A102 Aircraft Systems Flashcards
DA 20 Components
FUSELAGE
WINGS
COCKPIT
EMPENNAGE
FLIGHT CONTROLS
LANDING GEAR
POWERPLANT (Eng + Prop)
Describe Fuselage
The fuselage is the body of the aircraft. The
DA20C-1 has a GFRP-fuselage of semi-monocoque (reinforced shell) construction.
Describe the Wings
Wings are the primary lift generating
component of an aircraft. The GFRP-wings
are of semi-monocoque sandwich construction
and contain a CFRP-spar for strength. The
ailerons and flaps are made from CFRP and
are attached to the wings using stainless steel
and aluminum hinges.
Describe the Cockpit
2xFixed Position Seats
Dual Stick, Single Throttle
Adjustable rudder pedals
(Everything painted red goes forward)
Describe the Empennage
The tail of the fuselage and includes the vertical and horizontal stabilizers
Describe the primary flight controls
Ailerons, Rudder, Elevators
How are the Rudders controlled?
By cable from the pedals themselves to the rudder
Describe the Flaps
Slotted flaps for landing and take-off
Operated by an electric flap actuator
3 position switch: Cruise, T/O, and LDG
Describe Trim
The electrically operated trim system balances the elevator forces for different air speeds.
“Pitch-Power-Trim”
Describe the Landing Gear
Fixed tricycle ldg gear
Aluminum spring main landing gear struts
60° free castering nose wheel mounted to a tubular strut.
The manual brake pedals operate hydraulic disk brakes on the main wheels.
Describe the Powerplant
BOTH Eng and Prop
Continental IO-240-B engine. Fuel injected, 4-cylinder, 4-stroke engine with horizontally opposed, air cooled cylinders and heads, with a displacement of 239.8 cu.in. (3.9 liters).
Propeller drive is direct from the crankshaft.
Describe 4-Cycle Eng Operation
Converting fuel into mechanical energy.
These strokes are called intake, compression, power, and exhaust.
Spark plugs per cylinder
2
Total Number of Spark Plugs
8
Describe Eng Baffles
2 Types: Inlet (upper) and Outlet (lower) Baffles
During cold months, baffles used to allow quicker engine warm up and limit cooling to keep engine temps in optimum range
Describe the Eng Controls
The Mixture, Throttle and Alternate Air Control levers
Mixture Lever
Right lever with red cylindrical handle and integral lock
out lever.
Mixture Lever full forward = Full Rich
Mixture Lever full aft = Idle Cutoff
Describe the Prop
Sensenich W69
Two Blade
Wood Construction
Plastic Laminate
Fixed Pitch
Direct Drive
Diameter: 5 ft 9 in
Describe how a prop works
2 ways:
The propeller has a camber like a wing to produce lift in the forward direction
The propeller is twisted to change the angle of attack from the hub to the tip.
DA20 Flight Instruments
Airspeed Indicator
Attitude Indicator
Altimeter
Turn Coordinator
Heading Indicator
Vertical Speed Indicator
Magnetic Compass
ID the Engine Instruments
Cylinder Head Temp (CHT)
Exhaust Gas Temp (EGT)
Fuel Pressure
Fuel Quantity
Oil Temp
Oil Pressure
Ammeter
Voltmeter
Where is the CHT Measured from?
Left rear cylinder
Where is the EGT Measured from?
Left rear exhaust pipe
Where is the Fuel Pressure measured from?
Fuel distribution manifold
Oil Temp for Full Power Operation?
100 F
What is the Ammeter?
Indicates current flowing b/w the battery and main bus
When the needle is indicating a + , the battery is receiving a charge, a - would be opposite
What is a Voltmeter
Indicates the voltage on the main bus.
Indicates about 14 volts when the generator is on-line.
What is the function of the Oil System?
The engine oil system performs several functions to include:
* Lubrication of the engine’s moving parts.
* Cooling the engine by reducing friction.
* Removing heat from the cylinders.
* Providing a seal between the cylinder walls and pistons.
* Carrying away contaminants which cleans the engine.
When would you add a quart of oil?
When it is measuring less that 4.5 quarts.
What material is the fuel tube?
Brass
How many fuel pumps?
2
How many are electrically driven?
1
What gas do we use?
100LL (blue in color)
- DA20 can run on 100 as well
Where does Cabin Heat come from?
Heated around the exhaust manifold
3 Components of the Pnuematic system?
Engine Induction Air
Alternate Air
Cabin Heat/Defrost Air
How many ignition systems are in the DA20?
2
How many Magnetos are there in the ignition system?
2 (left and right)
Major Components of Electrical System?
Battery/Alternator - Electrical Wiring - Electrical Bus - Circuit Breakers - Electrical Equipment
Alternator Volts/Amps?
14 volts, 40 Amps
Battery Volts/Amps?
12 volts / 20 Amps
Brake System Source?
Hydraulic Reservoirs
One behind each pedal
Holds 0.5 Liters each
Where are the Landing & Taxi Lights located?
Left Wing
Where is the Pitot Static Tube located?
Left Wing on the bottom
What is the Static system connected to?
Airspeed, Altimeter, VSI, Mode C Transponder
Vacuum System is connected to what?
Attitude and Heading Indicator
Warning Indicators?
GEN
CANOPY
START
EPU
What is both the Pitot and Static system connected to?
Airspeed Indicator
When does the stall warning sound?
5 knots before a stall
