THE ACFT PLT AND GND CREW WERE CONDUCTING GND HANDLING AND MOORING PROCEDURES. THE PLAN WAS TO ASCEND ABOUT 10 FT AGL OVER THE FLD. THE FLD WAS IN A DEPRESSION SURROUNDED BY TALL TREES AND SE OF A 400 FT AGL RADIO TWR. DURING LIFT OFF THE GND CREW HELD THE ACFT DOWN WHILE THE PLT HEATED THE BAG. THE 'BURNS' AND 'HOLD DOWN' WAS LONGER THAN ANTICIPATED AND AT LAUNCH THE ACFT ROSE HIGHER THAN PLANNED. THE ALT WAS SUCH THAT THE ACFT ROSE ABOVE THE TREES AND STARTED BEING AFFECTED BY THE 5-7 KT WIND FROM THE SSE. THE PLT MANEUVERED THE ACFT N OF THE FLD AND NNW OF THE TWR. AFTER ASSURING THE ACFT WAS CONTROLLABLE WITH THE ENG AND BURNERS AN APCH WAS INITIATED BACK TO THE FLD. DURING THE APCH THE DESCENT WAS NOT AS ANTICIPATED AND THE ENG WAS SET TO IDLE. DURING THIS TIME THE WIND SHIFTED, PLACING THE ACFT UPWIND OF THE TWR. THE APCH WAS ABANDONED IN FAVOR OF MANEUVERING AWAY FROM THE TWR. THE ENG FAILED TO RESPOND AND A CLIMB OVER THE TWR WAS INITIATED. THE ACFTS NOSE GND LINE CAUGHT IN THE TWR.