Handout DA42 Systems

Transcription

Handout DA42 Systems
Flight Training Division
Handout
DA42 Systems
Diamond DA 42
Twin Star
Dimensions and Exterior
Vers. 11.2
© Peter Schmidleitner
© Peter Schmidleitner
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Dimensions
Dimensions
13,42 m
2,49 m
2,20 m
8,56 m
1,74 m
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Dimensions
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Minimum width for 180° turn
1,87 m
2,95 m
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Minimum width for 180° turn
Minimum width for 180° turn
Full nosewheel deflection,
no brake
Full nosewheel deflection,
max. brake on inner wheel
(wheel blocked)
2,95 m
2,95 m
9,5 m
6,0 m
46 cm safety margin
30cm safety margin
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Attention !
„
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AFM page 1-2
In this program all mass and speed
values will be for aircraft with a
MTOM 1785 kg
For aircraft not yet certified for this
MTOM (MTOM: 1700 kg) refer to
the AFM!
X
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Mass (Weight)
Mass
Empty (typical)
1250 kg
Max TKOF
1785 kg
Max Ramp
© Peter Schmidleitner
+ 8 kg
Max Zero Fuel
1650 kg
Max LDG
1700 kg
Min for flight
1250 kg
!
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Max Landing Mass
„
„
Max baggage loads
Landing with a mass higher than
1700 kg is an „Abnormal Operating
Procedure“
„ However:
„Hard LDG Check“ only required
after a hard LDG, regardless of LDG
mass
Nose compartment
30 kg
Cockpit baggage compartment
45 kg
Baggage extension
18 kg
(behind rear seats)
© Peter Schmidleitner
45 kg
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Mass (Weight)
Attention!
JET fuel and Diesel are heavier than
AVGAS!
Speeds
Typical fuel weight:
JET A1:
0,8 kg/ltr
3,03 kg/USG
Diesel:
0,84 kg/ltr
3,2 kg/USG
© Peter Schmidleitner
© Peter Schmidleitner
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Characteristic speeds
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Characteristic speeds
VNO
155
KIAS
VSO
57
KIAS
VNE
194
KIAS
VS1
64
KIAS
VA
up to 1542 kg
120
KIAS
VMCA
68
KIAS
VA
above 1542 kg
126
KIAS
© Peter Schmidleitner
VMCA ice
72 KIAS
Vops ice
121-160
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Characteristic speeds
Characteristic speeds
VFE (Flaps APP)
137
KIAS
VFE (Flaps LDG)
111
KIAS
VLO E
194
KIAS
VR
72 KIAS
VX
79
KIAS
VY
79
KIAS
VYSE
82
KIAS
VLO R (=~VNO)
156
KIAS
VSSE
82
KIAS
VLE
194
KIAS
(= VNE)
Emergency extension
© Peter Schmidleitner
(= VNE)
156 KIAS
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Diamond DA 42 Twin Star
Characteristic speeds
</= 1700 kg
> 1700 kg
VREF FLAPS UP
85 KIAS
86 KIAS
VREF FLAPS APP
82
KIAS
82
KIAS
VREF FLAPS LDG
76
KIAS
78
KIAS
VGA
82
KIAS
82
KIAS
FLAPS
UP
*) LDG distance:
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Instrument Panel
*)
x 1,4
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Instrument Panel
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Instrument Panel
Airspeed
Garmin 1000
Horizon
Altimeter
Compass
Backup Instruments
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Instrument Panel
Instrument Panel
Flood Lights
Emergency Switch
Emergency Battery
(non rechargeable)
Lights
ELT
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Circuit breakers
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Instrument Panel
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Instrument Panel
Alternators + ECU Control
Pitot heat
Engine master switches,
Engine start
Electric Master,
Avionic Master
© Peter Schmidleitner
Landing gear
Autopilot
Flaps
© Peter Schmidleitner
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Alternate Static Valve
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Alternate Static Valve
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Diamond DA 42 Twin Star
DA 42 Garmin 1000
Garmin 1000
Quick overview
Audio Panel
PFD
MFD
© Peter Schmidleitner
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PFD
Airspeed
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Garmin 1000 MFD
Attitude
Altitude
Skid and Slip
EIS / Engine Indication System
Multi Function Display
Vertical speed
Turn Rate
OAT
DG / HSI
Transponder, Time
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Engine Indication System
Default page
Display when
pushing the
SYSTEM button
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Engine Indication System
Display when
pushing the
FUEL button
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Default
SYSTEM
FUEL
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NAV and COM Tuning
NAV and COM Tuning
NAV
LH
identical
COM
RH
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Garmin 1000
Garmin 1000
Active: inside
Standby: outside
Active: green
Standby cursor: boxed
COM
volume/squelch
COM
Active („green“) is selected
on AUDIO panel
NAV volume
ident filter
Active: inside
Active: green
NAV
COM flip-flop
NAV flip-flop
Cursor toggle
Cursor toggle
MHz tuning
MHz tuning
KHz tuning
KHz tuning
© Peter Schmidleitner
Standby: outside
