Kuban Planes: GridiroN's Yak-7b & P39L Expectations

[GridiroN]

 

 

Edited March 6, 2018 by GridiroN

[Max_Damage]

Yak7b will be very nice IMO. Ser 69 and its shkas are pretty obsolete by 1942 standarts. Double UBS will be extremely good. UBS have much better effective range (up to 300m instead of 100) and lethality.

 

Regarding your table of stats in the video. Are you sure about spitfire V speeds at 2000m? 480 and 600 kmh listed.

Edited March 4, 2018 by Max_Damage

[GridiroN]

2 hours ago, Max_Damage said:

Yak7b will be very nice IMO. Ser 69 and its shkas are pretty obsolete by 1942 standarts. Double UBS will be extremely good. UBS have much better effective range (up to 300m instead of 100) and lethality.

 

Regarding your table of stats in the video. Are you sure about spitfire V speeds at 2000m? 480 and 600 kmh listed.

 

It's 480 @ 3000m with a 9 inch boost (combat). It's 535 with a 16 inch boost (emergency). I wrote the chart for sustainable airspeeds. Emergency would usually only be used in combat obviously. Same with Airacobra....max sensible HP is 1325. Emergency HP is 1500.

[rolikiraly]

Still, no way it's a 124 km/h difference between the 2 versions at same altitude ?

Also it's 5 min and 2 min limits for the Kobra. And 37 mm will always be there from my understanding, not optional.

[Max_Damage]

yes i was kind of baffled by the listed 120 kmh diffirence. Perhaps there is a typo and 600 kmh is actually 500 kmh :D

[GridiroN]

2 hours ago, rolikiraly said:

Still, no way it's a 124 km/h difference between the 2 versions at same altitude ?

 

 

1 hour ago, Max_Damage said:

yes i was kind of baffled by the listed 120 kmh diffirence. Perhaps there is a typo and 600 kmh is actually 500 kmh :D

 

Oh, this is my mistake. 604 came from TAS @ 6K, with a 16 inch boost. Must have been tired when I did the Spitfire 

 

TAS @ 3000m, with a 9 inch boost is 457kph. I will add a correction in my video when I have time.

 

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Also it's 5 min and 2 min limits for the Kobra. And 37 mm will always be there from my understanding, not optional.

 

Interesting...either it was revised by the dev team or I'm going crazy, because I most definitely remember it being 15/2/1min intervals, not 15/5/2. 

 

Either way, I'm slightly happier about that!

Edited March 4, 2018 by GridiroN

[rolikiraly]

No problem (but i think it was 5/2 from the start, and now it's listed like that for sure).

 

Actually P-39 will be super fast, though i don't know if radiators can be adjusted to gain even more km/hs or not. It might be one of the fastest if not the fastest plane at around ~1.5...2.5 km alt, save for the La-5FN?

I hope Yak-7b will not be used for scenarios earlier than, let's say, around '42 July/August. (although there were some 7s around before that).

 

Anyway, numbers aside, both of these should be interesting regarding flying characteristics, as P-39 is supposed to have some unusual traits, and Yak-7 is said to have an advanced modelling, so it will be interesting to see how  it compares to other Yaks.

 

Edited March 5, 2018 by rolikiraly

[GridiroN]

1 hour ago, rolikiraly said:

No problem (but i think it was 5/2 from the start, and now it's listed like that for sure).

 

Actually P-39 will be super fast, though i don't know if radiators can be adjusted to gain even more km/hs or not. It might be one of the fastest if not the fastest plane at around ~1.5...2.5 km alt, save for the La-5FN?

I hope Yak-7b will not be used for scenarios earlier than, let's say, around '42 July/August. (although there were some 7s around before that).

 

Anyway, numbers aside, both of these should be interesting regarding flying characteristics, as P-39 is supposed to have some unusual traits, and Yak-7 is said to have an advanced modelling, so it will be interesting to see how  it compares to other Yaks.

 

 

By the stats, the P39 is pretty uninteresting in terms of maneuverability. It's angle of attack is about as good as a Yaks69, so it's alright. As I stated in my video, it's climb rate is sub-average. If you want to climb in combat, you'll have to rely on diving first, like the FW190. 

 

I think the P39 is going to be a hunter...much like a 109. I think it'll shine when it has an E advantage. Without it, I think it'll not be a plane you want to be in, especially with it's engine being in it's rear. This is why I said it could be very much relegated to Russian BnZ'er.

 

And yup, the Yak-7 should be available after May/42 according to the stats. Lots of room for being available on Stalingrad maps. 

[ShamrockOneFive]

Thanks as always for doing your videos Gridiron!

 

I'm wondering about two points in the video. I know the data listed says May 1942 but I think this was copied from the Yak-1 Series 69 entry in error. Han told us that the Yak-7B Series 36 was a late production model produced in early 1943 (January to March-ish) which makes it a contemporary of the Yak-1B Series 127. That certainly plays out in the stats.

 

I'm less certain about this second point. If the max sustained turn time is at a higher speed wouldn't that reflect a slightly less effective turn than the other two Yaks? Once speed drops below the suggested turn speed it should degrade in performance meaning that the Yak-7B has to fly faster to get about the same turn. Once speed drops so does the best turn rate. This could be me not getting something. Thoughts?

[GridiroN]

31 minutes ago, ShamrockOneFive said:

I'm wondering about two points in the video. I know the data listed says May 1942 but I think this was copied from the Yak-1 Series 69 entry in error. Han told us that the Yak-7B Series 36 was a late production model produced in early 1943 (January to March-ish) which makes it a contemporary of the Yak-1B Series 127. That certainly plays out in the stats.

 

I hadn't heard about that. If that is the case, I will be slightly disappointed. Checking Wikipedia, it does confirm that the Yak-7b, or at least, some variant of it (if it is indeed correct that the one in game is a late series variant) was available for combat in May 1942. It's still possible map makers could add the Yak-7b in 1942 scenarios if they felt like it, or block off some upgrades or something like they do with the Yak s69 having forced rocket pods on 1940/1 maps. 

 

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I'm less certain about this second point. If the max sustained turn time is at a higher speed wouldn't that reflect a slightly less effective turn than the other two Yaks? Once speed drops below the suggested turn speed it should degrade in performance meaning that the Yak-7B has to fly faster to get about the same turn. Once speed drops so does the best turn rate. This could be me not getting something. Thoughts?

 

 

 

 

Very good point I should have considered and spoke on during the video. I'd say 2 things to this. First, I think even if you are correct and the turn actually gets less sustainable at lower speeds, that's still a pro as you can now turn at a much faster speed just as effectively as the other two Yak models, and also, the BF109's best turn is at 270 like most of the other planes, so you will be causing the enemy 109 to stay above his best turn while you're already at yours. 

Second, I think the measure is just suggesting the turn doesn't get any better, not that it necessarily gets worse. Though I could be mistaken as im not an aerodynamic engineer, I think the plane's turn rate should remain same'ish until stall speed around 150kph for most planes, meaning the Yak-7b achieves it's best scenario faster than most other types of the era.   

 

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Thanks as always for doing your videos Gridiron!

 

 

Edited March 6, 2018 by GridiroN

[Ehret]

I wonder how the P39' 100% boost will behave? If it will be similar to the P40 then the P39 driver with a stopwatch could be almost invincible in (b'n')zoom and shallow dive.