WesWorld

B-3 (Martin T4M) Carrierborne Torpedo Bomber

10 in service


Specifications
Length: 37' 8" 11.4 m
Height: 16' 0" 4.8 m
Wingspan: 53' 0" 16.1 m
Gross Weight: 7,897 lb 3,581 kg

Propulsion
Powerplant: Pratt & Whitney R-1690 525hp

Performance
Max Speed: 111 mph 178 km/h 96 kt
Ceiling: 8,400 ft 2,560 m

B-4 (FMA I.Ae 4s) Land/Carrierborne Torpedo Bomber

20 Land, 5 Carrierborne in service


Dimensions: span 12.19m; length 9.37m; height 3.57m

Structure: Metal monocoque fuselage, metal wing with aluminium spars, wooden ailerons and flaps with fabric covering. Wing folding with hydraulic assistance fitted to carrier-capable aircraft. Rudder and elevators aluminium framed with aluminium covering. Retractable main undercarriage with a non-retractable castoring tail wheel and arrestor hook on carrier-based examples

Weights: Empty 5788lbs; maximum take-off 8500lbs

Powerplant: two 700hp FMA RR-14-2 radials

Performance: max speed 251mph; service ceiling 23,000ft; range 488 miles

Capacity: Pilot and navigator in enclosed cockpit forward

Armament: three 7.62mm Browning machine guns in the lower nose, 1500lbs of bombs in bay in lower centre fuselage or one 18-21in torpedo on a ventral external rack

Equipment: full controls and navigation equipment including receiver/transmitter, HF/DF set, one flare chute, one optional ventral camera and Sperry Gyroscopic Automatic Pilot

B-21 (Spartan Sp-21M) Land Based Torpedo Bomber

10 in service


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