Equations Flashcards
1
Q
Critical Point / Equi time point
Distance FROM aerodrome to CP
A
Total distance ✖️ GS home from CP
➗
GS home from CP ➕ GS ON from CP
2
Q
HATS
A
Heading + ADF Relative Bearing = Track to Station
3
Q
Convergence factor (n)
A
= bearing change ➗ longitude change
4
Q
Change in bearing (true)
B
n / L
A
= degrees of longitude travelled ✖️ convergence factor for the chart (n)
5
Q
Theoretical VHF range in Nm
A
= ✔️1.5 ✖️ receiver altitude in FT
6
Q
1 in 60 rule
A
= Angle off track ✖️ distance travelled
➗
60
7
Q
SOH CAH TOA
A
Sine = Opposite ➗ hypotenuse
Cosine = Adjacent ➗ hypotenuse
Tangent = Opposite ➗ Adjacent
8
Q
Point of no return (PNR)
Time to PNR (mins from departure)
A
Safe endurance ✖️ GS home
➗
GS home ➕ GS out to PNR
