Transcript Environmental Control System

Differences Training
G3
Nov 2007
Agenda
SR22-G3 Product Briefing
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Overview
Flight & Performance
Structure
Systems
SR22-G3 Product Overview
Design Feature Summary
Lightweight Wing Structure
Increased Height & Presence
Expanded Flight Envelope
Redesigned Fairings
Environmental Control System Improvements
Improved Fuel System with Increased Capacity &
Range
Improved Ice Protection System with Increased
Capacity
Wing Tip Recognition Lights
Single-piece Bolster Trim with Backlit Switch
Panel
Flight and Performance
Flight Envelope
“Upper Left” Corner Expansion:
assists in forward occupant(s)
with full fuel loading condition
V-Speeds:
 Changes due to movement
of the pitot tube and wing
root fairing induced changes
to the aircraft pressure field.
 The calibrated airspeeds are
the same. The indicated
values have changed to
account for the differences.
V-Speed
G2 (KIAS)
G3 (KIAS)
VNE
201
200
VNO
178
177
VO
133
133
VFE-50%
119
119
VFE-100%
104
104
VSO
59
62
VS1
70
73
VREF
77
78
Vy
101
101
Vx
78
79
Flight and Performance
Handling
Ground Handling: is not noticeably different from the G2 other than for
the initial impression that the rudder force is lighter and the fact that
during cross wind takeoffs it is easier to get the aircraft to lift the
downwind wheel off the ground prior to reaching rotation speed, in a G2
this is not normally possible.
Cruise Flight: No significant change in typical characteristics
 Lateral Stability - slightly more positive than the G2 resulting in the
elimination of the requirement for an aileron rudder interconnect system.
Dutch roll remains heavily damped, with less than 2 overshoots following a
perturbation.
 Turning Flight - with the rudder-aileron interconnect removed, turning flight
results in a more natural and balanced feel.
Low-speed: Continues to deliver exceptional low-speed and departure
resistance characteristics.
“The SR22-G3 is a continued refinement of an already nice flying light aircraft. The handling qualities
are a harmonious mixture that results from the desire to have an agile sport aircraft feel while
maintaining suitability for the personal air transport mission ”.
Mike Stevens, Director, Engineering Flight Test
Flight and Performance
Performance
Range and fuel reserve both increased with an eleven gallon
addition to the useable fuel resulting in 30-60 minutes more
endurance for the typical user. 1170 NM range obtainable at
55% power economy cruise.
Take off and landing distance increased slightly (less than
50ft) due to the increased stall speed resulting from the CG
envelope expansion.
Range/Endurance Profiles
G2
G3
SR22 G2
SR22 G3
Range/Endurance Profiles
SR22 G2
SR22 G3
Note
SR22 G2
Note
SR22 G3
Turbo Performance Data
Turbo Performance Data
Turbo Performance Data
Flight and Performance
New Wing Root Fairing
Aerodynamics
Wing Root
Fairing
 Reduces air separation at the trailing
edge of the wing near the
fuselage. Reduction of this separation
gives a small increase in cruise speed
and rate of climb.
Note: Reduces
step area
Fit and Finish
Large Fairing
Access Panel
 A single large access panel replaces
multiple smaller access panels to
provide better access and reduced drag
due to the better fit of the single panel.
Structure
Primary Structure
No Significant Change to Airfoils or Basic Planform
Slight increase to wing dihedral
 1˚ Increase
 Change enhanced lateral stability and allowed for removal of
the rudder-aileron interconnect.
Wing Tip Height Above Ground
 G2: ~46.5”
G3: ~ 51”
Structure
Primary Structure
Carbon spar
 Autoclave Processing
 Spar Weight Reduction
(40 lbs lighter than G2)
Carbon Main Spar
 Increased stiffness (lower deflections at same load
than G2)
Structure
G3 Outboard Rib WS 213
(G2 outboard rib was WS 197.5)
Primary
Structure
Carbon Main Spar
Flap Hinges &
Fairings
Structure
Nose Landing Gear
~1.5” Longer NLG Strut increases propeller
clearance by about 2 inches
More robust weld design
Redesigned fairings for improved
aerodynamics and fit-up
G3 Nose Gear
G2 Nose Gear
Fairing
G3 Nose Gear
Fairing
Structure
Main Landing Gear
Two-piece
Main Fairing
G2 Main Gear
Fairing
G3 Main Gear
Fairing
G2 Main Gear
Fairing
G3 Main Gear
Fairing
Structure
Main Landing Gear
MLG attach moved
inboard
 Wheel track decreases
 G2 10.83’
G3 8.52’
MLG height increased 1.5”
No handling differences
Same MLG strut – at a
steeper angle
G2 Main Gear
10.83’
8.52’
G3 Main Gear
Longer steps for
height increase
Lighter Weight
Gear Attach
Systems
Fuel System
Increased Usable Fuel
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G2: 81 US Gal (3 gal unusable; 47 tabs)
G3: 92 US Gal Usuable (2.5 gal unusable; 94.5 total)
(60 gallons at tabs)
16% range increase
Increased supply line diameter between the main fuel tanks and collector
tanks
New fuel quantity sensing layout eliminating the issue of fuel indicating
artificially low on the tank selected.
