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Great Circle Map Interactive tool for plotting great circle routes on a sphere. Great Circle Mapper Interactive tool for plotting great circle routes. Great Circle Calculator deriving (initial) course and distance between two points. Great Circle Distance Graphical tool for drawing great circles over maps. Also shows distance and azimuth in a ...
A diagram illustrating great-circle distance (drawn in red) between two points on a sphere, P and Q. Two antipodal points, u and v are also shown. The great-circle distance, orthodromic distance, or spherical distance is the distance between two points on a sphere, measured along the great-circle arc between them. This arc is the shortest path ...
The most common standard flight length measurement is by great-circle distance, a formula that calculates the shortest distance across the curvature of the earth for two airports' ARPs. [5] It is the only measurement that is constant on a given city-pair route and unaffected by operational variances. [ 6 ]
The shortest distance between two geographical points is the great-circle distance. In the example (right), the aircraft travelling westward from North America to Japan is following a great-circle route extending northward towards the Arctic region. The apparent curve of the route is a result of distortion when plotted onto a conventional map ...
With its great-circle distance, it set the record both for world's longest domestic flight as well as the world's longest commercial flight. Air Tahiti Nui began the route on 15 March 2020, departing Faa'a International Airport at 3:14 am local time as flight TN64, flying nonstop to Charles de Gaulle Airport and landing at 6:00 am local time on ...
Routing efficiency may be defined as the great-circle distance divided by the actual route distance = Off-nominal temperatures may be accounted for with a temperature efficiency factor η temp {\displaystyle \eta _{\text{temp}}} (e.g. 99% at 10 deg C above International Standard Atmosphere (ISA) temperature).
Pilots use aeronautical charts based on LCC because a straight line drawn on a Lambert conformal conic projection approximates a great-circle route between endpoints for typical flight distances. The US systems of VFR (visual flight rules) sectional charts and terminal area charts are drafted on the LCC with standard parallels at 33°N and 45 ...
The variation that applies locally is also shown on the flight map. Once the pilot has calculated the actual headings required, the next step is to calculate the flight times for each leg. This is necessary to perform accurate dead reckoning. The pilot also needs to take into account the slower initial airspeed during climb to calculate the ...