Saftey of exposed wheel at 41,000 feet

Tom wrote:

Sorry, but the tires on a Citation are inflated to 120 +/- PSI on the nose
wheel and 98 PSI on the mains. They are filled with dry nitrogen.

Which means that, if you took one into outer space, the nose tire would be
essentially at 135 PSI and the mains at 113.

George Patterson
Some people think they hear a call to the priesthood when what they really
hear is a tiny voice whispering "It's indoor work with no heavy lifting".

"G.R. Patterson III" wrote in message
...


Tom wrote:

Sorry, but the tires on a Citation are inflated to 120 +/- PSI on the
nose
wheel and 98 PSI on the mains. They are filled with dry nitrogen.

Which means that, if you took one into outer space, the nose tire would be
essentially at 135 PSI and the mains at 113.

Still the 'ol PITA, eh George?

"Don Tuite" wrote in message
...

I think he's asking about either excess tire pressure bursting the
tire or the tire expanding and getting stuck in the wheel well.


If that's his concern leaving the wheel exposed would make no difference as
wheel wells are not pressurized anyway.

"stephen" wrote in message
m...
Hello,

How safe is Eclipse Aviaion's decision to expose the wheel on jet that
cruises at 41,000 feet?

Has this been done before? On what airplane?

Cessna Citation's have half open wheel bays. They cruise FL410 and up.

B-737 don't have main gear doors either. But I don't know if a 737 can
cruise at FL410.

aptim A&P

"Tom" wrote in message
...

"stephen" wrote in message
m...
Hello,

How safe is Eclipse Aviaion's decision to expose the wheel on jet that
cruises at 41,000 feet?

Has this been done before? On what airplane?

Cessna Citation's have half open wheel bays. They cruise FL410 and up.

"stephen" wrote in message
m...

How safe is Eclipse Aviaion's decision to expose the wheel on jet that
cruises at 41,000 feet?


Perfectly safe. What is your concern?

stephen wrote:
Hello,

How safe is Eclipse Aviaion's decision to expose the wheel on jet that
cruises at 41,000 feet?

Has this been done before? On what airplane?

Safe from what?

If the aircraft isn't supersonic and the wheel wells aren't
heated and pressurized, they are going to see the same environment
whether they are hanging in the breeze or totally enclosed.

--
Jim Pennino

Remove -spam-sux to reply.

Hi,

Very interesting replys. I have no expeience in airplane engineering,
I'm just a curious layman looking at jets; so my question implied
nothing, no need to read deeper into it.

I literally wanted to know if exposing wheels at 41,000 was safe. If
it is, great! Tell me why. I was curious because the only exposed
wheels I've seen were on rickety Cessnas, and never Boeings or
Airbuses.

I was worried that the things would freeze up and mess up the landing,
but aptim pointed out that 737s have exposed wheels too (I've never
noticed that!) so most of my concerns (and those raised on the board)
were taken care of with aptim's that post. Hey, if Boeing does it,
Eclipse can too... It just isn't very reassuring - although sitting in
a 2 ton tube of metal at 41,000...

Thanks.

Link: http://www.airliners.net/open.file/341467/L/


wrote in message ...
stephen wrote:
Hello,

How safe is Eclipse Aviaion's decision to expose the wheel on jet that
cruises at 41,000 feet?

Has this been done before? On what airplane?

Safe from what?

If the aircraft isn't supersonic and the wheel wells aren't
heated and pressurized, they are going to see the same environment
whether they are hanging in the breeze or totally enclosed.

Stephen,

Tell me why.


Tell us why not! We fail to see the problem that you see - so what is
it?

Again, the wheel well, if covered, is not heated at all. Any freezing
that happens to an "exposed" wheel happens to a covered wheel as well.
So what's the difference you see? And what kind of danger do you see
from a wheel with subzero temperature?


--
Thomas Borchert (EDDH)

Hi Thomas,

I wasn't implying that it was unsafe to expose the wheel. I was just
wondering how safe it was. If it's perfectly safe, as the group has
told me, great! I am just a layman on these matters so I would love to
learn more about these things; on a very informal basis obviously...
My first post was vague because I had no idea what
direction/parameters I should set.

Tell us why not! We fail to see the problem that you see - so what is
it?

Seeing the things exposed concerned me; it merely "felt unsafe" - this
is what you get from people who aren't knowledgeable about these
things. I think you can't to see the problem I see because you find an
exposed wheel perfectly natural, whereas I do not.

Best Regards,
Stephen

Thomas Borchert wrote in message ...
Stephen,

Tell me why.


Tell us why not! We fail to see the problem that you see - so what is
it?

Again, the wheel well, if covered, is not heated at all. Any freezing
that happens to an "exposed" wheel happens to a covered wheel as well.
So what's the difference you see? And what kind of danger do you see
from a wheel with subzero temperature?