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Burning Question (737)



 
 
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  #1  
Old October 4th 03, 05:28 PM
Zomby Woof
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Default Burning Question (737)

Why is it, in all the pictures I've ever seen of any version of the 737,
that Boeing STILL doesn't cover up the main wheels?

Maybe the latest model (-800?) does...if so, I stand corrected.

ZW



  #2  
Old October 5th 03, 04:41 AM
Csa751
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If it ain't broke, why fix it?
  #3  
Old October 5th 03, 08:21 AM
John Hilt
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On 05 Oct 2003 03:41:06 GMT Csa751 wrote:

If it ain't broke, why fix it?


It may be broke, but never admit it:

http://www.pulitzer.org/year/1997/beat-reporting/works/737-4/

When jets crash: How Boeing fights to limit liability

The potential costs to a manufacturer are enormous if its product is
blamed for deaths and injuries: millions of dollars to victims and their
families, many millions more if a product must be recalled and fixed,
and the incalculable cost of a damaged reputation.
_______________________________________

Say no more ...

--
_/_/_/ -=jh=-

  #4  
Old October 6th 03, 03:38 AM
CSA722
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All that because they don't want to put gear doors on where they're not needed?
  #5  
Old October 6th 03, 04:15 AM
Zomby Woof
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Then why bother putting gears doors on ANY aircraft?

What singles out the 737?

ZW



"CSA722" wrote in message
...
All that because they don't want to put gear doors on where they're not

needed?


  #6  
Old October 6th 03, 08:11 AM
Csa751
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What difference does it make? It works. Many older recip aircraft didn't have
doors that completely covered the gear. The 737 is just the only jet. (that I
know of). It allows more useable space above the gear wells and is lighter. The
increase in drag doesn't appear to have affected it's performance enough to
matter to the hundreds of operators and there's several less parts to cause
trouble, cost money and decrease reliability. Sounds like a win win situation.
  #7  
Old October 6th 03, 01:54 PM
Robert Moore
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"Zomby Woof" wrote
What singles out the 737?


Although my experience is only in B-707 and B-727 aircraft, one
of the problems that I encountered when doing short-haul operations
in them, was that of brake over-heating. A problem that was
addressed in the Aircraft Operating Manuals and was dealt with by
leaving or putting the gear down longer than normal. Since the
B-737 was intended solely for these types of operations involving
frequent TO and LDGS, short turn-around times and long taxi routes,
perhaps Boeing felt that leaving the wheels uncovered would assist
in the brake cooling problem.

Bob Moore
ATP B-707 B-727
PanAm (retired)
  #8  
Old October 7th 03, 07:29 AM
Larry Fransson
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On 2003-10-05 20:15:11 -0700, Zomby Woof said:

?Then why bother putting gears doors on ANY aircraft?

What singles out the 737?


Nothing. The straight wing Citations don't have fully enclosed landing gear either.

  #9  
Old October 7th 03, 12:14 PM
John Hilt
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On Mon, 06 Oct 2003 12:54:09 GMT Robert Moore wrote:

Since the
B-737 was intended solely for these types of operations involving
frequent TO and LDGS, short turn-around times and long taxi routes,
perhaps Boeing felt that leaving the wheels uncovered would assist
in the brake cooling problem.


I don't think so. There's plenty of time for brake cooling during turn
around and the following flight and approach. Just put your hand into a
200 - 270 knots air flow and feel it. :-)

Brake temperature is only critical just after landing. That's why
the wheels hubs on a Concorde are equipped with fans that run during
ground stops. Not exactly a short hop aircraft.

--
_/_/_/ -=jh=-

  #10  
Old October 7th 03, 02:46 PM
Robert Moore
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John Hilt wrote
Brake temperature is only critical just after landing. That's
why the wheels hubs on a Concorde are equipped with fans that
run during ground stops. Not exactly a short hop aircraft.


From my B-707 Flight Manual:

MAXIMUM LGW FOR SHORT TRANSITS
Takeoff must not be scheduled less than 40 mimutes after
any landing in which the gross weights and operating
conditions critical for wheel fusible plug melting energy
levels have been exceeded. See chart in section.........


Bob Moore
 




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