Abstract: A method and apparatus for disposing of fecal matter from a toilet system in a fast moving vehicle during travel of the vehicle. The liquid components of the fecal matter are dehydrated to recover water. The water is disposed of by either discharging the water to the environment of the vehicle or by re-using the water in systems of the vehicle. The remainder of the fecal matter is introduced into a collection vessel of in the vehicle.

Abstract: In a method for de-icing aircraft surfaces by means of a plurality of electrical resistance heaters which are sequentially supplied with heating current, the delivery of current to each heater being effectuated during a succession of cycles each constituted by a heating period during which heating current is supplied to the heater and a nonheating period during which no current is supplied to the heater, thereby controlling the average current supplied to the heater, the range of ice accumulation rates to which the de-icing process can adjust is enlarged by controlling the duration of the heating periods in dependence on the temperature at the resistance heaters and by controlling the duration of the nonheating periods in dependence on the water content of the atmosphere surrounding the aircraft.