Spartan B-4 Valiant
Dimensions: Length 66.2 ft, Wingspan 140 ft
Engines: 4 R-1495-023S inlines
Performance: 1,495 hp at 15,000 feet, Top Speed 256 kts = 294 mph at 15,000 ft, Operational Ceiling 25,000 ft, Range 1,220 nm = 1,405 miles
with 10,607 lbs payload, Climb rate 621 fpm, Cruise 187 kts = 215 mph
at 15,000 ft
Armament: 6x7.7mm LMG in two dorsal turrets (nose and central) and two fixed ventral 7.7mm LMG (engine mounts), 10,000lbs bomb load.
Spartan B-1 Vanquish
Picture by James, aka "Hood"
Spartan B-1A Vanquish II
Sp-21M Vanquish II
Plane builder stats
Spartan B-4 Valiant Heavy bomber
Year of First Flight: 1935
Description
Conventional Aircraft
Monoplane
Conventional Fuselage
A monoplane four-engined heavy bomber. Armament: 4x7.7mm LMG in two dorsal turrets, one in nose and two fixed ventral 7.7mm LMG, 10,000lbs bomb load.
Characteristics:
Weight (maximum) 80,000 lbs
Weight (empty) 56,943 lbs
Length 66.2 ft
Wingspan 140 ft
Wing Area 1,356 sq ft
Sweep 3 degrees
Engines 4
Ripon R-1495-023S
Piston
1,495 hp
at 15,000 ft
Crew 6
Typical cost $0.436 million in 1936
Total number procured 500
Performance:
Top Speed 256 kts = 294 mph
at 15,000 ft
Mach N/A
Operational Ceiling 25,000 ft
Range 1,220 nm = 1,405 miles
with 10,607 lbs payload
11,417 lbs released at halfway point
Climb 621 fpm
Cruise 187 kts = 215 mph
at 15,000 ft
Corner Speed 283 KIAS =
355 kts at 15,000 ft
Mach N/A
Turning Rate 17.1 deg/sec
Radius 4,035 ft
Internal Data:
Intake / Fan Diameter 9.5 ft
Bypass Ratio 75.95
Engine Weight 1909 lbs
Overall Efficiency 22.5 percent
Structural Factor 1.00
Number of Wings 1
Number of Fuselages 1
Limiting Airspeed 450 kts
Wing Ultimate g Load 9.00 g
Wing Taper 0.3
Wing Thickness at Root 3 ft
Tail / Canard Factor 0.5
Number of Nacelles 4
Length 30 ft
Diameter 3.5 ft
Fullness 0.2
Fuselage Diameter 8 ft
Fuselage Fullness 0.3
Pressurized Volume 12 percent
Cargo Decks 0
Cleanness 70 percent
Unstreamlined section 2 sq ft
User equipment 3,250 lbs
Spartan B-1 Vanquish, medium bomber
Year of First Flight: 1932
Description
Conventional Aircraft
Monoplane
Conventional Fuselage
A monoplane medium fast bomber
Characteristics:
Weight (maximum) 14,800 lbs
Weight (empty) 9,434 lbs
Length 40 ft
Wingspan 67 ft
Wing Area 600 sq ft
Sweep 3 degrees
Engines 2
Spartan 1000
Piston
1,000 hp
Crew 3
Typical cost $0.041 million in 1932
Total number procured 150
Performance:
Top Speed 209 kts = 240 mph (389 kmh)
at 15,000 ft
Mach N/A
Operational Ceiling 27,000 ft
Range 1,267 nm = 1,459 miles
with 1,800 lbs payload
2,000 lbs released at halfway point
Climb 1,481 fpm
Cruise 135 kts = 155 mph
at 15,000 ft
Corner Speed 200 KIAS =
251 kts at 15,000 ft
Mach N/A
Turning Rate 25.5 deg/sec
Radius 1,908 ft
Internal Data:
Intake / Fan Diameter 8.5 ft
Bypass Ratio 85.65
Engine Weight 1175 lbs
Overall Efficiency 22.5 percent
Structural Factor 0.98
Number of Wings 1
Number of Fuselages 1
Limiting Airspeed 250 kts
Wing Ultimate g Load 9.50 g
Wing Taper 0.3
Wing Thickness at Root 2.1 ft
Tail / Canard Factor 0.4
Number of Nacelles 2
Length 6 ft
Diameter 2.15 ft
Fullness 0.3
Fuselage Diameter 5.1 ft
Fuselage Fullness 0.4
Pressurized Volume 0 percent
Cargo Decks 1
Cleanness 57 percent
Unstreamlined section 1.8 sq ft
User equipment 1,000 lbs
Sp-21A Vanquish II, medium bomber
