************************************
Douglas
DC-7 Pilot's Handling Notes
(data form Wikipedia)
************************************
Lunghezza |
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35,81 m (117 ft 6 in) |
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Altezza |
8,71 m (28 ft 7 in) |
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Peso a vuoto |
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da 51 982 a 55 338 kg (114 600-122 000 lb) |
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Passeggeri |
da 64 a 95 |
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Capacitą
combustibile |
26 785 L[senza fonte] |
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Propulsione |
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4 radiali Wright R-3350-30W |
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Prestazioni |
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Velocitą max |
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156 km/h (97 mph) |
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Velocitą di
crociera |
578 km/h (359 mph) |
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Autonomia |
8 311 km (5 164 mi) max
capacitą di combustibile |
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Quota di
servizio |
8 656 m (28 400 ft) |
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12 000 m[senza fonte] |
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HANDLING THE
ENGINES
The DC-7 has four
2450hp Wright R-3350-DA2 Cyclone TC18 engines which
are fuel injected,
two speed supercharged, and turbo compounded to give
rated power up to
16400 feet. These are the most complicated piston
engines to enter
series production for civilian use and despite
simplification for
use in FS2002 their operation is complex.
Each has 3250hp
available for take off (at sea level) and for five
minutes in case of
emergency. METO power is 2650hp to 6,500 feet,
however prolonged
use in excess of 1910hp is discouraged and should be
reserved for
emergencies.
The constant speed
propellers can be feathered and have reverse pitch.
Automixture control is provided, but may be overidden.
During climb the
primary power reference is MAP, but in the cruise the
primary power
reference is fuel flow.
The power required
to cruise this aircraft economically depends on weight.
Initial cruise may
need to be at 1800hp per engine reducing to 1500hp at
the end of a long
flight. To achieve the most economical cruise condition
as fuel (weight)
reduces set the appropriate RPM and then adjust the
throttles to achieve
the stated PPH (per engine) using the fuel flow
gauge. Intermediate
values may be interpolated. If fuel economy is not
paramount normal
cruise MAP may be regarded as 37 inches at all weights
adjusting only RPM
in accordance with the schedule below.
WARNING - NEVER
EXCEED 43 inches MAP after noise abatement or
41 inches MAP after
climb complete.
Maximum fuel load
is 35,830lbs of high density 145 Octane fuel.
***************************************************************
HANDLING THE
AIRCRAFT
****************************
Take Off:
APPLY BRAKES
MIXTURE - MANUAL
FULL RICH
COWL FLAPS - MID
TRIM 30% full range
NOSE UP
FLAP - STAGE 2
CALL for TOGA
POWER (3250hp)
PROPS FULLY FINE
Slowly apply FULL
THROTTLE
ROTATE at 125
KIAS (122,200lbs)
Establish positive
rate of climb
GEAR UP
ACCELERATE > 140
KIAS @ <= 500 ft/min
CLIMB 300 feet QFE
(agl)
FLAP - STAGE 1
ACCELERATE 150 KIAS
@ <= 500 ft/min
CALL for METO Power
**********************************
METO Power: (Climb
stage 1 = Noise abatement)
COWL FLAPS - MID
48 inches MAP
2600 RPM
150 - 156 KIAS
Climb 2000 feet QFE
(agl)
FLAP - UP
ACCELERATE 175 KIAS
@ 500 VSI
CALL for climb
power
***********************************
Climb Power: (Climb
stage 2)
MIXTURE - AUTO
COWL FLAPS - MID
42 inches MAP
2500 RPM
175 KIAS
IF UNABLE to
maintain 500 VSI @ 175K
LEVEL OFF &
REQUEST STEP CLIMB
WHEN ABLE CLIMB 500
VSI
IN 2000 foot steps
Plan 900 PPH
***********************************
Max Cruise (about
1900hp) :
MAX 41 inches MAP
in cruise
COWL FLAPS - CLOSED
2400 RPM
750 PPH
***********************************
Econ Cruise at max
weight (about 1700hp):
COWL FLAPS - CLOSED
2300 RPM
735 PPH
****************************
Econ Cruise at mid
weight (about 1600hp):
COWL FLAPS - CLOSED
2100 RPM
680 PPH
****************************
Econ Cruise at
light weight (about 1500hp):
COWL FLAPS - CLOSED
2100 RPM
650 PPH
****************************
Descent:
AUTOMIXTURE - ON
COWL FLAPS - CRACKED
2300 RPM
REDUCE MAP in
stages of 3 inches (per minute)
MINIMUM 23 INCHES
MAP
<260 KIAS Speed
Brakes may be deployed
*****************************
Holding:
COWL FLAPS -
CRACKED
2300 RPM
Slowly REDUCE MAP
To obtain 170 KIAS
To improve passenger
comfort
FLAP stage 2 may be
selected
MINIMUM 140 KIAS
with FLAP 2
Plan 450 PPH at low
weight
****************************
Approach and
Landing:
MIXTURE - MANUAL
RICH
COWL FLAPS - MID
2300 RPM
MAP as required
REDUCE < 170
KIAS
FLAP - STAGE 1
REDUCE < 160
KIAS
FLAP - STAGE 2
Nearing Glideslope
REDUCE < 150
KIAS
FLAP - STAGE 3
ON descending
GEAR DOWN
23 to 27 inches MAP
FLAP - STAGE 4
REDUCE <130 KIAS
FLAP - STAGE 5
Cross AIRPORT
BOUNDARY 110 KIAS
FLARE and LAND
COWL FLAPS - FULL
OPEN
AFTER NOSEWHEEL
CONTACT
FLAP - UP
REVERSE PITCH
WHEEL BRAKES as
required
****************************
Baulked Landing:
CALL for EMERGENCY
POWER
PROPS FULL FINE
FULL THROTTLE
COWL FLAPS - CLOSED
ROTATE and CLIMB
125 KIAS
Clear of obstacle
GEAR - UP
ACCELERATE >140
KIAS
COWL FLAPS - MID
FLAPS - UP (by
stages)
ACCELERATE 175 KIAS
****************************
General:
AEROBATICS are
PROHIBITED
NEVER EXCEED FL280
NEVER EXCEED FL250
with passengers
NEVER EXCEED 313 KIAS
ROUGH AIR NEVER
EXCEED 269 KIAS
AP in use NEVER
EXCEED 269 KIAS
NEVER DEPLOY SPEED
BRAKES > 260 KIAS
ABOVE FL150 NEVER
EXCEED 260 KIAS
ABOVE FL200 NEVER
EXCEED 230 KIAS
FLAP 1 never exceed
174 KIAS
NOSE GEAR DOWN
never exceed 174 KIAS
FULL FLAP never
exceed 156 KIAS
CLEAN STALL 112
KIAS
STALL with FULL
FLAP 87 KIAS