AlphaSim B-24 Liberator Procedures

Note: Use the Fuel and Payloads feature under the Aircraft Menu to adjust fuel and payload. The 8,000 lb. bomb load is simulated by the central station load of 8,000 pounds.

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REFERENCE SPEEDS (46,500 lbs)

STALL, CLEAN 106 MPH IAS

STALL, FULL FLAPS 79 MPH IAS

FLAPS EXTEND MAX 155 MPH IAS

GEAR EXTEND MAX 150 MPH IAS

VNE (Never Exceed) 280 MPH IAS

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ENGINE START/PRE-TAKEOFF CHECKLIST

1. Brakes SET/CHECK

2. Cowl Flaps FULLY OPEN

3. Elevator Trim SET

4. Mixture RICH

5. Propeller HIGH SPEED

6. Fuel BOTH

7. Throttle IDLE POSITION

8. Engines START IN SEQUENCE

9. Run-up 2000 RPM AND HOLD

10. Hydraulic Press CHECK WARN LIGHT OFF

11. Flaps SET AS DESIRED

12. Throttle IDLE POSITION

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TAKEOFF (MAX WEIGHT OF 60,000 LBS)

1. Cowl Flaps 1/3 OPEN

2. Prop set to 2,700 rpm

3. Flaps 1/2 DOWN (20 DEGREES)

4. Throttle 49 in. Hg.

5. Brakes RELEASE

Rotate at 130 mph IAS.

Retract gear after establishing 135 mph IAS and positive rate of climb.

Retract flaps before reaching 155 mph IAS.

Takeoff Distance: 6,000' to clear 50' obstacle.

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NORMAL CLIMB

Cowl Flaps 1/3 OPEN

Max CHT Temp 260 deg C

Prop set to 2,400 rpm

Throttle 42 in. Hg.

Airspeed 165 mph (IAS)

Fuel to 10,000' MSL 112 Gallons

Distance covered 53 Naut. miles

Time to 10,000' MSL 21 min. 42 sec.

Average fuel burn 300 Gal/hr

Fuel to 25,000' MSL 332 Gallons

Distance covered 192 Naut. miles

Time to 25,000' MSL 65 min. 18 sec.

Average fuel burn 300 Gal/hr

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MAXIMUM PERFORMANCE CLIMB

Cowl Flaps 1/3 OPEN

Max CHT Temp 260 deg C

Prop set to 2,550 rpm

Throttle 45.5 in. Hg.

Airspeed 155 mph (IAS)

Fuel to 10,000' MSL 90 Gallons

Distance covered 35 Naut. miles

Time to 10,000' MSL 15 min.

Average fuel burn 340 Gal/hr

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CRUISE (LOW LEVEL, BEST RANGE)

Altitude 2,000' MSL

Max CHT Temp 232 deg C

Throttle 32 in. Hg.

Prop set to 1800 rpm

Fuel consumption 166 Gal/hr

Airspeed (IAS) 160 mph

Airspeed (True) 163 mph

Economy (this setting) 0.98 miles/gallon

Range (this setting) 2,940 miles

Note: Range assumes a usable fuel load of

3,000 gallons, no reserve.

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CRUISE (MID LEVEL, BEST RANGE)

Altitude 10,000' MSL

Max CHT Temp 232 deg C

Throttle 33 in. Hg.

Prop set to 1900 rpm

Fuel consumption 180 Gal/hr

Airspeed (IAS) 154 mph

Airspeed (True) 178 mph

Economy (this setting) 0.98 miles/gallon

Range (this setting) 2,940 miles

Note: Range assumes a usable fuel load of

3,000 gallons, no reserve.

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CRUISE (HIGH LEVEL, BEST RANGE)

Altitude 25,000' MSL

Max CHT Temp 232 deg C

Throttle 35.5 in. Hg.

Prop set to 2100 rpm

Fuel consumption 210 Gal/hr

Airspeed (IAS) 150 mph

Airspeed (True) 222 mph

Economy (this setting) 1.05 miles/gallon

Range (this setting) 3171 miles

Note: Range assumes a usable fuel load of

3,000 gallons, no reserve.

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CRUISE SETTINGS, HIGH LEVEL BOMB RUN

Altitude 25,000' MSL

Throttle 37.5 in. Hg.

Prop set to 2100 rpm

Airspeed (IAS) 160 mph

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CRUISE SETTINGS, LOW LEVEL BOMB RUN

Altitude 300' AGL

Throttle 45 in. Hg.

Prop set to 2500 rpm

Airspeed (IAS) 225 mph

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OPERATIONAL LIMITATIONS

Takeoff/Emergency power 49 in. Hg.

Rated power (1 hour) 45.5 in. Hg.

Max g 3.0 g

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PRE-LANDING CHECKLIST

1. Cowl Flaps 1/3 OPEN

2. Mixture RICH

3. Propeller HIGH SPEED

4. Fuel BOTH

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LANDING (50% FUEL, NO AMMO)

Prop set to 2,700 rpm

Gear Down below 155 mph (IAS)

Flaps 1/2 down at 155 mph (IAS)

Flaps Fully down at 125 mph (IAS)

Touchdown 95-100 mph IAS