Sukhoi Su-7B Fitter-A
TYPE:
Single-seat ground attack fighter.
DESIGN FEATURES:
Cantilever mid-wing monoplane. Wing thickness/chord
ratio 8 per cent. No dihedral or anhedral. Sweepback
60o on leading-edges. Wing chord is extended giving a
straight trailing-edge on inboard section of each wing.
Two boundary layer fences on each wing at approximately
mid-span and immediately inboard of tip. Two intake
suction relief doors on each side of nose. Two slim
duct fairings along top of centre-fuselage.
LANDING GEAR:
Retractable tricycle type, with single wheel on each
unit. Steerable nosewheel retracts forward, main units
inward into wings. Differential brakes on mainwheels.
Twin brake-chutes in large container with clamshell
doors, at base of rudder.
POWER PLANT:
One Lyulka AL-7F-1-100 (TRD-31) turbojet engine, rated
at 66.64 kN (14,980 lb st) dry and 94.08 kN (21,150 lb
st) with afterburning. Time taken for afterburner light
up 6 to 7 seconds. Variable area afterburner nozzle.
Saddle fuel tanks in centre-fuselage and integral tanks
between spars of inner wings. Total internal fuel
capacity 2,940 litres (776 US gallons; 647 Imp
gallons). Gravity fuelling points above fuselage tanks
and each wing tank. Provision for two drop tanks side
by side under fuselage, with total capacity of 1,200
litres (317 US gallons; 264 Imp gallons); and two ferry
tanks, total capacity 1,800 litres (475 US gallons; 396
Imp gallons) on inner wing pylons. Two SPRD-100 solid
propellant rocket units, each 29.4 kN(6,610 lb st), can
be attached under rear fuselage to shorten T-O run.
AVIONICS AND EQUIPMENT:
Standard avionics include VHF/UHF radio, ILS, RSIU very
short-wave fighter radio, ADF, transponder, SRO-2M
(NATO 'Odd Rods') IFF, Sirena 3 tail warning radar,
ranging radar in air intake centrebody, autopilot.
Launcher for Very cartridges or chaff under starboard
wingroot leading-edge. Provision for vertical and
oblique cameras in belly aft of nosewheel bay.
ARMAMENT:
Two 30 mm NR-30 guns, each with 70 rounds, in wingroot
leading-edges. ASP-5ND gyro gunsight. Six external
stores pylons. Two underbelly pylons and inner
underwing pylons each capable of carrying 750 kg (1,650
lb); outer underwing pylons each stressed for 500 kg
(1,100 lb). Stores include UB-16-57U rocket pods (each
16 57 mm S-5, S-5M or S-5K rockets), S-24 250 kg
concrete-piercing guided rockets, S-3K unguided
rockets, and free-fall bombs (usually two 750 kg and
two 500 kg), including nuclear weapons. When underbelly
fuel tanks are fitted, maximum external weapons load is
1,000 kg (2,205 lb).
DIMENSIONS: EXTERNAL:
Wing span: 8.77 m (28 ft 9{1/4} in)
Length overall, incl probe: 16.80 m (55 ft 1{1/2} in)
Height overall: 4.80 m (15 ft 9 in)
AREAS:
Wings, gross: 23.0 m{2} (247 sq ft)
WEIGHTS: AND LOADINGS:
Operating weight empty: 8,328 kg (18,360 lb)
Normal T-O weight: 12,000 kg (26,450 lb)
Max T-O weight: 13,440 kg (29,630 lb)
PERFORMANCE:
Max level speed at 12,200 m (40,000 ft):
'clean':
Mach 1.6 (917 kts; 1,700 km/h; 1,055 mph)
with external stores:
Mach 1.2 (685 kts; 1,270 km/h; 788 mph)
Max level speed at S/L:
without afterburning: 460 kts (850 km/h; 530 mph)
with afterburning: 625 kts (1,158 km/h; 720 mph)
LENGTH (m): 16.80
HEIGHT (m): 4.80
WING SPAN (m): 8.77
MAX T-O WEIGHT (kg): 13440
MAX LEVEL SPEED (knots): 917
MAX RANGE (nm): 780
SERVICE CEILING (m): 18000
T-O RUN (m): 2400
MAX RATE CLIMB (m/min): 9000