DOS Games made for DOS require an emulator to run on Windows. Use DOSBox or a frontend like D-Fend Reloaded and read this guide to play DOS games on your Windows PC.
ACE (1991): "For those who prefer dizzying arrays of dials and technical authenticity to the more simplistic arcade aerobatics of, say, Jetfighter II, Chuck Yeager's Air Combat is a must. The image of the game as more of a training aid than a straight flight simulation helps to re-inforce the feeling of realism, and the later parts of the bulky manual - which interacts well with the program itself - make genuinely interesting reading. Definitely NOT for boy racers who can't handle more than up-down-left-right-fire, but if you seek a more challenging and longer-lasting experience, you can't go wrong."
Computer Gaming World (1991): "A combat flight simulator offering the ability to fly scenarios in World War II, Korea or Vietnam, or mix and match them. Good graphics, good game play and an excellent post-mission analysis yield a high recommendation."