I agree with the old feeker, horlicks or just warm milk is good with aiding sleep. Use natural stuff... think of a baby that has just been breast fed.. they drink and then sleep for hours
Might be very effective with the right Flight Nurse helping out!
On a serious note....I always tried to arrive at work with a "Sleep Bonus" rather than a "Sleep Deficit". That being....stay up in the morning....and do your sleeping in the afternoon so as to awake just in time to shower, chow, and get to work. Far better than going home....chowing...then hitting the bed to awake several hours before going to work.