Originally Posted by
2StgTurbine
Aircraft are tested for flight into known icing, not taxing into known icing. Snow and ice can build up on the top of a fuselage when the aircraft is on the ground, but a fuselage will not pick up that much ice when the aircraft is in flight. If you really think wings are the only things that matter aerodynamically, then I guess aircraft designers should just stop wind tunnel testing the entire airplane and just worry about the wings. Also, the weight of ice is another factor.
People working the anti-ice guns are trained not to spray APU intakes and our job is not to worry about the life of an APU. And ear drums are not a factor either. ERJ have been doing unpressurized departures for years. If you wait to turn the packs on until 10,000 feet, then that will be an issue, but turning them on just after takeoff really isn't that different than turning them on after closing the cabin door.
Sounds like you fly an erj. In our crj we don't simply push two pack buttons back on after takeoff.
The specialist that spray the airplanes also shoot it directly into the apu, and depending on the station fail to remove any ice all together! As has been the case every ice season at least once with a memo that followed.
Very familiar with aerodynamics, thrust, parasitic drag, and critical surfaces. I'm also well versed in common sense and practicality.