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1

Monday, November 9th 2009, 2:58am

Medium/light bombers



Medium/Light bombers in service as of 1938

Spartan B-1 Vanquish series (I - IV)
Accrisius B-5 (AC-4) Fortis
Spartan B-6 Crusader
Ripon-Bloch B-8 (RB-141)
Accrisius B-9 Albatros
Ripon-Bloch B-10 (RB-174)

2

Saturday, November 21st 2009, 8:14am

Spartan B-1 Vanquish series (I - IV)

Spartan B-1 Vanquish


Picture by James, aka "Hood"

Spartan B-1A Vanquish II

Sp-21M Vanquish II

Spartan SP-21M/IMPA SI-21S

A floatplane equipped Sp-21 variant initially for the Commando de Aviacion Naval for the reconnaissance role with a secondary attack role.
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. Two amphibious watertight floats fixed underwing with optional beaching wheels.
Weights: empty 11,670lbs, maximum take-off 18,800lbs Powerplant: two 1000hp Spartan 1000 supercharged radial engines
Performance: max speed 248mph; service ceiling 25,500ft; rate of climb 1,025ft per minute at 1,500ft; range 957 miles with 3,000lbs bomb load
Capacity: pilot in enclosed cockpit, 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, Sperry autopilot, reflector gun sight with torpedo aiming bar, two cameras fitted in navigators cabin floor, three flare chutes and two rescue dinghies.

Spartan/IMPA SI-21D Vanquish IV

General Type:
Airplane = 1
Airship = 2
Orbiter = 3
1

Year of First Flight: 1940

Description

Conventional Aircraft
Monoplane
Conventional Fuselage

A monoplane medium fast bomber armed with two dorsal 13mm and one nose 13mm MG and a bombload of 4,000lbs. Self-sealing fuel tanks, 5mm armoured bulkhead behind pilot.



Characteristics:

Weight (maximum) 19,000 lbs
Weight (empty) 11,651 lbs

Length 48 ft
Wingspan 67 ft
Wing Area 600 sq ft
Sweep 3 degrees

Engines 2
Ripon R-1600-04A
Piston

1,600 hp
at 10,000 ft


Crew 4


Typical cost $0.057 million in 1940
Total number procured 144


Performance:

Top Speed 285 kts = 328 mph
at 15,000 ft
Mach N/A

Operational Ceiling 34,500 ft

Range 773 nm = 890 miles
with 4,100 lbs payload
4,367 lbs released at halfway point

Climb 2,265 fpm

Cruise 175 kts = 201 mph
at 15,000 ft

Corner Speed 226 KIAS =
284 kts at 15,000 ft
Mach N/A
Turning Rate 23.8 deg/sec
Radius 2,317 ft



Internal Data:

Intake / Fan Diameter 9 ft

Bypass Ratio 67.55

Engine Weight 1645 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 0.5

Number of Nacelles 2
Length 7 ft
Diameter 3 ft
Fullness 0.3

Fuselage Diameter 5.1 ft
Fuselage Fullness 0.4

Pressurized Volume 0 percent
Cargo Decks 0

Cleanness 70 percent
Unstreamlined section 4 sq ft

User equipment 1,460 lbs

3

Saturday, November 21st 2009, 8:15am

Accrisius B-5 (AC-4) Fortis


Wingspan: 46 ft 11 in (14.30 m)
Length: 34 ft 4 in (10.46 m)
Height:
Empty weight: 6,550lbs
Loaded weight: 9,650lbs
Engine: Accrisius 1000 hp engine
Crew: 2
Max. speed: 302 mph at 13,000 ft
Range: 750 miles (1,200 km)
Service ceiling: 28,800 feet
Rate of climb: 1,640 feet per minute
Armament: typical 4-8× 7.62 mm in wings plus 1-2 in dorsal turret and external bombload of 1984lb's

Plans to upgrade aircraft include replacing several 7.62mm mg's with 12.7mm guns and a more powerfull engine to boost performance.

4

Saturday, November 21st 2009, 8:15am

Spartan B-6 Crusader

5

Saturday, November 21st 2009, 8:15am

Ripon-Bloch B-8 (RB-141)



Wingspan: 66 ft
Length: 58.9 ft
Height:
Empty weight: 13,649 lbs
Loaded weight: 22,000 lbs
Engine: 2x1,695hp Ripon R-1695-002S
Crew: 4
Max. speed: 357 mph at 15,000 ft
Range: 864 miles
Service ceiling: 33,500 ft
Rate of climb: 1,901 fpm
Armament: 1x dorsal 20mm, two nose-mounted 7.7mm MG, one ventral 7.7mm MG and a bombload of 2000kg.

Year of First Flight: 1938
Typical cost $0.088 million in 1939
Total number procured 500

6

Saturday, November 21st 2009, 8:15am

Accrisius B-9 Albatros


Wingspan: 59 ft
Length: 51.1 ft
Height:
Empty weight: 11,653 lbs
Loaded weight: 18,450 lbs
Engine: 2x1,200 hp Ripon R-1200-015A
Crew: 4
Max. speed: 309 mph at 10,000 ft
Range: 1,382 miles
Service ceiling: 29,500 ft
Rate of climb: 1,901 fpm
Armament: 2 forward-firing 12.7 mm MGs and two 12.7mm in a dorsal turret, 2,000lb bomload or one 21in torpedo.

