ACR LTT ACFT CAUGHT IN WAKE TURB FROM A PREVIOUSLY DEPARTED WDB ACFT DURING TKOF.

Narrative

AT OR ABOUT PM20 LCL; OUR LTT ACFT RECEIVED DEP CLRNC FROM BOS TWR ON RWY 22R. IMMEDIATELY PRECEDING OUR DEP WAS THE DEP OF A COMMERCIAL WDB ACFT. WE WERE NOT GIVEN NOR DID WE WAIVE A WAKE TURB AVOIDANCE NOTATION. DUE TO THE HIGHER SUMMER TEMPS (APPROX 80 DEGS F) OUR ACFT REQUIRED HIGHER V SPDS. DUE TO THESE HIGHER SPDS; WE NEEDED MORE RWY AND; THEREFORE; ROTATED FARTHER DOWN THE RWY THAN IS COMMON IN WINTER. AS A RESULT; WE WERE UNABLE TO CLB ABOVE OR SIDESTEP THE WAKE OF THE PREVIOUS JET AND ROLLED VIOLENTLY INTO A 60 DEG OR GREATER BANK TOWARD THE BOS CTL TWR AND WERE IN A NOSEDOWN POS. THIS CONDITION LASTED A FEW SECONDS UNTIL THE CAPT WAS ABLE TO RIGHT THE PLANE. AT THE TIME THIS OCCURRED; THE CTLR ON LCL WAS PREPARING TO TRANSFER US TO BOS DEP; BUT STOPPED HIS XMISSION MID -SENTENCE -- APPARENTLY IN RESPONSE TO RECOGNIZING OUR UNUSUAL ATTITUDE. AFTER WE RESUMED OUR ATTITUDE TO WINGS LEVEL AND RESUMED OUR CLB; WE WERE HANDED OFF TO DEP WITH NO MENTION MADE ON EITHER OF OUR PARTS. THE REST OF THE FLT TO PHL WAS NORMAL AND PAX WERE REASSURED OVER THE PA SYS. A SMALLER PLANE WOULDN'T HAVE BEEN SO LUCKY. THE REASON I'M WRITING THIS IS BECAUSE IT SEEMS THAT AT BOS WE ARE PERPETUALLY RUSHED FOR TKOF AND LNDG. WHEN UNABLE OR UNWILLING TO COOPERATE DUE TO SAFETY; WE SEEM TO BE REPRIMANDED -- EITHER IN TONE OR DIRECTLY. IT HAPPENS THAT; QUITE FREQUENTLY; WE ARE CLRED TO LAND WHILE OTHER RWYS ARE IN USE AND SINCE OUR PATHS CROSS; WAKE TURB IS A FACTOR. SO; WE PLAN OUR LNDG (OR TKOF) ACCORDINGLY AND LAND LONG; ONLY TO BE HURRIED OFF THE RWY BY A STERN VOICE WHO INFORMS US SOMEONE ELSE IS ALREADY ON SHORT FINAL. I PRESUMED THE RWY WAS OURS WHEN WE ARE ON IT. WE ARE HAPPY TO OBLIGE WHEN ABLE; BUT THE CONSTERNATION OF THE CTLR IS APPARENT WHEN THEY EXPRESS ANGER THAT YOU MISSED THE FIRST TURNOFF. THE FIRST TURNOFF IS A PROBLEM FOR US UNLESS WE INTENTIONALLY GO BELOW THE GS OR PLAN TO FLY THROUGH SOMEONE'S LNDG OR DEPARTING TURB. BOTH ARE DANGEROUS. THE SUMMER HAS INTENSIFIED THIS SITUATION WITH THE NEED FOR HIGHER SPDS -- THUS LONGER LNDG AND DEP ROLLS. I KNOW BOS IS BUSY; BUT SOMETIMES; IT'S NOT SAFE. IN THEIR HURRY TO EXPEDITE TFC; THEY OVERLOOK OUR NEED FOR SAFETY.