Z-10 thread

[Curious George]

Really? the exhaust would cause that much downward thrust on the whole chopper?! .. I am assuming the helicopter exhaust is more like the car exhaust.

I thought that exhaust from a turboshaft can generate thrust up to 10% of the overall power of the engine (somewhat similar to what happens with a turboprop), so pointing the exhaust upwards can reduce lift, however negligible it might be.

 

[kwaigonegin]

Take a look at MD-520N helo. It actually uses the exhaust to replace the rear rotor.

So, yeah, it is significant enough.

Actually that is a common but incorrect assumption. A NOTAR system does not use "normal" exhaust as their anti torque mechanism. There is actually a separate fan/motor that produces the thrust necessary to replace the torque forces generate by a conventional tail rotor.

 

[challenge]

chinese make power plant may be under power.I notice WZ-10 do not carry heat exchanger "grill" similiar to apache ,IRCM and switched to lighter ball turrent EO targeting system.

 

[Asymptote]

chinese make power plant may be under power.I notice WZ-10 do not carry heat exchanger "grill" similiar to apache ,IRCM and switched to lighter ball turrent EO targeting system.

I just read the latest Air Power magazine - its news section mentioned that WZ-10 was hit with delay due to the fact that US pressured Canada to stop supplying China with Pratt & Whitney PT6C Engines. So China has to develop its own indigenous version, which may not be as high powered as the PT6C.

 

[delft]

Actually that is a common but incorrect assumption. A NOTAR system does not use "normal" exhaust as their anti torque mechanism. There is actually a separate fan/motor that produces the thrust necessary to replace the torque forces generate by a conventional tail rotor.

The NOTAR system uses the down draft from the main rotor, it being deflected by the tail boom acting as a wing, the air flow being kept attached over the required distance by air flowing out of lengthwise slots. That air is provided by the fan,mentioned above. This fan is driven like the tail rotor of another helicopter. The idea is to provide a method of torque control less vulnerable than that anti-torque tail rotor.

 

[pugachev_diver]

Quick question, can the technologies developed from the Commanche project be fully applied to a new heavy attack helicopter, for example, a replacement for the Apache? Or is the Commanche development only suitable for a light reconnaissance vehicle? I have watched a documentary on the development of the Commanche and I was amazed by the stealthiness of the vehicle. The agility also amazed me, it was literally able to fly sideways and backwards. But is the stealthy and agile hall able to hold the heavy load of ammunition like the Apache, when the vehicle is enlarged?
Just curious, might sound stupid, but still tempted to ask.

 

[Deino]

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[MwRYum]

Quick question, can the technologies developed from the Commanche project be fully applied to a new heavy attack helicopter, for example, a replacement for the Apache? Or is the Commanche development only suitable for a light reconnaissance vehicle? I have watched a documentary on the development of the Commanche and I was amazed by the stealthiness of the vehicle. The agility also amazed me, it was literally able to fly sideways and backwards. But is the stealthy and agile hall able to hold the heavy load of ammunition like the Apache, when the vehicle is enlarged?
Just curious, might sound stupid, but still tempted to ask.

Some of its technologies - electronics and composites - maybe applicable for future projects, but stealth isn't that applicable when comes to attack helicopters, which empathise on survivability under enemy rather than stealth. And what doomed the Commanche is the use of UAV and UCAV for its roles, cheaper in terms of cost and lives.

But back to WZ-10, while it's obviously getting into the low-rate production phase, it'd be interesting to see if it'd lead to the PLA Marines to set up their own attack helicopter squadrons with it (or a PLAN helicopter outfit dedicated as such)...

 

[TerraN_EmpirE]

Some of its technologies - electronics and composites - maybe applicable for future projects, but stealth isn't that applicable when comes to attack helicopters, which empathize on survivability under enemy rather than stealth. And what doomed the Commanche is the use of UAV and UCAV for its roles, cheaper in terms of cost and lives.

No What doomed the RAH66 was the price tag $ 6.9 billion combined with continued price overruns, and missed Deadlines fallowed by the final killer the invasion of iraq where a flight of Apaches took major damage from AK fire. the RAH66 was not a tank killer but a Armed Scout a intended replacement for the OH58 that latter ended up looking too be Typecast into A full Attack helicopter. A number of RAH technologies are being integrated into the AH64D block 3 longbow Apache. I am of the opinion that lowered RCS Profiles will be part of the Next major Attack helicopter development but not too the degree of the RAH program, When combined with the X2 compound coaxial Profile and added survivability features That will be the next step for military Combat helicopters a lowered RCS, Higher speed and fly by wire.

 

[Blitzo]

Z-19 anyone?

Looks like it's got 4 hard points, but prolly won't all hold 4 missiles and maybe for fuel or sensors instead, most of the time. There's definitely no chin moutned gun, from this pic, and the optics ball is quite clearly seen under the nose. A good looking chopper, like a mini Z-10 or a OH-1 competitor. I like how the optics is under the nose, not mounted awkwardly on the roof.

Also it looks almost as "ready" as the latest Z-10 pictures. It's already got the bumps here and there indicating the presence of extra sensors for MAWS and datalinks, satellite etc. I'd bet my left one they're the same, if not at least derived from the same suite on the Z-10 too. Impressive for Harbin to get out a helicopter like this so fast... though I suppose it's similar to HALs situation with the dhurv --> LCH. Interesting to note that the specs of the Z-19 is similar, to the LCH's.
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On that note, can anyone get a number for the WZ-10's MTOW? Huitong says it weigs 5.5 tons, but I'm not sure if that's empty, loaded/standard, or maximum.