Year of First Flight: 1938
Typical cost $0.063 million in 1938
Total number procured 500

7

Saturday, November 21st 2009, 8:15am

Ripon-Bloch B-10 (RB-174)


Wingspan: 59 ft
Length: 40.1 ft
Height:
Empty weight: 9,471 lbs
Loaded weight: 14,000 lbs
Engine: 2x1,200 hp Ripon R-1200-015A
Crew: 3
Max. speed: 331 mph at 15,000 ft
Range: 1,152 miles
Service ceiling: 34,000 ft
Rate of climb: 2,294 fpm
Armament: two 7.7mm MG in the wingroots, two dorsal and two ventral 7.7mm and a bombload of 400kg.

Year of First Flight: 1938
Typical cost $0.061 million in 1939
Total number procured 500





Ripon-Bloch RB-174

General Type:
Airplane = 1
Airship = 2
Orbiter = 3
1

Year of First Flight: 1938

Description

Conventional Aircraft
Monoplane
Conventional Fuselage

A twin engined three-seat light bomber. Armament comprises two 7.7mm MG in the wingroots, two dorsal and two ventral 7.7mm and a bombload of 400kg. Self-sealing tanks fitted.



Characteristics:

Weight (maximum) 14,000 lbs
Weight (empty) 9,471 lbs

Length 40.1 ft
Wingspan 59 ft
Wing Area 409 sq ft
Sweep 3 degrees

Engines 2
Ripon R-1200-015A
Piston

1,200 hp
at 10,000 ft


Crew 3


Typical cost $0.061 million in 1939
Total number procured 500


Performance:

Top Speed 288 kts = 331 mph
at 15,000 ft
Mach N/A

Operational Ceiling 34,000 ft

Range 1,000 nm = 1,152 miles
with 1,575 lbs payload
1,716 lbs released at halfway point

Climb 2,294 fpm

Cruise 200 kts = 230 mph
at 10,000 ft

Corner Speed 184 KIAS =
213 kts at 10,000 ft
Mach N/A
Turning Rate 18.6 deg/sec
Radius 2,219 ft



Internal Data:

Intake / Fan Diameter 9 ft

Bypass Ratio 81.85

Engine Weight 1410 lbs
Overall Efficiency 22.5 percent

Structural Factor 0.98

Number of Wings 1
Number of Fuselages 1

Limiting Airspeed 400 kts
Wing Ultimate g Load 6.00 g
Wing Taper 0.3
Wing Thickness at Root 1.4 ft

Tail / Canard Factor 0.4

Number of Nacelles 2
Length 6 ft
Diameter 2.75 ft
Fullness 0.5

Fuselage Diameter 5 ft
Fuselage Fullness 0.3

Pressurized Volume 0 percent
Cargo Decks 0

Cleanness 72 percent
Unstreamlined section 5.1 sq ft

User equipment 800 lbs

8

Thursday, March 16th 2017, 10:47pm

Accrisius B-11

Accrisius B-11 (Accrisius B-9 Albatros replacement)

General Type:

Airplane = 1
Airship = 2
Orbiter = 3
1

Year of First Flight: 1940

Description

Conventional Aircraft
Monoplane
Conventional Fuselage

A monoplane medium fast bomber armed with two dorsal 12.7mm in a streamlined turret, one nose 12.7mm MG and and a bombload of 4,000lbs. Self-sealing fuel tanks, 8mm armoured bulkhead.



Characteristics:

Weight (maximum) 25,000 lbs
Weight (empty) 14,838 lbs

Length 52 ft
Wingspan 70 ft
Wing Area 649 sq ft
Sweep 3 degrees

Engines 2
Ripon R-1800-009SS-HR/RL
Piston

1,800 hp
at 10,000 ft


Crew 4


Typical cost $0.086 million in 1940
Total number procured 500


Performance:

Top Speed 306 kts = 352 mph
at 15,000 ft
Mach N/A

Operational Ceiling 37,250 ft

Range 1,729 nm = 1,991 miles
with 3,521 lbs payload
4,001 lbs released at halfway point

Climb 2,862 fpm

Cruise 217 kts = 250 mph
at 15,000 ft

Corner Speed 243 KIAS =
305 kts at 15,000 ft
Mach N/A
Turning Rate 27.8 deg/sec
Radius 2,127 ft



Internal Data:

Intake / Fan Diameter 11 ft

Bypass Ratio 81.6

Engine Weight 1890 lbs
Overall Efficiency 22.5 percent

Structural Factor 1.00

Number of Wings 1
Number of Fuselages 1

Limiting Airspeed 350 kts
Wing Ultimate g Load 9.00 g
Wing Taper 0.3
Wing Thickness at Root 1.8 ft

Tail / Canard Factor 0.3

Number of Nacelles 2
Length 8.7 ft
Diameter 3.75 ft
Fullness 0.3

Fuselage Diameter 6 ft
Fuselage Fullness 0.42

Pressurized Volume 0 percent
Cargo Decks 0

Cleanness 79 percent
Unstreamlined section 4.5 sq ft

User equipment 1,700 lbs
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9

Friday, November 10th 2017, 1:23pm

Spartan Saber (B-12)

Crew: four
Length: 13.80 m (45 ft 3 in)
Wingspan: 18.86 m (61 ft 10 in)
Height: 4.13 m (13 ft 7 in)
Empty weight: 7,601 kg (16,757 lb)
Loaded weight: 10,538 kg (23,232 lb)
Max. takeoff weight: 11,768 kg (25,944 lb)
Powerplant: 2 × Ripon radial engine, 1,850 hp each

Performance
Maximum speed: 528 km/h [8] (281 kn, 325 mph)
Range: 2,020 km (1,090 nmi, 1,260 mi)
Service ceiling: 9,000 m (29,528 ft)
Rate of climb: 1,610 ft/min

Armament: 2x wing mounted 20mm, three ventral mounted 7.7mm MG and a bombload of 2000kg.

Year of First Flight: 1942