Tag Archives: First Flight

27 January 1939

Lockheed XP-38 Lightning 37-457 at March Field, Riverside County, California, January 1939. (San Diego Air and Space Museum)
Lockheed XP-38 Lightning 37-457 at March Field, Riverside County, California, January 1939. (San Diego Air and Space Museum Archive)

27 January 1939: First Lieutenant Benjamin Scovill Kelsey, Air Corps, United States Army, made the first flight of the prototype Lockheed XP-38 Lightning, serial number 37-457, at March Field, Riverside County, California.

This was a short flight. Immediately after takeoff, Kelsey felt severe vibrations in the airframe. Three of four flap support rods had failed, leaving the flaps unusable.

1st Lieutenant Benjamin Scovill Kelsey, Air Corps, United States Army, 1937.

Returning to March Field, Kelsey landed at a very high speed with a 18° nose up angle. The tail dragged on the runway. Damage was minor and the problem was quickly solved.

Designed by an engineering team led by Hall L. Hibbard, which included the legendary Clarence L. “Kelly” Johnson, the XP-38 was a single-place, twin-engine fighter designed for very high speed and long range. It was an unusual configuration with the cockpit and armament in a center nacelle, with two longitudinal booms containing the engines and propellers, turbochargers, radiators and coolers. The Lightning was equipped with tricycle landing gear. The nose strut retracted into the center nacelle and the two main gear struts retracted into bays in the booms. To reduce drag, the sheet metal used butt joints with flush rivets.

The prototype had been built built at Lockheed’s factory in Burbank, California. On the night of 31 December 1938/1 January 1939, it was transported to March Field aboard a convoy of three trucks. Once there, the components were assembled by Lockheed technicians working under tight security.

Lockheed XP-38 Lightning 37-457. (San Diego Air and Space Museum)
Lockheed XP-38 Lightning 37-457. (San Diego Air and Space Museum Archive)
Lockheed XP-38 Lightning 37-457. (San Diego Air and Space Museum Archive)
Left profile, Lockheed XP-38 Lightning 37-457. (U.S. Air Force)
Left profile, Lockheed XP-38 Lightning 37-457. (U.S. Air Force)
Lockheed XP-38 Lightning 37-457

The XP-38 was 37 feet, 10 inches (11.532 meters) long with a wingspan of 52 feet (15.850 meters) and overall height of 12 feet, 10 inches (3.952 meters). Its empty weight was 11,507 pounds (5,219.5 kilograms). The gross weight was 13,904 pounds (6,306.75 kilograms) and maximum takeoff weight was 15,416 pounds (6,992.6 kilograms).

The Lightning was the first production airplane to use the Harold Caminez-designed, liquid-cooled, supercharged, 1,710.60-cubic-inch-displacement (28.032 liter) Allison Engineering Company V-1710 single overhead cam 60° V-12 engines. When installed on the P-38, these engines rotated in opposite directions. The XP-38 used a pair of experimental C-series Allisons, with the port V-1710-C8 (V-1710-11) engine being a normal right-hand tractor configuration, while the starboard engine, the V-1710-C9 (V-1710-15), was a left-hand tractor. Through a 2:1 gear reduction, these engines drove the 11-foot (3.353 meters) diameter, three-bladed Curtiss Electric variable-pitch propellers inward to counteract the torque effect of the engines and propellers. (Viewed from the front of the airplane, the XP-38’s starboard propeller turned clockwise, the port propeller turned counter-clockwise. The direction of rotation was reversed in the YP-38 service test prototypes and production P-38 models.) The engines have long propeller gear drive sections to aid in streamlining aircraft, and are sometimes referred to as “long-nose Allisons.”

The V-1710-11 and -15 had a compression ratio of 6.65:1. They had a continuous power rating of 1,000 horsepower at 2,600 r.p.m. at Sea Level, and 1,150 horsepower at 2,950 r.p.m. for takeoff. The combination of a gear-driven supercharger and an exhaust-driven General Electric B-1 turbosupercharger allowed these engines to maintain their rated power levels to an altitude of 25,000 feet (7,620 meters).

