Formulas Flashcards
Gradient Required (Feet/NM)
Altitude to Lose
Distance to Travel
VVI Required
Gradient x NM/Min
Pitch Change
Gradient
100
or 1° Pitch Change = 100 ft/Nm
Turn Radius (TR) 90°
NM/MIN - 2
Lead Point for Radial to Arc
Desired Arc + TR
Distance From Station
TAS x Minutes Flown
Degrees of Bearing Change
VVI for 3° Glideslope
GS x 10
2
Teardrop Entry - Bank Angle Required
TR x 60
Distance Between Radials
45/180 Maneuver
(3 x TR) + 2
80/260 Maneuver
3 x TR
Bank Angle to Maintain Arc
(30/Arc) x TR
Teardrop Distance Outbount
TR x 120
Degrees Between Radials
WX Radar Tops
(Dist x Tilt) x 100
Drift Angle
Crosswind Component
NM/MIN
Arc to Radial Leadpoint
(60 x TR)
Arc or DME
Calculate TAS
( FL / 2 ) + IAS
Time To Station
60 x Time b/t Bearings
Bearing Change
Crosswind Component
Crosswind Angle + 20
Headwind Component
30° = 90%
45° = 70%
60° = 50%
TD
TR x 2
Holding - Outbound Leg Correction
1 Minute Legs = 3600 / Inbound Time
1.5 Minute Legs = 8100/Inbound Time
Hydroplane Speed
9 x Sq.Rt. Tire Pressure
VDP in TIme
Final Approach Time - (HAT / 10)
L/D MAX Formula
4(M + 3) / M
°C to °F
°F = ((°C x 2) -10%) + 32
°F to °C
°C = ((°F -32) + 10%)) / 2
Lift Equation
L = ½pV²ACL
Where:
L = Lift in Pounds
p = air density
V = TAS
A = Wing Surface Area
CL = Coeifficient of Lift at desired AOA
Stall Speed Increases…
In Proportion to the Square Root of Load Factor
Example: 45kt stall 4g.
Vs x Sqr. Rt. G’s
45 x Sq. Rt. 4 = 90 kts
Estimating Cloud Bases °C
Temp - Dew Point
2.5
Bank Angle for Standard Rate Turn
(TAS / 10) x 1.5
Required Pitch with Wind
Each 60 kts of wind will change pitch 1°
Triple Drift
Hold 3x inbound drift on oubound leg
for the same amount of time spent in 180° Turn.
180° Turn = (1% TAS/2)
Result in decimals of a minute.
Specific Range
NM Flown = TAS x 1000
1000 FF in Lbs/Hr
Diversion Altitude
10% of DIstance to Alternate + 5
e.g. 200 nm = 20 + 5 = FL250
Time to Station
60 x Time b/t Bearings
Bearing Change
