How do you confirm ignition in the combustion chamber of a rocket?

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Is ignition confirmed using a temperature sensor, pressure sensor or another device?






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    Is ignition confirmed using a temperature sensor, pressure sensor or another device?






    propulsion engine-design combustion ignition







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      up vote
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      up vote
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      down vote

      favorite











      Is ignition confirmed using a temperature sensor, pressure sensor or another device?






      propulsion engine-design combustion ignition







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      EdwardJ is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      Is ignition confirmed using a temperature sensor, pressure sensor or another device?






      propulsion engine-design combustion ignition




      propulsion engine-design combustion ignition






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      edited 35 mins ago









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          For the Space Shuttle Main Engine, four checks were done to set the "Ignition Confirmed" condition.



          1. The High Pressure Fuel Turbopump shaft speed was checked against a minimum limit.

          2. The Main Combustion Chamber pressure was checked twice, once against a minimum limit, and once to ensure it was between an upper and lower bound.

          3. The Antiflood Valve was checked to ensure that it was open.

          enter image description here



          The Antiflood Valve was a pressure-operated poppet valve that, when open, allowed liquid oxygen to flow into the SSME heat exchanger and then on to the LOX tank in the External Tank.



          enter image description here



          source



          Lots of other parameters were checked continuously throughout engine operation and could shut the system down if limits were exceeded; these were just the ones that set Ignition Confirmed.






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            up vote
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            down vote













            For the Space Shuttle Main Engine, four checks were done to set the "Ignition Confirmed" condition.



            1. The High Pressure Fuel Turbopump shaft speed was checked against a minimum limit.

            2. The Main Combustion Chamber pressure was checked twice, once against a minimum limit, and once to ensure it was between an upper and lower bound.

            3. The Antiflood Valve was checked to ensure that it was open.

            enter image description here



            The Antiflood Valve was a pressure-operated poppet valve that, when open, allowed liquid oxygen to flow into the SSME heat exchanger and then on to the LOX tank in the External Tank.



            enter image description here



            source



            Lots of other parameters were checked continuously throughout engine operation and could shut the system down if limits were exceeded; these were just the ones that set Ignition Confirmed.






            share|improve this answer
























              up vote
              5
              down vote













              For the Space Shuttle Main Engine, four checks were done to set the "Ignition Confirmed" condition.



              1. The High Pressure Fuel Turbopump shaft speed was checked against a minimum limit.

              2. The Main Combustion Chamber pressure was checked twice, once against a minimum limit, and once to ensure it was between an upper and lower bound.

              3. The Antiflood Valve was checked to ensure that it was open.

              enter image description here



              The Antiflood Valve was a pressure-operated poppet valve that, when open, allowed liquid oxygen to flow into the SSME heat exchanger and then on to the LOX tank in the External Tank.



              enter image description here



              source



              Lots of other parameters were checked continuously throughout engine operation and could shut the system down if limits were exceeded; these were just the ones that set Ignition Confirmed.






              share|improve this answer






















                up vote
                5
                down vote










                up vote
                5
                down vote









                For the Space Shuttle Main Engine, four checks were done to set the "Ignition Confirmed" condition.



                1. The High Pressure Fuel Turbopump shaft speed was checked against a minimum limit.

                2. The Main Combustion Chamber pressure was checked twice, once against a minimum limit, and once to ensure it was between an upper and lower bound.

                3. The Antiflood Valve was checked to ensure that it was open.

                enter image description here



                The Antiflood Valve was a pressure-operated poppet valve that, when open, allowed liquid oxygen to flow into the SSME heat exchanger and then on to the LOX tank in the External Tank.



                enter image description here



                source



                Lots of other parameters were checked continuously throughout engine operation and could shut the system down if limits were exceeded; these were just the ones that set Ignition Confirmed.






                share|improve this answer












                For the Space Shuttle Main Engine, four checks were done to set the "Ignition Confirmed" condition.



                1. The High Pressure Fuel Turbopump shaft speed was checked against a minimum limit.

                2. The Main Combustion Chamber pressure was checked twice, once against a minimum limit, and once to ensure it was between an upper and lower bound.

                3. The Antiflood Valve was checked to ensure that it was open.

                enter image description here



                The Antiflood Valve was a pressure-operated poppet valve that, when open, allowed liquid oxygen to flow into the SSME heat exchanger and then on to the LOX tank in the External Tank.



                enter image description here



                source



                Lots of other parameters were checked continuously throughout engine operation and could shut the system down if limits were exceeded; these were just the ones that set Ignition Confirmed.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 39 mins ago









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