Single-seat jet fighter-bomber with two RD-10 engines,
installed under the wing. Su-9 often mentioned as "resembling the Me-262", but the Su-9 was far more advanced. And "Me-262 layout"
was so common among twin-engined aircraft....
'K' was equipped with booster-actuated airbrakes, installed between the engines and ailerons. Airbrakes were deploying both
upwards and downwards. To cut Landing Roll brake chute was used in addition to the airbrakes. Pilot had a catapult seat for
emergency bail out. Solid state RATO boosters U-5 became a standard option, one on each
side of the fuselage. Each U-5 provided 575kg trust during 8sec.
In addition to powerful array of barrel weapons (salvo 7.33kg/sec to 8.57kg/sec) Su-9 could carry two
FAB-250 or single FAB-500 bombs.
Full-size mockup was presented to the State Commetee on January 31, 1946.
Aircraft was built in 1946. On August 3,
1947 it was demonstrated to public during Tushino airforce parade. In December
1946 it successfully passed all trials and was recomended for series production.
But at the time P.O.Sukhoj had even more advanced and better performing
Su-11 'KL' aircraft ready, and Su-9 was abandoned.
Designation later was used for unrelated Su-9 known on the West as a "Fishpot".