Average precipitation is heavy, a result of the convergence of the prevailing airflow from the Mediterranean Sea and the continental air mass.

A scramjet ( supersonic combusting ramjet ) is a variant of a ramjet airbreathing jet engine in which combustion takes place in supersonic airflow.

An annular combustor is a continuous ring where fuel is injected into the airflow and ignited, raising the pressure and temperature of the flow.

For the CF6 80A A1, the fan diameter remains at 86.4 in (2.19 m), with an airflow of 1435 lb s (651 kg s).

CF6 80C2 For the CF6 80C2 A1, the fan diameter is increased to 93 in (2.36 m), with an airflow of 1750 lb s (790 kg s).

At the critical Mach number, local airflow in some areas near the airframe reaches the speed of sound, even though the aircraft itself has an airspeed lower than Mach 1.0.

Although the 86.4 in (2.19 m) diameter fan was retained, the airflow was raised to 1,450 lb s (660 kg s), yielding a static thrust of 51,000 lbf (227 kN).

(Net efficiency is the amount of heat energy transferred to the room compared to the amount contained in the wood, minus any amount central heating must work to compensate for airflow problems.