U EgStd AGRICULTURAL AIRCRAFT playing increasingly important role helping meet nutritional requirements worlds burgeoning population massive capability distribute seed fight destructive actions pests nourish developing crops service about globe Piper Pawnee Brave last aerial applicators produced Piper designed distribute broad range farming necessities affordable costs provide improved safety comfort pilot rugged low maintenance requirements away base working fields Nine hundred thirty-eight made before production terminated 1983 Piper fallen victim economic hard times small-airplane manufacturing industry collapsed United States Braves configuration excellent rubber-powered Flying Scale model Except enlarged horizontal tail increased dihedral faithful representation 285 hp Continental engine powered models early production Later editions used powerful Lycoming engines slightly changed cowl shapes course meet objective trim-appearing lightweight craft various appendages added wing underbelly aerial applications simulated prototype aircraft early test program flew clean configuration CONSTRUCTION low-tech modelthe sort remaining popular host funflyers fact Brave conceived half-a-century ago likely would have designed flown model very similar project Though easy build large cockpit enclosure upswept wingtips may present new challenge some Select balsa eye strength required light weight possible Any popular adhesives may used still prefer long-popular cellulose cements joints Fuselage Construction conventional Assemble primary fuselage structure side frames atop other using firm longerons lightweight crossmembers Accurately shape position low density /32 sheet members side 24 Model Aviation ames fuselage wing mate establish desired wing incidence angle Place two side frames inverted over aft top view station F-7 tail post after having first cracked top bottom longerons F-3 F-8 sides will conform angular contour airplanes body Firmly glue cracked longerons reestablish structural integrity Once basic frame complete glue fuselage formers place add stringers Use long straight spline fine sandpaper glued face touch up irregularities shapes positioning formers before gluing low-density /32 sheet upper forward fuselage nose several narrow pieces care covered contoured lower nose 1/32 material others may find preferable fill section nose thicker sheet popular blue foam Notice triangular 1/j 6 sheet horizontal tail mounts rear fuselage Cut position right left care since will establish incidence angle tail later glued place Four pieces 1/8 sheet balsa glued together crossgrained used form nose Cut square holes receive removable nose plug well simulated air intake engine before joining parts Glue nose block forward sides station F- 1 Carefully trim sanding block dress nose adjacent sheetcovered areas configuration shown Rubber Motor Eight strands 1/ rubber 19 inches long Flying Weight 28 ounces Construction Built-up Covering/finish Japanese tissue/nitrate dope January1997 25 master Earl Stahl latest creation Photos provided author Graphic Design Carla Kunz Off test hop Author feels Brave could make good competition model though version intended relaxed sport flying
Edition: Model Aviation - 1997/01
Page Numbers: 24, 25
Edition: Model Aviation - 1997/01
Page Numbers: 24, 25
U EgStd AGRICULTURAL AIRCRAFT playing increasingly important role helping meet nutritional requirements worlds burgeoning population massive capability distribute seed fight destructive actions pests nourish developing crops service about globe Piper Pawnee Brave last aerial applicators produced Piper designed distribute broad range farming necessities affordable costs provide improved safety comfort pilot rugged low maintenance requirements away base working fields Nine hundred thirty-eight made before production terminated 1983 Piper fallen victim economic hard times small-airplane manufacturing industry collapsed United States Braves configuration excellent rubber-powered Flying Scale model Except enlarged horizontal tail increased dihedral faithful representation 285 hp Continental engine powered models early production Later editions used powerful Lycoming engines slightly changed cowl shapes course meet objective trim-appearing lightweight craft various appendages added wing underbelly aerial applications simulated prototype aircraft early test program flew clean configuration CONSTRUCTION low-tech modelthe sort remaining popular host funflyers fact Brave conceived half-a-century ago likely would have designed flown model very similar project Though easy build large cockpit enclosure upswept wingtips may present new challenge some Select balsa eye strength required light weight possible Any popular adhesives may used still prefer long-popular cellulose cements joints Fuselage Construction conventional Assemble primary fuselage structure side frames atop other using firm longerons lightweight crossmembers Accurately shape position low density /32 sheet members side 24 Model Aviation ames fuselage wing mate establish desired wing incidence angle Place two side frames inverted over aft top view station F-7 tail post after having first cracked top bottom longerons F-3 F-8 sides will conform angular contour airplanes body Firmly glue cracked longerons reestablish structural integrity Once basic frame complete glue fuselage formers place add stringers Use long straight spline fine sandpaper glued face touch up irregularities shapes positioning formers before gluing low-density /32 sheet upper forward fuselage nose several narrow pieces care covered contoured lower nose 1/32 material others may find preferable fill section nose thicker sheet popular blue foam Notice triangular 1/j 6 sheet horizontal tail mounts rear fuselage Cut position right left care since will establish incidence angle tail later glued place Four pieces 1/8 sheet balsa glued together crossgrained used form nose Cut square holes receive removable nose plug well simulated air intake engine before joining parts Glue nose block forward sides station F- 1 Carefully trim sanding block dress nose adjacent sheetcovered areas configuration shown Rubber Motor Eight strands 1/ rubber 19 inches long Flying Weight 28 ounces Construction Built-up Covering/finish Japanese tissue/nitrate dope January1997 25 master Earl Stahl latest creation Photos provided author Graphic Design Carla Kunz Off test hop Author feels Brave could make good competition model though version intended relaxed sport flying
