The tsh-3 is a Tier III ground attack aircraft without possibility of rockets but the Russian tier II and III fighters has rockets. So why not the Tsh-3? More, the Pegas a Tier II Russian GA has rockets.
The rockets could add some chances to survive and play to the ths-3 when it's matched with superior planes from tiers IV and V. I've seen the Pegas flying slow and catching some fighters with the rockets
But with the TSh-3 if you run out of bombs you're doomed the fighters just have more hit points and a lot of firepower. That's is not funny. Of course the rockets just give you just an small chance but could enhance the experience to fly the tsh3.
Regards
ThePonja