CRJ nose wheel steering

[TheBaron]

Can anybody tell me if a CRJ has a tiller or is the nws strictly through the rudder pedals. Does the co-pilot seat have the same steering authority as the left seat?

 

[flyf15]

Tiller, captain's side only. Roughly 70 degrees of steering available.

Rudder pedals both sides have roughly 7 degrees of nosewheel steering. Enough to keep it straight on the taxiway / runway and turn off on a high-speed exit, but thats about it...

 

[TheBaron]

Thanks for the info.

:beer:

 

[rightseatjocky]

If you are wanting what the tiller does on the 50 seater. It is steer by wire, sending signals to the ecu (Electronic Control Unit) which in turn sends your imputs to the steering actuators on the nose wheel and you get 70 degrees per the tiller. If you want to use your feet then you keep your hand off the tiller and up to 7 degrees only. If you do both and go further than 5 degrees on your feet and you use the tiller you will (usually get) the steering inop caution.
I hope that helps

 

[wms]

Sounds like you just had a checkride! Some operators check the NWS on the roll and offset with the tiller.

 

[Papps]

If you are wanting what the tiller does on the 50 seater. It is steer by wire, sending signals to the ecu (Electronic Control Unit) which in turn sends your imputs to the steering actuators on the nose wheel and you get 70 degrees per the tiller. If you want to use your feet then you keep your hand off the tiller and up to 7 degrees only. If you do both and go further than 5 degrees on your feet and you use the tiller you will (usually get) the steering inop caution.
I hope that helps

Technically thats incorrect.... The Tiller is connected to a series of cables and pulleys, when you turn left, the pulleys open a valve that releases a metal ball. That ball slides down a track and falls into a cup, that cup is attached to a scale, when that scale tips a lit match burns through a string and releases a weight. That weight falls on a lever, and through a system of gears the nose wheel is turned up to 70 degrees.

Its a fairly straight forward system, i don't know how people keep screwing it up.

 

[Bernoulli]

Technically thats incorrect.... The Tiller is connected to a series of cables and pulleys, when you turn left, the pulleys open a valve that releases a metal ball. That ball slides down a track and falls into a cup, that cup is attached to a scale, when that scale tips a lit match burns through a string and releases a weight. That weight falls on a lever, and through a system of gears the nose wheel is turned up to 70 degrees.

Its a fairly straight forward system, i don't know how people keep screwing it up.

LOL on that one...classic.

 

[Stifler's Mom]

Technically thats incorrect.... The Tiller is connected to a series of cables and pulleys, when you turn left, the pulleys open a valve that releases a metal ball. That ball slides down a track and falls into a cup, that cup is attached to a scale, when that scale tips a lit match burns through a string and releases a weight. That weight falls on a lever, and through a system of gears the nose wheel is turned up to 70 degrees.

Its a fairly straight forward system, i don't know how people keep screwing it up.

Sad thing is, I was right with you on that until I read "metal ball". Then I started to question your post. I better start reading the POH again. :blush:

 

[Papps]

Sad thing is, I was right with you on that until I read "metal ball". Then I started to question your post. I better start reading the POH again. :blush:

actually i probably should too, because i think there is a mouse running on a treadmill somewhere in that system, but its been a while since my last checkride.

 

[MEL'ed]

Saw a CRJ attempt a 180 degree turn on AA taxiway yesterday in LGA. Didn't turn too far before he decided that wasn't gonna happen. Said the nosewheel steering kept going off. First question, after a certain number of degrees, does the NWS go into free caster mode? Second, is it possible to do a 180 turn on AA in LGA with a 50 seat CRJ? I don't know the width of the taxiway, but what does it take to do a 180?

 

[flyf15]

what does it take to do a 180?

75 feet is the minimum. But, you'd have to perfectly do everything and those wheels would be way too close to the pavement edges for me to be sufficiently comfortable.

 

[wms]

I'm too embarrassed say how I know, but the CRJ can do a 180 on less than 75 feet.:0

 

[Stifler's Mom]

I'm too embarrassed say how I know, but the CRJ can do a 180 on less than 75 feet.:0

Locking up the mains to do it doesn't count though. :smash:

 

[nethan]

On the -200 the nose ends up right about where the wings are when you turn it. Granted, thats just be observing the auto taxi feature in action, but it seems pretty close.

The worst time to have the NWS die has got to be either trying to make a highspeed or right at the bottom end of the US Express parking spot at DCA.

 

[Stifler's Mom]

Maybe we can get InstructorDude to run this scenario on his Microsoft Flight Sim program?

 

[TheBaron]

Thanks for all the great info. I especially appreciated the technically astute description given by Papps.


:laugh: