Daily Archives: July 6, 2017

2–6 July 1919

The Royal Air Force rigid airship HMA R34 landing at Mineola, Long Island, New York, 6 July 1919.

2–6 July 1919: Two weeks after Alcock and Brown made the first non-stop transatlantic airplane flight, the Royal Air Force rigid airship R 34 landed at Mineola, Long Island, New York, completing the first East-to-West Atlantic crossing by air. The airship was under the command of Major George Herbert Scott, A.F.C., R.A.F. The total complement, including passengers, was 30 persons.

The 108 hour, 12 minute flight started from East Fortune Airship Station near Edinburgh, Scotland at 2:38 a.m., British Summer Time (1:38 a.m., Greenwich mean time) on Wednesday, 2 July. R 34 arrived at Mineola at 9:54 a.m. Eastern Daylight Savings Time (1:54 p.m. G.M.T.) on Sunday, 6 July. According to records of the Fédération Aéronautique Internationale, the distance flown by R 34 was 5,797 kilometers (3,602 miles). On arrival, the airship had only 40 minutes of fuel remaining.

This chart of R34's flight was published in the Times, 7 July 1919.
This chart of R34’s flight was published in The Times, 7 July 1919.

R34 was based on extensive study of the captured German Zeppelin, L-33. It was built for the Royal Naval Air Service by William Beardmore and Company, Inchinnan, Renfrewshire, Scotland, but with the end of World War I, the RNAS and Royal Flying Corps were merged to become the Royal Air Force. 643 feet long (196 meters), with a maximum diameter of 78 feet, 9 inches (24 meters), the dirigible had a total volume of 1,950,000 cubic feet (55,218 cubic meters). The airship had a light weight metal structure covered with doped fabric. Buoyancy was provided by 55,185 cubic meters (1,948,840 cubic feet) of gaseous hydrogen contained in 19 gas bags inside the airship’s envelope. R 34 had a gross lift capacity of 59 tons. Useful lift was 58,240 pounds (26,417 kilograms).

The airship was powered by five water-cooled, normally-aspirated, 15.395-liter (989.483-cubic-inch-displacement) Sunbeam Maori Mk.IV dual overhead cam (DOHC) 60° V-12 engines with four valves per cylinder. The Mk.IV’s cylinder bore had been increased from 100 millimeters to 110 millimeters (3.94 to 4.33 inches), resulting in a larger displacement than previous Maori variants. The Maori Mk.IV was a direct-drive engine which produced 275 horsepower at 2,000 r.p.m. Each engine turned a two-bladed, 17 foot diameter (5.182 meter) propellers through a remote gearbox with a 0.257:1 reduction. The two wing engines were equipped with reversible gearboxes. With the engines turning 1,800 r.p.m., the R 34 had a cruising speed of 47 knots (54 miles per hour/87 kilometers per hour) and consumed 65 gallons (246 liters) of fuel per hour.

Crewmen working in the forward control car of R34 during the Atlantic crossing, July 1918. (National Museums Scotland)
Crewmen working in the forward control car of R 34 during the Atlantic crossing, July 1918. (National Museums Scotland)

R 34 made the return flight to England, 10–13 July 1919, in 75 hours, 3 minutes.

Major Scott was appointed Commander of the Most Excellent Order of the British Empire.

© 2017, Bryan R. Swopes

Facebooktwittergoogle_plusredditpinterestlinkedinmailby feather