Z-19 armed recon helicopter

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Asymptote

Banned Idiot
Re: 3 advantages of directing helicopter engine exhaust upwards

1. By directing the helicopter engine exhaust upwards, it lowers the acoustic signature of the helicopter to potential observers on the ground. It's a good design feature for acoustic stealth.

2. Also, directing the exhaust upwards allows the helicopter blades to diffuse the hot exhaust gases. This is a good method of lowering the infrared signature of the helicopter.

3. When the helicopter is on the ground, you want the hot exhaust gases directed upwards and away from the ground crew. This is a good safety feature.

3 and 2 are the same, so you lose!! No tofu for you :D
1, I don't get it. How does engine exhaust produce acoustic signature? And the chopper's main rotor is already loud enough it will drone out any other noise anyway.

Actually, there is one more advantage of that design and it is pretty obvious. If you point the exhaust upward, it obscure/shield the heat source away from being detected on the ground down below by the enemy soldiers. The soldier has to be on a position ABOVE the chopper to be able to target the engine exhaust, by which the exhaust is partially shield by the spinning fan blades anyway and the heat is dispersed quickly by the spinning rotor.
 
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latenlazy

Brigadier
Re: 3 advantages of directing helicopter engine exhaust upwards

3 and 2 are the same, so you lose!! No tofu for you :D
1, I don't get it. How does engine exhaust produce acoustic signature? And the chopper's main rotor is already loud enough it will drone out any other noise anyway.

Actually, there is one more advantage of that design and it is pretty obvious. If you point the exhaust upward, it obscure/shield the heat source away from being detected on the ground down below by the enemy soldiers. The soldier has to be on a position ABOVE the chopper to be able to target the engine exhaust, by which the exhaust is partially shield by the spinning fan blades anyway and the heat is dispersed quickly by the spinning rotor.
Wouldn't the heat exhausted upwards complicate the airflow of the rotors though?
 

Deino

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Besides, this is the latest photo of the Z-19 !
 

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Deino

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Yes ... but I think from these one even Martian can't draw mayne new details ... this is so far the best I have.

Deino
 

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delft

Brigadier
What's so heavy abaft the rotor mast? I would expect the crew compartment to be heavy because of the armor protection. Then there is the gun under the nose. So what is he carrying further aft?
 

plawolf

Lieutenant General
The Z19 doesn't have a chin turret. Probably because of weight issues and making it an armed recon scout instead of a true attack helo in my book.
 

Deino

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:p ... white seems to be the primer !?
 

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