Finnish air force Mustang kills on Russian Front? (5 Viewers)

Finland claimed to have shot down 7 or 9 P-51s in total, so as to prove that his claim was not that strange. [...]

Interestingly, the Yak-9 did have slightly squarer wing tips than other Soviet types. The difference was visually modest, but it was there.

See the first image in my post on page 2 of this thread here.

To reiterate, all the identified Finnish P-51 claims turned out to be Yak-9s. This was discovered in the '90s/early '00s (the page in the image is from 2006). The square wing tips were the source of the confusion.
 
What color where the bubbletop P-39 and P-63 Kingcobras ?

Green ?

View attachment 898342

This is in a museum in Finland:

View attachment 898343

I asked Chat GPT, as I already investigated the issue with it, but somehow now it comes back with quite a bit more:



July 4, 1944

Karhila's Finnish victory list records:

  • 4 July
  • Bf 109G MT-460
  • Vatnouri
  • claimed P-51. Wikipedia
But the Soviet loss reconstruction for that day identifies:

  • 1 Yak-9, 13 IAP, VVS KBF
  • failed to return from a mission over the Bay of Vyborg
  • time approximately 06:57 Finnish time
  • pilot Captain Stepan Danilko, killed/MIA
  • the researchers specifically identify this loss with Karhila's claim.
  • Karhila's sortie/claim is given as approximately 05:50–07:15, in the Tuppuransaari area.
In other words, this isn't merely "there happened to be a Yak-9 lost somewhere in Finland that day." The Soviet aircraft was a 13 IAP KBF Yak-9 operating in the Bay of Vyborg at virtually the same time and place as Karhila's supposed P-51 engagement. Axis History Forum

There was actually a second 13 IAP Yak-9 lost on July 4, but that one was brought down by Finnish AA and the pilot, Nikolai Yegorov, survived after being recovered from the water. So it isn't the obvious candidate for Karhila's victory. Axis History Forum

July 7, 1944

This is even more interesting.

Karhila's official victory list says:

  • 7 July
  • Bf 109G MT-461
  • Vatnouri
  • claimed P-51. Wikipedia
The Soviet loss reconstruction says:

  • 1 Yak-9, 13 IAP, VVS KBF
  • lost in an air combat in the Bay of Vyborg
  • approximately 21:00
  • pilot Junior Lieutenant Rafail Tebenkov, killed/MIA.
  • The Finnish research explicitly identifies it with Karhila's Yak-9/P-51 claim.
  • Karhila's claim was made in the Uuras area, approximately 19:30–20:45 Finnish time. Axis History Forum
So again we have:

Karhila claim: P-51, Vatnouri/Uuras area, evening
Actual Soviet loss: Yak-9, 13 IAP KBF, Bay of Vyborg, evening

And there were two additional Yak-9s lost that morning, but these belonged to 14 GIAP and were claimed by German JG 54 pilots Thyben and Frädisch. They were therefore unrelated to Karhila's evening encounter. Axis History Forum

The pattern

So the relevant sequence becomes:

DateKarhila's claimSoviet loss matching area/timeResult
4 JulyP-51, Vatnouri/TuppuransaariYak-9, 13 IAP KBF, Bay of Vyborg, 06:57Very strong correspondence
5 JulyYak-9, Tuppuransaari—Karhila explicitly identified a Yak-9 the next day
7 JulyP-51, Vatnouri/UurasYak-9, 13 IAP KBF, Bay of Vyborg, ~21:00Very strong correspondence
10 JulyYak-9, Uusikylä—Another ordinary Yak-9 identification
This substantially changes the evidential situation from merely saying "perhaps Karhila confused Yak-9s with Mustangs."

We now have two independent Soviet Yak-9 losses from 13 IAP KBF, on the exact two dates on which Karhila claimed P-51s, in the Bay of Vyborg/Uuras–Tuppuransaari/Vatnouri operational area. The researchers who have reconstructed the losses actually associate those Yak-9s with Karhila's claims. Axis History Forum

And there's an especially telling detail: 13 IAP was flying Yak-9s, while the notion that these were Soviet P-51s has no basis in the operational record. The contemporary Soviet loss documentation therefore gives us a very concrete alternative identification.

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The thing that surprises me is that Karhila obviously knows what a Yak-9 looks like, yet he misidentifies them as P-51s half the time. Odd, but not as odd as P-51Ds being there on that day...

My guess is there could be a difference of appearance between Yak-9s: Some could be a broken up two-tone of grays, maybe even green and black if they were painted the old way, but some where just a single light gray on top. That might have been enough to thrown him off.

Where there any P-39 VVS units in that area?
 
Very interesting topic and a lot of information, fantastic reading! There's no doubt in my mind that the 'Mustang' claims from Finnish Bf 109 pilots were in fact Yak-9s. I can completely understand why, because rumors were numerous among pilots regarding enemy forces getting newer and better aircraft – especially with the ongoing talks and expectations of the Soviets receiving Mustangs through Lend-Lease. Plus, I seem to recall reading about Finnish pilots encountering Yaks and expressing serious concern about the Yak-9 being faster and more agile around the summer of 1944, thanks to their more powerful engines and overall improved performance.
 
See the first image in my post on page 2 of this thread here.

To reiterate, all the identified Finnish P-51 claims turned out to be Yak-9s. This was discovered in the '90s/early '00s (the page in the image is from 2006). The square wing tips were the source of the confusion.
Ok...Yak-9 does slightly look like a Mustang...in scoop area...and speed ( 690 km/h ).


Meredith was a russian spy...so the same data was available to russians as was for the US aircraft designers:


View: https://www.youtube.com/watch?v=ixHIiRZErGM
 
Ok...Yak-9 does slightly look like a Mustang...in scoop area...and speed ( 690 km/h ).


Meredith was a russian spy...so the same data was available to russians as was for the US aircraft designers:


View: https://www.youtube.com/watch?v=ixHIiRZErGM


Just to clarify a little. When you say: "the same data was available to russians [sic] as was for the US aircraft designers" - are you referring to the so-called Meredith effect? If so, you are correct. However, it wasn't just available to US and Soviet designers - it was available to everyone. The material was published by Meredith in a paper called "Note on the Cooling of Aircraft Engines with Special Reference to Ethylene Glycol Radiators Enclosed in Ducts" (Aeronautical Research Committee Reports and Memoranda No. 1683). This material was never classified and wasn't relevant to Meredith's later Soviet espionage activities. The report is available for free download here.

Meredith also was never personally involved in the Mustang development - he worked at the RAE in Farnborough in the UK, so besides his past work on engine cooling and associated aerodynamics and thermodynamics, he wouldn't have been able to tell the Soviets anything about the Mustang. In fact, his spying activities were limited to the pre-war period between 1937 and 1939. He left the RAE in 1938 to work as chief designer for an aircraft instrument company, so he had very little access to any sensitive material after that date - long before the Mustang or Yak aircraft family were developed.

The material that he did share with the Soviets were mostly related to autopilots, early remote controlled target drones, etc. Not really relevant to this discussion. Of course, the creator of the video used the fact that he was a spy to generate views of his video, but in reality that fact is only a footnote when it comes to the Mustang's design.
 

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