[yborg]

One of the perks of being in a Tu-22 unit in the 1960s was having access to the large supply of 40% ethanol used for the cockpit air-conditioning system.

[tibbydudeza]

The Mig-25 Foxbat also used alcohol for cooling - those PVO (Soviet Air Defence) units stationed in the cold could keep themselves warm.

[DocTomoe]

Oh, they didn't drink it (not the vast majority of it, at least). Alcohol was a de-facto currency.

[p_l]

Many airplane radar systems used alcohol in evaporative cooling system, "dipping into stores" was apparently a common problem.