|time to altitude= |wing loading kg/m2= |fuel consumption kg/km= |power/mass= |more performance=*Landing speed: |armament=GunsJ 21A-1 1× akan m/41A with 60 rounds in the nose 2x akan m/39A with 350 rpg in the nose 2x akan m/39A with 325 rpg in the wingsJ 21A-2 & A-3 1× akan m/45 with 140 rounds in the nose 2x akan m/39A with 350 rpg in the nose 2x akan m/39A with 325 rpg in the wingsJ(A) 21A-3 maximumInner wing mount(the inner wing mount was only used for rockets until the outer racks were developed) 4x minbomb m/37 general-purpose bombs, or sprängbomb m/42 or m/47 fragmentation bombs or bombkapsel m/43 cluster bombs 4x pansarraket m/46 Armour-piercing RP-3 rocket 4x sprängraket m/46 High-explosive semi-armour-piercing (SAP) RP-3 rocketOuter wing mount8x pansarraket m/46 Armour-piercing RP-3 rocket 8x Bofors pansarsprängraket m/49A & B High explosive anti-tank (HEAT) rocket 8x sprängraket m/46 High-explosive semi-armour-piercing RP-3 rocket or Bofors sprängraket m/51A & B high-explosive rocket 2x Bofors halvpansarraket m/49A & B Armour-piercing high-explosive anti-ship rocket (later used against general targets.)Belly1x minbomb m/37 general-purpose bomb 1x minbomb m/40 general-purpose bomb 1x minbomb m/50 general-purpose bomb 1x minbomb m/41 general-purpose bomb 1x minbomb m/50 general-purpose bombWingtips'2x vingspetstank drop tanks which could be armed in flight as incendiary bombs, and were tested with napalm. }} See also References Citations Bibliography Billing, Peter. "A Fork-Tailed Swede." Air Enthusiast No. 22, August–November 1983. Cattaneo, Gianni. The Fiat CR.42 (Aircraft in Profile number 170). Leatherhead, Surrey, UK: Profile Publications Ltd., 1967. No ISBN. Erichs, Rolph, Kai Hammerich, Gudmund Rapp et al. The Saab-Scania Story. Stockholm: Streiffert & Co., 1988. . This Happens in the Swedish Air Force (brochure). Stockholm: Information Department of the Air Staff, Flygstabens informationsavdelning, Swedish Air Force, 1983. No ISBN. Widfeldt, Bo. The Saab 21 A & R (Aircraft in Profile number 138). Leatherhead, Surrey, UK: Profile Publications, 1966. No ISBN. Wilson, Stewart. Combat Aircraft since 1945''. Fyshwick, AU: Aerospace Publications, 2000. . 21 1940s Swedish fighter aircraft Twin-boom aircraft Single-engined pusher aircraft Aircraft first flown in 1943 Low-wing aircraft