Dimensions: span 20.42m; length 14.63; height 3.84m; wing area 600sq ft; wing loading 31.33 lb/sq ft; power loading 0.234kg/hp 0.10 lb/hp
Structure: all-metal monocoque fuselage in three sections with Z section fames and L section stringers with light alloy covering, light alloy used for tail construction and cantilever tailplane covering. Cantilever all-metal wing with two steel spars, all-metal split flaps and aluminium framed ailerons with fabric covering. Rudder and elevators aluminium framed with fabric covering. Retractable hydraulically raised main undercarriage with two oleo-pneumatic legs with twin pneumatic brakes and a non-retractable castoring tail wheel
Weights: empty 10,825lbs, maximum take-off 18,800lbs
Powerplant: two 1000hp Spartan 1000 supercharged radial engines
Performance: max speed 262mph; service ceiling 26,500ft; rate of climb 1,078ft per minute at 1,500ft; range 1152 miles with 4,000lbs bomb load
Capacity: pilot in enclosed cockpit, navigator/bomb aimer in nose with a glazed bomb-aiming position, radio operator in rear fuselage compartment with two windows ahead of gunner in a hydraulic-powered dorsal turret
Armament: one dorsal turret with two 7.92mm FMG/M32 MG (drum feed), one 7.92mm FMG/M32 MG (drum feed) on swivel mount in nose, two 7.92mm FMG/M32Ar MG (belt feed) in wingroots, bombload 4000lbs in one lower fuselage bomb bay or one semi-recessed 18in torpedo
Equipment: full controls and navigation equipment including receiver/transmitter, HF/DF set, naval co-operation beacon and Sperry autopilot, two cameras can be fitted in cabin floor, one flare chute, two rescue dinghies and mechanical bombsight.
Sp-21M Vanquish II
Dimensions: span 20.42m; length 12.19; height 3.84m; wing area 600sq ft; wing loading 31.33 lb/sq ft; power loading 0.234kg/hp 0.10 lb/hp
Structure: all-metal monocoque fuselage in four sections with Z section fames and L section stringers with light alloy covering, light alloy used for tail construction and cantilever tailplane covering. Cantilever all-metal wing with two steel spars, all-metal split flaps and aluminium framed ailerons with fabric covering. Rudder and elevators aluminium framed with fabric covering. Retractable hydraulically raised main undercarriage with two oleo-pneumatic legs with twin pneumatic brakes and a non-retractable castoring tail wheel
Weights: empty 11,670lbs, maximum take-off 18,800lbs Powerplant: two 1000hp Spartan 1000 supercharged radial engines
Performance: max speed 267mph; service ceiling 26,500ft; rate of climb 1,094ft per minute at 1,500ft; range 1200 miles with 3,000lbs bomb load
Capacity: pilot in enclosed cockpit with bullet-proof windscreen, navigator in rear fuselage cabin with one window and one access door ahead of radio operator/gunner in a hydraulic-powered dorsal turret
Armament: one dorsal turret with two 7.92mm FMG/M32 MG (drum feed), four fixed 13mm Browning HMG in the lower nose under the cockpit, bombload 3000lbs in one lower fuselage bomb bay or one semi-recessed 18-21in torpedo
Equipment: full controls and navigation equipment including receiver/transmitter, HF/DF set, naval co-operation beacon and Sperry autopilot, two cameras can be fitted in cabin floor, one flare chute, two rescue dinghies and mechanical bombsight.