Post by LOU on Jun 4th, 2015 at 12:32am
Cappy,
Since the last planes I flew (767) had manual ignition I guess I'm out of date, but there must be some manual as well as automatic protection I would think.
Yes it would be ice at FL390, but Sirius clouds at that altitude should pose no problem. Temperatures of -40c and below do not need engine anti-ice.
Flying through the top of a CB (TRW), that's looking for trouble. Moisture, in the form of ice crystals is a small problem to be avoided, but the presence of hail would be very dangerous. Turbulence could be as big a problem for the engines since that could cause an interruption of airflow and a compressor stall in that skinny air.
12 km is about 39,000
Since the last planes I flew (767) had manual ignition I guess I'm out of date, but there must be some manual as well as automatic protection I would think.
Yes it would be ice at FL390, but Sirius clouds at that altitude should pose no problem. Temperatures of -40c and below do not need engine anti-ice.
Flying through the top of a CB (TRW), that's looking for trouble. Moisture, in the form of ice crystals is a small problem to be avoided, but the presence of hail would be very dangerous. Turbulence could be as big a problem for the engines since that could cause an interruption of airflow and a compressor stall in that skinny air.
12 km is about 39,000