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

"Kerryn Offord" wrote in message
...
Arved Sandstrom wrote:
"Mike" wrote in message
ups.com...
Inside the Navy
MARINE CORPS TEAM PREPARES MV-22 OSPREY FOR HARMFUL DUST IN IRAQ
Date: June 25, 2007
[ SNIP ]

http://www.military.com/NewContent/0...h_0904,00.html
http://www.popasmoke.com/notam2/show...91c86& t=6185

I am a bit skeptical of the ac, but let's see what it does.

AHS

"The MV-22 Osprey is a very capable medium-lift military transport
aircraft the Marine Corps has needed for a long time. It is twice as fast,
can carry three times as much, and goes six times farther than the CH-46E,
the aircraft it is replacing."

http://en.wikipedia.org/wiki/V-22_Os...ons_.28V-22.29
Capacity: MV-22-24 troops; CV-22-24 troops (seated), 32 troops (floor
loaded) or 10,000 pounds of cargo
# Maximum speed: MV-22-275 knots; CV-22-277 knots (316 mph, 509 km/h)
# Cruise speed: 214 knots (246 mph, 396 km/h) at sea level
# Combat radius: 370 nm (430 mi, 690 km)
# Ferry range: 2,417 nm (2,781 mi, 4,476 km)
# Unrefueled range: 879 nm (1,011 mi, 1,627 km)
# Empty weight: 33,140 lb (15,032 kg)
# Loaded weight: 47,500 lb (21,500 kg)
# Max takeoff weight: 60,500 lb (27,400 kg)

http://en.wikipedia.org/wiki/CH-46E#..._Sea_Knight.29
Capacity: 25 troops
# Maximum speed: 165 mph (143 knots; 265 km/h)
# Combat radius: 184 mi (160 nm, 296 km)
# Ferry range: 420 mi (360 nm, 676 km)
# Service ceiling: 14,000 ft (4,300 m)
# Empty weight: 15,537 lb (7,047 kg)
# Loaded weight: 17,396 lb (7,891 kg)
# Max takeoff weight: 24,300 lb (11,000 kg)

Twice as fast.. close enough
three times as much? 25 men vs 32.. Nope. Cargo? loaded - empty = V-22 @
~6,000 pounds, CH-46 ~ 2000 pounds.. So in the cargo role, yes.. In the
troop landing role, (@ max take off - 8763 lb (CH-46) vs 27360 lb V-22 ..
~3 times..
6 times farther... Combat radius 370 nm vs 184.. Call it twice the
distance... ferry range.. 2417 vs 420 nm ~ 6 times..

Very selective choice of statistics...

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

Marines hate uncertainty more than they fear failure. It is time for the
V-22 to step up.

On Jun 30, 9:20 pm, "CarpATM" wrote:
"Kerryn Offord" wrote in message

...



Arved Sandstrom wrote:
"Mike" wrote in message
roups.com...
Inside the Navy
MARINE CORPS TEAM PREPARES MV-22 OSPREY FOR HARMFUL DUST IN IRAQ
Date: June 25, 2007
[ SNIP ]

http://www.military.com/NewContent/0...h_0904,00.html
http://www.popasmoke.com/notam2/show...04a46c54febcb0...

I am a bit skeptical of the ac, but let's see what it does.

AHS

"The MV-22 Osprey is a very capable medium-lift military transport
aircraft the Marine Corps has needed for a long time. It is twice as fast,
can carry three times as much, and goes six times farther than the CH-46E,
the aircraft it is replacing."

http://en.wikipedia.org/wiki/V-22_Os...ons_.28V-22.29
Capacity: MV-22-24 troops; CV-22-24 troops (seated), 32 troops (floor
loaded) or 10,000 pounds of cargo
# Maximum speed: MV-22-275 knots; CV-22-277 knots (316 mph, 509 km/h)
# Cruise speed: 214 knots (246 mph, 396 km/h) at sea level
# Combat radius: 370 nm (430 mi, 690 km)
# Ferry range: 2,417 nm (2,781 mi, 4,476 km)
# Unrefueled range: 879 nm (1,011 mi, 1,627 km)
# Empty weight: 33,140 lb (15,032 kg)
# Loaded weight: 47,500 lb (21,500 kg)
# Max takeoff weight: 60,500 lb (27,400 kg)

http://en.wikipedia.org/wiki/CH-46E#...H-46_Sea_Knigh...
Capacity: 25 troops
# Maximum speed: 165 mph (143 knots; 265 km/h)
# Combat radius: 184 mi (160 nm, 296 km)
# Ferry range: 420 mi (360 nm, 676 km)
# Service ceiling: 14,000 ft (4,300 m)
# Empty weight: 15,537 lb (7,047 kg)
# Loaded weight: 17,396 lb (7,891 kg)
# Max takeoff weight: 24,300 lb (11,000 kg)

Twice as fast.. close enough
three times as much? 25 men vs 32.. Nope. Cargo? loaded - empty = V-22 @
~6,000 pounds, CH-46 ~ 2000 pounds.. So in the cargo role, yes.. In the
troop landing role, (@ max take off - 8763 lb (CH-46) vs 27360 lb V-22 ..
~3 times..
6 times farther... Combat radius 370 nm vs 184.. Call it twice the
distance... ferry range.. 2417 vs 420 nm ~ 6 times..

Very selective choice of statistics...

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

Marines hate uncertainty more than they fear failure. It is time for the
V-22 to step up.





The Resistance will be knocking those ****ers out of the air in no
time.








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- Show quoted text -

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?

--
Harry Andreas
Engineering raconteur

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...

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

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

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

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

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...

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