Strand 2 Flashcards
What is stability?
Ability of the aircraft to withstand any disturbances
What are the hazardous attitudes?
Resignation
Anti-authority
Impulsivity
Invulnerability
Macho
What is the antidote for RESIGNATION?
I can make a difference
What is the antidote for ANTI-AUTHORITY?
Follow the rules, they are there for a reason.
What is the antidote for IMPULSIVITY?
Not so fast, think first.
What is the antidote for INVULNERABILITY?
It could happen to me.
What is the antidote for MACHO?
Taking chances is foolish.
What is the operational pitfall “Get-there-itis”?
Impairs pilot judgement through a fixation on the original goal or destination, combined with a disregard for any alternative course.
What is the operational pitfall “Duck-under syndrome”?
Pilot may be tempted to make it into a airport by descending below minimums during an approach
What is the operational pitfall “scud-running”?
Pilot tries to maintain visual contact with the terrain at low altitudes.
What is the operational pitfall “neglect of flight planning”?
May rely on memory, or familiar routes instead of established procedures/checklist.
What are the four forces of flight?
Lift
Weight
Thrust
Drag
When are the four forces of flight equal?
During straight level and unaccelerated flight
What is lift?
Component of the total aerodynamic force on an airfoil and acts perpendicular to the relative wind
How is lift produced?
Newtons 3rd law and Bernoullis Principle
How can lift be manipulated?
Changes to the wing area, speed, and air density
What Is the lift equation?
(Lift coefficient x wing area x density altitude x TAS squared) divided by 2
What is Newtons 3rd law?
For every action, there’s an equal and opposite reaction
How does newtons third law relate to lift?
The downward motion behind the wing creates opposite reaction upward
What is Bernoullis principle?
As velocity of the fluid increases, fluid pressure decreases
How does Bernoulli’s principle help produce lift?
Air moves from areas of high pressure to low pressure causing an upward force on the wing
What is drag?
A rearward force caused by a disruption of airflow of airfoils
What are the types of drag?
Parasitic and Induced
What is induced drag?
Drag caused by the same factors that produce lift
What are the types of parasitic drag?
Form
Interference
Skin friction
What is form drag?
Drag comes from aircraft shape and airflow around it
What is interference drag?
Drag coming from intersection of airstreams such as the fuselage
What is skin friction drag?
Aerodynamic resistance due to moving air with the surface of the aircraft.
What is the lowest point of drag?
L/D Max aka Vglide
What are the primary flight controls?
Ailerons, elevator, rudder
What are the secondary flight controls?
Rudder and Trim
What axis does the ailerons control?
Lateral axis
What axis does the elevator control?
Lateral axis
What axis does the rudder control?
Vertical axis
How are the ailerons operated?
Control rods
How is the elevator operated?
Control rods
How is the rudder operated?
Cable
How are the flaps operated?
Electronically operated control rods
How is the trim controlled?
Bowden cable
What is ADM?
A systematic approach to the mental process used by pilots to consistently determine the best course of action in response to a given set of circumstances
What process would you use for ADM?
3 P’s (Perceive, Process, Perform)
How would you perceive the hazard?
PAVE
Pilots
Aircraft
enVironment
External pressure
How would you process/evaluate the hazard?
CARE
Consequences
Alternatives
Reality
External pressures
How would you perform/implement risks?
TEAM
Transfer
Eliminate
Accept
Mitigate
What is maneuverability?
Ability of an aircraft to change directions along a flight path and withstand the stresses imposed upon it
What is controllability?
Measure of the response relative to the pilots flight control inputs
What is adverse yaw?
Condition where the nose tends to yaw toward the outside of the turn. This is cause by the higher induced drag on the outside wing which is also producing more lift.
What tool can help adverse yaw?
Differential ailerons
What is the force “Weight”?
Force exerted by an aircraft from the pull of gravity
What is the force thrust?
Forward aerodynamic force produced by the prep or turbojet engine as it forces air to the rear behind the aircraft
What is a stall?
Rapid decrease in lift caused by the separation of airflow from the wings surface, brought on by exceeding critical angle of attack. Stall can occur at any attitude or pitch
What are some stall indications?
Stall warning horn
Mushy controls
Buffeting
Unarrested Descent
What is static stability?
Initial tendency of the aircraft once disturbed
What is a characteristic of positive static stability?
Eventually settles
What is a characteristic is neutral static stability?
Continues in that direction
What is a characteristic of negative static stability?
Condition worsens
What is dynamic stability?
Tendency of the aircraft over time
Must have positive static stability
What are the left turning tendencies?
P Factor
Gyroscopic Precession
Torque
Slipstream
What is P Factor?
Descending blade has a higher angle of attack therefore increased thrust
What is gyroscopic precession?
