Eagle
The Amazing Flying Tuna Can
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It would need to be outfitted with a fission reactor first.
Maybe, its doable with solar panels, but you will have to increase ISS's available power a little more than fivefold.
The only hard part is getting an engine with a specific impulse greater than ISS's orbital speed(and uses air or an air derivative as reaction mass(Nitrogen?)). Using wikipedia's number of: 7.707 km/s we NEED an ISP greater than that.
Why? Every kilogram collected needs to be accelerated up to ISS's speed. To counter the 7.707 kN force. We counter it by spewing out mass the other end. If our ISP is lower than our orbital speed we spend more than 1 kg in reaction mass.
Lets say we use all Nitrogen collected as reaction mass (~75% by mass). We need an ISP of: 10.2 km/s. If we use 90% of what we collected we only need an ISP of: 8.5 km/s
Now, people need 2.4 g of O2 a minute. Lets say the 10% we keep is all O2 and we have six crew members (2.4*10^-4 kg/s) needed. To sustain this we need to scoop 2.4*10^-3 kg/s from around us.
This means our scoop will give us a drag off: 18.5 N. Using an ISP of 8.5 km/s and 100% efficiency gives us a minimum power requirement of: 158.4 kW. Depending upon the efficiency it may be significantly higher.
ISS produces 33 kW, so you will need some more power(from some source).
But, we don't need to truck in air any more.
Anyone want to calculate how large the scoop would be?