il2

Tempest Mk.V ser.2

tempestmkvs2

Description

Indicated stall speed in flight configuration: 150…174 km/h
Indicated stall speed in takeoff/landing configuration: 128…149 km/h

Dive speed limit: 870 km/h
Maximum load factor: 12.0 G
Stall angle of attack in flight configuration: 17.5 °
Stall angle of attack in landing configuration: 13.7 °

Maximum true air speed at sea level, 3700 RPM, boost +9: 600 km/h
Maximum true air speed at 1950 m, 3700 RPM, boost +9: 664 km/h
Maximum true air speed at 5640 m, 3700 RPM, boost +9: 703 km/h

Service ceiling: 10800 m
Climb rate at sea level: 21.0 m/s
Climb rate at 3000 m: 15.1 m/s
Climb rate at 6000 m: 12.1 m/s

Maximum performance turn at sea level: 20.0 s, at 270 km/h IAS.
Maximum performance turn at 3000 m: 27.8 s, at 270 km/h IAS.

Flight endurance at 3000 m: 3 h 18 m, at 350 km/h IAS.

Takeoff speed: 150…170 km/h
Glideslope speed: 170…200 km/h
Landing speed: 150..155 km/h
Landing angle: 11.6 °

Note 1: the data provided is for international standard atmosphere (ISA).
Note 2: flight performance ranges are given for possible aircraft mass ranges.
Note 3: maximum speeds, climb rates and turn times are given for standard aircraft mass.
Note 4: climb rates and turn times are given for 3700 RPM and boost +9.

Engine:
Model: Napier Sabre IIA
Maximum power in Combat mode (3700 RPM, boost +9, low gear) at sea level: 2180 HP
Maximum power in Combat mode (3700 RPM, boost +9, high gear) at 11500 feet: 1830 HP

Engine modes:
Max Cruising power (unlimited time): 3150 RPM, boost +4.5
Climb power (up to 1 hour): 3700 RPM, boost +7
Combat power (up to 5 minutes): 3700 RPM, boost +9

Water rated temperature in engine output: 65..125 °C
Water maximum temperature in engine output: 130 °C
Oil rated temperature in engine intake: 60..90 °C
Oil maximum temperature in engine intake: 95 °C

Supercharger gear shift altitude: 9500 feet

Empty weight: 4354 kg
Minimum weight (no ammo, 10% fuel): 4585 kg
Standard weight: 5221 kg
Maximum takeoff weight: 6190 kg
Fuel load: 516 kg / 718 l / 158 gallons
Maximum useful load: 1836 kg

Forward-firing armament:
4 x 20mm gun “Hispano Mk.V”, 150 rounds per gun, 650 rounds per minute, wing-mounted

Bombs:
2 x 500 lb general purpose bomb “500 lb. M.C.”
2 x 1000 lb general purpose bomb “1000 lb. M.C.”

Length: 10.26 m
Wingspan: 12.50 m
Wing surface: 27.81 m²

Combat debut: May 1944

Operation features:

The engine is equipped with the two-stage mechanical supercharger which should be manually switched at 9500ft altitude.
The engine mixture control is automatic when the mixture lever is set to NORMAL (1/2) position. It should be set to START (forward, throttle lever movement will be limited by 1/10) position when starting the engine and to CUT-OUT position (back) to stop it.
The engine has an automatic RPM governor that controls the propeller pitch to maintain the required RPM.
Water and oil temperatures are controlled manually by adjusting the radiator shutters.
The aircraft has pitch and yaw flight-control trimmers.
Landing flaps have hydraulic actuators and can be extended to any angle up to 80°. The speed with the extended flaps is limited to 160 mph.
The airplane tailwheel rotates freely and does not have a lock.
The pneumatic brakes are differential: moving the pedals with brakes pressed results in releasing the brake opposite to the pressed pedal.
The landing gear indicator lamp lights up if the throttle is set to low (less than 1/3) position with the landing gear retracted.
It is impossible to open the canopy at high speeds because of the ram air, but there is an emergency jettison handle for bailing out.
The aircraft is equipped with bottom formation lights.
The range-finding gunsight reticle can be adjusted for a given target base and range.

Basic data and recommended positions of the aircraft controls:

Starting the engine:
- recommended position of the mixture control lever: Start
- recommended position of the radiator control handle: close
- recommended position of the prop pitch control handle: 100%
- recommended position of the throttle lever: 10%
Recommended mixture control lever positions for various flight modes: Normal (auto mixture control)
Recommended positions of the radiator control handle for various flight modes:
- takeoff: open
- climb: open
- cruise flight: close
- combat: open
Approximate fuel consumption at 2000 m altitude:
- Cruise engine mode: 8.9 l/min
- Combat engine mode: 14.2 l/min

Modifications

Sabre IIA engine with +11 lb boost
Sabre IIA engine with +11 lb boost
Estimated speed increase at sea level: 23 km/h

2 x 500 lb M.C. bombs
2 x 500 lb Medium Capacity Bombs
Additional mass: 484 kg
Ammunition mass: 464 kg
Racks mass: 20 kg
Estimated speed loss before drop: 45 km/h
Estimated speed loss after drop: 12 km/h

2 x 1000 lb M.C. bomb
2 x 1000 lb Medium Capacity Bombs
Additional mass: 969 kg
Ammunition mass: 949 kg
Racks mass: 20 kg
Estimated speed loss before drop: 57 km/h
Estimated speed loss after drop: 12 km/h