Felt 90° of the location, in direction of rotation. More relevant in tailwheel planes. The pull on the right side of the propeller creates yaw to the left
What is Torque?
Generated when the clockwise rotation of the prop gets the plane to want to rotate counter-clockwise. Greatest at high airspeeds with high power settings and high angle of attack
What is slipstream?
Corkscrew wing from the prop strikes the tail on the left side
What is load factor?
Ratio of lift being produced by the wings compared to the aircraft weight expressed in Gs.
What is the load factor of the DA-40?
Va: 3.8 to -1.52
Vne: 3.8 to 0
Flaps T/O: 2.0 to ???
What is the load factor equation?
Load factor = lift/weight
What is a spin?
Aggravated stall, when 1 wing is stalled more than the other
What are the recovery procedures of a stall?
Power: Idle
Rudder: full opposite
Ailerons: Neutral
Elevator: Full forward
Rotation stops…
Rudder: neutral
Elevator: Pull carefully
What are the maneuvering speeds?
Below 2646 lbs = 111 KIAS
Below 2284 lbs = 94 KIAS
What stability controls pitch?
Longitudinal stability
What stability controls roll?
Lateral stability
What stability controls yaw?
Vertical stability
What is CG?
Meeting point of all 3 axis
Tie an airplane to a string and it should be balanced
What is an accident?
Any person suffers death, serious injury, or aircraft is substantially damaged
What is an incident?
Occurrence other than an accident that may affect safety of operations
What is a serious injury?
Requires hospitalization for more than 48 hours within 7 days of the incident
Who would file a report to NTSB?
Operator
How is the elevator controlled?
Steel push rods
What is the elevators build?
GFRP and sandwich construction
What is the rudders build?
GFRP and sandwich construction
What is the airframe made of?
GFRP
What is the construction for the airframe?
Semi-monocoque molded construction
Formers and stringers
What are the wings made of?
GFRP/CFRP
What are inside the wings?
Front and rear spar
What is the construction of the wings?
Sandwich construction
What is the empennage made of?
GFRP
What is the construction of the empennage?
Semi-monocoque construction
What type of tail does the DA-40 have?
T-tail
What construction is the rudder and elevator?
Sandwich construction
How is the Rudder operated?
Steel cables
How does the heater work?
Air inlet to space around the exhaust to the cabin
What is a risk to having the heater on?
Exhaust leaky cause CO2 poisoning
What are some actions that require immediate notification to the NTSB?
Aircraft accident
Flight control system malfunction/failure
Flight crew members unable to perform duties due to injury
In-flight fire
Aircraft collision in flight
Damage to property over $25,000
Runway incursions (Air Carrier)
When does a report need to be turned into NTSB?
10 days of accident, or as requested for incident
What is a bell crack?
Pivot point around a corner
What is the construction of the ailerons?
GFRP/CFRP sandwich
When should you open alternate air?
When intake is blocked, or engine has no air
How is the DA-40 ventilated?
From air inlets on the outside of the plane and controlled by twist knobs to control air flow
What engine do we have?
Lycoming-IO-360-M1A
How many cylinders are there?
4 cylinders
How many spark plugs are there?
8 spark plugs, 4 for each magneto
How is the engine opposed?
Horizontally
How big is the engine?
361 cubic inches
What are the 4 strokes in the engine?
Intake
Compression
Combustion
Exhaust
What is the HP of our engine?
180 HP @ 2700 RPM (sea level + ISA)
160 HP @ 2400 RPM (sea level + ISA)
What is a fuel injected system?
It uses a fuel pump to push fuel through a metering system. Then, the fuel flows through injector lines to each cylinder
What is a downfall of fuel injected system?
Fuel can vaporize on hot days
What is a downfall of a carburetor?
Carburator Icing
What is carburetor icing?
Air expansion and fuel evaporation in the venturi of the carburetor which can happen in high humidity and between 20-70 degrees Fahrenheit
How would you be able to tell if you got carburetor icing?
Fixed pitch: RPM drop
Constant speed: Manifold pressure drop
Do we have a wet sump or dry sump oil system?
Wet sump
What is a wet sump?
Oil pump takes oil from sump to moving parts in the engine
What is a dry sump?
Oil is stores in a separate tank which oil pumps must take to different parts of the engine
What is the point of a fuel tank vent?
Prevents tank from crumbling
What is an oil breather tube?
Prevents oil tank from crumbling
What fuel does the engine take?
100, 100LL, unleaded
What color would show if you mixed fuel?
Clear
What color is 100LL?
Blue
What color is 100?
Green
What is a Volt?
Reading of electrical potential energy
What is an Amp?
Amount of energy being used
What are the 4 systems of the electrical system?
Power generation
Storage
Distribution
Consumers
How many volts can we carry?