Systems
Fuel System
Fuel Supply Lines
 Was ½” diameter, lines now
5/8” diameter lines.
 Allows significantly better
flow from main tank to
collector tank.
 Keeps the collector
tank more full under
high fuel draw
conditions.
G3 Wing
Fuel System
G2 Caps
G3 Caps
Systems
Ice Protection System
Overview
 Tank located in L Wing
 3.5 Gal (was 2.96)
 Normal mode is
80 min (was 60 min)
 Maximum mode is 40 min
(was 30 min)
 Fluid = 32.6 Pounds when
full
Systems
Ice Protection System
TKS Fluid Tank
 “Wet” Wing TKS Tank
 Relocated filler port for horizontal fill
 Cap with unique locking key
 Locking drain on bottom of wing (allows
for more easy draining)
 If the system is allowed to run dry and no
fluid is detected during the preflight
procedure, the system must be purged by
an approved technician in accordance with
the Aircraft Maintenance Manual.
G3 TKS
Tank Cap
Panel Extends to Fuselage
Systems
Ice Protection System
Panels
 Inboard porous stall strip
increasing low speed
robustness
 New purge system used prior
to COA to ensuring effective
wet-out.
G3 Inboard
Stall Strip
 Longer Ice Panels (additional
Panel Extends
45” per wing)
to Tips
 Stall warning port moved
outboard to improve
accessibility
Stall Warning
Hole (Outboard)
Environmental Control System
Fresh air enters upper right hand cowl and is
ducted to a heat exchanger surrounding exhaust
muffler. Heated air is then routed to the mixing
chamber to be mixed with fresh air, received
from the new NACA vent on the lower right hand
cowling, if selected from within the cabin. If
heated air is not desired it is vented overboard
prior to the mixing chamber. The air is then
routed by the blower fan or ram air to the cabin
or sent to the evaporator assembly if AC
equipped.
Systems
RAM AIR
RAM AIR
Air from right cowl
Air
from
NACA
vent
AIRFLOW
S
P
OFF
MIXING
CHAMBER
HEAT
EXCHANGER
Environmental Control
System (ECS)
FRESH AIR
VALVE
COMPRESSOR
TEMPERATURE
Is
HOT AIR VALVE
VENTS
SERVO MOTOR
ECS shutoff valve control changed
from mechanical linkage to
electrical actuator control.
 Smoother operation
 Shuts better
 Rigging greatly simplified
Relocation of the ECS fresh air inlet
from the wing leading edge to the
cowl allows for full-coverage TKS
panels.
New ECS mixing box
New lower profile cabin box for fan
and vent options.
WINDSHIELD
DIFFUSER
FLOOR AIRFLOW
PANEL AIRFLOW
DISTRIBUTION
MANIFOLD
AIR GASPER
S
P
FOOT-WARMER
DIFFUSER
NOTE: Illustration depicts maximum
cabin cooling airflows and
selector settings.
EVAPORATOR
ASSEMBLY
RECIRCULATION
CHECK VALVE
CONDENSER
ASSEMBLY
Serials G3 & subs w/ Air Conditioning.
