Tom12
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'Triller' ... What Is It Used For?

Thu Dec 28, 2006 9:51 am

Hey All,

I was looking through the DB and came across an Air France 777 cockpit shot. The F/O has his hand on a 'Triller' /... i'm sure it said Triller below it.

http://www.airliners.net/open.file/0412426/L/

Anyone know what it is used for?

Thanks, Tom

(Edit: Link)

[Edited 2006-12-28 01:52:48]
"Per noctem volamus" - Royal Air Force Bomber Squadron IX
 
2H4
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RE: 'Triller' ... What Is It Used For?

Thu Dec 28, 2006 9:53 am



I think it's a misprint. The tiller is used to steer the aircraft on the ground...


2H4


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Tom12
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RE: 'Triller' ... What Is It Used For?

Thu Dec 28, 2006 9:58 am

Quoting 2H4 (Reply 1):

Probably did say Tiller, would have been my fault. Sorry.

Thanks for letting me know  Smile

Tom
"Per noctem volamus" - Royal Air Force Bomber Squadron IX
 
SlamClick
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RE: 'Triller' ... What Is It Used For?

Thu Dec 28, 2006 9:58 am

Quoting 2H4 (Reply 1):
The tiller is used to steer the aircraft on the ground...

Or a boat upon the water.
Happiness is not seeing another trite Ste. Maarten photo all week long.
 
2H4
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RE: 'Triller' ... What Is It Used For?

Thu Dec 28, 2006 10:01 am



If you find the error, let me know, and I'll fix it.  Smile


2H4


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MD11Fanatic
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RE: 'Triller' ... What Is It Used For?

Thu Dec 28, 2006 11:00 am

I thought the captain always taxiied the aircraft?
 
ATCme
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RE: 'Triller' ... What Is It Used For?

Thu Dec 28, 2006 11:21 am

Quoting 2H4 (Reply 4):
If you find the error, let me know, and I'll fix it.

Wow, thats nice, but its just the label below the tiller in the pic and not the comment. BTW, the correct pic is up there now.

ATCme

[Edited 2006-12-28 03:21:42]
I'm from the FAA, and I'm here to help. Really. Yes I'm serious, I'm here to help you.
 
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Starlionblue
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RE: 'Triller' ... What Is It Used For?

Thu Dec 28, 2006 11:46 am

Quoting MD11Fanatic (Reply 5):
I thought the captain always taxiied the aircraft?

Not necessarily. This depends on:
- Whether the F/O has a tiller. On smaller aircraft there may be only one tiller. For example, the DC-9 (including the -80 marks) has only a Captain's side tiller.
- Company policy on whether the F/O may taxi.
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
 
vikkyvik
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RE: 'Triller' ... What Is It Used For?

Thu Dec 28, 2006 11:47 am

Quoting MD11Fanatic (Reply 5):
I thought the captain always taxiied the aircraft?

Believe it depends on various airline SOP's.

Some airlines order their aircraft with a tiller only on the captain's side. Other airlines order aircraft with tillers on both sides.

At least, that's my understanding

~Vik

EDIT: Ahhhh, beaten by Starlion by 25 seconds. That's really not fair  Wink

[Edited 2006-12-28 03:48:04]
I'm watching Jeopardy. The category is worst Madonna songs. "This one from 1987 is terrible".
 
SlamClick
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RE: 'Triller' ... What Is It Used For?

Thu Dec 28, 2006 11:48 am

Quoting MD11Fanatic (Reply 5):
I thought the captain always taxiied the aircraft?

All airliners can be steered to certain limits with the pedals.

Beyond that most airliners now made have the option of steering tillers on both sides. At some companies the f/o is allowed to taxi.
Happiness is not seeing another trite Ste. Maarten photo all week long.
 
flametech21
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RE: 'Triller' ... What Is It Used For?

Thu Dec 28, 2006 2:41 pm

Quoting SlamClick (Reply 9):
At some companies the f/o is allowed to taxi.

We alternate every leg. The PF is always the one who taxis per our SOP's.
They build them to a higher standard at Long Beach!
 
Valcory
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RE: 'Triller' ... What Is It Used For?

Thu Dec 28, 2006 3:36 pm

Quoting Tom12 (Thread starter):
I was looking through the DB and came across an Air France 777 cockpit shot. The F/O has his hand on a 'Triller' /... i'm sure it said Triller below it.

The tiller is use for nose wheel steering you can also use the rudder pedals (but the nose wheel does not turn that much). When i taxi i use the rudder pedal to keep the airplane straight when i am turning i use the tiller.I also like using the engines to help also if i am turning left i increase the power of the engine on the right the airplane just seems to turn easier.
 
744rules
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RE: 'Triller' ... What Is It Used For?

Thu Dec 28, 2006 9:38 pm

note that automated docking systems are calibrated on the left hand seater. I suppose that when f/o is taxiing in, he'll get instructions from the captain.
 
AJ
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RE: 'Triller' ... What Is It Used For?

Thu Dec 28, 2006 10:01 pm

Quoting 744rules (Reply 12):
note that automated docking systems are calibrated on the left hand seater. I suppose that when f/o is taxiing in, he'll get instructions from the captain

The new laser NIGS appearing around the world use aircraft geometry not the Captain's eyeline for guidance so either pilot may use it. Our company policy is still for the Captain to park the aircraft, even under hand marshall. Normally the FO will hand over once aligned with the gate.
 