28 volts
How many amps can we carry?
24 Amps
How is electrical power distributed?
Busses
What will be powered with the emergency switch on?
Attitude Gyro
Flood lights
1.5 hours
What does the voltmeter display?
Potential for the main bus
What does the ammeter show?
Current with what the alternator is being loaded
When does stall warning horn go off?
5-10 knots before stall speed
How does the landing gear work on the DA-40?
Main landing gear sprung steel struts with a free-catering nose wheel sprung by an elastomer package
How do brakes work on the DA-40?
Hydraulically operated on the main landing gear by toe pedals
How is the canopy secured?
Steel bolts lock into mating holes in polyethylene blocks
What happens to the prop during High RPM?
Fine pitch
What happens to the prop during Low RPM?
Coarse pitch
How many fuel pumps are there?
1 mechanical and 1 electrical
What is the capacity of standard fuel tanks?
40 (20 + 20)
What is the capacity of the long range tanks?
50 (25 + 25)
What is AFCS?
Auto Flight Control System
What can maximize lateral stability?
Dihedral
Keel Effect
Sweptback Wings
What can maximize directional stability?
Tall vertical stab
What can maximize longitudinal stability
Fwd CG
What is the operating range for the oil temp?
149-230 F
What is the operating range for the CHT?
150-475 F
What is the operating range for the Oil pressure?
56-95 PSI
What is the operating range for the fuel pressure?
14-35 PSI
What is the operating range for the fuel flow?
1-20 GPH
What is the operating range for the volts?
25.1 - 30V
What is the operating range for the amps?
2 - 75 Amps
What is indicated altitude?
Altitude read directly from the altimeter with correct altimeter settings
What is Pressure altitude?
Altitude above standard 29.92 plane
What is Density altitude?
Pressure altitude corrected for non standard temperature
What is true altitude?
vertical distance above sea level
What is absolute altitude?
Distance between airplane and ground
What are the required documents?
Pilot certificate
Medical certificate
Government issued ID
What are the aircraft inspections?
Annual
VOR (30 days)
Inspections (phase, whatever)
AD’s
Transponder (24 months)
E.L.T. (12 months)
Static system (24 months)
What is ISA?
15 Celsius
29.92 “HG
1013.25 mb
Sea level
What are the lapse rates?
Std: 2 Celcius/1000 ft.
Wet: 1 Celcius/1000 ft.
Dry: 3 celcius/1000 ft.
What is indicated airspeed?
Airspeed uncorrected for instrument + position errors
What is TAS?
Actual airspeed of plane flying through air
What is ground speed?
Speed over the ground
What is CAS?
IAS corrected for portion and instrument errors
What is EAS?
Over 200 knots and corrected for pressure air in front of pitot tube
What are the aircraft req’d documents?
Airworthiness certificate (no expire)
Registration (3 years)
Radio License (int’l only)
Operators manual
Weight and Balance
ATOMATOFLAMES?
Airspeed indicator
Tachometer
Oil Pressure gauge
Manifold pressure
Altimeter
Temperature gauge
Oil temp gauge
Fuel Gauge
Landing gear position indicator
Anti-collision lights
Magnetic compass
E.L.T
Safety belts
FLAPS?
Fuses
Landing lights
Anti-collision lights
Position lights
Source of energy
GRABCARDD?
Generator
Radio
Altimeter
Ball
Clock
Attitude coordinator
Rate of Turn
Directional Gyro
DME (Above 250)
How does high DA affect power?
Engine takes less air
How does high DA affect thrust?
Prop less efficient
How does high DA affect Lift?
Thin air exerts left lift on airfoils
What factors affects aircraft performance?
Aircraft weight
Atmospheric conditions
Runway environment
What would FWD CG do?
Increase longitudinal stability
Lower cruise speed
High stall speed
What would AFT CG do?
Decrease longitudinal stability
Higher cruise speed
Lower stall speed
Vso?
Stall speed landing configuration
Vs1?
Stall speed specified configuration
Vy?
Best rate of climb
Vx?
Best angle of climb
Vle?
Max speed which landing gear may be extended
Vlo?
Max speed where landing gear can be extended/retracted
Vfe?
Max. flaps extended speed
Va?
Max speed where limit load can be imposed w/o structural damage
Vno?
Max. Structural cruising speed
Vne?
Never exceed speed
What is the process for inop equipment?
Remove from aircraft/deactivate
Placard
Record in maintenance log
Pilot determines is safe to fly
What is a minimum equipment list?
List of items that must be operable to operate.
Approved by FAA
What is a special flight permit?
Allows plane to fly with dysfunctional equipment
Issued by local FSDO
Must be displayed in plane
What does FSDO stand for?
Flight standards District office