Standby cursor: boxed
Active („green“) is on HSI,
selected by CDI key
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Audio Panel
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Audio Panel
„MIC“ selector; automatically selects
corresponding Audio to headphone
COM Split Switch
Clearance recorder playback
• Last 2,5 minutes of communication
GMA 1347
• Press MKR/Mute to exit
„MAN Squelch“ key
Intercom Isolation
© Peter Schmidleitner
Intercom volume and
squelch control
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Audio Panel
Audio Panel
Normal Position: Intercom volume control
Manual squelch control
MAN SQ off
(not lit)
MAN SQ on
(lit)
Auto squelch is
active
VOL
Inner knob:
Pilot‘s volume
VOL
Outer knob:
Copilot‘s,
Passengers‘ volume
SQ
Pressing inner knob:
toggles between
„VOL“ and „SQ“
Outer knob:
Copilot‘s,
Passengers‘ squelch
Inner knob:
Pilot‘s squelch
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Diamond DA 42 Twin Star
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Hydraulic Brakes
Hydraulic System
Pilot applies brakes
© Peter Schmidleitner
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Hydraulic Brakes
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Hydraulic Brakes
Parking brake
„Pumping“
Copilot applies brakes
One-way valve is closed
Pressure builds up
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8
Landing Gear
Landing gear
„
„
„
„
„
Hydraulically operated
Electrically powered hydraulic pump
Electrically actuated hydraulic valves
operated by gear selector switch
„Squat switches“ prevent retraction on
ground
Warning horn with „gear up“ and
„1 throttle in low position“ or
„flaps LDG“
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Landing Gear
„
„
„
„
„
„
Landing gear
Gear downlock = spring loaded
Downlock released by hydraulic
pressure for retraction
Green lights = gear down and locked
Red lights = gear neither down nor up
Gear held up hydraulically
Emergency operation = free fall
(by releasing hydraulic pressure)
„
Landing Gear Warning:
„
Gear UP
„
one throttle below ~20%
„
Flaps LDG
„
and
„
or
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Landing Gear
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Landing gear operation
Extension
Emergency Extension
© Peter Schmidleitner
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Landing gear operation
Landing gear operation
Extended
Retraction
© Peter Schmidleitner
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Landing gear operation
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Landing gear operation
Retracted
Emergency Extension
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Diamond DA 42 Twin Star
Nosewheel steering
„
„
Nosewheel steered with rudder
pedals
Steering angle:
„
„
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Flight Controls
30° without use of brakes
52° with one wheel fully braked
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Flight Control Operation
Variable elevator backstop
„
Ailerons, Elevator:
push rods
„
Flaps:
electrically by push rods
„
„
Rudder:
cables
„
Normal elevator „up“ deflection: 15,5°
Limited to „13° up“ when both throttles
above 20% (approach power setting) and
flaps LDG
Reason: With full elevator deflection in case
of stalling the handling qualities and stall
characteristics are degraded
„STICK LIMIT“ caution when variable stop not
in proper position and throttles both low or
both high
Preflight check of this device is mandatory!
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Variable elevator backstop
Flaps
UP
or
APP
Power
levers
Backstop
shall be
Trim Tabs
Caution
light
If Backstop is
Both LOW
unlimiting
Split
Rudder trim:
bowden cable
limiting
Both HIGH
LDG
Elevator trim:
bowden cable
STICK LIMIT
STICK LIMIT
Both LOW
unlimiting
Split
inactive
Both HIGH
limiting
limiting
unlimiting
STICK LIMIT
STICK LIMIT
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Diamond DA 42 Twin Star
Power Plant
Power Plant
„
„
„
„
„
„
„
„
2 Thielert Aircraft Engines TAE125
Four cylinders, liquid-cooled, 1689 ccm
Common-rail direct injection
Reduction gear 1:1,69
Dual digital engine control
Turbocharger
Max. power 99kW (135 HP) at 2300 RPM
Max cont. power 99kW (135 hp) at 2300
RPM
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Power Plant
Propeller
• Power lever selects power (LOAD in %)
• RPM automatically determined by selected power
„
„
„
„
Recommended Cruise
Power Setting: 70%
„
3-blade wooden propeller
Constant speed, feathering
Pitch control integrated into engine
Pitch control by gearbox oil
Governor valve controlled by ECU
„
„
© Peter Schmidleitner
Oil pressure up = pitch down = RPM up
Oil pressure down = pitch up = RPM down
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Feathering System
„
„
„
„
Power plant limitations
No „Auto-feather“
Feathering by „Engine Master OFF“ if
RPM above 1300
If RPM below 1300: prop pitch remains
above high pitch lock
Unfeathering by oil pressure from
accumulator when Engine Master is ON
„
„
„
„
„
„
„
„
© Peter Schmidleitner
Max overspeed: 2500 RPM, max 20 sec.
