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varig767
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What's This Thing Near The Nosewheel?

Thu Jul 20, 2006 7:42 pm


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It looks to me, when this plane is about to land it causes some sparks when that thing near the nosewheel hits the runway??

Can anyone tell me more about it?

regards, Martijn
 
greasespot
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RE: What's This Thing Near The Nosewheel?

Thu Jul 20, 2006 7:54 pm

It is part of the gravle deflector kit. Allows the aircraft to land on grabel. Forces any gravel kicked up by the nose gear to be deflected away from the engines. The booms at the bottom of the engine are there for the same reason as well...

GS
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boeingfixer
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RE: What's This Thing Near The Nosewheel?

Thu Jul 20, 2006 7:57 pm

That's part of the gravel kit. It's a nose wheel gravel deflector and also includes engine gravel protection via the booms extending in front of both engines. The booms route 13th stage bleed air trough several ports at the tip to break up any inlet vortex that tends to suck up debris from the runway at high power. The purpose of the gravel kit is to protect the belly and engines from damage when operating from gravel runways.

Cheers,

John
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HAWK21M
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RE: What's This Thing Near The Nosewheel?

Fri Aug 29, 2008 3:15 pm

Just wondering why wasn't the NLG gravel deflector used for the NGs ever.
regds
MEL
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SlamClick
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RE: What's This Thing Near The Nosewheel?

Fri Aug 29, 2008 3:46 pm



Quoting HAWK21M (Reply 3):
Just wondering why wasn't the NLG gravel deflector used for the NGs ever

It is part of a gravel runway kit that includes vortex interrupers seen in that photo below each engine intake. As far as I know such an option was never available for any but the -200.
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HAWK21M
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RE: What's This Thing Near The Nosewheel?

Fri Aug 29, 2008 4:26 pm



Quoting SlamClick (Reply 4):
It is part of a gravel runway kit that includes vortex interrupers seen in that photo below each engine intake. As far as I know such an option was never available for any but the -200.

True.But not considering the Intake vortex dissipater for the JT8D,but the NLG gravel deflector.
Wasn't the B737NG considered for rough runway ops ever.

regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
SlamClick
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RE: What's This Thing Near The Nosewheel?

Fri Aug 29, 2008 4:36 pm



Quoting HAWK21M (Reply 5):
Intake vortex dissipater for the JT8D

Something like that would be required for any engine. They all suck hard enough to pick up gravel etc.

I'm sure they were 'considered' but frankly the demand for such capabilities is pretty low. Not even Alaska Airlines has a gravel strip on their "R" airports anymore. They might still have the capability to fly to Red Dog Mine as a charter but there is just not much demand for such things.

That's why we have Caribous and L-382s in service.
Happiness is not seeing another trite Ste. Maarten photo all week long.
 
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HAWK21M
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RE: What's This Thing Near The Nosewheel?

Fri Aug 29, 2008 4:50 pm



Quoting SlamClick (Reply 6):
Something like that would be required for any engine. They all suck hard enough to pick up gravel etc.

True the Difference could be Low bypass 1:1 is suseptable to more serios damage requiring Shop visit rather than High bypass of 5:1 of the CFM7 series.

You are correct that the Improvements in landing strips worldwide would not find takers for the added weight.
regds
MEL
I may not win often, but I damn well never lose!!! ;)

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