The -11 and -15 were 7 feet, 10.46 inches (2.399 meters) long. The -11 was 3 feet, 6.59 inches (1.082 meters) high and 2 feet, 4.93 inches (0.7348 meters) wide. It weighed 1,300 pounds (589.7 kilograms). The -15 was 3 feet, 4.71 inches (1.034 meters) high, 2 feet, 4.94 inches (0.7351 meters) wide, and weighed 1,305 pounds (591.9 kilograms).

A 1939 Allison Engine Company V-1710-33 liquid-cooled, supercharged SOHC 60° V-12 aircraft engine at the Smithsonian Institution National Air and Space Museum. This engine weighs 1,340 pounds (607.8 kilograms) and produced 1,040 horsepower at 2,800 r.p.m. During World War II, this engine cost $19,000. (NASM)
A 1939 Allison Engine Company V-1710-33 liquid-cooled, supercharged SOHC 60° V-12 aircraft engine at the Smithsonian Institution National Air and Space Museum. This engine weighs 1,340 pounds (607.8 kilograms) and produced 1,040 horsepower at 2,800 r.p.m. During World War II, this engine cost $19,000. (NASM)

The XP-38 had a maximum speed of 413 miles per hour (664.66 kilometers per hour) at 20,000 feet (6,096 meters) and a service ceiling of 38,000 feet (11,582.4 meters).

The XP-38 was unarmed, but almost all production Lightnings carried a 20 mm auto cannon and four Browning .50-caliber machine guns grouped together in the nose. They could also carry bombs or rockets and jettisonable external fuel tanks.

Lockheed XP-38 37-457. (San Diego Air and Space Museum Archive)
Lockheed XP-38 37-457. (San Diego Air and Space Museum Archive)

The prototype XP-38 was damaged beyond repair when, on approach to Mitchel Field, New York, 11 February 1939, both engines failed to accelerate from idle due to carburetor icing. Unable to maintain altitude, Lieutenant Kelsey crash landed on a golf course and was unhurt.

Testing continued with thirteen YP-38A pre-production aircraft and was quickly placed in full production. The P-38 Lightning was one of the most successful combat aircraft of World War II. By the end of the war, Lockheed had built 10,037 Lightnings.

Lockheed test pilot Tony LeVier in the cockpit of P-38J-10-LO Lightning 42-68008. (Lockheed Martin)

© 2019, Bryan R. Swopes

25 January 1946

Jack Valentine Woolams, Chief Experimental Test Pilot, Bell Aircraft Corporation. (John Trudell/Ancestry)

25 January 1946:¹ Near Pinecastle Army Airfield in central Florida, Bell Aircraft Corporation Senior Experimental Test Pilot Jack Woolams made the first unpowered glide flight of the XS-1 supersonic research rocketplane, 46-062.

46-062 was the first of three XS-1 rocketplanes built by Bell for the U.S. Army Air Corps and the National Advisory Committee for Aeronautics (NACA) to explore flight at speeds at and beyond Mach 1, the speed of sound. The airplane had been rolled out of Bell’s plant at Buffalo, New York, on 27 December 1945. The rocket engine, which was being developed by Reaction Motors, Inc., at Franklin Lakes, New Jersey, was not ready, so the experimental aircraft was carrying ballast in its place for the initial flight tests.

Jack Woolams with the second Bell XS-1, 46-063. (Niagara Aerospace Museum)

The XS-1 was to be air-dropped from altitude by a modified heavy bomber so that its fuel could be used for acceleration to high speeds at altitude, rather than expended climbing from the surface. Bell manufactured B-29B Superfortresses at its Atlanta, Georgia, plant and was therefore very familiar with its capabilities. A B-29, 45-21800, was selected as the drop ship and modified to carry the rocketplane in its bomb bay.

Boeing B-29-96-BW Superfortress 45-21800 carries a Bell XS-1 rocketplane. (Bell Aircraft Museum)

Pinecastle Army Airfield was chosen as the site of the first flight tests because it had a 10,000 foot (3,048 meter) runway and was fairly remote. There was an adjacent bombing range and the base was a proving ground for such aircraft as the Consolidated B-32 Dominator. (Today, Pinecastle A.A.F. is known as Orlando International Airport, MCO.)

