Tag Archives: Dirigible

13 July 1919

Airship R 34 over Pulham Airship Station, Norfolk, United Kingdom, 1919.

13 July 1919: The Royal Air Force rigid airship R 34 completed its two-way crossing of the Atlantic Ocean and at 6:57 a.m. landed at Pulham Airship Station, Norfolk, United Kingdom. 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 return flight from Mineola, Long Island, New York took 73 hours, 3 minutes. According to records of the Fédération Aéronautique Internationale, the distance flown by R 34 on the return flight was 6,138 kilometers (3,814 miles).

This was the first “double crossing” by an aircraft. The round trip flight began at East Fortune Airship Station near Edinburgh, Scotland, on 2 July. The East-to-West crossing took 108 hours, 12 minutes.

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

This map shows the outbound and return tracks of His Majesty's Airship R 34, 2–13 July 1919.
This map shows the outbound and return tracks of His Majesty’s Airship R 34, 2–13 July 1919.

During the return flight on of the airship’s five engines suffered a broken connecting rod which damaged the cylinder block. It could not be repaired.

R 34 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.

Airship R 34 landing at Pulham, Norfolk, 13 Juky 1919. (Getty Images/Jimmy Sime)
Airship R 34 landing at Pulham, Norfolk, 13 July 1919. (Getty Images/Jimmy Sime)

© 2017, Bryan R. Swopes

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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.

R 34 was based on extensive study of the captured German Zeppelin, L-33. It was built for the Royal Naval Air Service ¹ by William Beardmore and Company, Inchinnan, Renfrewshire, Scotland. 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).

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)

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) propeller 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.

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.

CENTRAL CHANCERY OF THE ORDERS OF KNIGHTHOOD.

St. James’s Palace, S.W. 1,

23rd August 1919.

     The KING has been graciously pleased to give orders for the following appointment to the Most Excellent Order of the British Empire, in recognition of distinguished services to Aviation. :—

To be a Commander of the Military Division of the Said Most Excellent Order :—

Major George Herbert Scott, A.F.C., Royal Air Force, Commander of H.M. Airship R/34 on the outward voyage to the United States of America and and also on the homeward journey.

R 34 at Long Island, New York. (Evening Times)

Colonel (A./Brig.-Genl.) Edwards Maitland Maitland, C.M.G., D.S.O., Capt. (A./Major) Gilbert George Herbert Cooke, D.S.C., Lieutenant Guy Harris and 2nd Lieutenant John Durham Shotter were each awarded the Air Force Cross.

The Air Force Medal was awarded to Flight-Sergeant William Rose Gent, Sergt.-Maj. II. Walter Robert Mayes, D.S.M., Flight-Sergeant Walter James Robinson, Flight-Sergeant Reginald William Ripley, Flight-Sergeant Norman Albert Scull, and Sergeant Herbert Murray Watson, D.S.M.

¹ On 1 April 1918, the Royal Naval Air Service and the Royal Flying Corps were combined to form the Royal Air Force.

© 2018, Bryan R. Swopes

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6 May 1937

Airship D-LZ129 Hindenburg moored at New Jersey at the end of a previous voyage.
Airship D-LZ129 Hindenburg moored at New Jersey at the end of a previous voyage.

6 May 1937: After a three-day Trans-Atlantic crossing from Frankfurt, Germany, the rigid airship Hindenburg (D-LZ129) arrived at Lakehurst, New Jersey, with 36 passengers and 61 crewmembers.

Airship LZ-129 Hindenburg burning, 1925 hours, 6 May 1937, at Lakehurst, New Jersey.
Airship LZ-129 Hindenburg burning, 1925 hours, 6 May 1937, at Lakehurst, New Jersey.

At 7:25 p.m., while the airship was being moored, it suddenly caught fire. The fabric covering burned first, but then the hydrogen gas contained in the buoyancy tanks exploded and burned. Hindenburg settled to the ground and was completely destroyed within 30 seconds.

Water ballast rains down as Hindenburg burns at the mooring mast 1925 hours, 6 May 1937, at Lakehurst, New Jersey. SFA003016395
Hindenburg NY Daily News
Hindenburg settles to the ground. (Arthur Cofod, Jr./USAF 12293 A.C.)

Of those on board, 13 passengers and 22 crewmembers died. One member of the ground crew was also killed.

Surprisingly, though there were many survivors and witnesses—as well as newsreel footage of the accident—the cause has never been determined.

This dramatic accident ended the airship passenger industry.