Oil pressure: 1.0 – 6.5 bar
Oil quantity (per engine): 4.5 – 6.0 liters
Max. oil consumption: 0.1 liters/hr
Oil temperature: -32 °C – 140 °C
Gearbox temperature: max. 120 °C
Coolant temperature: -32 °C – 105 °C
Max. restart altitude: 6000 ft, 80–120 KIAS
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Power plant fluid specifications
AFM page 1-2
„
Fuel:
JET A-1 or JET A (ASTM 1655)
JET No. 3 (GB6537-94)
Diesel (EN 590)
„
Oil:
SHELL Helix Ultra 5W30 synth. API SL/CF
SHELL Helix Ultra 5W40 synth. API SL/CF
AERO SHELL Diesel 10W-40
Gearbox oil:
Coolant:
SHELL EP 75W90 API GL-4
„
„
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!
X
Destilled water + cooler protection 1:1
(BASF Glysantin Alu Protect Plus/G48)
(freezing point –36 °C)
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„Diesel“ limitations
„
„
Diesel or JET/Diesel mixture not
permitted in AUX tanks
Temperature limits
„
„
„
„Diesel“ limitations
Below -5° C
Below +5° C
„
When is no more diesel in the
tanks?
„
no engine start
no take-off
Be sure that no diesel fuel is in the
tanks – otherwise temp limitations
for diesel ops must be observed
each tank to be refilled at least twice
with more than 17,2 USG (65 ltrs) of
Jet fuel
„
„
otherwise
tank must be drained
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„Diesel“ limitations
Fuel temperature
-30
-5
Fire detection system
+5
+70
+75
„
JET A-1
Take-off
Diesel, Diesel/A-1 blend
or unknown
„
Engine start
„
Overheat detector in hot area of
each engine
Warning above 250°C
Test button:
Analogue indication
Default page
FUEL page
© Peter Schmidleitner
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Diamond DA 42 Twin Star
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DA 42 Fuel System
Fuel System
„
„
„
„
„
2 Tanks (left and right), each
with 3 chambers:
2 x 25 USG usable
= 50 USG (189 ltr)
= 152 kg (at 0,80 kg/ltr)
At 70% power: 10,5 USG/hr
Max unbalance: 5 USG
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DA 42 Fuel system
DA 42 Fuel System
Fuel filler
3 chambers
Fuel Valve „ON“
Supply
Temperature sensor
Drain
Return flow
18-21 USG/hr
Fuel level sensor
2 vents
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DA 42 Fuel System
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Fuel Valves Schematic
Supply
X-feed operation
Return flow
ON
X-F
ON
OFF
ON
ON
X-FEED
OFF
OFF
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Both valves closed
X-F
ON
OFF
X-F
ON
OFF
OFF
OFF
© Peter Schmidleitner
ON
X-F
ON
X-FEED
Supply
Return flow
X-F
X-F
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Both engines running
Supply
Supply
Return flow
Return flow
X-F
ON
X-F
OFF
OFF
OFF
ON
ON
X-F
ON
OFF
X-F
X-F
ON
X-F
OFF
OFF
OFF
ON
ON
ON
ON
ON
X-FEED
X-FEED
X-FEED
X-FEED
OFF
OFF
OFF
OFF
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LH Eng. u/s, RH Eng. X-feed
ON
X-F
ON
OFF
X-F
Both engines from LH Tank
Supply
Supply
Return flow
Return flow
X-F
ON
X-F
OFF
OFF
OFF
ON
ON
X-F
ON
OFF
X-F
X-F
X-F
ON
OFF
OFF
OFF
ON
ON
ON
ON
X-FEED
X-FEED
X-FEED
X-FEED
OFF
OFF
OFF
OFF
© Peter Schmidleitner
ON
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Diamond DA 42 Twin Star
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Optional Auxiliary Fuel Tanks
Optional Auxiliary Fuel Tanks
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Optional Auxiliary Fuel Tanks
„
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Optional Auxiliary Fuel Tanks
One tank in each nacelle
Capacity: 13,7 USG per side
Useable:
13,2 USG per side
For practical purposes (placarded):
13,0 USG per side
© Peter Schmidleitner
Main tanks
AUX tanks
Total
2 x 25 USG
2 x 13 USG
2 x 38 USG
50 USG
26 USG
76 USG
5 USG
Max unbalance
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15
Optional Auxiliary Fuel Tanks
Optional Auxiliary Fuel Tanks
„
„
„
Electrical transfer pump feeds fuel
from the AUX tank to the main tank
Transfer must be initiated manually
Transfer in 2 steps:
„
„
First half when main tank 17 USG or
less (up to full main tank)
Second half when main tank again 17
USG or less
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Optional Auxiliary Fuel Tanks
Optional Auxiliary Fuel Tanks
„
Compiled
Peter
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CAUTION light
Transfer pump switched OFF
automatically when:
„
„
„
Main tank is full
AUX tank is empty
L/R AUX FUEL E
„
L/R AUX tank empty and fuel transfer
pump ON
© Peter Schmidleitner
© Peter Schmidleitner
Compiled
Peter
Schmidleitner
Compiled
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Peter
Schmidleitner
Compiled
Peter
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Compiled
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Optional Auxiliary Fuel Tanks
Optional Auxiliary Fuel Tanks
In case of a L or R XFER pump failure:
(AUX pump does not operate)
„ Use x-feed function to keep fuel balance
„ Amend flight plan for reduced amount
of available fuel
© Peter Schmidleitner
Mass and Balance
Item
Lever Arm (m)
Wing tanks
2.63
AUX tanks
3.20
© Peter Schmidleitner
Compiled
Peter
Schmidleitner
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16
Optional Auxiliary Fuel Tanks
Optional Auxiliary Fuel Tanks
„
Fuel quantity check
Verify AUX empty
„
„
„
„
Electrical Master
Fuel transfer
L/R AUX FUEL E
ON
ON
CHECKED
„
Fuel quantity between „FULL“ and
„EMPTY“ cannot be determined
Verify AUX full
„
Visual check
© Peter Schmidleitner
© Peter Schmidleitner
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Remember !
