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- POWER SETTINGS
-
- TORQUE SETTING FOR MTOP- RTOP and MCP (Fleet Mean Engine Performance)
-
- The engine torque settings required for MTOP (= Maximum Take-Off Power),
- RTOP (= Reduced Take-Off Power) and MCP (= Maximum Continuous Power) are
- identified below.
-
-
- ENGINE RATING RESERVE
- POWER SYSTEM
-
- MTOP, up to 70 knots IAS Not Armed
- or Armed
-
- MTOP, at 110 knots IAS Not Armed
- or Armed
-
- RTOP, at 110 knots IAS Operating
-
- MCP up to 15,000 feet
- pressure altitude at
- 110 knots IAS
-
-
-
- Maximum Take-Off Power (MTOP) up to 70 KNOTS IAS (all engines)
-
- For take-off, advance the power lever to achieve at least 90% Ng with 1,675
- PRPM selected before releasing the brakes. Thereafter, set torque required
- for MTOP within 5 seconds of releasing brakes. If applicable, confirm that
- the reserve power system is armed. If the required torque is not achieved at
- 70 knots IAS during the take-off run, the take-off may have to be abandoned
- because in this case the scheduled performance is unlikely to be achieved.
- For a rolling take-off where the power lever is advanced from Flight Idle,
- the required torque should be confirmed within 10 seconds of advancing the
- power levers.
-
-
-
- MTOP AT 110 KNOTS IAS (all engines)
-
- The torque for MTOP at 110 knots, with the reserve power system armed or not
- armed as appropriate, is presented for the purpose of setting power in
- flight during normal operation at speeds in the region of 110 knots IAS.
-
-
-
- Reduced Take-Off Power (RTOP) AT 110 KNOTS IAS
-
- The torque for RTOP (reserve power system operating or set manually) at 110
- knots IAS, is presented for the purpose of confirming power settings at
- speeds in the region of 110 knots IAS
-
-
- MCP UP TO 15,000 FEET AT 110 KNOTS IAS (one engine inoperative)
-
- The torque for MCP at 110 knots IAS is presented for pressure altitude up to
- 15,000 feet.
-
-
-
-
- Maximum Take-Off Power (MTOP) up to 70 knots IAS
-
-
-
- OAT in -40 -30 -20 -10 0 10 20 30
- Celsius
- ------------------------------------------------------------------
- Pressure TORQUE LB/FT
- altitude in
- feet
- ------------------------------------------------------------------
- - 1,000 3,608 3,608 3,608 3,608 3,608 3,608 3,608 3,575
- 0 3,608 3,608 3,608 3,608 3,608 3,608 3,608 3,575
- 1,000 3,608 3,608 3,608 3,608 3,608 3,608 3,608 3,560
- 2,000 3,608 3,608 3,608 3,608 3,608 3,608 3,608 3,435
- 4,000 3,608 3,608 3,608 3,608 3,608 3,608 3,465 3,190
- 6,000 3,608 3,608 3,608 3,608 3,608 3,455 3,210 2,945
- 8,000 3,608 3,608 3,608 3,608 3,430 3,180 2,945 2,700
- 10,000 3,365 3,450 3,410 3,315 2,915 3,150 2,700 2,470
- ------------------------------------------------------------------
-
-
- Maximum Take-Off Power (MTOP) at 110 knots IAS
-
-
- OAT in -40 -30 -20 -10 0 10 20 30
- Celsius
- ------------------------------------------------------------------
- Pressure TORQUE LB/FT
- altitude in
- feet
- ------------------------------------------------------------------
- - 1,000 3,680 3,680 3,680 3,680 3,680 3,680 3,680 3,650
- 0 3,680 3,680 3,680 3,680 3,680 3,680 3,680 3,650
- 1,000 3,680 3,680 3,680 3,680 3,680 3,680 3,680 3,580
- 2,000 3,680 3,680 3,680 3,680 3,680 3,680 3,680 3,550
- 4,000 3,680 3,680 3,680 3,680 3,680 3,680 3,590 3,300
- 6,000 3,680 3,680 3,680 3,680 3,680 3,630 3,325 3,060
- 8,000 3,680 3,680 3,680 3,680 3,530 3,350 3,060 2,810
- 10,000 3,420 3,510 3,465 3,420 3,080 3,250 2,810 2,580
- ------------------------------------------------------------------
-
-
- Reduced Take-Off Power (RTOP) at 110 knots IAS
-
-
- OAT in -40 -30 -20 -10 0 10 20 30
- Celsius
- ------------------------------------------------------------------
- Pressure TORQUE LB/FT
- altitude in
- feet
- ------------------------------------------------------------------
- - 1,000 4,100 4,100 4,100 4,100 4,100 4,100 4,100 4,100
- 0 4,100 4,100 4,100 4,100 4,100 4,100 4,100 4,100
- 1,000 4,100 4,100 4,100 4,100 4,100 4,100 4,100 4,100
- 2,000 4,100 4,100 4,100 4,100 4,100 4,100 4,100 4,045
- 4,000 4,100 4,100 4,100 4,100 4,100 4,100 4,045 3,760
- 6,000 4,100 4,100 4,100 4,100 4,100 4,055 3,750 3,480
- 8,000 4,100 4,100 4,100 4,100 3,925 3,735 3,450 3,200
- 10,000 3,785 3,875 3,830 3,780 3,440 3,615 3,170 2,940
- ------------------------------------------------------------------
-
-
- Maximum Continuous Power (MCP) at 110 knots IAS
-
-
- OAT in -40 -30 -20 -10 0 10 20 30
- Celsius
- ------------------------------------------------------------------
- Pressure TORQUE LB/FT
- altitude in
- feet
- ------------------------------------------------------------------
- - 1,000 3,680 3,680 3,680 3,680 3,680 3,680 3,680 3,680
- 0 3,680 3,680 3,680 3,680 3,680 3,680 3,680 3,680
- 1,000 3,680 3,680 3,680 3,680 3,680 3,680 3,680 3,680
- 2,000 3,680 3,680 3,680 3,680 3,680 3,680 3,680 3,680
- 4,000 3,680 3,680 3,680 3,680 3,680 3,680 3,680 3,550
- 6,000 3,680 3,680 3,680 3,680 3,680 3,680 3,540 3,305
- 8,000 3,680 3,680 3,680 3,680 3,680 3,550 3,260 3,040
- 10,000 3,680 3,680 3,680 3,635 3,455 3,275 3,010 2,805
- 12,000 3,495 3,550 3,570 3,355 3,195 3,035 2,780 --
- 15,000 3,095 3,130 3,170 2,985 2,840 2,695 2,475 --
- ------------------------------------------------------------------
-
-
- This information is based on data received directly from the manufacturer of
- the aircraft, Short Brothers PLC in Belfast, Northern Ireland, UK.
- Mr. COWAN, Headquarters Engineer, has been most helpful in providing the
- necessary data to the author.
-
- Juergen H. Vollmer, Compuserve ID: 100014,330
-
-