Bell XS-1 46-062 was placed in a pit at Pinecastle A.A.F. so that the B-29 drop ship in the background could be positioned over it. (NASA)
Bell XS-1 46-062 was placed in a pit at Pinecastle A.A.F. so that the B-29 drop ship in the background could be positioned over it. (NASA)

The B-29 carrying the XS-1 took off from Pinecastle at 11:15 a.m., and began its climb to altitude. Woolams was in the forward crew compartment. As the bomber reached approximately 10,000 feet (3,048 meters), he entered the bomb bay and climbed down into the cockpit of the research aircraft. At the drop altitude, the B-29 was flying at 180 miles per hour (290 kilometers per hour) with the inboard propellers feathered and flaps lowered to 20°.

The XS-1 dropped away smoothly. Woolams flew the rocketplane to a maximum 275 miles per hour (443 kilometers per hour), indicated air speed, during this first glide test. He described the rocketplane as, “solid as a rock, experiencing absolutely no vibration or noise. At the same time, it felt as light as a feather during maneuvers due to the lightness, effectiveness and nice balance between the controls.” Woolams described the visibility from the cockpit as “not good, but adequate.”

The duration of the first glide flight was about ten minutes. Woolams misjudged his approach to Pinecastle and landed slightly short of the runway, on the grass shoulder, but the XS-1 was not damaged.

The conclusion of Woolams’ flight report is highly complementary of the experimental airplane:

#000000; font-family: courier new, courier;">11.  Of all the airplanes the writer has flown, only the XP-77 and the Heinkel 162 compare with the XS-1 for maneuverability, control relationship, response to control movements, and lightness of control forces. Although these impressions were rather hastily gained during a flight which lasted only 10 minutes, it is the writer’s opinion that due to these factors and adding to them the security which the pilot feels due to the ruggedness, noiselessness, and smoothness of response of this airplane, it is the most delightful to fly of them all.

#0000ff;">#000000;">—PILOT’S REPORT, Flight , by Jack Woolams

Jack Woolams made ten glide flights with 46-062, evaluating its handling characteristics and stability. The aircraft was returned to Bell to have the rocket engine installed, and it was then sent to Muroc Army Airfield in the high desert of southern California for powered flight tests. (Muroc A.A.F. was renamed Edwards Air Force Base in 1949.)

Bell XS-1 46-062 was later named Glamorous Glennis by its military test pilot, Captain Charles E. Yeager, U.S. Army Air Corps. On 14 October 1947, Chuck Yeager flew it to Mach 1.06 at 13,115 meters (43,030 feet). Today the experimental aircraft is on display at the Smithsonian Institution National Air and Space Museum.

The Bell XS-1, later re-designated X-1, was the first of a series of rocket-powered research airplanes which included the Douglas D-558-II Skyrocket, the Bell X-2, and the North American Aviation X-15, which were flown by the U.S. Air Force, U.S. Navy, NACA and its successor, NASA, at Edwards Air Force Base to explore supersonic and hypersonic flight and at altitudes to and beyond the limits of Earth’s atmosphere.

An X-1 under construction at teh Bell Aircraft Corporation plant, Buffalo, New York. (Bell Aircraft Corporation)
An X-1 under construction at the Bell Aircraft Corporation plant, Buffalo, New York. (Bell Aircraft Corporation)

The X-1 has an ogive nose, similar to the shape of a .50-caliber machine gun bullet, and has straight wings and tail surfaces. It is 30 feet, 10.98 inches (9.423 meters) long with a wing span of 28.00 feet (8.534 meters) and overall height of 10 feet, 10.20 inches (3.307 meters).

46-062 was built with a thin 8% aspect ratio wing, while 46-063 had a 10% thick wing. The wings were tapered, having a root chord of 6 feet, 2.2 inches (1.885 meters) and tip chord of 3 feet, 1.1 inches (0.942 meters), resulting in a total area of 130 square feet (12.1 square meters). The wings have an angle of incidence of 2.5° with -1.0° twist and 0° dihedral. The leading edges are swept aft 5.05°.

