R-73 archer missile question?

The rearward firing model of the Archer was a standard Archer. No booster could be fitted due to flight control problems. Basically a standard archer with a aerodynamic fairing over its rear to reduce drag during carriage on the aircraft. When launched backwards its thrust vector control vanes were crucial to making it work. The R-27 had also been tested as being a much larger weapon it was expected that the extra fuel on board would compensate for starting off flying backwards. However without thrust vectoring vanes as the R-27 ped through the period of zero rearward speed as it accelerated backwards it no longer had anything holding the weight of the missile body up and its nose stalled and dropped down facing the ground as its big erfly wings had no airflow and therefore stopped stabilising the weapon. The R-73 has thrust vector control vanes that managed to keep the nose pointing at the target through the problem phase of flying at zero speed and allowed the weapon to maintain continuous lock on the target. Range was dramatically shorter as you would expect.