Optional Auxiliary Fuel Tanks
„
Preflight fuel management
If possible transfer all AUX fuel to
main tanks
„
„
„
Use external power or one engine running
Electrical Master
Fuel transfer
„
Diesel or A1/Diesel mixture not
permitted in AUX tanks !
ON
ON
until
„
L/R AUX FUEL E
(will take max. 10 minutes)
ON
© Peter Schmidleitner
© Peter Schmidleitner
Compiled
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Diamond DA 42 Twin Star
Compiled
Peter
Schmidleitner
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Schmidleitner
Cooling System
Cooling System
Coolant Temp.
< 80°
© Peter Schmidleitner
Compiled
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Peter
Schmidleitner
Schmidleitner
Compiled
Peter
Schmidleitner
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Schmidleitner
17
Cooling System
Cooling System
Coolant Temp.
Cabin Heat
> 80°
© Peter Schmidleitner
© Peter Schmidleitner
Compiled
Peter
Schmidleitner
Compiled
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Schmidleitner
Diamond DA 42 Twin Star
Cabin Heating and Defrosting System
Defrost from LH Engine
Compiled
Peter
Schmidleitner
Compiled
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Peter
Schmidleitner
Cabin Heat from RH Engine
Turbocharger
System
© Peter Schmidleitner
Compiled
Peter
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Schmidleitner
Turbo Charger
Compiled
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Peter
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Schmidleitner
Turbo Charger
Compressor compresses intake air
Bypass for excess exhaust gas
Exhaust gas drives turbine
Exhaust gas drives turbine
© Peter Schmidleitner
© Peter Schmidleitner
Compiled
Peter
Schmidleitner
Compiled
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18
Diamond DA 42 Twin Star
DA 42 Electrical System
Electrical System
© Peter Schmidleitner
Compiled
Compiled
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Peter
Peter
Schmidleitner
Schmidleitner
DA 42 Electrical System
Compiled
Peter
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Compiled
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Schmidleitner
DA 42 Electrical System
Power sources
Power distribution
Main Battery
24V 10Ah
LH
Generator
28V 60A
Hot Battery Bus
Battery Bus
RH Main Bus
LH Main Bus
Load balancing
RH
Generator
28V 60A
RH ECU Bus
LH ECU Bus
Excitation Battery
24V 1,3 Ah
Emergency Battery
Avionic Bus
© Peter Schmidleitner
© Peter Schmidleitner
Compiled
Peter
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Compiled
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Schmidleitner
DA 42 Electrical System
Compiled
Peter
Schmidleitner
Compiled
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Peter
Schmidleitner
Hot Battery Bus
Battery Bus
Starter
Starter
„
LH
Generator
EPU
Pilot map / reading light
RH
Generator
Main Battery
24V 10Ah
Avionic Bus
Hot Battery Bus
RH ECU Bus
LH ECU Bus
LH Main Bus
RH Main Bus
© Peter Schmidleitner
© Peter Schmidleitner
Compiled
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19
Battery Bus
LH Main Bus
„
„
„
„
LH / RH Main Bus
LH / RH starter heavy duty
power
LH / RH ECU BUS (via diode)
„
„
„
„
„
„
„
„
PFD
Air Data Computer
AHRS
COM 1
GPS/NAV 1
Transponder
Engine
Instruments
Fuel transfer
De-icing system
„
„
„
„
„
„
„
„
„
© Peter Schmidleitner
Pitot heating
Oxygen system
Gear control
Gear warning
Map light
Flood light
Taxi light
Anticollision
lights
Variable elevator
backstop
© Peter Schmidleitner
Compiled
Peter
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RH Main Bus
„
„
„
„
„
„
Avionic Bus
MFD
Horizon
Starter control
Flap system
Avionic/
CDU cooling fan
Avionic Bus
„
„
„
„
„
Stall warning
Autopilot
warning
Landing light
Navigation lights
Instrument
lights
„
„
„
„
„
„
„
„
„
© Peter Schmidleitner
COM 2
GPS/NAV 2
Audio panel
Autopilot
(Data Link)
(WX 500)
(ADF)
DME
(Weather Radar)
© Peter Schmidleitner
Compiled
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Compiled
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DA 42 Electrical System
