I'm going to date myself AND show my ignorance with these questions ...
Back in my youth, large clusters were ignited using a technique called flashbulb ignition, which I believe was developed by John Langford - I used it to ignite a scratch built 8 engine cluster when I was in my late teens. It was extremely reliable, though you had to make sure your launch controller was "flashbulb safe".
So my questions are...
1) Is it still used? and
2) If not, then what is?
Thanks in advance...
Back in my youth, large clusters were ignited using a technique called flashbulb ignition, which I believe was developed by John Langford - I used it to ignite a scratch built 8 engine cluster when I was in my late teens. It was extremely reliable, though you had to make sure your launch controller was "flashbulb safe".
So my questions are...
1) Is it still used? and
2) If not, then what is?
Thanks in advance...