Airship LZ-129 Hindenburg burning, 1925 hours, 6 May 1937, at Lakehurst, New Jersey.
Airship LZ-129 Hindenburg burning, 1925 hours, 6 May 1937, at Lakehurst, New Jersey.
Hindenburg burning

© 2015, Bryan R. Swopes

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12 February 1935

USS Macon (ZRS-5) recovering two Curtiss F9C Sparrowhawk scout biplanes. (U.S. Navy)
USS Macon (ZRS-5) recovering two Curtiss F9C Sparrowhawk scout biplanes. (U.S. Navy)

12 February 1935: The United States Navy rigid airship USS Macon (ZRS-5), under the command of Lieutenant Commander Herbert Victor Wiley, crashed into the Pacific Ocean off Monterey Bay, on the central California coastline. The airship soon sank to the sea floor, approximately 1,500 feet (457 meters) below. Of the crew of 76 men, 74 survived.

During an earlier transcontinental flight, USS Macon had encountered severe turbulence while crossing mountains in Arizona. A diagonal girder in one of the ring frames failed. Temporary repairs were made, but permanent repairs were deferred until the next scheduled overhaul.

On 12 February 1935, the airship flew into a storm near Point Sur, California. The ring frame failed and the upper vertical fin was lost. Pieces of broken girders punctured several of the aft helium cells.

USS Macon (ZRS-5) is seen from directly below as it passes over San Diego, California, 9 February 1934. (U.S. Navy)

With the loss of helium, Macon lost rear buoyancy and began to settle. To compensate, all engines were run at full power and ballast was released. The airship began to climb with a nose-up pitch angle. When it passed 2,800 feet (853.4 meters) altitude, it reached its Pressure Altitude Limit (“Pressure Height”). At this point, expanding helium began to vent from the gas cells. Macon continued rising until reaching 4,850 feet (1,478.3 meters), by which time it had lost so much helium that the engines could no longer keep it airborne and it again began to settle toward the ocean’s surface. The descent took twenty minutes.

One sailor jumped from the airship, but did not survive the fall. Another swam back to the sinking ship to collect personal belongings and drowned.

Survivors were rescued by three U.S. Navy Omaha-class light cruisers, USS Cincinnati (CL-6), USS Richmond (CL-9), and USS Concord (CL-10), which had responded to Macon‘s distress signal. Lieutenant Commander Wiley was commended by Claude A. Swandon, Secretary of the Navy, for his handling of the accident, and he was awarded the Navy and Marine Corps Medal for personally rescuing a member of the crew at the risk of his own life.

USS Macon was the U.S. Navy’s last rigid airship. For the next twenty years, all lighter-than-air craft were non-rigid “blimps”.

USS Macon (ZRS-5) under construction at the Goodyear Airdock, Akron, Ohio, 1933. (U.S. Navy)

USS Macon was built by the Goodyear-Zeppelin Corporation at Akron, Ohio. It was launched 21 April 1933, and commissioned 23 June 1933. Macon was constructed of duralumin ring frames and girders, covered with a fabric envelope. The rigid airship was 785 feet (239.3 meters) long with a maximum diameter of 132 feet, 10 inches (40.488 meters). The overall height was 146 feet, 2 inches (44.552 meters). The airship displaced 7,401,260 cubic feet of air (209,580 cubic meters). Lift was provided by 6,500,000 cubic feet (184,060 cubic meters) of non-flammable helium gas contained in 12 rubberized fabric gas cells.

Macon had a dead weight of 108.2 tons (98,157 kilograms) and a useful lift of 160,644 pounds (72,867 kilograms).

Maybach VL-2 60° V-12 in the collection of the National Air and Space Museum. (NASM)

Propulsion was provided by eight water-cooled, fuel-injected, 33.251 liter (2,029.077-cubic-inch-displacement) Maybach Motorenbau GmbH VL-2 overhead valve 60° V-12 gasoline engines producing a maximum 570 horsepower at 1,600 r.p.m., each, or 450 horsepower at 1,400 r.p.m. for cruise. In addition to gasoline, the VL-2 could also use blau gas (similar to propane) as fuel. The engines were reversible and drove Allison Engineering Co. out-drives, which turned three-bladed, fixed-pitch, rotatable propellers. The VL-2 is 6 feet, 5 inches (1.96 meters) long, 3 feet, 0 inches (0.91 meters) wide and 3 feet, 2 inches (0.97 meters) high. It weighs 2,530 pounds (1,148 kilograms).

The airship had a maximum speed of 75.6 knots (87.0 miles per hour/140.0 kilometers per hour).

