All Questions
4
questions
4
votes
1
answer
124
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What is the dark brown gas emission seen during the ascent of Starship?
During the video (see below) of Starship IFT-4 there is a lot of brown smoke or gas in the Superheavy exhaust from near the start for almost 30 seconds. Is this NO2? If so roughly how much is produced?...
- 9,802
1
vote
0
answers
83
views
What is the ratio of air and ethyl alcohol that must be in order to power a rocket engine? [closed]
There is a rocket engine that will run on a fuel pair: air + ethyl alcohol, but what percentage of components should be supplied ...
2
votes
1
answer
179
views
Why maintain nominal engine inlet mixture ratio for a gas generator engine?
I was reading up on gas generator cycles and came across the following paragraph talking about fuel or oxidizer rich gas generators and the different mixture ratios for the main combustion chamber ...
- 1,154
9
votes
4
answers
6k
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Is there a maximum Isp for "exothermic chemical reaction rockets"?
The question Is there a maximum $\text{I}_{sp}$? reminded me that I once read somewhere that the maximum possible $\text{I}_{sp}$ for a rocket engine based on expansion driven by exothermic, ...
- 149k