The horizontal stabilizer has a span of 11.4 feet (3.475 meters) and an area of 26.0 square feet (2.42 square meters). 062’s stabilizer has an aspect ratio of 6%, and 063’s, 5%.

The fuselage cross section is circular. At its widest point, the diameter of the X-1 fuselage is 4 feet, 7 inches (1.397 meters).

46-062 had an empty weight is 6,784.9 pounds (3,077.6 kilograms), but loaded with propellant, oxidizer and its pilot with his equipment, the weight increased to 13,034 pounds (5,912 kilograms).

The X-1 was designed to withstand an ultimate structural load of 18g.

Front view of a Bell XS-1 supersonic research rocketplane at the Bell Aircraft plant, Buffalo, New York. (Bell Aircraft Museum)

The X-1 was powered by a four-chamber Reaction Motors, Inc., 6000C4 (XLR11-RM-3 ) rocket engine which produced 6,000 pounds of thrust (26,689 Newtons). This engine burned a 75/25 mixture of ethyl alcohol and water with liquid oxygen. Fuel capacity is 293 gallons (1,109 liters) of water/alcohol and 311 gallons (1,177 liters) of liquid oxygen. The fuel system was pressurized by nitrogen at 1,500 pounds per square inch (103.4 Bar).

The X-1 was usually dropped from the B-29 flying at 30,000 feet (9,144 meters) and 345 miles per hour (555 kilometers per hour). It fell as much as 1,000 feet (305 meters) before beginning to climb under its own power.

The X-1’s performance was limited by its fuel capacity. Flying at 50,000 feet (15,240 meters), it could reach 916 miles per hour (1,474 kilometers per hour), but at 70,000 feet (21,336 meters) the maximum speed that could be reached was 898 miles per hour (1,445 kilometers per hour). During a maximum climb, fuel would be exhausted as the X-1 reached 74,800 feet (2,799 meters). The absolute ceiling is 87,750 feet (26,746 meters).

Bell X-1 46-062 on the dry lake bed at Muroc Army Airfield, circa 1947. (NASM)

The X-1 had a minimum landing speed of 135 miles per hour (217 kilometers per hour) using 60% flaps.

There were 157 flights with the three X-1 rocket planes. The number one ship, 46-062, Glamorous Glennis, made 78 flights. On 26 March 1948, with Chuck Yeager again in the cockpit, it reached reached Mach 1.45 (957 miles per hour/1,540 kilometers per hour) at 71,900 feet (21,915 meters).

The third X-1, 46-064, made just one glide flight before it was destroyed 9 November 1951 in an accidental explosion.

The second X-1, 46-063, was later modified to the X-1E. It is on display at the NASA Dryden Research Center at Edwards Air Force Base. Glamorous Glennis is on display at the Smithsonian Institution National Air and Space Museum, next to Charles A. Lindbergh’s Spirit of St. Louis.

Bell X-1, 46-062, Glamorous Glennis, on display at the National Air and Space Museum, Washington, D.C. (NASM)
Bell X-1 46-062, Glamorous Glennis, on display at the National Air and Space Museum, Washington, D.C. (NASM)

Jack Valentine Woolams was born on Valentine’s Day, 14 February 1917, at San Francisco, California. He was the second of three children of Leonard Alfred Woolams, a corporate comptroller, and Elsa Mathilda Cellarius Woolams. He grew up in San Rafael, California, and graduated from Tamalpais School in 1935.

Jack Woolams, 1941

After two years of study at The University of Chicago, in 1937 Woolams entered the Air Corps, U.S. Army, as an aviation cadet. He trained as a pilot at Kelly Field, San Antonio, Texas. On graduation, 16 June 1938, he was discharged as an aviation cadet and commissioned as a second lieutenant, Air Reserve. He was assigned to Barksdale Army Air Field, Louisiana, where he flew the Boeing P-26 and Curtiss P-36 Hawk.

On 10 February 1939, Lieutenant Woolams was one of three Air Corps officers thrown into the waters of Cross Lake, near Shreveport, Louisiana, when the boat, owned by Woolams, capsized in 4 foot (1.2 meters) waves. Woolams and Lieutenant J.E. Bowen were rescued after 4 hours in the water, but the third man, Lieutenant Wilbur D. Camp, died of exposure.