DA 42 Electrical System
Electric Master
„
„
Compiled
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L/R Alternator switch
Connects Battery Bus to Battery
(Battery Bus powers L/R Main Bus)
Enables Alternator Switches
„
„
© Peter Schmidleitner
Connects L/R Generator to L/R Main
Bus
(In normal operation Alternator switches are
always ON)
© Peter Schmidleitner
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20
DA 42 Electrical System
DA 42 Electrical System
L/R Engine Master
„
„
„
„
Avionic Master Switch
Enables starter activation
Connects L/R ECU (A+B) to L/R ECU Bus
Provides power for „GLOW“ and unfeathering
accumulator
Connects L/R generator field to Excitation
Battery
„
Connects Avionic Bus to RH Main Bus
© Peter Schmidleitner
© Peter Schmidleitner
Compiled
Peter
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DA 42 Electrical System
Excitation Battery
Compiled
Peter
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Schmidleitner
Electric Master OFF
Main Battery
24V 10Ah
OFF
OFF
ON
OFF
ON
Excitation Battery
24V 1,3 Ah
© Peter Schmidleitner
© Peter Schmidleitner
Compiled
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Electric Master ON
Compiled
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LH Engine Master ON
Preparing Engine Start
Engine Masters still OFF
ON
OFF
ON
ON
OFF
ON
OFF
ON
ON
ON
© Peter Schmidleitner
© Peter Schmidleitner
Compiled
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21
LH Engine Start
ON
After LH Engine Start
OFF
ON
ON
OFF
ON
ON
ON
ON
ON
© Peter Schmidleitner
© Peter Schmidleitner
Compiled
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Peter
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Diamond DA 42 Twin Star
External power connection
Oxygen System
© Peter Schmidleitner
Compiled
Peter
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Oxygen system
„
„
„
„
„
Compiled
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Peter
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Schmidleitner
Oxygen system
Continous Flow System
Operation up to 18.000 ft
Oxygen cylinder pressure MAX 1850 psi
4 cannulas plus 1 mask
Acc. AFM to be used above 12.500 ft
© Peter Schmidleitner
© Peter Schmidleitner
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22
Oxygen system
Oxygen system
Oxygen cylinder
Oxygen outlets
© Peter Schmidleitner
© Peter Schmidleitner
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Peter
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Oxygen system
Compiled
Peter
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Compiled
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Schmidleitner
Oxygen system
© Peter Schmidleitner
© Peter Schmidleitner
Compiled
Peter
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Oxygen system
Compiled
Peter
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Oxygen system
Flowmeter
Quick connect
Adjustable flow valve
Scale for cannula
© Peter Schmidleitner
Scale for mask
© Peter Schmidleitner
Compiled
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23
Diamond DA 42 Twin Star
Ice protection system
Ice Protection System
Fluid ice protection system
Product of
CAV Aerospace Ltd
(Celtic Aerospace Ventures Ltd)
commonly knows as
„TKS“
© Peter Schmidleitner
Compiled
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Peter
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Schmidleitner
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Ice protection system
T
„K
„S
„
„
„
„
Tecalemit Ltd.
(metering pumps)
„TKS“ Ice Protection
General
Kilfrost Ltd.
(deicing chemicals)
Sheepbridge Stokes
(porous metals)
© Peter Schmidleitner
© Peter Schmidleitner
Compiled
Peter
Schmidleitner
Compiled
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Peter
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Compiled
Peter
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Peter
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Ice protection system
„
Ice protection system
How does it work?
