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Questions tagged [ignition]

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3
votes
0answers
64 views

Problems with shutting off “torch igniter” during the operation of combustion chamber

With reference to the presentation pp 76, where SSME's Augmented Spark Igniter is said to have their flame "On" even after the main combustion chamber ignition, is to prevent the blowback from the ...
17
votes
2answers
1k views

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

Is ignition confirmed using a temperature sensor, pressure sensor or another device?
2
votes
0answers
36 views

Effect of the location of igniter in starting liquid rocket engine

What will be the effect of off axis igniter, say a Spark igniter has to be used along with a pintle? Will the igniter being off axis have any effect on engine start? Also, will an off-center igniter ...
2
votes
0answers
48 views

How to overcome the challenge of igniting kerosene using spark plugs?

Discussions in this question and its answer, concerning the use of spark plug ignition for Kero/GOx system outlines the energy limitations of spark plugs to ignite the mixture. But Ignition Transient ...
1
vote
1answer
80 views

Does kerosene get ignited by a spark plug? [duplicate]

Are spark plugs used in kero-LOx engine(say J1 engines)? If so, then there are two major issues when using spark plug to ignite kerosene. Wetting of the spark plug causes spark to be smaller and the ...
1
vote
1answer
130 views

How long does Augmented Spark Igniter fire?

The heroicrelics.org page J-2 Rocket Engine Augmented Spark Igniter mentions that The ASI operates continuously during entire engine firing Does this how all spark igniters function in rocket ...
1
vote
1answer
136 views

How is a spark plug igniter of rocket different from one used in IC engines?

US20120103302 shows a spark ignited prechamber combustion system typically used for IC engines. It basically consists of a chamber which has a input of premixed fuel-air mixture and a spark plug to ...
15
votes
1answer
2k views

How were the Space Shuttle SRBs ignited? (with what?)

I'm unable to find how exactly the Space Shuttle's SRBs were ignited, or what exactly was used to ignite the rocket. I'm trying to figure out the best way to instantly ignite a solid rocket reliably,...
8
votes
1answer
883 views

What if an engine fails to ignite on Falcon Heavy?

The Falcon Heavy has 27 engines (Suck on it N-1!) in three sets of 9 (per core booster). SpaceX initially suggested they might need a couple of static fires to nail down the ignition sequence, since ...