jetcareers - View Single Post - "hand flying" boeing and airbus aircraft......

seagull · December 30th, 2007, 14:12

The control law for the Airbus FBW (does not apply to the conventional controlled A300/310), is C*, which is the same law that Boeing, Lockheed and MD use on most of their airplanes. The 777 uses C*U, which is the exact same thing, except that you have to trim it in pitch, for some inane reason.

The control law, in normal law, is a rate command, so a neutral input will hold a constant bank angle (or level), and will automatically correct for any changes in rate. This can lead to a PIO if the pilot is attempting to correct for things when "hand flying".

December 30th, 2007, 14:12	#10
seagull Old Skool Join Date: Sep 2001 Posts: 2,044	Re: "hand flying" boeing and airbus aircraft...... The control law for the Airbus FBW (does not apply to the conventional controlled A300/310), is C, which is the same law that Boeing, Lockheed and MD use on most of their airplanes. The 777 uses CU, which is the exact same thing, except that you have to trim it in pitch, for some inane reason. The control law, in normal law, is a rate command, so a neutral input will hold a constant bank angle (or level), and will automatically correct for any changes in rate. This can lead to a PIO if the pilot is attempting to correct for things when "hand flying".