„
„
Protection fluid acts a „freezing point
depressant“ (FPD)
Water droplets in the air combine with
FPD fluid to form a mixture with a
freezing temperature below the
temperature of the ambient air
© Peter Schmidleitner
„
Two means of FPD fluid application:
„
„
„
Spray nozzles (windshield, propeller)
Porous skin panels
Propeller:
„
„
Feeding into a „slinger ring“
Feeder tube to (rubber) leading edge
© Peter Schmidleitner
Compiled
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24
Ice protection system
„
Freezing point of glycol:
„
„
-12° C
Freezing point of glycol/water
mixture:
„
-22° C
to
„TKS“ Ice Protection
DA 42
-40°C
© Peter Schmidleitner
© Peter Schmidleitner
Compiled
Peter
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Compiled
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Ice protection system
Compiled
Peter
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Compiled
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Ice protection system
© Peter Schmidleitner
© Peter Schmidleitner
Compiled
Peter
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Compiled
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Ice protection system
Compiled
Peter
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Compiled
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Ice protection system
Operational modes
2 „independent“ systems
Airframe and
Prop
Windshield
„
MAX
HIGH
NORM mode
„
NORM
PUMP 1
PUMP 2
2 x 2 pumps
„
HIGH mode
ALTERNATE
„
LH Main BUS
RH Main BUS
Normally powered from the LH Main Bus
Fluid tank
© Peter Schmidleitner
„
2 pumps simultaneously, but cycled
30 secs ON and 90 secs OFF
1 pump continuously
MAX mode
„
2 pumps simultaneously ON for 2
minutes
© Peter Schmidleitner
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25
Ice protection system
Ice protection system
Operational modes
„
NORM mode
„
„
„
~ 2,5 hrs
„
HIGH mode
„
„
Windshield ice protection
„
~ 1,0 hr
MAX mode
„
2 pumps for redundancy
Only one pump operative at a time
Operated for 5 seconds by a push
button
~ 0,5 hrs
© Peter Schmidleitner
© Peter Schmidleitner
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Ice protection system
Compiled
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Ice protection system
Airframe and
Prop
Windshield
MAX
cycling
HIGH
NORM
NORM
PUMP 1
PUMP 2
ALTERNATE
30s ON, 90s OFF
LH Main BUS
RH Main BUS
© Peter Schmidleitner
Fluid tank
© Peter Schmidleitner
Compiled
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Ice protection system
Compiled
Peter
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Compiled
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Ice protection system
Airframe and
Prop
Continuously ON
Windshield
MAX
HIGH
HIGH
NORM
PUMP 1
PUMP 2
ALTERNATE
LH Main BUS
RH Main BUS
© Peter Schmidleitner
Fluid tank
© Peter Schmidleitner
Compiled
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26
Ice protection system
Ice protection system
2 minutes ON
Airframe and
Prop
MAX
Windshield
MAX
+
HIGH
HIGH
NORM
PUMP 1
PUMP 2
ALTERNATE
LH Main BUS
RH Main BUS
© Peter Schmidleitner
Fluid tank
© Peter Schmidleitner
Compiled
Peter
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Compiled
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Ice protection system
Compiled
Peter
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Compiled
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Peter
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Ice protection system
Airframe and
Prop
Windshield
MAX
HIGH
NORM
PUMP 1
PUMP 2
ALTERNATE
5 seconds
LH Main BUS
Windshield deice
RH Main BUS
© Peter Schmidleitner
Fluid tank
© Peter Schmidleitner
Compiled
Peter
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Ice protection system
Compiled
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Ice protection system
Airframe and
Prop
Windshield
MAX
HIGH
NORM
PUMP 1
PUMP 2
ALTERNATE
Main and Windshield
pump selector
LH Main BUS
RH Main BUS
© Peter Schmidleitner
Fluid tank
© Peter Schmidleitner
Compiled
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27
Ice protection system
Ice protection system
Airframe and
Prop
Windshield
MAX
ALTERNATE switch
connects pump #2
directly to
RH main bus
HIGH
NORM
PUMP 1
PUMP 2
ALTERNATE
LH Main BUS
RH Main BUS
System operates in
HIGH mode
Fluid tank
© Peter Schmidleitner
© Peter Schmidleitner
Compiled
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Ice protection system
Ice protection system
Airframe and
Prop
Windshield
MAX
HIGH
NORM
PUMP 1
DEICE LVL LO light ON
PUMP 2
DEIC PRES LO light ON
after 120 seconds
ALTERNATE
LH Main BUS
RH Main BUS
Annunciator test
Fluid tank
© Peter Schmidleitner
© Peter Schmidleitner
Compiled
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Ice protection system
Ice protection system
CAUTION lights
„
DEIC PRES LO
„
„
DEIC PRES HI
„
„
Ice lights
De-icing pressure is low
De-icing pressure is high
DEICE LVL LO
„
De-icing fluid level is low (below 10 ltrs)
„
© Peter Schmidleitner
(max 45 mins in NORM mode)
© Peter Schmidleitner
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28
Ice protection system
„
Approved fluids
For use in the system:
„
„
„
Ice protection system
Mass and Balance
AL-5 (DTD 406B)
Aeroshell Compound 07
For de-icing on ground:
„
„
„
Lever Arm
(m)
1.00
Item
De-icing fluid tank
AL-5 (DTD 406B)
Aeroshell Compound 07
TKS 80
1 ltr: 1,1 kg
30 ltr: 33,0 kg
© Peter Schmidleitner
© Peter Schmidleitner
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Ice protection system
„
Ice protection system
Preflight Check:
„
„
„
„
„
„
„
„
„
Electric Master
De-ice fluid quantity
Windshield de-icing
DE ICE
Ice lights
Porous panels, props
Ice lights
DE ICE, Ice lights
Annunciator test
„
ON
CHECK
CHECK
HIGH
ON
CHECK
CHECK
OFF
PERFORM
YES on panels
„
„
„
„
„
„
„
© Peter Schmidleitner
Water, soap
Isopropyl alcohol
Ethyl alcohol
Methylated spirit
De-icing fluids
AVGAS
Jet fuel
„
NO on panels
„
„
„
„
© Peter Schmidleitner
Compiled
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Ice protection system
„
„
„
Operational considerations
approved for flight into known icing conditions
(„fiki“)
DA42 Ice protection system is
„
Compiled
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Ice protection system
Operational considerations
„
Wax
Methyl ethyl
ketone (MEK)
Lacquer thinner
Other thinners and
solvents
NOT a „de-icing“ system
but an „anti-ice“ system,
preventing accretion of ice
„
what defines „icing conditions“?
