Performance Flashcards
What is the formula for Rate of Climb?
Gradient x Ground Speed
What is the formula for climb gradient?
Rate of Climb / Ground Speed
What is the formula for pressure height?
Elevation + (1013 - QNH) x30
What is the formula for density height?
Pressure height + (120 x ISA Deviation)
What is the formula for ISA Deviation?
Outside air temp - ISA
What will an increase in tail wind do to Point of no return?
Move it closer to departure airport
What effect will a headwind have on ETP?
Move it further away from departure airport
What effect will a tail wind have on ETP?
Move it closer to departure airport
What effect will head wind have on Point of no return?
Move it closer to departure airport
What is the formula for flight fuel?
(Distance x Fuel Flow) / Ground Speed
What is the formula for flight fuel available with gallons?
(Fuel at take off - 3 - 15) / 1.15
What is the formula for flight fuel available with kg?
(Fuel at take off - 8 - 41) / 1.15
What is the formula for minimum fuel with kg?
(Flight fuel x 1.15) + 41
What is the climb performance weight limit imposed to ensure?
That the aircraft will achieve a 3.2% climb gradient in the landing configuration
What consideration determines whether a aircraft is in the normal, utility or aerobatic category?
Maximum positive and negative load factor
Time to PNR formula?
(Safe endurance x GS home) / 2 x TAS
Safe endurance formula?
(Start fuel + taxi + fixed) / 1.15
will get you in galons or kilos, then need to convert to minutes using fuel flow
What is the formula for distance to ETP?
(Total distance x GS home) / (GS on + GS home)
What is forward limit formula?
(Present weight - 2360) x 0.27 + 2400
What is GNMPG formula?
Ground Speed / Fuel Flow
A centre of gravity range is imposed on an aircraft to ensure that?
The aircraft will be controlable during flight
Where will the centre of gravity move and why if fuel is burnt from aux tanks in Echo aircraft?
Move forward because aux tanks are behind CoG
What is the supplementary take off distance?
Distance from beginning of take off distance available to point on strip where prescribed obstacle free gradient is available
The effect of loading an aeroplane with CoG forward of the forward limit is that?
Elevator effectiveness is reduced
What is the %MAC formula?
(Centre of gravity mm aft of datum - 2190) / 19
What is the formula for time to ETP?
(Distance to ETP x 60) / GS ON
Weight to shift formula when only given index units?
(Index units x 10000) / Change of arm
An Echo is loaded at take off so that the centre of gravity is exactly on the forward limit of the permitting range. If fuel is burnt from the aux tanks, what happens to the centre of gravity?
Moves forward and remains in the envelope
