futureuapilot
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KLM MD-11 Gear And Roof Questions

Sun May 08, 2005 6:20 am

Hey, what's the little thing sticking out horizontally tward the nose in this picture? Is it supposed to be there? Also, what causes those black streaks on the roof by the windows and door? Thanks!


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Photo © Florian Kondziela



-Sam

[Edited 2005-05-07 23:25:34]
The Pilot is the highest form of life on Earth!
 
EMBQA
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RE: Thing Sticking Out Of The Strut.

Sun May 08, 2005 6:24 am

Nose Steering Actuator....If you'd look, nearly every single aircarft with nose steering has a design simular to it.

The black streaks are caused by dirt and the airflow over the fuselage.

[Edited 2005-05-07 23:31:50]
"It's not the size of the dog in the fight, but the size of the fight in the dog"
 
futureuapilot
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RE: KLM MD-11 Gear And Roof Questions

Sun May 08, 2005 6:47 am

Quoting EMBQA (Reply 1):
If you'd look, nearly every single aircarft with nose steering has a design simular to it

When I had a chance to walk around a CO 777 i didn't see that little thing, was i just blind? What does the Nose Steering Actuator do?

-Sam
The Pilot is the highest form of life on Earth!
 
EMBQA
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RE: KLM MD-11 Gear And Roof Questions

Sun May 08, 2005 6:52 am

Nose...Steering...Actuator...

It steers the airplane through moving the nose wheels....hence the name.
"It's not the size of the dog in the fight, but the size of the fight in the dog"
 
Klaus
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RE: KLM MD-11 Gear And Roof Questions

Sun May 08, 2005 6:53 am

The steering actuator normally consists of a pair of hydraulic cylinders which turn the nose wheels into the desired direction. In most cases I´ve seen pictures of, the cylinders are mounted behind the strut, however.
 
EMBQA
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RE: KLM MD-11 Gear And Roof Questions

Sun May 08, 2005 6:56 am

Your just blind......although a slightly different design, the actuators are clearly visable on the Boeing 777.
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Photo © Rhys Dudley - TeamJetspotter



[Edited 2005-05-08 00:00:51]
"It's not the size of the dog in the fight, but the size of the fight in the dog"
 
futureuapilot
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RE: KLM MD-11 Gear And Roof Questions

Sun May 08, 2005 7:52 am

Ah, ok, thanks.. I see it now.  Yeah sure

Quoting EMBQA (Reply 3):
Nose...Steering...Actuator...

It steers the airplane through moving the nose wheels....hence the name.

Sorry, Actuator is a new term, English isn't my native language...

-Sam
The Pilot is the highest form of life on Earth!
 
amtrosie
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RE: KLM MD-11 Gear And Roof Questions

Sun May 08, 2005 12:01 pm

The black streaks are a combination of dirt/water that is forced out of various crevases when the A/C is pressurized. It is also a good indication of a presurization leak, however small.
 
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HAWK21M
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RE: KLM MD-11 Gear And Roof Questions

Sun May 08, 2005 6:22 pm

Nose Wheel Steering Actuators.

The Black streaks are caused by Dirt flowing over the Aircraft.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
helsin99
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RE: KLM MD-11 Gear And Roof Questions

Mon May 09, 2005 10:22 am

On the first picture of the KLM MD-11, does anyone have any ideas about what that hatch that appears to be open under the first window in the passenger compartment is or does? Is that the valve that release cabin pressure?
 
EMBQA
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RE: KLM MD-11 Gear And Roof Questions

Mon May 09, 2005 11:28 am

If I remember correctly it's an outflow for the ACM Packs. Notice the two inlets on the forward side of the nose.
"It's not the size of the dog in the fight, but the size of the fight in the dog"
 
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HAWK21M
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RE: KLM MD-11 Gear And Roof Questions

Mon May 09, 2005 2:38 pm

Quoting Helsin99 (Reply 9):
On the first picture of the KLM MD-11, does anyone have any ideas about what that hatch that appears to be open under the first window in the passenger compartment is or does

Are you referring to the Landing Light.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
MD11Engineer
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RE: KLM MD-11 Gear And Roof Questions

Mon May 09, 2005 7:54 pm

Quoting HAWK21M (Reply 11):
On the first picture of the KLM MD-11, does anyone have any ideas about what that hatch that appears to be open under the first window in the passenger compartment is or does

It is a retractable landing light in the extended position. The thingies sticking out from the NLG are the two steering actuators and two small glide path antennas below them. The things pointing foward under the nose are the three pitot tubes.

Jan
Je Suis Charlie et je suis Ahmet aussi
 
helsin99
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RE: KLM MD-11 Gear And Roof Questions

Tue May 10, 2005 12:16 pm

Thanks for the information. Now that I look at it again, I can see that it is a light. I didn't know that they retracted. That's what I like about this forum, always learn something new.

h99
 
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HAWK21M
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RE: KLM MD-11 Gear And Roof Questions

Tue May 10, 2005 6:00 pm

What are the Marking in Black for.
Near the AOA sensor & beow the Entry door.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
MD11Engineer
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RE: KLM MD-11 Gear And Roof Questions

Tue May 10, 2005 8:50 pm

Quoting HAWK21M (Reply 14):
What are the Marking in Black for.
Near the AOA sensor & beow the Entry door.
regds
MEL

We don´t have them on our freighters, but I assume KLM put them there as a guidance for the airstairs / jetway operator.

Jan
Je Suis Charlie et je suis Ahmet aussi
 
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HAWK21M
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RE: KLM MD-11 Gear And Roof Questions

Wed May 11, 2005 5:43 pm

Seen the same markings in Orange on the New 9W A343 yesterday.
Any Idea how is the refrencing done.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
MD11Engineer
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RE: KLM MD-11 Gear And Roof Questions

Wed May 11, 2005 9:06 pm

I assume that they are used by operators of airsairs which are mounted on a truck. From their cab they can´t see the door opening if the stairs is close, so they´ll orient themselves by the markings.

Jan
Je Suis Charlie et je suis Ahmet aussi

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