CSH-2 Rooivalk south african attack helicopter, page 1
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Topic started on 8-11-2004 @ 06:05 PM by blue cell

The South African designed and manufactured Rooivalk attack helicopter comes equiped with to air to air missiles, anti-tank missiles and a rapid fire automatic 20mm cannon. It carries a crew of two. The first CSH-2 for the South African Air Force was delivered at the end of 1998, with manufacture planned at four per year until 2001. In a police support role it could be used for inntelligence gathering, surveliance, electronic soundwave jamming an as a airborne crane. The survivability of the Rooivalk is enhnaced by design characteristics that include low detection signatures, high agility, damage tolerance, dual redundant systems and airframe crashworthiness. The helicopter is able to operate in the nape of the earth environment and can operate in night and adverser wealther conditions from long standoff ranges. The helmet, HUD and nose mounted day/night stabilized sighting systems provide for fast, hightly accurate designation and delivery of anti-tank missiles, air-to ground rockets, cannon fire, and the ability to carry air to air missiles for self defence.
specs
1.country of orgin South Africa
2. builder denel aviation/ atlas aircraft co
3. role attack helicopter
4. rotor diameter 15.22M
5. length 18.65M
6.height 5.15M
7. weight 13,035 LBs, maximum takeoff weight 19,290 LBs
8. engine 2 makila 1K2 turboshaft
9. maximum speed 309 KM/H, cruising speed 278 KM/H
10. surface ceiling 20,000 FT
11. armament 20MM cannon ( with 700 rounds) 8 or 16 anti-tank missiles, 4 matra BAE, Dynamics, mistral air to air missiles, 2 denel V3P air to air missiles, 38 or 76 unguided rockets.


I think its great that South Africa goverment is investing money in systems that will help guard it's borders, and it's people.

denel.co.za

globalsecurity.org


edit: fixed the links...

[edit on 11-25-2004 by Zion Mainframe]


reply posted on 11-11-2004 @ 10:13 PM by Off_The_Street
The Kamov has gone head to head with the Apache in at least four procurements I can think of, including Turkey, ROK, and Japan; it never even made it through the first downselect.

The reasons for that are simple. The KA-50 is primarily a paper airplane, with few operational units, an absolutely horrible logistics tail, a reputation as a hanger queen (not Kamov’s fault, necessarily; they’re simply too complex from a mechanical point of view), and the fact that, with only a single pilot, the modern C4I2 battlefield is simply too complex for them to take care of business. You can barely fly, do ASE, designate, communicate with other assets, evade enemy assets and shoot them -- all at 50 ft agl in pitch darkness -- with two people; one guy simply can’t do it.

How many rounds the gun has is probably the least important thing going. In a digital battlefield it’s communications interoperability and handoff that counts more.

I cannot say whether or not the KA-50 is easier to fly because of no tail rotor; I do not know of anyone who has flown both (probably more than thirty percent of the people in my department are retired Apache pilots and none of them have).

As far as the “level of survivability” with the Kamov’s downward ejection seat, I think that’s a red herring. The AH-64 has layered protection which starts with it being harder to track, then harder to hit, then better armored against the hit, and, if the worst happens and it does sustain a hit that defeats it, the Apache’s collapsing gear and stroking Pilot and CPG seats will enable the crew to get out and walk away.

That’s the kind of level of survivability I like.

Now obviously I am biased in favor of the AH-64; I have been hustling them for thirteen years. Nonetheless, look at the countries which have chosen the AH-64 (The United States Army, Singapore, Japan, Korea, the UK, Netherlands, UAE, Egypt, Israel, and Saudi) and compare them to Australia (which chose the Tiger and is now in litigation against Eurocopter); and Turkey, (which chose the AH-1W and now is litigating with Bell).

And no one has picked either the Kamov or the Denel, despite their incredible offset offers and low prices.

Go figure.



reply posted on 11-11-2004 @ 11:21 PM by ShadowXIX
Great post Off_The_Street I never knew they ever went head to head.

About coaxial helios most info Ive found on them suggest they are easier to pilot because I think they have less controls to worry about. You dont have to control a tail rotor at all. I think this is one reason Russia went with this type of design.

I know its a Kamov market site but I have heard this before other places.
www.kamov.ru...

One con of the design I know of is a coaxial system requires more complex, heavier gearboxes and swashplates. More parts has a direct effect on maintenance cost, and of course more parts the more things that can go wrong. This might be why theyhave a rep as a hanger queen.

But I guess the proof is in the pudding if they went head to head and the Apache came out on top that pretty much says it all.

By the way where they Apache-longbows?


reply posted on 12-11-2004 @ 10:00 AM by Off_The_Street
Shadow, please understand that when I say they went "head-to-head" with us, it wasn't on the battlefield, but in the procurement cycle! The customer simply realized that the other aircraft didn't meet the requirements which incluede, in addition to its operational capabilities, delivery schedule, logistics (which are often as much as the aircraft itself, since it includes spares, operator/maintainer training, depot support, etc.), cost, offset package, and a bunch of other things.

You're right, of course, in that a co-ax system eliminates the torque and thus avoids the need for a tail rotor. To be honest, I don't know the control laws for co-ax rotor helicopters, although one of our chrome-domes tried to explain it to me once.

With a conventional helicopter, the cyclic angles the "disc" of the moving rotor blades to a forward, aft, left, or right tilt, which enables the aircraft to move forward, backward, or sideways. The collective changes the angle of the blades themselves to apply or remove lift, and the rudder increases/decreases the pitch of the rotor to enable yaw. Our CH-47 (which is built in Philadelphia, not Mesa, so I don't see many of them) has two rotors which are controlled separately, and that, rather than the tail rotor (since the Chinook doesn't have one) is what makes it yaw.

I do know that the United States has tried on several occasions to build counter-rotating propeller aircraft, including the two "pogo" fighters in the late 1940's and, I believe, the XB-49 in an early configuration. None of them worked out well. The Russians, God bless 'em, have been the only people that can make those systems work right.

And yes, it was the AH-64D that competed and won. Actually, there are three Apaches: The AH-64A, which the army had about 800 of, as well as a couple of international customers, has 1970's technology and analog gauges, etc. The AH-64D is the same basic airframe and engines, but is built on a MIL-1553 digital bus and has a glass cockpit (no gauges, just interactive LCD screens) The Longbow is that AH-64D with the Lockmart millimeter wave fire control radar (FCR) on the mast. You can upgrade any D-model to the Longbow configuration in the field in about sixteen hours, I believe.

Typically when we sell aircraft, we sell D-models, about half of which are Longbows. All Longbows are better, of course, but there is a tremendous cost increment.

The US Government is in the process having us re-man their fleet to the D-model configuration (most of which will probably be Longbows), which means our factory will be open until I retire and then some.
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