SR22_MM21_2509
Systems
ECS System
Cowl NACA
Heat Box
Systems
Turbo
New R/H intercooler
 Required for NACA
vent clearance
New Sonic Nozzle
Tube and
connections
 Required for
connection to new
heat box
Electrical Interference Protection
Change
Benefit
Additional mesh coverage
on the wing
-Decrease rework in manufacturing if
mesh is compromised
-Decrease effects of a lightning strike
-Allow use of carbon spar
Lighter weight mesh used
-Decrease weight penalty of additional
mesh coverage
TKS panel electrically
bonded to mesh
-Prevent p-static buildup on panels
Aluminized E-glass used in
wing tip
-Allow recognition light to be used
-Decrease effects of a lightning strike
Carbon spar bonded to
protection scheme
-Allow use of carbon spar
New style fuel float has no
electrical wiring in tank
-Prevent possible ignition sources in the
fuel tank
Systems – Aircraft Data Logger
ADL is a data recording system that verifies the integrity of
certain system components
• ADL is standard equipment on all G3 aircraft
• Data remains the property of Cirrus
• Logs numerous PFD, MFD and DAU parameters
Recoverable Data Module
Tail Installation
Systems
Lighting
Tip Recognition Lights
 Blue 3-LED, Luxeon
 9 watt intensity
 Better visibility on the ground
and in the air
 Supplemental Taxi
Illumination
 Operates with the landing
light
Wing Tip Recognition Lights
Systems
Lighting
Bolster Switch Panel
 Recessed design to
protect switches without
hampering access
 Integral backlighting for
improved night operations
 Dims with switch panel
instrument lights
 Nav Lights must be on for
dimmer switch to control
lighting intensity
Restyled & Backlit Bolster Switch Panel
Interior
Bolster Trim panel
New bolster trim (replaces bezel)
Restyled for improved fit-up and aesthetics
“Soft Touch” paint finish
Interior
Circuit Breaker
Panel
Alternating colors
on overlay
Alternating collars
Alignment of text to
breakers to improve
parallax
G2
Breaker Panel
G3
Breaker Panel
Changes to Emergency Procedures
Emergency Descent
1. Power Lever – Idle
2. Mixture – As Required
3. Airspeed Vne – 200 KIAS (177 in significant turbulence)
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Changes to procedures are in blue.
Underlined items are memory items.
Changes to Emergency Procedures
Smoke and Fume Elimination
1. Air-Conditioner – OFF
2. Temperature Selector – COLD
3. Vent Selector – FEET/PANEL/DEFROST POSITION
4. Airflow Selector – SET FAN SPEED TO 3
If source of smoke and fume is firewall forward:
a. Airflow Selector – OFF
5. Panel Eyeball Outlets – OPEN
6. Prepare to land as soon as possible
If airflow is not sufficient to clear smoke and fumes from cabin
7. Cabin Doors – Partially Open
-Airspeed may need to be reduced to partially open door in flight
 Changes to procedures are in blue.
Changes to Emergency Procedures
Cabin Fire In Flight
– If the airplane is in IMC, turn ALT 1, ALT 2, and BAT 1 OFF.
1. Air Conditioner - OFF
2. Bat-Alt Master Switches – OFF, AS REQ’D
3. Fire Extinguisher – ACTIVATE
Warning: Extinguisher contains Halon gas which is toxic when
released. Cabin ventilation may be necessary.
3. Cabin Doors – PARTIALLY OPEN
Airspeed may need to be reduced to partially open door in flight.
4. Avionics Power Switch – OFF
5. All other switches – OFF
6. Land as soon as possible
• Changes to procedures are in blue.
Changes to Emergency Procedures
Cabin Fire In Flight– Continued
7.Airflow Selector – OFF
8.Bat-Alt Switches – ON
9.Avionics Power Switch – ON
10.Activate required systems one at a time. Pause several
seconds between activating each sytem to isolate
malfunctioning system.
11.Temperature Selector – COLD
12.Vent Selector – FEET/PANEL/DEFROST POSITION
13.Airflow Selector – SET FAN SPEED TO 3
14.Panel Eyeball Outlets – OPEN
• Changes to procedures are in blue.
G3 Quiz
What is the propeller clearance on the G3?
9 inches
What was the increase in dihedral of the wing?
Approximately 1˚ increase
Is there an aileron-rudder interconnect on the
G3?
No
G3 Quiz
What are the new speeds for Vne, Vno, Vs, Vso
and Vx?
Vne – 200, Vno – 177, Vs – 72, Vso – 62,
Vx – 79
Where is the stall warning port located?
Just outboard of the right wing cuff
G3 Quiz
What is the purpose of adding LED Recognition
Lighting on the wingtips?
Improved visibility to see and be seen
Where is the TKS tank now located and how is it
accessed?
Inboard left wing and accessed with its own key.
G3 Quiz
What is the quantity of the TKS tank and
expected duration times for “normal” and “high”
settings?
3.5 gals
Normal – up to 80 mins
High – up to 40 mins.
True of False – G3 is certified for known icing?
False
How much does a full tank of TKS fluid weigh?
32.6 Pounds
G3 Quiz
What is the new Total Fuel and Usable Fuel
capacity on G3?
94.5 gallons Total
92 gallons Usable
How much fuel is available at Tabs?
30 Gallons per tank
What is the maximum fuel imbalance?
10 Gallons
G3 Quiz
Explain how air for the environmental system
enters the cabin.
Fresh air enters the lower right hand NACA vent
and is routed to the air mixing chamber where it
is mixed with heated air that entered the right
cowl air intake and passed over a heater shroud.
The air is mixed and sent to that cabin via the
blower.
Questions?