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HAWK21M
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RE: 'Triller' ... What Is It Used For?

Thu Dec 28, 2006 10:04 pm

Tiller as in Steering Wheel.Some Aircraft have the option from the RH seat too depending on the type.

regds
MEL
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zenarcade
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RE: 'Triller' ... What Is It Used For?

Fri Dec 29, 2006 3:48 am

Is the tiller system all hydraulic with "power steering", or is it by wire somehow? I can't imagine there not being some sort of power assist, imagine the elbow grease it would take to steer!

I tried searching for an answer but none could be found.
If a plane falls on the tarmac and no one is there, does it make any sound? - Starlionblue
 
Valcory
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RE: 'Triller' ... What Is It Used For?

Fri Dec 29, 2006 8:09 am

Quoting Zenarcade (Reply 15):
Is the tiller system all hydraulic with "power steering", or is it by wire somehow? I can't imagine there not being some sort of power assist, imagine the elbow grease it would take to steer!

This is for a 757/767 you have hydraulics and cables.Whether the nose steering is from tiller or rudder system.The command signal is transmitted by cables to a hydraulic metering valve located on the nose gear.The metering valves(you can put it in bypass to stop hydraulics going to the acuators usually done when towing the airplane push back etc) direct hydaulic pressure to two steering acuators to steer bose wheel.They are quite a few things involve in nose wheel steering.Two sets of control cables(tiller+piston position) two steering actuators,steering collar,steering metering valve summing mechanism and broken cable compensator,rudder pedal steering interconnect mechanism,torque limiter and a steering tiller.I have had to rig a nose steering system and they are a pain not a job i usually volunteer for.
 
Valcory
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RE: 'Triller' ... What Is It Used For?

Fri Dec 29, 2006 8:13 am

Quoting Valcory (Reply 16):
bose wheel

typo meant nose wheel probly thinking about the bose system in my car
 
highflyer9790
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RE: 'Triller' ... What Is It Used For?

Fri Dec 29, 2006 8:33 am

heres a question:

ive always wondered how many rotations it takes from the tiller to make a hard turn with the nosewheel at maybe 70 or 80 degrees. or does it not work that way? just a simple turn to the 9 o'clock position is full left and 3 o'clock full right?

thanks
highflyer
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AJ
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RE: 'Triller' ... What Is It Used For?

Fri Dec 29, 2006 9:24 am

Quoting HighFlyer9790 (Reply 18):
ive always wondered how many rotations it takes from the tiller to make a hard turn with the nosewheel at maybe 70 or 80 degrees. or does it not work that way? just a simple turn to the 9 o'clock position is full left and 3 o'clock full right?

From the 767 manual:
Nose Wheel Steering Tiller
Rotate -
- turns the nose wheels up to 65 degrees in either direction
- overrides rudder pedal steering

The tiller simply goes 90 degrees (approx) left and right for full lock. Letting it go during a turn can floor every standing FA in the aircraft so the tiller must be held in the required position when out of centre.

The rudder pedals give 7 degrees of nose wheel steering, which is fine for taxying on straight runs, taxing rapid exit/high speed taxyways nd during most takeoff runs.

Cheers!
 
highflyer9790
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RE: 'Triller' ... What Is It Used For?

Fri Dec 29, 2006 12:01 pm

Quoting AJ (Reply 19):
The rudder pedals give 7 degrees of nose wheel steering, which is fine for taxying on straight runs,

i thought the rudder steering only became operative after 60kts?
121
 
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HAWK21M
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RE: 'Triller' ... What Is It Used For?

Fri Dec 29, 2006 12:54 pm

Quoting HighFlyer9790 (Reply 20):
i thought the rudder steering only became operative after 60kts

On the B757.The Rudder Steering Control mechanism functions on NLG on Ground position.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
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Starlionblue
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RE: 'Triller' ... What Is It Used For?

Fri Dec 29, 2006 1:51 pm

Quoting HighFlyer9790 (Reply 20):
i thought the rudder steering only became operative after 60kts?

You mean pedal steering I think and this depends on the aircraft.

For example, on the DC-9 (into the -80 marks) the pedals do not control the nose wheel, so all you get is rudder control, and that is ineffective under around 60 knots.

On other aircraft, such as 757, 767, 330/340, 747 etc the pedals control the rudder and also provide limited (normally around 5-7 degrees) control over the nose gear. This is effective at all speeds.
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
 
2H4
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RE: 'Triller' ... What Is It Used For?

Fri Dec 29, 2006 1:58 pm



Useless fact of the day:

The Mooney M-20R Ovation's nosewheel can steer thirteen degrees to the right, but only eleven degrees to the left. This equates to an eight foot difference in minimum turning radius, and is a good thing to know when maneuvering on the ground.  Smile


2H4


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HAWK21M
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RE: 'Triller' ... What Is It Used For?

Fri Dec 29, 2006 11:28 pm

Quoting 2H4 (Reply 23):
can steer thirteen degrees to the right, but only eleven degrees to the left.

What causes this.
regds
MEL
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2H4
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RE: 'Triller' ... What Is It Used For?

Fri Dec 29, 2006 11:45 pm




Quoting HAWK21M (Reply 24):
What causes this.

Unless I'm mistaken, it's a result of the nose gear being mounted slightly off-center, to allow the single-sided gear to fully retract into the relatively narrow compartment:








2H4


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