USS Macon was armed with eight Browning .30-caliber machine guns for defense. It also carried five Curtiss-Wright Airplane Division F9C-2 Sparrowhawk reconnaissance airplanes in an internal hangar bay. These were small single-place, single-engine biplanes, with a length of 20 feet, 7 inches (6.274 meters) and wingspan of 25 feet, 5 inches (7.747 meters). The Sparrowhawk had an empty weight of 2,114 pounds (959 kilograms) and loaded weight of 2,776 pounds (1,259 kilograms).

The F9C-2 was powered by an air-cooled, supercharged, 971.930-cubic-inch displacement (15.927 liter) Wright Aeronautical Division Whirlwind R-975E-3 (R-975-11, -24 or -26) nine-cylinder radial engine with a compression ratio of 6.3:1. The R-975E-3 had a normal power rating of 420 horsepower at 2,200 r.p.m., and 440 to 450 horsepower at 2,250 r.p.m. for takeoff, depending on variant. These were direct drive engines which turned two-bladed propellers. They were 3 feet, 7.00 inches to 3 feet, 7.47 inches (1.092–1.104 meters) long, 3 feet, 11 inches to 3 feet, 11.25 inches (1.143–1.149 meters) in diameter, and weighed from 660 to 700 pounds (299–317.5 kilograms).

The Sparrowhawk had a maximum speed of 176 miles per hour (283 kilometers per hour), a range of 297 miles (478 kilometers) and a service ceiling of 19,200 feet (5,852 meters).

The airplane was armed with two fixed Browning .30-caliber machine guns, synchronized to fire forward through the propeller arc.

Four of Macon‘s fighters, Bureau of Aeronautics serial numbers A9058–A9061, were lost when the airship went down.

Curtiss F9C-2 Sparrowhawk, Bu. No. 9056. (U.S. Navy)
Curtiss-Wright F9C-2 Sparrowhawk, Bu. No. A9056. (U.S. Navy)
Midshipman Wiley, 1915 (The Lucky Bag)

Herbert Victor Wiley was born at Wheeling, Missouri, 16 May 1891. He was the second of three children of Joel Augustine Wiley, a dry goods merchant, and Minnie Alice Carey Wiley.

Herbert Victor Wiley entered the United States Naval Academy at Annapolis, Maryland, as a midshipman, 10 May 1911. During his third year, Midshipman Wiley served aboard the battleship USS Wisconsin (BB-9). “Doc” Wiley graduated 5 June 1915 and was commissioned an ensign, United States Navy.

Ensign Wiley was assigned to the Pennsylvania-class armored cruiser USS San Diego (ACR-6), then the flagship of the U.S. Pacific Fleet.

Ensign Wiley was promoted to the rank of lieutenant (junior grade), effective 15 October 1917. On this same date, Wiley was promoted to the temporary rank of lieutenant. This rank became permanent 1 July 1920.

Lieutenant Wiley married Miss Marie Frances Scroggie, circa 1919. They would have two sons, Gordon Scroggie Wiley and David Carey Wiley. Mrs Wiley died 17 September 1930 in Los Angeles County, California.

On 11 April 1923, Lieutenant Wiley was assigned to the Naval Air Station, Lakehurst, New Jersey. He served aboard the U.S. Navy’s first rigid airship, USS Shenandoah (ZR-1), and was aboard on its first flight, 4 September 1923. A year later, as Shenandoah‘s mooring officer, Wiley was standing by at Lakehurst, New Jersey, when, on 3 September 1925, the airship was destroyed during a violent storm. Of its 40-man crew, 14 were killed.

USS Los Angeles (ZR-3), circa 1929. (Wikipedia)

Lieutenant Wiley was then assigned to the dirigible USS Los Angeles (ZR-3), 19 January 1925. (Los Angeles was built by Luftschiffbau Zeppelin GmbH, and designated LZ-126. It was commissioned in the U.S. Navy in 1924.) Wiley was promoted to lieutenant commander 17 December 1925 and transferred to NAS Pensacola, Florida. In 1928, Lieutenant Commander Wiley served as the executive officer of Los Angeles. He commanded the airship, April 1929–April 1930.

USS Akron (ZRS-4), 13 May 1932. (United States Navy)

Lieutenant Commander Wiley was the executive officer of USS Akron (ZRS-4) when it was destroyed in a storm off the coast of New Jersey, 4 April 1933. Of the crew of 76 men, only 3, including Wiley, survived.

The three survivors of the USS Akron disaster: Aviation Metalsmith 2nd class (AM2c) Moody E. Erwin, Lieutenant Commander Herbert V. Wiley, and Boatswain’s Mate 2nd Class (BM2c) Richard E. Deal. (U.S. Navy)

Wiley took command of USS Macon 11 July 1934.