„
„
visually detected ice
visible moisture and OAT +3°C or
below
minimum operating temperature for the ice
protection system: -30°C
© Peter Schmidleitner
© Peter Schmidleitner
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29
Ice protection system
Ice protection system
Operational considerations
„
what indicates conditions the
system my be unable to cope with?
„
„
„
„
Operational considerations
heavy ice accumulation on windshield
ice on side areas of canopy
rapid formation and shedding of bars
thicker than 6mm from porous panels
„
„
„
„
„
select HIGH/MAX
leave icing conditions
Exit icing conditions immediately
how to detect freezing rain or freezing
drizzle ?
„
what to do?
„
flight in „freezing rain“ or „freezing
drizzle“ is prohibited !
„
unusually extensive ice where normally not
observed
ice on upper surface of wing aft of protected
area
ice on spinner further back than normally
observed
© Peter Schmidleitner
© Peter Schmidleitner
Compiled
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Ice protection system
Compiled
Peter
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Ice protection system
Operational considerations
Operational considerations
„
„
how to detect possible freezing rain or
freezing drizzle conditions?
„
„
„
visible rain in OAT below +5°C
droplets that splash on impact in OAT below
+5°C
performance loss larger than normally
experienced in icing conditions
Autopilot
„
may be used in icing conditions, but:
„
„
disconnect every 10 – 15 minutes to
detect out of trim conditions
PROHIBITED with
„
„
„
ice aft of protected area
unusual lateral trim
autopilot trim warning
© Peter Schmidleitner
© Peter Schmidleitner
Compiled
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Ice protection system
Ice protection system
Operational considerations
Operational considerations
Airspeeds with ice on unprotected areas
VMCA
72 KIAS
Continuous operation in icing
conditions (except TKOF, LDG and
maneuvers)
Stalling speeds
Compiled
Peter
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121 – 160 KIAS
+ 4 KIAS
© Peter Schmidleitner
Performance with ice on unprotected areas
reduced by
Rate of climb
up to 150 fpm
1-engine ROC
up to 150 fpm
above 2000ft PA positive ROC may not be achieved
Cruise performance
15%
© Peter Schmidleitner
Compiled
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30
Ice protection system
Ice protection system
Operational considerations
Technical considerations
„
„
„
Approach, landing in icing conditions:
„ Gear down, flaps APP
„ Va min 82 KIAS
„ LDG distance: x 1,4 !
Go around
„ with Flaps APP, gear down, 82 KIAS:
„
5,83%, 529 fpm climb
Priming of the system:
„
main pumps:
„
porous panels:
„
„
„
„
„
primed by windshield pumps
not to be primed in icing conditions !!
shall be primed in climb or descent
up to 4°C
MAX mode in intervals of 5 minutes until
fluid dissipates from all panels
above 4°C priming by special maintenance
only
© Peter Schmidleitner
© Peter Schmidleitner
Compiled
Peter
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Diamond DA 42 Twin Star
Compiled
Peter
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Autopilot Limitations
Autopilot
© Peter Schmidleitner
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Autopilot
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Autopilot
AP engaged
annunciator
Pitch trim
annunciator
ALT Alert
ALT ARM
Baro
display/
setting
Pitch Wrng
AP ON/OFF
Roll Wrng
ALT
V/S
BARO
Set
Altitude
or
Baro
HDG select
APR mode
NAV mode
ALT Hold
Backbeam
display
+/- V/S
or
+/- Alt
© Peter Schmidleitner
© Peter Schmidleitner
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Autopilot
Autopilot
Roll Mode:
ROL
HDG
NAV ARM
NAV
APR ARM
APR
REV ARM
REV
GS ARM
Vertical Speed Mode
Pitch
Mode:
VS
ALT ARM
ALT
GS
© Peter Schmidleitner
Toggles between ALT HLD and V/S
© Peter Schmidleitner
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Autopilot
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Autopilot
Altitude Preselect
Altitude Hold Mode
Select Altitude
ALT ARM
Select V/S
Change to
V/S
Toggles between ALT HLD and V/S
© Peter Schmidleitner
ALT Hold and
ALERT
© Peter Schmidleitner
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Diamond DA 42 Twin Star
Autopilot
CWS
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AP disconnect
Performance
Manual Electric Trim
© Peter Schmidleitner
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Performance
„
DA 42 Twin Star according CS 23:
„
No Density Altitude
graph in the DA42 AFM
Normal, Utility & Aerobatic category
„
Reciprocating engine
„
„
Density altitude
Weight < 2722 kg
„ VSO < 61 kt
„Light Twin“
© Peter Schmidleitner
© Peter Schmidleitner
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TOD, TOR tabular format
The „DA 42“ and „Density altitude“
„
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Attention!