Lieutenant Woolams transferred from active duty to inactive reserve status in September 1939 in order to pursue his college education at The University of Chicago, where he was a member of the Alpha Delta Phi (ΑΔΦ) fraternity. While at U. of C., he played on the university’s football and baseball teams, and was a member of the dramatic society. Woolams graduated 18 July 1941 with a Bachelor of Arts (A.B.) degree in Economics.

Mr. and Mrs. Jack V. Woolams, 16 June1941. (Unattributed)

Jack Woolams married Miss Mary Margaret Mayer at the bride’s home in Riverside, Illinois, 16 June 1941. They would have three children. Miss Mayer was also a 1941 graduate from the University of Chicago. She had been Woolams’ student in the Civilian Pilot Training Program.

Woolams became a production test pilot for the Bell Aircraft Corporation at Buffalo, New York. He tested newly-built Bell P-39 Airacobra fighters. As he became more experienced, he transitioned to experimental testing with the P-39, P-63 King Cobra, and the jet-powered P-59 Airacomet.

Jack Valentine Woolams, Chief Experimental Test Pilot, Bell Aircraft Corporation, circa 1946. (Niagara Aerospace Museum)

On 28 September 1942, Jack Woolams flew a highly-modified Bell P-39D-1-BE Airacobra, 41-38287, from March Field, near Riverside, California, to Bolling Field, Washington, D.C., non-stop. The duration of the flight was approximately 11 hours. The modifications were intended to allow P-39s to be flown across the Pacific Ocean to Hawaii and on to the Soviet Union for delivery under Lend Lease.

During the summer of 1943, Woolams flew the first Bell YP-59A Airacomet, 42-108771, to an altitude of 47,600 feet (14,508 meters) near Muroc Army Air Field in California.

On 5 January 1945, Woolams was forced to bail out of a Bell P-59A-1-BE, 44-22616. He suffered a deep laceration to his head as he left the airplane. He lost his flight boots when the parachute opened, and on landing, had to walk barefoot through knee-deep snow for several miles to reach a farm house. The deep snow prevented the company’s ambulance from getting to Woolams. Bell Aircraft president Lawrence D. Bell sent the company’s second prototype Bell Model 30 helicopter, NX41868, flown by test pilot Floyd Carlson, to transport a doctor, J.A. Marriott, M.D., to the location. Another Bell test pilot, Joe Mashman, circled overhead in a P-63 King Cobra to provide a communications link. Later in the day, an ambulance was able to get through the snow to take Woolams to a hospital.

Wreckage of Bell P-59A-1-BE Airacomet 44-22616. Jack Woolams bailed out of this airplane 5 January 1945. (Niagara Aerospace Museum)

Woolams was scheduled to make the first powered flight of the XS-1 during October 1946.

Jack Woolams was killed Friday, 30 August 1946, when his red Thompson Trophy racer, Cobra I, a modified 2,000-horsepower Bell P-39Q Airacobra, crashed into Lake Ontario at over 400 miles per hour. His body was recovered by the U.S. Coast Guard four days later.

Bell Aircraft Corporation experimental test pilots Jack Woolams and Tex Johnston with their modified Bell P-39Q Airacobras, Cobra I and Cobra II. (Niagara Aerospace Museum)

¹ This article was originally dated 19 January 1946. There were known discrepancies as to the date of the first flight from various reliable sources. Recently discovered test flight reports, provided to TDiA by Mr. Roy T. Lindberg, Historian of the Niagara Aerospace Museum, Niagara Falls, New York, have confirmed that the date of the first flight was actually 25 January 1946. The article has been been revised accordingly, as well as to incorporate new information from these reports.

TDiA is indebted to Mr. Lindberg for providing this and other documentation.

© 2019, Bryan R. Swopes

24 January 1975

Aérospatiale SA 365 C Dauphin 2, F-WVKE. (Vertical Flight Society)

24 January 1975: First flight Aérospatiale SA 365 C Dauphin 2 prototype, F-WVKE, s/n 004. This prototype was built from a single engine SA 360 C Dauphin.

