Martin B-57 Canberra - Variants

Variants

B-57A

First production version; eight built.

B-57B

Definitive production version, tandem cockpit, 8x 0.50 in (12.7 mm) machine guns or 4x 20 mm cannons, four underwing hardpoints; 202 built.

B-57C

Dual-control trainer, first flight: 30 December 1954; 38 built.

B-57E

Target tug, first flight: 16 May 1956; 68 built.

B-57G

B-57Bs modified as night intruders with FLIR, LLTV and laser designator in the nose, capable of using laser-guided bombs; 16 converted.

EB-57A

Electronic aggressor aircraft converted from RB-57As.

EB-57B

ECM aircraft converted from B-57Bs.

EB-57D

ECM aircraft converted from RB-57Ds.

EB-57E

Electronic aggressor aircraft converted from RB-57Es.

RB-57A

Photo reconnaissance version with cameras installed aft of the bomb bay; 67 built.

RB-57B

Photo-reconnaissance aircraft converted from B-57Bs.

RB-57D

see: Martin RB-57D Canberra

High-altitude strategic reconnaissance version, J57-P-9 engines, wingspan increased to 105 ft (32.00 m), first flight: 3 November 1955; 20 built.

RB-57E

see: Patricia Lynn Project

B-57Es modified to all-weather reconnaissance aircraft, used in "Patricia Lynn" missions during the Vietnam War; six converted.

RB-57F

see: Martin RB-57F Canberra

High-altitude strategic reconnaissance version developed by General Dynamics. Pratt & Whitney TF33 turbofan engines, wingspan increased to 122 ft (37.5 m), first flight 23 June 1963; 21 built.

WB-57D

Air Weather Service RB-57Ds used for nuclear atmospheric sampling testing.

WB-57F

Air Weather Service RB-57Fs re-designation after June, 1968