Exam 1 Add Flashcards
Define autorisation
No engine power supplied
Main rotor driving by relative wind only
Prevent RPM rotor speed during auto
Overspeed trip: raise collective
Recovery settling with power
Increase a/s with cyclic
Reduce collective pitch as altitude permits
Simultaneously conditions required for settling with power
Vertical descent 300 FPM
the engine must be using 20-100% power
A/s less than ETL
Define settling with power
A condition of powered flight in which the helicopter settles in its own downwash
Where is lift produced?
Outside the tips
Most general stall in aviation
Is exceeding the critical angle of attack
Contributing factors to both retreating blade stall and excessive coning
High GW
High G maneuvers
Low rotor RPM
Turbulence
Symptoms of retreating blade stall in a single rotor helicopter
Violent pitch up of nose
Rolling to the left
Recovery procedure from retreating blade stall
Reduce collective pitch
Regain control of the a/c
Operating at what speed is most likely to produce retreating blade stall
Excessive airspeed
Which control input is required to recover from dynamic rollover on level ground
Smooth, moderate collective reduction
Dynamic rollover occurs due to combinations of two factors
Human
Physical
Peak wind
Must be blowing more than 25 kts
Right of rmk
Varying
60 degrees or more
Greater than 6 kts
TAF
Meters
9999
7 SM or greater
Prevailing visibility metar
Fractions or whole SM
Stations pressure conversion:
SLP 167
SLP 825
1016,7 mB
982,5 mB
Altimeter setting
Always xx . xx
In Hg
Weather includes
Vertical precipitation
Horizontal obscurations
NSW
Increase density
Lower DA
More lift
Pressure - High
Temp - Low
Humidity - Low
Decrease density
Higher DA
Less lift
Pressure - Low
Temp - High
Humidity - High
What causes blades to loose lift at 3 o’clock
Induced flow increases, AoA decreases
What causes blades to increase lift at 9 o’clock
Induced flow decreases, AoA increases
TAF includes
Lift and Drag
Total force includes
Lift and Thrust
List four methods used to overcome translating tendency in a single rotor helicopter
Rigging of the cyclic
Rigging of the mast
Left cyclic
Automatic flight control/stability argumentation system
5
6
5 - turbulens
6 - icing
