Mr Spaceman From Canada, joined Mar 2001, 2787 posts, RR: 8
Reply 2, posted (13 years 8 months 3 weeks 2 days 17 hours ago) and read 1033 times:
I'm not an airline pilot, however just like Iainhol and I have to do when taxiing a small aircraft into position on the runway, I'm sure the Big guys just simply roll the aircraft forward a few feet along the center line untill she looks straight.
General Aviation pilots use rudder pedals to steer with while taxiing, and airliners use a small "Tiller" wheel (steering wheel) to steer. This tiller wheel is located on the left seat pilot's left side pannel.
Who knows...maybe these small tiller wheels are marked, to indicate to the pilot when the nosewheels are pointed straight. However, that won't nessesarily mean that the aircraft is.
NKP S2 From United States of America, joined Dec 1999, 1714 posts, RR: 5
Reply 4, posted (13 years 8 months 3 weeks 2 days 6 hours ago) and read 986 times:
Most tillers for N/W steeering have marks to indicate center...but, as the center position has a slight detent that can be felt when the metering valve is centered, whether by artificial feel ( "steer by wire" ) or the tactile feel of the metering valve through cable runs. The N/W steering will tend to try to center anyhow when the tiller is let go...although the speed and load on the nosegear can affect how good or fast it does self-center. The way we were taught to judge the centerline of a taxiway is to "put your a$$ squarely over the line". It works.
Air2gxs From , joined Dec 1969, posts, RR:
Reply 7, posted (13 years 8 months 3 weeks 8 hours ago) and read 953 times:
When transport catergory aircraft such as the 747 pictured in you post extends the gear it is already centered. There is a self centering cam internal to nose gear strut designed to bring the lower strut/piston assy. in line with the centerline of the aircraft. Wjat you are probably witnessing in the picture is a crosswind landing in which the pilot has not yet fully corrected for by the time the nose gear hit the runway.
Just as a note, there is limited nose wheel steering capability built into the rudder pedals (typically 7 degrees either side of center) for high speed usage.