The SA 365 C is a single main rotor/fenestron twin-engine medium helicopter. It is operated by a single pilot seated in the right seat, and can carry a maximum of 13 passengers. The four-bladed articulated main rotor has a diameter of 11.68 meters (38.31 feet) and turns clockwise as seen from above. (The advancing blade is on the left.) A 0.89 meter (2.95 feet), 13-bladed fenestron provides anti-torque and yaw control.¹ In 1977, a Star Flex rigid rotor hub replaced the articulated main rotor.

The fuselage is 10.98 meters (36.02 feet) long, 3.17 meters (10.40 feet) wide and 3.27 meters (10.72 feet) high. In the original configuration, the Dauphin 2 had fixed wheeled landing gear. The second prototype was used to experiment with retractable tricycle gear, which was adopted with the SA 365 N.

Aérospatiale SA 365 C Dauphin 2, F-WVKE. (Vertical Flight Society)

The SA 365 C was powered by two Turboméca Arriel 1A turboshaft engines. These had a maximum continuous power rating of 430 kW (577 h.p.) @ 50,764 r.p.m.; 466 kW (625 h.p.) for take off (5-minute limit) @ 52,007 r.p.m./or one engine inoperative (30-minute limit); and 486 kW (652 h.p.) @ 52,680 r.p.m., one engine inoperative,  2½-minute limit.

The main rotor turns 350 r.p.m. (+/- 10) in normal operation. The minimum transient speed to 285 r.p.m., is allowed in case of engine failure, and 320–420 r.p.m. during autorotation.

The helicopter’s maximum mass is 3,400 kilograms (7,496 pounds, maximum gross weight). Its maximum speed (VNE)  is 315 kilometers per hour (170 knots), and maximum operating altitude, 4,572 meters (15,000 feet). Fuel capacity is 640 liters (3 liters are unusable).

Fifty SA 365 C and C1 helicopters were built before being replaced by the SA 365 N Dauphin.

¹ The ducted fenestron is more effective than a conventional tail rotor, provides less drag in forward flight, and is safer when operating near the ground.

© 2022, Bryan R. Swopes

23 January 1909

The Blériot XI in flight, May 1909. (Library of Congress Prints and Photographs Division)
Louis Charles Joseph Blériot. (Library of Congress)
Louis Charles Joseph Blériot. (Library of Congress)

23 January 1909: The Blériot XI made its first flight at Issy-les-Moulineaux, near Paris, France. The airplane was flown by Louis Charles Joseph Blériot. It was designed by Raymond Saulnier and was a development of the earlier Blériot VIII.

Saulnier later founded Morane-Saulnier Aviation—Sociètè Anonyme des Aèroplanes Morane-Saulnier—with the Morane brothers, Léon and Robert.

The Blériot XI was a single-seat, single-engine monoplane. It was 26.24 feet (7.998 meters) long with a wingspan of 25.35 feet (7.727 meters) and overall height of 8 feet (2.438 meters). It had an empty weight of 507 pounds (229.9 kilograms).

Raymond Saulnier

(Sources give conflicting specifications for the Blériot XI, probably because they were often changed in an effort to improve the airplane. Dimensions given here are from the three-view drawings, below.)

In its original configuration, the airplane was powered by an air-cooled, 3.774 liter (230.273 cubic inches) R.E.P.  two-row, seven-cylinder fan engine (or “semi-radial”) which produced 30 horsepower at 1,500 r.p.m., driving a four-bladed paddle-type propeller. The R.E.P. engine weighed 54 kilograms (119 pounds). This engine was unreliable and was soon changed for an air-cooled 3.117 liter (190.226 cubic inch) Alessandro Anzani & Co., 60° three-cylinder “fan”-type radial engine (or W-3) and a highly-efficient Chauvière Intégrale two-bladed propeller. The Anzani engine produced 25 horsepower at 1,400 r.p.m.

Blériot Type XI, front view.
Blériot Type XI, side view.
Blériot Type XI, top view.

The Blériot XI had a maximum speed of 76 kilometers per hour (47 miles per hour) and its service ceiling was 1,000 meters (3,281 feet).

