Damage Inc. Pacific Squadron WWII (which used to be the much more feasible War Wings) is like, you're in luck. The game now has a playable demo, available on Xbox Live. The demo is exclusive to Gold members, rings in at just about 770 mb, and can be grabbed for free.
Unfortunately, the demo doesn't come with a free Pacific AV8R flightstick, which Mad Catz will be including with the Collector's Edition of the game, and presumably will be the best way to experience flying around in the Pacific Theater. As Mad Catz says in the press release, this game is part of its goal of "pursuing targeted software opportunities that pose manageable downside risk by complementing our hardware initiatives." Which is corporate talk for: They're making the game to sell the stick.
But if you have another Mad Catz flight stick, it should work, or just a standard controller will probably do what you need as well. If the demo spins your propeller, the game will be out on August 28.