On 23 September 1935, Lieutenant Commander Wiley married Mrs. Charlotte Mayfield Weeden (née Charlotte May Mayfield) in Los Angeles County, California.

Lieutenant Commander Wiley was promoted to the rank of commander 1 November 1935. He was assigned to the battleship USS Mississippi (BB-41). In 1938, he transferred to the U.S. Naval Academy.

Commander Wiley was promoted to the rank of captain, with date of rank from 1 July 1941.

USS Paul Jones (DD-230), 1942. (U.S. Navy)

During World War II, Captain Wiley commanded Destroyer Squadron 29 (consisting of thirteen Clemson-class “flush-deck” destroyers) with the Asiatic Fleet. His flagship was USS Paul Jones (DD-230).

Captain Herbert V. Wiley on the bridge of USS West Virginia (BB-48). (U.S. Navy)

Captain Wiley took command of the Colorado-class battleship USS West Virginia (BB-48), 15 January 1944. The battleship had been sunk at Pearl Harbor, Hawaii, 7 December 1941. It was refloated and returned to a shipyard on the West Coast of the United States, where it was completely rebuilt and modernized. Wiley was awarded the Navy Cross for extraordinary heroism at the Battle of the Surigao Strait, 25 October 1944.¹

During the Battle of Okinawa, Captain Wiley remained on the bridge of his battleship for thirty consecutive days. During this period, West Virginia was hit by a kamikaze suicide attack.

Captain Wiley served as West Virginia‘s commanding officer until 2 May 1945.

Colorado-class battleship USS West Virginia (BB-48), 2 June 1944. (U.S. Navy)

Captain Wiley was promoted to the rank of rear admiral, and commanded a naval aviation facility on the island of Trinidad. While there, he suffered a heart attack. He retired from the U.S. Navy on 1 January 1947, after nearly 36 years of service.

Following his naval career, Admiral Wiley was the dean of the School of Engineering at the University of California, Berkeley.

Rear Admiral Herbert Victor Wiley, United States Navy, died at Pasadena, California, 28 April 1954. He was buried at the Golden Gate National Cemetery.

Captain Wiley’s USS West Virginia (BB-48) fires its eight 16-inch (408 milimeter) guns on the advancing Imperial Japanese Navy task force, 25 October 1944. (U.S. Navy)

¹ The Battle of the Surigao Strait was a major naval engagement between surface forces of the Imperial Japanese Navy and the United States Navy, a part of the larger Battle of Leyte Gulf. It was the last battleship vs. battleship naval battle.

Highly Recommended:

History of United States Naval Operations in World War II, Volume XII, Leyte, June 1944–January 1945, by Rear Admiral Samuel Eliot Morison, United States Navy. Little, Brown and Company, Boston, 1958.

The Battle of Leyte Gulf 23–26 October 1944, by Lieutenant Commander Thomas Joshua Cutler, United States Navy. HarperCollins Publishers, Inc., New York, 1994.

© 2019, Bryan R. Swopes

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17 October 1913

Zeppelin L2 LZ 18 (© Ullstein Bild)
Zeppelin L2 (LZ 18). The smoke is coming from the forward engine car. (© Ullstein Bild)

17 October 1913: On the morning of a scheduled test flight at Flugplatz Johannisthal-Adlershof, an airfield south east of Berlin, Germany, Marine-Luftschiffes L2, the second rigid airship built for the Kaiserliche Marine (Imperial German Navy) by Luftschiffbau Zeppelin at Friedrichshafen, was delayed by problems with the engines. The morning sun heated the hydrogen contained in the airship’s gas bags, causing the gas to expand and increasing the airship’s buoyancy.

L2 New York Times 18 October 1913
L2 at altitude. This photograph was published in the New York Times, 18 October 1913. (George Grantham Bain Collection, Library of Congress)

Once released, L2 rapidly rose to approximately 2,000 feet (610 meters). The hydrogen expanded even more due to the decreasing atmospheric pressure. To prevent the gas bags from rupturing, the crew vented hydrogen through relief valves located along the bottom of the hull.

L2 leaves a trail of smoke as it crashes to the ground, 17 October 1913. (Zeppelin-Luftschiffe.com)

In this early design, the builders had placed the relief valves too close to the engine cars. Hydrogen was sucked into the engines’ intakes and detonated. L2 caught fire and a series of explosions took place as it fell to the ground.

