EXTRA INFO
PHOTO AEROPLANE PZL-106 KRUK 'SP-PBK' C/N 05005. ON OUTSIDE DISPLAY AT THE MUZEUM LOTNICTWA POLSKIEGO. KRAKOW POLAND. 23-8-2013. THE FOLLOWING INFO IS TAKEN FROM THE MUSEUM WEBSITE:- BEING THE FIRST POLISH PURPOSE-BUILT AGRICULTURAL AIRCRAFT THE PZL-106 KRUK (RAVEN) WAS DESIGNED AT THE WSK-PZL WARSZAWA OK?CIE BY ENG. ANDRZEJ FRYDRYCHEWICZ AND HIS TEAM. AN ALL-METAL LOW-WING BRACED MONOPLANE WITH FIXED TAIL-DRAGGER UNDERCARRIAGE. TWO-SPAR WING FITTED WITH FIXED SLATS IS METAL-COVERED FORWARD OF THE MAIN SPAR WITH FABRIC COVERED REAR PART. THE STEEL-TUBE WELDED FUSELAGE ACCOMMODATES HOPPER PLACED IN FRONT OF THE COCKPIT. SPECIAL ATTENTION HAS BEEN PAID TO ENSURE PILOT SAFETY SO THE COCKPIT IS AN INTEGRAL ASSEMBLY MOUNTED TO THE FUSELAGE TRUSS. TO AVOID COLLISION EFFECTS WITH ELECTRIC POWER LINES THE WIRE-CUTTING BLADES ARE PLACED ON THE WINDSHIELD CENTRE FRAME AND MAIN UNDERCARRIAGE STRUTS WHILE SPECIAL PROTECTING LINE IS SPREAD BETWEEN THE CANOPY AND THE VERTICAL FIN. THE DUST-TIDE COCKPIT IS FED BY FILTRATED OVERPRESSURISED AIR. A SEAT IS PROVIDED BEHIND THE PILOT FOR THE GROUND CREWMAN. DURING FERRY FLIGHTS THE CARGO BAY UNDER THE COCKPIT FLOOR MAY ACCOMMODATE THE DISPERSING ASSEMBLY. THE BASIC PART OF THE DISPERSING ASSEMBLY IS THE GLASS-FIBRE REINFORCED EPOXY-RESIN LAMINATE HOPPER PLACED IN THE FUSELAGE TRUSS BETWEEN THE ENGINE AND COCKPIT. THE FILING HATCH FOR DUST CHEMICALS IN HOPPER UPPER PART IS OPERATED PNEUMATICALLY BY THE PILOT. IN THE LOWER PART THERE IS AN EXIT HATCH WITH LOCKS FOR VARIOUS DISPERSING ASSEMBLIES. THE FERTILIZER-DUSTING ASSEMBLY COMPRISES GATE BOX ATTACHED TO SPREADER CARRIED ON THE FUSELAGE HARDPOINTS. THE SPRAY SYSTEM CONSISTS OF THE POMP/FILTER ASSEMBLY HOP PER FEEDING UNDERFUSELAGE TUBE AND THE UNDERWING SPRAY BOOMS WITH 90 NOZZLES. THE AIRCRAFT DISPLAYED (S/N 05005) IS ONE OF SEVEN PRE-SERIES MACHINES FEATURING T-TAIL. IT WAS FIRST FLOWN IN MARCH 1975 ALMOST TWO YEARS AFTER THE VERY SIMILAR FIRST PROTOTYPE. THE LIT-3S RADIAL POWERING THESE EARLY PLANES WAS THE PROTOTYPE MODIFICATION OF THE LIT-3 (POLISH-BUILT IVCHENKO AI-26) HELICOPTER ENGINE. IT BECAME A FORERUNNER OF THE PZL-3S AND -3SR ENGINES USED IN THE PRODUCTION PZL-106 AIRCRAFT. DURING 1975-1976 THESE PRE-SERIES AIRCRAFT WERE USED FOR FLIGHT TESTING OF VARIOUS ENGINES AND AGRICULTURAL ASSEMBLIES. ONE OF THE RAVENS WAS OPERATIONALLY TESTED IN EGYPT. THE AIRCRAFT DISPLAYED WAS HANDED OVER TO THE POLISH AVIATION MUSEUM BY EADS PZL WARSZAWA OK?CIE IN OCTOBER 2007. COPYRIGHT ALAN WILSOPHOTO PAPER THICKNESS NORMAL PHOTOGRAPH THICKNESS
NOTES
REF NO AWILSON-7763
PHOTO SIZE SIZE 6 X 4 inches
CONDITION: SOME CROPPING OR WHITE LINES TOP/BOTTOM MAY OCCUR DUE TO PHOTO RATIO
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