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Douglas A-20 Havoc

A-20 Havoc, a slim three-seat fast twin-engined light bomber whose design dates back to 1933. The cantilever monoplane is mounted on the shoulder and a tricycle undercarriage is fitted. Entered USAAF service in 1937. Dimensions 61.4/ 48/ 17.7/ 465 sq ft; two 1,600hp Wright R-2600 Cyclone radials; max speed 317mph; cruising speed 230mph; service ceiling 25,000ft; range 1,025 miles with 2,000ln bomb load; armament four fixed .30in Browning MGs in the nose, one ventral 0.30in and two dorsal 0.50in Browning MG and up to 2,400lbs of bombs.
Variants and production figures:
1 XA-20 prototype
190 A-20A
30 F-3 a photo-reconnaissance version converted from A-20A
30 A-20B with nose-mounted guns altered to two .50in Browning MGs
140 A-20C with changes to electrical system and ancillary engine equipment, two R-2600-23 engines but reverted to four.30in nose MGs

Atlantic A-10 Demon

Atlantic A-10 Demon, a two-seat monoplane dive bomber designed in 1935 which has been exported to Iberia and Kongo and replaced the earlier Atlantic A-7 in USAAF service. Dimensions 50/ 33/ 456 sq ft; one 1,000hp Pratt & Whitney R-1830-S1B3G radial; max speed 260mph; service ceiling 23,000ft; rate of climb 1,331ft/min; range 750 miles; armament two synchronised .30in Browning MGs and a manual dorsal turret with two 0.30in MGs and up to 2,000lbs of bombs.
Variants and production figures: 180 A-10

Martin A-21 Maryland

Martin 167 A-21 Maryland, a twin-engined three-seat light bomber with a glazed nose, dorsal turret and ventral gunner’s position. First flown in February 1936 and entered service in 1937. Dimensions 61.4/ 46.8/ 14.11/ 538.5 sq ft; two 1,050hp Pratt & Whitney R-1830-SC3G Twin Wasp; max speed 304mph at 13,000ft; service ceiling 29,500ft; range 1,300 miles; armament four wing-mounted .30in Browning MGs and one in each dorsal and ventral position and up to 2,000lbs of bombs.
Variants and production figures:
1 XA-21 prototype first flown February 1936
80 A-21

Consolidated A-31 Vengeance

Consolidated A-31 Vengeance, a two-seat dive bomber with a mid-wing monoplane and hydraulically-operated dive-brakes developed for the USAAF. First flight in 1936 and entered service in 1938. Dimensions 48/ 39.9/ 15.4/ 332 sq ft; 1,700hp Wright GR-2600-A5 Cyclone; max speed 279mph; cruising speed 230mph; service ceiling 22,300ft; max range 2,300 miles; armament four wing-mounted 0.5in Browning MGs with another in a dorsal mount and up to 1,000lbs of bombs in an internal bay with two 250lb bombs on underwing racks.
Variants and production figures: 243 A-31

Curtiss A-35 Shrike

Curtiss A-35 Shrike, a two-seat dive-bomber based on the general design of the Curtiss SB2C Helldiver. The wing-folding has been removed and the monoplane wing has split flaps that double as dive-brakes and with leading-edge slats. The prototype first flew in July 1938 and the first production aircraft was delivered in December 1939. Dimensions 49.9/ 36.8/ 13.2/ 422 sq ft; 1,700hp Wright R-2600-18 Cyclone; max speed 295mph; cruising speed 158mph; service ceiling 29,100ft; range 1,165 miles; armament four wing-mounted 0.50in Browning MGs, one .50in Browning MG in a dorsal position and a bomb load of 1,000lbs with two 500lb bombs on underwing racks.
Variants and production figures:
2 XA-35 prototypes
90 A-35A production aircraft

Douglas A-26 Invader

Douglas A-26 Invader, developed to a 1939 requirement for an A-20 replacement with similar layout but with more powerful engines. The crew numbers three and the wings have electrically-operated single-slotted flaps and the armament includes dorsal and ventral remotely-controlled barbettes controlled by the gunner. The first XA-26 flew on 10 July 1940 and production is planned to start in mid-1942. Dimensions 70/ 51.3/ 18.3/ 540 sq ft; two 2,000hp Pratt & Whitney R-2800 radials; max speed 373mph; cruising speed 284mph; service ceiling 22,100ft; range 1,400 miles; armament two fixed .50in Browning MGs in the nose, two 0.50in each in a dorsal and ventral remotely-controlled barbette and up to 3,000lbs of bombs.
Variants and production figures:
1 XA-26 prototype first flown on 10 July 1940
1 XA-26A prototype with four 20mm cannon in a solid nose, first flown March 1941
1 XA-26B prototype with a 75mm cannon in a solid nose, first flight planned 1942
A-26 production bomber with glazed nose, 250 on order from 1942
A-26A production ground-attack bomber with eight 0.5oin Browning MGs in a solid nose and 4,000lb bomb load, 150 on order from 1943
FA-26C photo-reconnaissance variant of A-26, 25 on order from 1942