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#11
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![]() "Paul J. Adam" wrote in message ... In message , Leadfoot writes What I heard was that they had done everything on paper to navalise the AH-64 and then made an offer to the Marines but that was as far as it went, PAPER. The UK Apaches are getting qualified for maritime ops offf HMS Ocean or the CVSs, but that's not full marinisation: rather, detachment as part of a Tailored Air Group for a specific mission. I broke my knee in 1997 which ended my stint both at Boeing Mesa (I was on a contract, not a direct employee) and my crawling around on aircraft. A small batch of UK Apaches were to be built about 6 months to a year later with the rest of the production being done in England. It's not a hard aircraft to build The AH-64D Longbow starts by taking an A model out of storage,(Cheney mothballed a lot of them after the wall fell) stripping the fuselage to bare metal and storing/refurbing the various components removed. Then the fun part comes with rewiring the the fuselage with brand new wiring along with whatever mods are needed mechanically. DITMCO (continuity check) the wiring and then install the old and new black boxes along with rigging the flight controls. Then off to functional/flight test to wring out the bugs. The oddest thing was that the longbow radar system uses one of the largest black boxes I have ever seen on an aircraft. About the size of a coffin for a 12 year old. Or maybe a large steamer trunk. A two man job to install as it weighs over 100Lbs. Personally I think that was a mistake My information is a bit dated and subject to a tad bit of fog ;-) My understanding was as far as navalisation goes it was easier to stick with the Cobra and upgrade the weapons and avionics than to make an an Apache that could withstand long periods in a salt water environment. I'm guessing but the blades were probably the biggest hang up. You'd have to mod them to fold and make sure they could handle a salt water environment. I think the Apache's blades fold (for air transport, at least) but as you point out, getting the airframe able to stand up to prolonged exposure to salt spray is a seriously non-trivial issue. Air transport is done via disassembly of the rotor baldes, not folding. It was designed for that. I think the standard was flying combat in 12 hours after an offload. Again with UK experience, we deploy Joint Force Harrier GR.7s to sea for specific deployments, but for a committed force we wanted the Sea Harrier; which wasn't just a case of putting a radar in the nose, but some surprisingly wide-ranging structural changes such as getting rid of all the magnesium components (while light and stiff, I'm assured it rots very fast in a maritime environment) Exacrly! It's one of those "devil in the details" and I bet even if they had convinced the Marines to buy some once it was deployed something new would crop up. -- The nation that makes a great distinction between its scholars and its warriors, will have its thinking done by cowards and its fighting done by fools. -Thucydides Paul J. Adam - mainbox{at}jrwlynch[dot]demon(dot)codotuk |
#12
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On May 20, 11:53 pm, "Leadfoot" wrote:
wrote in message oups.com... On May 20, 12:40 am, Rob Arndt wrote: On May 19, 9:03?pm, "Ed" wrote: "Jim Beaver" wrote in message t... An online article suggests, without citation or reference, that the U.S. Marine Corps nicknamed its Apache helicopter (through three models) as "The Duke," presumably in honor of actor John Wayne. I cannot find corroboration for this statement in web searches. ?Has anyone here with either first-hand or citable evidence to support it ever heard this story? Jim Beaver Not trying to be ignorant here, but if this is the AH64 Apache, isn't the Army the only user, not the Marines?? And old article from 2003 on the Apache and its vunerabilites which is still valid in 2007:http://www.slate.com/id/2081906/ Iraqi insurgents call the Longbow version the "Broken Bow" and they are not completely unjustified. This is supposed to be the premiere armored attack helo on the frontline battlefield forward of our AFVs and infantry. Instead, they need USAF air cover and rarely are far from the troops. When they do go out by themselves they are vunerable to simple AK-47 and RPG fire. Many have been downed and a large amount damaged enough not to be air worthy until after extensive repairs- and this is against untrained mobs with small arms. Imagine fighting the Russians, Chinese, or anyone with equal firepower, missiles, accurate radar, and emerging anti-helo technologies... A guy I know was an Apache pilot with the NC NG. This was in 1990-91 and they were disappointed they weren't deployed to Saudi Arabia. One thing he said stuck with me. It seems the Apaches at his base got broken into a couple of times so they put padlocks on the canopies. He said one guy unlocked it and just laid the lock next to the canopy. He forgot about it and when he took off, the lock flew back, hit something in the tail rotor, and brought the Apache down. I have no idea whether this was true, but he said his squadron was pretty sure the Apaches weren't "small arms proof up to 20mm" as advertised. The only thing "small arms proof up to 20mm" is the cockpit. It's similar in concept to the titanium bathtub found in the A-10. Although there is a lot more plexiglass I seem to remember reading that the rotors were supposedly 20mm proof..... Was he able to land safely? Apparently he never got very high....pretty much did some ground spins...torque is a biatch. The "Patch-Me" helo needs help... Rob- Hide quoted text - - Show quoted text -- Hide quoted text - - Show quoted text -- Hide quoted text - - Show quoted text - |
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#14
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#16
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![]() Paul J. Adam wrote: The usual claim I've seen is that the Apache is designed to survive a couple of hits from up to 23mm HEI (I assume with ZSU-23-4s in mind) - that's not "23mm proof", but rather "won't crash immediately and can limp back to base for repairs". Stuff like the gearbox able to run dry for thirty minutes before eating itself, that kind of thing. I'm sure there are still spots where one golden bullet can bring it down, but it's a tough bird as helicopters go. The Comanche was designed to take a 23 mm hit over anywhere its entire structure* by using a composite Kevlar reinforced body shell as its fuselage. The whole thing was built like a Mosquito bomber, where the monocoque exterior of its body formed the main structural strength of it, with only minimal interior reinforcement and bracing. Basically a giant plastic model helicopter where the fuselage halves are entirely hollow inside. * I'd like to see them try that on the cockpit windowpanes, BTW. Ballistic polycarbonate that's bullet resistant is one thing; ballistic polycarbonate that's proof against 23 mm HE fire is quite another. Easy enough to test though...tape a hand grenade onto it, and pull the pin. :-) Pat |
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