Do you ever have those moments when seemingly random, unrelated thoughts kind of merge together in your mind? This happened to me a couple of weeks ago.
I remembered a documentary I watched on the space shuttle years ago. Something was said about the percentage of fuel it burns within the first two minutes of liftoff. It stuck in my mind and I tried to find the information on Google. No luck. Then I remembered that one of my family members (Dale Hutchens, Ph.D.) works with NASA. He is a chemical engineer who was directly involved with developing the shuttle’s solid rockets. He gave me a quick estimate:
For launch, the solids provide the vast, vast majority the total LAUNCH thrust. The solids burn out in 2 minutes and 12 seconds, if memory serves. Each solid holds 1.1 million pounds of propellant. Therefore, in the first minute, you probably burn something more than 50% of the solids, or 41-ish % of the total fuel. A more certain number is that in 2 minutes and 12 seconds you have burned all the solids (2