All 28 persons on board were either killed immediately, or died of their injuries shortly thereafter.

At the time of the accident, L2 had made ten flights, for a total of 34 hours, 16 minutes.

The flight crew of Marine-Luftschiffes L2 (via LZDEAM.NET)
The flight crew of Marine-Luftschiffes L2

A contemporary news article described the accident:

AIRSHIP AND BALLOON NEWS.

The Wreck of the Zeppelin.

ELSEWHERE in this issue we comment upon the terrible catastrophe which befell the German Navy’s new Zeppelin L2, on Friday last week, just outside the Johannisthal aerodrome, near Berlin. From the following official account it appears that the airship was making a trial voyage:—

“She started this morning for a high flight, with twenty-eight persons on board. After three minutes she had attained a height of two hundred metres (over 600 feet) when flames burst forth between the fore engine-car and the envelope. In two or three seconds the whole ship was on fire and an explosion occurred. At the same time the airship fell slowly head downwards, until she was forty metres (130 feet) from the earth. Here a second explosion took place, presumably of benzine. When the vessel struck the earth a third explosion occurred, and the framework collapsed. A company of pioneers and guide-rope men hastened to the scene, and doctors were immediately in attendance. Two of the crew were picked up outside the ship still alive, but they died shortly afterwards. Lieut. Bleuel, who was severely injured, was taken to hospital. The remaining 25 of the crew had been killed during the fall of the airship or by the impact with the earth. The cause of the disaster appears to have been, so far as is at present known, an outbreak of fire in or over the fore engine-car.”

The commanding officer was Lieut. Freyer, and he was assisted by Lieuts. A. Trenck, Hansmann, and Busch, with thirteen warrant and petty officers. There were also on board as representing the German Navy, Commander Behnisch, Naval Construtors Neumann, and Pretzker, and three secretaries, named Lehmann, Priess, and Eisele. The Zeppelin Co. were represented by Capt. Glund and three mechanics, and Lieut. Baron von Bleuel was a passenger. The last mentioned was the only one rescued alive, and he died from his injuries a few hours later.

One of the first messages of sympathy was addressed by President Poincare’ to the German Emperor.

Extraordinary scenes, showing the way in which the calamity was regarded in Germany, were witnessed at the funeral service of 23 of the victims, held on Tuesday at the Garrison Church. Upon each of the coffins Prince Adalbert placed a wreath from the German Emperor and Empress, who with the Crown Prince and princess, and Princes Eitel Friedrich, Adalbert, August Wilhelm,  Oscar and Joachim attended in person, while the Government was represented by the Chancellor, Admiral Tirpitz, the Chief of the General Staff, Field Marshall von Moltke, and many other officers. Count Zeppelin was also present.

FLIGHT, First Aero Weekly in the World. No. 252. (No. 43, Vol. V.), 25 October 1913 at Page 1179

Wreckage of the L2 at Flugplatz Johannisthal-Adlershof, Germany, 17 October 1913. (Photo Gebr. Haeckel, Berlin # 3227/2)
Wreckage of the L2 at Flugplatz Johannisthal-Adlershof, Germany, 17 October 1913. (Gebrüder Haeckel, Berlin  3227/2)

The Marine-Luftschiffes L2 had been designated LZ 18 by the builders. Both identifications are commonly used (sometimes, L.II). Technical data for L2 is limited and contradictory. One source describes it as having a length of 158 meters (518 feet, 4½ inches), with a diameter of 16.6 meters (54 feet, 5½ inches). Another states 492 feet.

Eighteen hydrogen-filled gas bags were placed inside the rigid framework and covered with an aerodynamic envelope. The airship had a volume of 27,000 cubic meters (953,496 cubic feet), and a lift capacity of 11.1 tons (24,471 pounds).

Four water-cooled, normally-aspirated, 22.921 liter (1,398.725 cubic inches) Maybach C-X six-cylinder inline engines were carried in two cars beneath the hull. They produced 207 horsepower at 1,250 r.p.m., burning bensin (gasoline). Each engine drove a four-blade propeller through a drive shaft and gear arrangement. These engines weighed 414 kilograms (913 pounds), each.

L2 had a maximum speed of approximately 60 miles per hour (97 kilometers per hour). At reduced speed, L2 had a 70 hour radius of action.

The Kaiser and Imperial princes lead the funeral procession.
The Imperial Princes lead the funeral procession. Left to right, Prince Oskar, Prince August Wilhelm, Prince Adalbert, Crown Prince Wilhelm, Prince Eitel Friederich, Prince Joachim.

© 2016, Bryan R. Swopes

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