1 specifications (ash-82)
1.1 general characteristics
1.2 components
1.3 performance
specifications (ash-82)
data
general characteristics
type: 14-cylinder two-row radial engine
bore: 155.5 mm (6.122 in)
stroke: 155.0 mm (6.102 in)
displacement: 41.2107 l (2,515.3 cu in)
length: 2.01 m (6ft 7.1 in)
diameter: 1.26 m (49.6 in)
dry weight: m-82-112 model: 860 kg (1,894 ib), m-82fn model: 890 kg (1,962 ib), m-82fnv model: 900 kg (1,984 lb), m-82t model: 1,020 kg (2,246 lb)
components
valvetrain: pushrod, 2 valves per cylinder sodium-cooled exhaust valve.
supercharger: single-stage, 1 tk-2 two-speed centrifugal type supercharger on production. 2 tk-3 two-speed exhaust gas-driven forced-induction compressor on fn , fnv models. m-82t: single-speed centrifugal supercharger after-cooler. gear ratio 7.27:1. critical altitude: 2,000 m (6,561 ft). optionally, m-82t had 2 speed supercharger after-cooler; second speed gear ratio 10,2:1. critical altitude: 4,000 m (13,123 ft). manifold pressure limit: 1.64 atm (49.2 ) takeoff , 1.34 atm (40.15 ) @ second speed.
fuel system: carburettors (early production), direct fuel injection automatic mixture control. petrol pump: bnk-10kt.
fuel type: 90 octane (minimum grade allowed), 92, 95 or 100 octane
oil system: 2 pumps: geared rotation pump msh-6sv (rear) , swarm pump pmn-t (front). normal oil temp: 40 90°c. limit temp: 115°c. minimum oil pressure @ low gas: 3 kg/cm2 (42.7 psi). minimum oil pressure @ cruise: 4.5 kg/cm2 (front pump), 5.5 kg/cm2 (rear pump) (64 psi front , 78.2 psi rear)
cooling system: air-cooled. minimum permissible cylinders temp operation: 120°c. maximum permissible cylinders temp: 250°c. maximum permissible @ cruise: 225°c. normal cylinders temp @ cruise: 160 180°c
reduction gear: 11:16 (prototypes & m-82-111), 9:16 (m-82-112 , later models)
performance
power output:
m-82-111 carburettors:
1,570 hp (1,170 kw) @ 2,400 rpm take-off (dry), boost rated @ 1.55 atm (46.3 )
1,540 hp (1,148 kw) @ 2,400 rpm @ 2,000 m (6,600 ft)
1,330 hp (992 kw) @ 2,400 rpm @ 5,500 m (18,000 ft)), boost rated @ 1.29 atm (38.6 )
820 hp (612 kw) @ 2,400 rpm @ 8,500 m (27,900 ft)
m-82f carburettors:
1,650 hp (1,230 kw) @ 2,400 rpm take-off (dry), boost rated @ 1.55 atm (46.3 )
1,430 hp (1,067 kw) @ 2,400 rpm @ 5,000 m (16,000 ft)
800 hp (597 kw) @ 2,400 rpm @ 10,000 m (33,000 ft)
m-82fnv , m-82fn direct fuel injection:
1,850 hp (1,380 kw) @ 2,500 rpm take-off (dry), boost rated @ 1.60 atm (47.88 )
1,650 hp (1,230 kw) @ 2,400 rpm @ 1,650 m (5,410 ft), boost rated @ 1.36 atm (40.7 )
1,450 hp (1,082 kw) @ 2,400 rpm @ 4,650 m (15,260 ft), boost rated @ 1.36 atm (40.7 )
810 hp (604 kw) @ 2,400 rpm @ 10,500 m (34,400 ft)
m-82t 2 speed supercharger:
1,900 hp (1,416 kw) @ 2,600 rpm take-off, boost rated @ 1.64 atm (49.2 )
1,630 hp (1,215 kw) @ 2,400 rpm @ 2,000 m (6,600 ft), boost rated @ 1.34 atm (40.1 )
1,530 hp (1,082 kw) @ 2,400 rpm @ 4,000 m (13,000 ft), boost rated @ 1.34 atm (40.1 )
721 hp (537 kw) @ 2,400 rpm @ 9,500 m (31,200 ft)
specific power: m-82f: 29.84 kw/l (0.655 hp/in³), m-82fnv: 33.48 kw/l (0.735 hp/in³)
compression ratio: 7.05:1 (6.90:1 m-82t)
specific fuel consumption:
m-82f: 355 g/hp•h (0.78 ib/hp•hr) take-off, 320 g/hp•hr (0.70 ib/hp•hr) @ nominal power
m-82fnv: 360 g/hp•h (0.79 ib/hp•hr) take-off, 325 g/hp•hr (0.71 ib/hp•hr) @ nominal power
m-82t: 350 325 g/hp•h (0.76 0.71 ib/hp•hr) take-off, 260 280 g/hp•hr (0.568 0.611 ib/hp•hr) @ cruise power
power-to-weight ratio: 1.46 kw/kg (0.89 hp/lb)
^ cite error: named reference order_1963 invoked never defined (see page).
^ liss, witold (1967). lavochkin la 5 & 7, number 149. profile publications ltd., p.o. box, 1a north street, leatherhead, surrey, uk. pp. 3, 5–6, 8–9.
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