Sweden's first turbo jet-powered fighter was a modification of the
piston powered SAAB J21A,
accept a de Havilland Goblin gas turbine. Four such aircraft were
testing. The problems encountered in such a conversion were such
that the original order
model 21Rs was reduced to only 60, since by that time other
alternatives were appearing.
The aircraft were used primarily
in the attack role rather than as designed, i.e. single-seat fighters.
The shot above
illustrates how the air intakes were positioned for this
jet-conversion, while the
image below shows up the plan form nicely.