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Ka25 Question

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  • Member since
    April 2015
Ka25 Question
Posted by Mopar Madness on Wednesday, June 5, 2019 9:12 PM

Hi folks. Quick question. What are the items attached to the wheels on this helicopter? What’s their primary function?  Thanks!

Chad

God, Family, Models...

At the plate: 1/48 Airfix Bf109 & 1/35 Tamiya Famo

On deck: Who knows!

  • Member since
    March 2003
  • From: Towson MD
Posted by gregbale on Wednesday, June 5, 2019 9:24 PM

Mopar Madness
What are the items attached to the wheels on this helicopter? What’s their primary function? Thanks!

They're 'emergency rapid inflation flotation collars.' Standard on the navy versions.

Greg

George Lewis:

"Every time you correct me on my grammar I love you a little fewer."
 
  • Member since
    May 2013
  • From: Indiana, USA
Posted by Greg on Wednesday, June 5, 2019 9:40 PM

It's worth saying again.....

The breadth of knowledge here never ceases to amaze me.

 

-Greg

  • Member since
    April 2015
Posted by Mopar Madness on Wednesday, June 5, 2019 9:44 PM

gregbale

 

 
Mopar Madness
What are the items attached to the wheels on this helicopter? What’s their primary function? Thanks!

 

They're 'emergency rapid inflation flotation collars.' Standard on the navy versions.

 

Thank you Greg!!!

Chad

God, Family, Models...

At the plate: 1/48 Airfix Bf109 & 1/35 Tamiya Famo

On deck: Who knows!

  • Member since
    March 2013
Posted by LonCray on Thursday, June 6, 2019 10:18 AM

Okay, I'd love to see a photo of that helicopter sitting on the water with those things.  I'm sure Russian pilots are less risk-averse than US Navy pilots, but I still don't think I'd trust those to keep my helicopter out of the drink long enough for rescue or takeoff.

  • Member since
    March 2003
  • From: Towson MD
Posted by gregbale on Thursday, June 6, 2019 11:24 AM

LonCray

Okay, I'd love to see a photo of that helicopter sitting on the water with those things.  I'm sure Russian pilots are less risk-averse than US Navy pilots, but I still don't think I'd trust those to keep my helicopter out of the drink long enough for rescue or takeoff.

Funny you should mention that.

I've been unable to find any photos of that sort of float actually deployed, so it's all a guess.

I assume the intention is merely to give the crew a few extra moments to try to get out. But...given the aircraft's shape and center of gravity, relative to the gear...it looks like such floats would more likely inevitably 'turn turtle' and drown the crew with the efficiency that was a hallmark of the old Soviet Union.Indifferent

Greg

George Lewis:

"Every time you correct me on my grammar I love you a little fewer."
 
  • Member since
    December 2018
Posted by Ted4321 on Thursday, June 6, 2019 11:34 AM

gregbale

 

 
LonCray

Okay, I'd love to see a photo of that helicopter sitting on the water with those things.  I'm sure Russian pilots are less risk-averse than US Navy pilots, but I still don't think I'd trust those to keep my helicopter out of the drink long enough for rescue or takeoff.

 

 

Funny you should mention that.

I've been unable to find any photos of that sort of float actually deployed, so it's all a guess.

I assume the intention is merely to give the crew a few extra moments to try to get out. But...given the aircraft's shape and center of gravity, relative to the gear...it looks like such floats would more likely inevitably 'turn turtle' and drown the crew with the efficiency that was a hallmark of the old Soviet Union.Indifferent

 

After I read loncray's comment, I too started searching.  I found nada. 

T e d

  • Member since
    May 2009
  • From: Poland
Posted by Pawel on Thursday, June 6, 2019 2:20 PM

Hello!

That's because you didn't do any search in Russian!

I have searched for: ka-25 вертолет (Google translate!)

And here's what have turned up:

Kamov Ka-25 with inflated emergency flotation bags

Interestingly, the link to it would contain Russian characters and so the picture wouldn't link - I had to host it on my server with another name to show it to you!

I hope you like it - have a nice day

Paweł

PS. BTW, this helo also has a very mysterious "electrooptic sensor" under the tail boom and a top secret dipping sonar under the rear hull - try googling some info on that!

All comments and critique welcomed. Thanks for your honest opinions!

www.vietnam.net.pl

  • Member since
    March 2003
  • From: Towson MD
Posted by gregbale on Thursday, June 6, 2019 2:42 PM

Pawel
That's because you didn't do any search in Russian! I have searched for: ka-25 вертолет (Google translate!)

Pawel, I happily (and humbly) stand corrected (and bow to your superior Googling acumen!) Bow Down

Nice find!

Greg

George Lewis:

"Every time you correct me on my grammar I love you a little fewer."
 
  • Member since
    September 2012
Posted by GMorrison on Thursday, June 6, 2019 2:49 PM

So I assume that on the Airfix art those things are not deployed.

 

 Modeling is an excuse to buy books.

 

  • Member since
    March 2013
Posted by patrick206 on Thursday, June 6, 2019 5:48 PM

Interestingly, when a helicopter is cruising in the higher speed ranges and the decision is made to deploy the floats, one must slow the aircraft to a specified lower speed before inflating them. They inflate via highly compressed air and the action is practically instantaneous, at higher speeds the aerodynamic drag is sufficient to cause a SUDDEN dangerous nose down attitude, rotor/fuselage damage could occur, with possible loss of control.

When equipped with what are called "pop out floats," the flight manual specifies the operation and aircraft speed restrictions involved. The floats are regularly tested at annual inspection time, when they are activated it is amazing how fast the action happens.

The precaution is to have no one near the un- inflated device, if they were near they would quickly be on their way to some place else, when the float is activated for the testing.

Patrick

 

  • Member since
    April 2015
Posted by Mopar Madness on Thursday, June 6, 2019 7:44 PM

Well I feel silly now because I thought those on the box art were already deployed!  I was WAY off!

Chad

God, Family, Models...

At the plate: 1/48 Airfix Bf109 & 1/35 Tamiya Famo

On deck: Who knows!

  • Member since
    December 2018
Posted by Ted4321 on Thursday, June 6, 2019 7:58 PM

Pawel wins! 

 

Great find! 

T e d

  • Member since
    September 2012
Posted by GMorrison on Thursday, June 6, 2019 10:20 PM

Yeah, Pawel is a precious commodity here. Our man behind the Iron Curtain.

 

Oh wait...

Well, he is an example of what makes this forum really special.

 Modeling is an excuse to buy books.

 

  • Member since
    April 2003
  • From: USA
Posted by keavdog on Friday, June 7, 2019 2:16 AM

I had read that before.  There a similar device's on choppers with skids.  Google helicopter deployable floats 

Thanks,

John

  • Member since
    March 2013
Posted by LonCray on Friday, June 7, 2019 10:41 AM

Yes, thank you Pawel!  The deployed picture on the water is way more plausible than what's on the box art, which looked like miniature rafts.  

  • Member since
    May 2009
  • From: Poland
Posted by Pawel on Friday, June 7, 2019 5:23 PM

Hello!

Glad I could help you out here, Gennulmen! Thanks a lot for the kind words!

Paweł

All comments and critique welcomed. Thanks for your honest opinions!

www.vietnam.net.pl

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