Norfolk to Lord Howe Islands Great Circle Distance

On March 31st 1931, Sir Francis Chichester left the Northern Tip of New Zealand on an East to West flight across the Tasman sea. He stopped to refuel at Norfolk Island and Lord Howe Island. Let’s determine the great circle distance and bearings that his Gypsy Moth float plane Madam Elijah ZK-AKK had to fly between these two points using the Spherical Haversine law.

norfolk_lordhowe
norfolk_lordhowe

The great circle distance using the Spherical Haversine law is:

gcd_soln
gcd_soln

GCD = 895.3Km (483.4Nmiles), Bearing of Lord Howe Island = 249.9deg. This agrees with the Google Earth plot.

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