NASA Propulsion System Office at Cape Canaveral and felt that the staying check valves were being caused by something doing with the concoction charges. I recommended that a progression of tests be directed to see whether this was in truth the reason and on the off chance that it were, to discover an answer for the issue.
I led a progression of tests at an unused dispatch complex with the help of Joe Fitzsimmons (a NASA summer associate). Helium was blown over individual canisters of nitrogen tetra oxide and hydrazine and permitted to blend in a section outside the square house if there should be an occurrence of a blast.
Beyond any doubt enough a yellowish substance kept onto the internal surfaces of the segment. We had discovered the wellspring of what was making the check valves stick. Presently the inquiry was the means by which to dispose of it.
We found the arrangement - blow over the yellowish substance with dry helium or nitrogen and the substance "dissolved" away. With this data, we could settle the staying valves of Gemini 6 permitting the resulting dispatch of Gemini 6 and the "vis-à-vis" meeting of Gemini case 7 and 6.
For this work, Joe and I were given huge pictures (surrounded with no glass) of a Gemini container on a Titan Launch vehicle at liftoff. Regardless I have that photo today.
© September 2007 John D. Beeson
The Gemini program of NASA was the two man case take after on to Project Mercury (which propelled the primary American into space).
There were numerous contrasts between Project Mercury and the Gemini Project, not the slightest of which was the fuels utilized for the on-board motors. The Mercury container drive framework utilized hydrogen peroxide constrained over a metal screen into the motors creating steam which controlled the case. The Gemini case utilized nitrogen tetra oxide and hydrazine that were each constrained into the motor chamber. These two synthetic compounds naturally touch off upon contact (hypergolic) delivering the power for the guiding and reentry motors of the shuttle.
These two synthetic compounds were put away in Teflon bladders which when pressurized with helium "squirted" the separate substance into the motor chambers. In the mid 1960s a great deal about Teflon, as with the two compound forces, which was obscure and there were trials and mistakes.
Amid the checkout of Gemini 6 it was found that the check valves (which were to shield the compound vapors from moving over into the basic helium supply) were staying open. Nobody knew why and it was of such a size, to the point that the consequent dispatch of Gemini 6 was, scoured moving Gemini 7 into the following dispatch space.
I was functioning as a substance expert in the NASA Propulsion System Office at Cape Canaveral and felt that the staying check valves were being caused by something doing with the concoction charges. I recommended that a progression of tests be directed to see whether this was in truth the reason and on the off chance that it were, to discover an answer for the issue.
I led a progression of tests at an unused dispatch complex with the help of Joe Fitzsimmons (a NASA summer associate). Helium was blown over individual canisters of nitrogen tetra oxide and hydrazine and permitted to blend in a section outside the square house if there should be an occurrence of a blast.
Beyond any doubt enough a yellowish substance kept onto the internal surfaces of the segment. We had discovered the wellspring of what was making the check valves stick. Presently the inquiry was the means by which to dispose of it.
We found the arrangement - blow over the yellowish substance with dry helium or nitrogen and the substance "dissolved" away. With this data, we could settle the staying valves of Gemini 6 permitting the resulting dispatch of Gemini 6 and the "vis-à-vis" meeting of Gemini case 7 and 6.
For this work, Joe and I were given huge pictures (surrounded with no glass) of a Gemini container on a Titan Launch vehicle at liftoff. Regardless I have that photo today.
© September 2007 John D. Beeson
0 comments:
Post a Comment