ILS to launch commercial missions on Angara from 2017

[Baranquilla]

acc. to anatoly zak, angara 5 can launch cca 5.4 t to gto from plesetsk
http://www.russianspaceweb.com/angara5.html

Also according to Anatoly Zak, there is apparently a difference in GTO capability of 1600 kg between Plesetsk and Vostochny. 7000 kg for Vostochny and 5400 kg for Plesetsk. Since Plesetsk is at 62 and Vostochny at 51 doesn't that seem like a rather big difference? Can anyone confirm that this is correct?

[baldusi]

acc. to anatoly zak, angara 5 can launch cca 5.4 t to gto from plesetsk
http://www.russianspaceweb.com/angara5.html

Also according to Anatoly Zak, there is apparently a difference in GTO capability of 1600 kg between Plesetsk and Vostochny. 7000 kg for Vostochny and 5400 kg for Plesetsk. Since Plesetsk is at 62 and Vostochny at 51 doesn't that seem like a rather big difference? Can anyone confirm that this is correct?

Not at all. Orbital plane changes are the most expensive orbital maneuvers that there are. If you did the silly way on a circular orbit (i.e. a single burn), a 60deg orbital plane change would requires your orbital speed (~7,500m/s in LEO). The change from the Cape (27deg) to a 15deg GTO cost the Falcon 45% of its payload. Of course they do it more intelligently and do a super synchronous GTO. But it is still extremely expensive.
Being at a very high latitude does helps significantly when going to polar (like sun synchronous) orbits. And for that Plestsk is the best launch site in the world. The only problem is using a a truck on a Formula One race.

[Baranquilla]

Yea I calculated the extra delta v needed to for inclination change from Plesetsk and I ended up with something like 300 m/s extra needed, that shouldn't be able to amount to that difference right?

[baldusi]

Yea I calculated the extra delta v needed to for inclination change from Plesetsk and I ended up with something like 300 m/s extra needed, that shouldn't be able to amount to that difference right?

That's the same as Cape's 27deg 1,800m/s to a 1,500m/s GTO, and that was a 45% performance hit. That hit is just 25%. Seems pretty good, in fact.