„
„
„
Performance data which are enginepower dependant cannot be
determined by just using „Density
Altitude“!
Reason: the engine power output does
not correspond to density altitude but
pressure and temperature have their
own, independent influence
This is a feature of the ECU controlled,
turbocharged Diesel-engine
© Peter Schmidleitner
© Peter Schmidleitner
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Performance diagrams
TKOF distance
„
All diagrams are in duplicate:
„
„
© Peter Schmidleitner
1st for mass up to 1700 kg
2nd for mass above 1700 kg
© Peter Schmidleitner
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TKOF distance
Grass Runway
(TOM > 1700kg)
Length of
grass
- 5 cm
+ 10%
5 - 10 cm
+ 15%
>10 cm
+ 25%
> 25 cm
© Peter Schmidleitner
TKOF roll
Wet grass
additional
+ 10%
TKOF should not be attempted
© Peter Schmidleitner
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LD, LR tabular format
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LD, LR tabular format
Remember: landing mass > 1700kg =
„Abnormal Operating Procedure“ !
1700 kg
1785 kg
572 m
710 m
+ 138 m
© Peter Schmidleitner
© Peter Schmidleitner
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Grass Runway
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Go around
76 KIAS
Length of
grass
- 5 cm
5 - 10 cm
>10 cm
LDG run
Wet grass
78 KIAS
+ 5%
+ 15%
additional
+ 10%
min + 25%
Required gradient acc. CS 23.77 (a): 3,3% at Sea Level
© Peter Schmidleitner
© Peter Schmidleitner
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34
Accelerate stop distance
Obstacles ?
„d“= (RWL + Obst.Dist.) - TOD
Gradient = („h“ / „d“) * 100
ROC =
Gradient x TAS
0.95
824 m
„h“
1401 m
+ increment for 0° flaps ?
© Peter Schmidleitner
„d“
Obst. Dist.
TOD
RWL
© Peter Schmidleitner
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Diamond DA 42 Twin Star
Vöslau RWY 31
Mass and Balance
„d“= (950 + 830) – 530 = 1250
Gradient = (30 / 1250) * 100 = 2,4%
ROC =
2,4 x 85
0.95
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= 215 fpm
Acc. Performance Graph:
@ 1700 kg ~ 220 fpm
98 ft
1250
830 m
530
950
© Peter Schmidleitner
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Empty mass
„
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Center of gravity envelope
Empty Mass includes:
„
„
„
„
„
„
„
„
Equipment as per Equipment Inventory
Brake fluid
Hydraulic fluid
Engine oil (2 x 6.0 liters)
Coolant (2 x 6.0 liters)
Gearbox oil (2 x 0.9 liters)
Unusable fuel in main tanks (2 USG)
Unusable fuel in AUX tanks (1 USG)
© Peter Schmidleitner
© Peter Schmidleitner
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Moment envelope
Moment arms
Item
© Peter Schmidleitner
Lever Arm (m)
Front seats
2.30
Rear seats
3.25
Wing tanks
2.63
AUX tanks
3.20
De-icing fluid
1.00
Nose baggage
0.60
Cockpit baggage
3.89
Baggage Extension
4.54
© Peter Schmidleitner
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Diamond DA 42 Twin Star
Typical M+B data
Empty mass
Moment
CG arm
ACFT with ice-protection
and AUX tanks
1296,6
3162,5
2,439
ACFT with AUX tanks
1275,5
3103,8
2,433
Emergency
Equipment
© Peter Schmidleitner
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Diamond DA 42 Twin Star
Emergency Equipment
Kinds of Operation
Equipment List
(KOEL)
© Peter Schmidleitner
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Kinds of Operation Equipment List
KOEL
Kinds of Operation Equipment List
© Peter Schmidleitner
KOEL
© Peter Schmidleitner
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Kinds of Operation Equipment List
KOEL
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Kinds of Operation Equipment List
© Peter Schmidleitner
KOEL
© Peter Schmidleitner
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Kinds of Operation Equipment List
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Diamond DA 42 Twin Star
KOEL
Additional minimum equipment for the
intended operation
may be required by
national operating rules
and also depends on the
route to be flown.
Servicing
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Unscheduled Maintenance
„
Scheduled maintenance
„
Required after
„
„
„
„
„
Hard landings
Propeller strike
Engine fire
Lightning strike
Other malfunctions and damage
Every
100 hours
200 hours
„ 1000 hours
„ 2000 hours
„
„
„
Annually
New engine: inspection after 3 – 6 hours
© Peter Schmidleitner
© Peter Schmidleitner
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De-icing
„
Mooring
Aproved de-icing fluids:
„
„
„
„
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Kilfrost TKS 80
Aeroshell Compound 07
AL-5 (DTD 406B)
Procedure:
„
„
„
Remove snow with brush
Spray de-icing fluid
Wipe dry
© Peter Schmidleitner
© Peter Schmidleitner
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Happy landings !
Mooring
© Peter Schmidleitner
© Peter Schmidleitner
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38