75 aircraft is a bit high for the air wing complement of any current US Navy Aircraft Carrier.

One carrier has:

• 1 Squadron of F/A-18C Hornets (12 aircraft)
• 2 Squadrons of F/A-18E Hornets (24 aircraft)
• 1 Squadron of F/A-18F Hornets (12 aircraft)
• 1 Detachment of E/A-18G Growlers (4 aircraft)
• 1 Detachment of E-2C Hawkeyes (4 aircraft)
• 1 Detachment of C-2A(R) Greyhounds (2 aircraft)

That is 58 fixed-wing aircraft if you weren’t doing the math.

• 1 Squadron of MH-60S Knighthawks (6 aircraft)
• 1 Squadron of MH-60R Seahawks (4 aircraft)

That is 10 rotary-wing aircraft. And 68 total aircraft. When you get above 70, the traffic on deck and in the hangar get to a point that sorties are harder to operate in a timely manner. In this day and age it must also be said that fewer sorties are required per target. For instance if you wanted to bomb a bridge in 1970 in North Vietnam, you might require 3 Sorties and 12 aircraft.

With precision guided munitions in the present that mission likely can be handled by 2 aircraft. Its only 2 instead of 1 because you are never gonna send 1 aircraft by its lonesome. The Navy believes in the buddy-system, whether you are drinking in town or bombing stuff.

They all use the same gas. In fact they can actually use multiple types of gas if in a pinch.

Typically on a deployment we will refuel every 3–7 days depending on OP TEMPO. Do we have to refuel that often? No, not at all. But the concept of always being a maximum readiness relies on….go figure…..always being at full capability. And full capability means that the tanks are topped off. It must also mentioned that even if we don’t need gas, any time we UNREP for cargo we are always going to take on gas too just to maximize efficiency.

I am not gonna say how long the ship can operate aircraft without filling up. It is not classified but, it might in fact violate operational security. Very slim chance of that but, better to be safe than sorry. When answering on Quora I always operate under the assumption that if I am not sure, I just won’t divulge something. What I will tell you, is that during our last deployment we UNREP’d almost 17 million gallons of jet fuel. ISIS has a little to do with that OP TEMPO by the way, so its definitely not a peacetime cruising statistic.