Just over six months from its first flight, on 25 July 1909, Louis Blériot flew his Blériot XI across the English Channel from Calais to Dover. He flew the 25 mile (40 kilometer) distance in 36 minutes. The airplane was slightly damaged on landing.

Blériot’s original airplane is in the collection of the Musee des Arts et Metiers, Paris, France.

The Blériot XI was a successful and influential design. It was widely used by both civilian and military aviators.

The original Blériot XI at Musee des Arts et Metiers (PHGCOM. Use authorized.)
The original Blériot XI at Musee des Arts et Metiers (PHGCOM. Use authorized.)

© 2019, Bryan R. Swopes

18 January 1906

Graf von Zeppelin's LZ 2 at Lake Constance, 1906. (RAF Museum)
Graf von Zeppelin’s LZ 2 at Lake Constance, 1906. (RAF Museum)

17 January 1906: Ferdinand Adolf Heinrich August Graf von Zeppelin’s second airship, Luftschiff Zeppelin 2, designed by Ludwig Dürr, made its first—and only—flight, at Lake Constance (Bodensee), a large lake at the base of Alps.

Ludwig Dürr (1878–1956)
Ludwig Dürr (1878–1956)

LZ 2 was 127 meters (416 feet, 8 inches) long and 11.70 meters (38 feet, 5 inches) in diameter. It had a volume of 10,400 cubic meters (367,273 cubic feet). The rigid structure was built of triangular-section girders that combined light weight and strength. Hydrogen gas contained in bags inside the airship’s envelope gave it buoyancy.

Ladislas d’Orcy described the airship:

. . . Hull-frame of aluminum-alloy lattice girders, cross-braced by wire stays, and subdivided into compartments for independent gas-cells. No ballonets. Fabric skin. Trim controlled by lifting planes. Cars rigidly connected. Gangway affording passage between the cars.

D’Orcy’s Airship Manual, by Ladislas d’Orcy, M.S.A.E., The Century Company, New York, 1917, at Page 127

The airship was powered by two 85 horsepower Daimler-Motoren-Gesellchaft gasoline-fueled engines designed by Karl Maybach. They turned four three-bladed propellers at 820 r.p.m. It was capable of reaching 40 kilometers per hour (25 miles per hour). The airship’s ceiling was 2,800 feet (853 meters).

L’AÉROPHILE reported:

Une nouvelle sortie—la derniére—eut lieu le jeudi 18 janvier 1906. Parti de son garage et parvenu à 500 mètres environ, le ballon était désemparé, et après avoir passé au-dessus de Raverasburg, Kisslegg et Sommerstadt, venait s’abattre en territoire suisse, à Allgaen. Certains correspondants assurent qu’il était monte par l’inventeur, , des officiers allemands et des hommes d’équipage qui n’eurent pas de mal. Mais, dans la chute, das avaries irréparables se produisirent si bien que le comte Zeppelin, decouragé, ne continuera pas ses essais. #000000;">¹

L’AÉROPHILE, 14º Année, Noº 1, Janvier 1906, at Page 32




(Copyright, 1906, by N. Y. Herald Company.)

     Berlin, January 18.—Count Zeppelin made a second trial to-day with hi snew airship. Starting from Lake Constance, the airship passed over Ravensberg, Kisslegg and Sommersledat and landed at Allgaen. It was seriously damaged in the storm, and further trials will be impossible at present.

THE CINCINNATI ENQUIRER, Vo. LXIII, No. 10, Friday, 19 January 1906, Page 2. Column 1

An engine failure forced the ship to make an emergency landing close to a small town named Sommersried, Allgäu, in southern Germany, and was so badly damaged by a storm during the night that it had to be scrapped.

Wreckage of LZ 2.
Wreckage of LZ 2.

¹ Google Translation: “A new exit-the last-took place on Thursday, January 18, 1906. From his garage and reached about 500 meters, the balloon was clueless/distraught, and after passing over Raverasburg, Kisslegg and Sommerstadt, came crashing down in Swiss territory, in Allgaen. Some correspondents assert that he was mounted by the inventor, German officers and crewmen who were not hurt. But in the fall, irreparable damage occurred so that Count Zeppelin, discouraged, did not continue his attempts.”

© 2019, Bryan R. Swopes