Oh, and by the way, the one that crashed at the Paris Air Show  
crashed not as a result of failure of the airplane, but as a result  
of a deliberate incursion into the flight path by a French fighter.   
NOT an accident, although I really don't think the fighter pilot  
expected the TU-144 to come apart in the air.

By flying directly into the flight path of the TU 144, the fighter  
caused the pilot of the TU  to "bunt" -- that is, pull up too  
sharply, stalling the engines and causing a severe temporary loss of  
power, leading to an aerodynamic stall at fairly low speed and  
altitude.  The recovery attempt resulted in a tail failure to from  
over-stressing the airframe in a desperate attempt to keep from  
pancaking.  Not a failure of design or execution of the airframe,  
it's very unlikely any aircraft would survive those conditions intact.

The flight path incursion was planned deliberately to make the TU-144  
look bad (remember, it was flying before the Concorde was ready) and  
there was significant interest in supersonic transport at the time,  
and there was no market for TWO SSTs.  I would presume the subsequent  
crash was NOT planned.

Peter


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