Yar,
Ok---it is all about the flow of air over the surface of the aircraft---.
You have a known product---a known design---the blk1---its tail has a certain design---. The function of the tail is to provide stability to the aircraft---.
So the design of the tail of the BLK1/2/3 has been ascertained before mass production---. The design has been put thru the wind tunnel and the best position of the tail was what we see on these three blks is for the job it is best designed to perform.
But in the BLK B---we have thrown an in swing or an out swing---whatever you prefer---. We have changed the shape of the top of the aircraft---and how did we do that---we have extended the canopy farther back to accommodate for another seat---and we have thickened the spine of the aircraft---possibly added more weight in the front ( which would have changed the center of gravity of the aircraft )---and the hump on the back of the aircraft---.
What that change has done is to change the pattern of air flowing over the skin of the aircraft---. So---the wind tunnel testing showed that a canted tail would be providing the best solution for the stability of the aircraft for the purpose it would be used for---.
Remember the term " the purpose it would be used for )---. Remember pakistani snow leopard---seen any videos on it---very large and massive tail---why---to give it control over sudden direction changes going over the cliffs and steep slopes..
The chinese had learnt it the hard way---. They put a rotating dish on an aircraft and made an awacs out of it---. The aircraft crashed on its first flight---. Th radar dish had changed the air flow coming towards the tail rudder---it made the aircraft unstable and thus it crashed---.
Now the same type of aircraft has a massive tail rudder to compensate for the radar dish on the back of the aircraft---.
Put your age in your info---so that we know who we are talking to son---
.
