Latest WW2 mag has Stalingrad on the cover & makes interesting commentage on why airlift was a failure.

"Even if the neccessary aircraft could be found,Luftwaffe personnel were at the mercy of Stalin's most formidable assets, the weather. Wind, snow and bitter cold closed available airfields one out of 3 days. Of the six airfields within the 15-mile perimeter of Der Kessel- The cauldron, containing the trapped army, only 2 were equipped with the radio beacons that would allow for a nonvisual approach and only one of these -Pitomnik- could be used at night. and had facilities for large scale maintenance and loading operations".

Very different from other Luftwaffe supply operations in other theaters.

Another point it brought up that I wonder about the feasibility of was " Ulitimately, this was all Hitlers fault. At almost any point after the encirclement he could have ordered his troops in the cauldron to attempt a breakout while they were still able. Had it succeeded, a reinforced Sixth army could have renewed its offensive in the spring, crossing the Volga at other places and bypassing Staligrad in favor of open country more favorable to its mechanized columns.