That'll Buff Out!

[Spin]

Story goes the Yak pilot ran out of brakes and ideas at about the same time, whilst approaching the fuel bay. I haven't flown one, but the way it was explained to me, the Yak 52 has a castoring nosewheel and pneumatically operated brakes. Run out of air for whatever reason and your brakes n steering disappear simultaneously - with the sad result shown below;

 

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[Spin]

Another view;

 

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[Guest OzChris]

Some great images there - but is very sad :(

 

 

[David Isaac]

And veeery expensive

 

 

[dazza 38]

You would be very pissed off if you owned the piper.

 

 

[dazza 38]

For General Information.The Yak 52 has a main pneumatic reservoir.Maximum pressure is 50 Bar.That pressure will give you approximately 3 starts of the engine, but it also powers the brakes (as Spin has mentioned) flaps and undercarriage. A engine driven pump keeps the bottle topped up.There is also a emergency air bottle which is externally charged.Its good for one U/C extension. The yak has a hand brake lever (like a Drifter) on the stick.When you squeeze the lever, at the same time as pushing on the rudder bar.It brakes that wheel.If heading straight, ie- no rudder imput, both wheels have brake pressure.

 

PS- The yak's engine the Venedeev MP14 was designed for air starting due too the very cold climates, which would render Batteries dead, in Ruski Land.

 

 

[Spin]

You're not wrong - lucky too that the Piper is a paraffin burner rather than avgas, I suspect the latter would have gone woof seeing as it got sprayed all over from the Yak prop hacking open the Piper's tanks!

 

Little birdy tells me the Yak driver had finger trouble, shut off or forgot to open the air valve which allows the engine driven compressor to refill the air bottle. Couple of pssst, psssts on the brakes and it was all over......

 

 

[dazza 38]

You're not wrong - lucky too that the Piper is a paraffin burner rather than avgas, I suspect the latter would have gone woof seeing as it got sprayed all over from the Yak prop hacking open the Piper's tanks!Little birdy tells me the Yak driver had finger trouble, shut off or forgot to open the air valve which allows the engine driven compressor to refill the air bottle. Couple of pssst, psssts on the brakes and it was all over......

Lucky the Yak has a Timber Prop.I could have been a real disaster.Well it is already a disaster, but it could have worse.

 

 

[willedoo]

And a classic old fire truck in the second photo. Lools like a 4wd 1418 Benz; the old Turtles are a collectors item in their own right.

 

Cheers, Willie.

 

 

[Guest Darren Masters]

Isn't it funny, the YAK, such a beast but wait...it has a wooden prop. A YAK owner here was telling me that they used to have lines on a part of the prop. If the prop was damaged you could cut it below the lines and it would still fly on reduced prop length...

 

 

[dazza 38]

Isn't it funny, the YAK, such a beast but wait...it has a wooden prop. A YAK owner here was telling me that they used to have lines on a part of the prop. If the prop was damaged you could cut it below the lines and it would still fly on reduced prop length...

That is true,Dazza.From what I have read. Because the main wheels swing forward in the retracted position and wheels are exposed and clear of the wing.If a person forgets too lower the Gear. It will land on the mains, turn into a tail dragger.Trim the prop, and there is a handle under the tail.It will wear that off .I wouldnt try it myself though.lol

 

 

[willedoo]

Isn't it funny, the YAK, such a beast but wait...it has a wooden prop. A YAK owner here was telling me that they used to have lines on a part of the prop. If the prop was damaged you could cut it below the lines and it would still fly on reduced prop length...

Speaking of damaged props, Darren, it reminds me of one of R.M. Williams' stories in his autobiography that I read quite a few years ago. Apparently he was approached by a bloke in Alice Springs who claimed to be able to find Lassiter's Reef & was asking R.M. to fund an expedition. He didn't have any luck with R.M., so he eventually hired a plane & pilot & went out on his own, can't remember whether it was pre or post war, but it was a biplane from memory. Anway, they landed on Lake Armadeus, hit a soft patch and had a prop strike which broke the end off one propeller. The pilot spent two or three days with a sharp knife trimming the props to size & shape, losing about six inches of length in the process. The end result was not enough power to lift off with two people on board, so he left the prospector there with some food & water, flew back to Alice, then returned with another plane to pick him up. No drama this time as they'd had time to scout out a harder landing strip.

Cheers, Willie.

 

 

[Guest Darren Masters]

Speaking of damaged props, Darren, it reminds me of one of R.M. Williams' stories in his autobiography that I read quite a few years ago. Apparently he was approached by a bloke in Alice Springs who claimed to be able to find Lassiter's Reef & was asking R.M. to fund an expedition. He didn't have any luck with R.M., so he eventually hired a plane & pilot & went out on his own, can't remember whether it was pre or post war, but it was a biplane from memory. Anway, they landed on Lake Armadeus, hit a soft patch and had a prop strike which broke the end off one propeller. The pilot spent two or three days with a sharp knife trimming the props to size & shape, losing about six inches of length in the process. The end result was not enough power to lift off with two people on board, so he left the prospector there with some food & water, flew back to Alice, then returned with another plane to pick him up. No drama this time as they'd had time to scout out a harder landing strip.Cheers, Willie.

Amazing what you can do with props but equally amazing is what they could do to you if they are not within spec...