General Navigation Problems
Having a few problems with General Navigation
If, on a lamberts chart the scale at the PO is 1:2,000,000. What is the approximate scale at the northern edge of the chart if the SPs are 16° Apart
An aircraft is flying at FL310 with an ISA deviation of –10C and a cruising mach no of 0.83. The distance between A and B is 800nm and ATC required the aircraft to slow down at 360nm from B to achieve a delay in ETA of 3mins. To what Mach number must the aircraft reduce to achieve the delay?
Answer = 0.78M
Find ISA temp 31 x 2 – 15 = -47 +10 = -57C
Find TAS using whiz wheel ISA temp and 0.83M# = 457kts
Therefore new TAS is ???? –then convert M# using whiz wheel
A route over the North Atlantic has three waypoints (WP). WP1 is at 60N 030W, WP2 is at 60N 020W and WP3 is at 60N 010W. Assuming still air conditions the course change at WP2 will be:
8° to the left
Ch Long x sin mean lat = convergence angle
Ch long x sin PO = 10 x sin 60 = 8.6 (not sure which direction to turn)
Thanks all for the help
Jinkster