>>12033562If we go on the premise that 1 kg of wood will produce the optimal ~280 kCal=1.171 *10^6 J then we can calculate based on the idea that it takes 3.29*10^7 J to get 1 kg into low earth orbit.
So that would mean you need to burn 28 kg of wood to get 1 kg into orbit.
So assuming a mass of two humans being 150 kg you would need to burn 4214 kg of wood. Or a fraction of 1 redwood tree that weighs around 725000 kg.
