hall hall prototype american twin engined seaplane submitted united_states_navy response specification new bomber scout aircraft constructed innovative fashion extensive use aluminum proved successful flight testing failed win favor production contract awarded single aircraft built served experimental duties destruction hurricane design development late issued specification new scout bomber torpedo bomber designs companies submitted total designs response evenly split submitted seaplane design single prototype ordered navy evaluation june given designation aircraft receive mission type letters designation system hall choice twin float seaplane configuration dictated navy requirement new torpedo bomber design capable carrying standard naval torpedo type carried destroyers ordered intended fitted wright cyclone radial engines delays design caused hall relocating production facility difficulties contract doubts aircraft performance potential led redesign aircraft slightly smaller engines changed pair changes aircraft resulted receiving revised designation standard aluminum tubular fuselage wing leading edges covered aluminum rest wing control surfaces fabric covered aircraft armed defensively 1930s standards powered turret designed hall mounted nose carrying single caliber machine gun hand traversed pair machine guns fitted dorsal ventral belly positions aft flat glass panel fitted nose turret use aircraft offensive weaponry consisting mark aerial torpedo alternatively pounds bombs carried internal bomb bay twin float arrangement allowing clear release weaponry operational history delivered navy january aircraft officially presented public hall bristol pennsylvania factory april year aircraft early flight testing starting february conducted test pilot showed faults significant issue lack roll authority reduction ability turn aircraft result surface area modification increase area rudder solved issue aircraft water handling characteristics found excellent significant complaints surfaced testing period concerned gear found extremely difficult use water met design specifications rated overall good flight testing failed meet contractual requirements speed attack speed addition consider torpedo bomber aircraft operational requirement fact aircraft restricted operation water considered negative aircraft role led viewed jack trades purpose designed aircraft role considered superior company blamed navy politics lack production order following conclusion test program experimental duties naval torpedo station newport rhode_island participating trials aerial torpedoes service newport came end september destroyed great new england hurricane aircraft designed company remained business bought specifications data general characteristics crew pilot navigator flight mechanic gunner radio operator gunner length wingspan height wing area weight gross weight max takeoff weight powerplant radial engines propellers bladed constant speed performance maximum speed mph cruise speed mph range nmi combat range nmi torpedo service ceiling pounds mission weight time altitude minutes feet wing loading armament guns caliber machine guns nose turret dorsal position machine gun ventral position bombs torpedo pounds bombs
Hall XPTBH