CALCULATION LIMITS

TAS: 0 to 2 500 Knots; (minimum limit 1 knot on the Wind tab).

CAS: 0 to 2 450 Knots;

EAS: 0 to 2 500 Knots;

Mach number: 0.000 to 3.400;

Temperatures: -100 to 100 degrees Celsius;

ISA deviation: -95 to 65 degrees Celsius;

Leg distance: 0 to 855 000 Nautical miles;

Leg duration: 0 seconds to 300 hours;

Pressure altitude: -2 000 to 100 000 feet;

Station elevation (Altitudes tab): -2 000 to 15 000 feet;

Altimeter Setting: 500 to 1100 HPa (14.765 to 32.483 Inches Hg);

Station sea level pressure (Altitudes tab): 860 to 1090 HPa (25.396 to 32.188 Inches Hg);

Air data probe recovery coefficient (Ct): 0.6 to 1.0;

Bank angle: 0 – 89 degrees when set by the user. (If calculated from turn rate, may go to 89.9 degrees);

Turn rate: 0 – 100 degrees per second when set by the user. (If calculated from bank angle, may go to a maximum of 62 594 degrees per second);

Fuel limits

Volume: 1 to 1 000 000 Litres

Weight: limited by volume x highest density.

Fuel typeTemperature Range
Jet A– 40 to 50 Celsius
Jet A1 & JP8– 47 to 50 Celsius
JP5– 46 to 50 Celsius
JetB, JP4– 50 to 50 Celsius (freeze point is -58 C)
JP4US– 50 to 50 Celsius
Avgas– 50 to 50 Celsius
Fuel typeDensity range (Grams per Litre at 15 Celsius)
Jet A, Jet A1, JP8775 to 840
Jet B, JP4, JP4USA751 to 802
JP5788 to 845
Avgas611 to 770

For some calculations, the limits combine, and may reduce the ranges shown below. (For example, at 8 000 feet, the limit value of Mach 3.400 restricts CAS to 1 950 knots).
Some values, such as indicated altitude, do not have hard limits, and are restricted by related values only.

Sunrise, sunset and civil twilight times

Accuracy of the algorithm used is generally within 3 minutes in subpolar locations, and within 10 minutes in polar zones (latitudes higher than 66 degrees North or South).

Sun rise, set and civil twilight times can be determined between January 1, 1900, 00:00Z and December 31, 2999 23:59Z.


Click here to return to the home page.