Abstract: An insitu wet combustion process for the recovery of heavy oils from subterranean oil formations, such as tar sands, in which non-oxygen containing fluid, such as water, is introduced along with air cyclically to produce periodic high volume rates of injected fluid, great enough to increase the total sensible heat carrying capacities of the air and the vaporized fluid, such as steam, entering the flame zone substantially above the sensible heat capacity of the rock formation entering the flame zone, to substantially increase the temperatures of a downstream hot zone downstream of the flame front, without quenching the combustion.

Abstract: A flight planning system for obtaining flight plans and/or weather information is provided with a portable computer having a display unit, keyboard, memory, built in modem and a built in disk drive that can be connected via telephone lines to a ground based data center. The basic flight planning data and/or weather request data is input in response to menu driven prompts and reviewed on the display by the pilot. The portable computer is then connected to the data center which generates a series of optimized flight plans and provides desired weather information. After the desired flight plan and/or weather information has been selected by the pilot, it is loaded onto a floppy disk in the disk drive. The aircraft is provided with a data transfer unit which accepts the floppy disk and downloads the flight plan and requested weather information into the onboard computerized navigation system.