MARINE CORPS TEAM PREPARES MV-22 OSPREY FOR HARMFUL DUST IN IRAQ

Henry J Cobb wrote:
Kerryn Offord wrote:
Harry Andreas wrote:
In article , "CarpATM"
wrote:

Precision high-performance components mean close tolerances - and
fine Arabic sand is the enemy of close tolerance bearings and fittings.

And this is different from the existing helos, how?

Well.. Most of them can auto-rotate.. while the V-22... can't...

How many existing helos can glide to a landing?

-HJC

essentially all of them

That is what auto rotation means

Vince

On Jul 6, 6:43 am, Vince wrote:
Kerryn Offord wrote:
Harry Andreas wrote:
In article , "CarpATM"
wrote:

Precision high-performance components mean close tolerances - and
fine Arabic sand is the enemy of close tolerance bearings and fittings.

And this is different from the existing helos, how?

Well.. Most of them can auto-rotate.. while the V-22... can't...

it also has a unique 5000 psi hydraulic system. Very finicky

Vince

Anyone want a pool on how soon after arrival in Iraq the first V-22
goes down? Limits are during first flight to no aircraft lost in 60
days.

Jack Linthicum wrote:
On Jul 6, 6:43 am, Vince wrote:
Kerryn Offord wrote:
Harry Andreas wrote:
In article , "CarpATM"
wrote:
Precision high-performance components mean close tolerances - and
fine Arabic sand is the enemy of close tolerance bearings and fittings.
And this is different from the existing helos, how?
Well.. Most of them can auto-rotate.. while the V-22... can't...
it also has a unique 5000 psi hydraulic system. Very finicky

Vince

Anyone want a pool on how soon after arrival in Iraq the first V-22
goes down? Limits are during first flight to no aircraft lost in 60
days.


no

vince

Jack Linthicum wrote:
On Jul 6, 6:43 am, Vince wrote:
Kerryn Offord wrote:
Harry Andreas wrote:
In article , "CarpATM"
wrote:
Precision high-performance components mean close tolerances - and
fine Arabic sand is the enemy of close tolerance bearings and fittings.
And this is different from the existing helos, how?
Well.. Most of them can auto-rotate.. while the V-22... can't...
it also has a unique 5000 psi hydraulic system. Very finicky

Vince

Anyone want a pool on how soon after arrival in Iraq the first V-22
goes down? Limits are during first flight to no aircraft lost in 60
days.


**** you Jack! How about we bet on how soon some one gives you an
"Indian beauty mark"?


--
Heaven is where the police are British, the chefs Italian, the mechanics
German, the lovers French and it is all organized by the Swiss.

Hell is where the police are German, the chefs British, the mechanics
French, the lovers Swiss and it is all organized by Italians.

http://new.photos.yahoo.com/paul1cart/albums/

Vince wrote:
Henry J Cobb wrote:
How many existing helos can glide to a landing?

essentially all of them

That is what auto rotation means

Yes, but how many can do that once they've lost a rotor blade?

-HJC

In article ,
wrote:

Kerryn Offord wrote:
Harry Andreas wrote:
In article , "CarpATM"
wrote:


Precision high-performance components mean close tolerances - and
fine Arabic sand is the enemy of close tolerance bearings and fittings.

And this is different from the existing helos, how?


Well.. Most of them can auto-rotate.. while the V-22... can't...

it also has a unique 5000 psi hydraulic system. Very finicky

Most new a/c have 8000 psi systems.
Why do you think 5000 psi is finicky?

--
Harry Andreas
Engineering raconteur

Henry J Cobb wrote:
Vince wrote:
Henry J Cobb wrote:
How many existing helos can glide to a landing?

essentially all of them

That is what auto rotation means

Yes, but how many can do that once they've lost a rotor blade?

-HJC

about the same number of planes that can glide without a wing

Vince

Harry Andreas wrote:
In article ,
wrote:

Kerryn Offord wrote:
Harry Andreas wrote:
In article , "CarpATM"
wrote:


Precision high-performance components mean close tolerances - and
fine Arabic sand is the enemy of close tolerance bearings and fittings.
And this is different from the existing helos, how?

Well.. Most of them can auto-rotate.. while the V-22... can't...
it also has a unique 5000 psi hydraulic system. Very finicky

Most new a/c have 8000 psi systems.

Which aircraft?


Why do you think 5000 psi is finicky?


Because what the hydraulics do in the V-22 is very complex in a very
constricted environment.


Vince

Henry J Cobb wrote:
Vince wrote:
Henry J Cobb wrote:
How many existing helos can glide to a landing?

essentially all of them

That is what auto rotation means

Yes, but how many can do that once they've lost a rotor blade?

-HJC

The question was looking at the problem of fine dust causing precision
systems to fail.. That's not the same as losing a rotor blade..

Most helicopters (It might even be a design requirement) can auto-rotate
if the engine(s) fail. The V-22 can't...

I doubt any V-22 can land shy of a rotor blade. As for a helicopter.. I
guess it might depend on how many the helicopter had to start with, how
heavy the helicopter and load is...

On Jul 6, 3:57 pm, Kerryn Offord wrote:

As for a helicopter.. I
guess it might depend on how many the helicopter had to start with, how
heavy the helicopter and load is...


No, if a helicopter loses a rotor blade that loss of balance will
destroy the aircraft...

BB

I guess everybody has some mountain to climb.
It's just fate whether you live in Kansas or Tibet...