Lockheed

Loughead Aircraft Manufacturing Company
Lockheed Aircraft Company

Of the Loughead three brothers Victor (the oldest), Allan and Malcolm, Allan started as a mechanic for a local aviation enthusiast who owned a Curtiss pusher, and he soon became a barnstormer and flight in-structor.
Allan and Malcolm Loughead built their first aircraft, the Model G seaplane, in 1913.
With Malcolm, he formed the Loughead Aircraft Manufacturing Company at Santa Barbara, California, in 1916,
With the help of designer Jack Northrop, Lockheed built the F1 twin-engined flying-boat in 1918, but it was turned down by the Navy. In 1923 Northrop left to take a job with Donald Douglas, and later founded his own corporation.

Loughead Aircraft Manufacturing Company survived until the end of World War 1, when thousands of surplus aircraft and engines flooded the market. Malcolm left to join the automobile industry. The original Lockheed Com¬pany built the moulded-plywood S-1 sports plane. It could not compete with cheap war-surplus aircraft, and the company suspended manufac¬ture in 1920 and was liquidated in 1921.

In 1926, Allan refounded the Lockheed Aircraft Company of Hollywood, and with a young designer, John K. Northrop, soon turned out a radical all wood, monocoque, cantilever monoplane the Lockheed Vega from 1925, a fast two-seater intended for airline work. 141 were built between 1925 and 1932.

Company moved to Burbank 1928. Vega gave rise to low-wing series of transports, the Altair/Orion/Sirius, differing in seating arrangements. Many records and notable flights performed on these aircraft.

In 1929, Lockheed came under the control of the Detroit Aircraft Corpora¬tion, then came the Depression. After the Great Crash Detroit Aircraft Corporation went bankrupt in 1931 and with it, Lockheed. The company went into receivership and, in partnership with Carl Squier a Lloyd Stear¬man, Robert Gross bought the assets in 1932 for $40,000.

Lockheed brothers had left the company, formed Lockheed Brothers Aircraft Corporation Company purchased by Robert E. Cross and Lloyd Stearman for a consortium, resumed trading under old name.

Launched a new series of twin-engined transports, starting with the Lockheed 10A Electra. To¬gether with Stearman and a young de¬signer, Hall Hibbard, Gross supervised development of the Lockheed 10 the original Electra. If the project failed, the company would surely collapse. Midway through the development, wind tunnel tests revealed that the plane had insufficient rudder control. Working in a wind tunnel at the University of Michigan, a young graduate student modified the design and added a twin tail. It solved the problem, and Gross, recognizing talent, immediately hired the student. His name was Clarence “Kelly” Johnson.
In 1934, the Lockheed 10 Electra flew.

In 1937 the L-14 Super Electra appeared, a smaller executive version of the L-10A. RAF bought 250 bomber variants of 14, called Hudson, in 1938. L-18 Lodestar flew 1939, a lengthened and more powerful Model 14.
The Lockheed P-38 Lightning of 1939, introduced as a high-altitude interceptor, had worldwide use, mainly as ground-attack and fighter-bomber aircraft.

In 1939 TWA formulated a requirement for a long-range transport and C. L. Johnson designed the 558km/h Constellation, which first flew in 1943. First 22 requisitioned as military transports. Built up to 1958 in increasingly powerful, larger-capacity and longer-range versions.

Ventura of 1941 was a bomber variant of Model 18. Naval PV-1 came in 1942 and the torpedo-carrying PV-2 Harpoon in 1943. Success of the Harpoon led to long-range Neptune, main equipment of patrol squadrons 1947-1962.

Lockheed was employing 94,000 people by June 1943, but by the end of 1944 were down to 60,000, and by the summer of 1945 they were down to 35,000 – fewer than 1939.

By April 1948 their employment was down to 13,800.

First flight August 1954 of C-130 Hercules tactical military turboprop transport, later also produced in commercial form; delivered from 1956 and remaining in production in 1999 in latest C-130J form with fully integrated digital avionics, advanced engines and propellers, and other improvements (well over 2,200 Hercules transports built).

Company also produced the four-turboprop Electra airliner (first flown December 1957) and derived P-3 Orion long-range maritime patrol/reconnaissance aircraft (first flown August 1958, and remaining in production in the U.S.A. until 1995, although Japanese Kawasaki-built examples continued in production).

Around 1960 Fokker was looking for and American partner. Lockheed turned down the proposal because they thought it could not be profitable, but Northrop agreed to by a twenty-one percent share.

C-130 followed by much larger strategic C-141 StarLifter transport (first flown December 1963) and C-5A Galaxy (first flown June 1968) which, at 348,810kg gross weight and with a span of 67.88m, was then the world’s largest operational aircraft; C-5B followed for USAF and two C-5As modified to carry outsized space cargoes as C-5Cs.

First U.S. jet fighter was Lockheed P-80 Shooting Star (first flown January 1944) which later saw service in Korea. F-104 of 1954 was smallest-span-ever American service aircraft (wings spanned 6.7m) and first fighter capable of sustained Mach 2.0. Saw widespread service as part of U.S. offshore arms and aid deals. Subsequent activities included CP-140 Aurora for Canada as a development of the Orion ;S-3 Viking carrier-borne anti-submarine aircraft (first flown January 1972 and later also used by the U.S. Navy in ES-3A electronic reconnaissance and signals/ communications intelligence, and US-3A carrier onboard delivery variants); and L-1011 TriStar widebodied airliner (first flown November 1970).

A secret “Skunk Works” at Palmdale, California, was responsible for the military U-2 Dragon Lady spyplane (first flown August 1955), A-12 Mach 3.6 strategic reconnaissance aircraft sponsored by the CIA (first flown April 1962) and developed into the YF-12 interceptor and fully operational SR-71A Mach 3+ strategic reconnaissance aircraft for the USAF, and the F-117A stealth fighter for subsonic night attack on priority targets (first flown June 1981), among other types.

In September 1977 Lockheed Aircraft Corporation took new name Lockheed Corporation.
The Tactical Military Aircraft division of General Dynamics bought by Lockheed Corporation in March 1993, becoming Lockheed Fort Worth Company. In March 1995 Lockheed Corporation merged with Martin Marietta to form Lockheed Martin Corporation. Intended merger with Northrop Grumman, announced in July 1997, did not take place. Company set-up then included Lockheed Martin Tactical Aircraft Systems in charge of F-16 production and updates and part of the F-22 program; Lockheed Martin Aeronautical Systems tasked with F-22, military transport and maritime patrol aircraft work, plus production and support of C-130 and P-3; and Lockheed Martin Skunk Works which undertakes advanced, secret and innovative design/development, work including support and improvement of F-117A, U-2 / TR-1, X-33 reusable launch vehicle and more. There are many other divisions.

1990 Lockheed Martin programs include continued production of the F-16 fighter and C-130 transport, development and production of the F-22 Raptor air dominance fighter (first flown September 1990, with first flight of an engineering and manufacturing development aircraft September 1997, and deliveries of full production to start to USAF in 2002 to allow initial operational capability in 2005); and development in association with Northrop Grumman and BAe of Joint Strike Fighter for U.S. forces.

Lippisch Wien

To remain competitive with the latest designs coming from the German universities, Robert Kronfield asked Alexander Lippisch, the Professor’s designer, for an improved version with better performance and handling. Lippisch’s response was an elegant sailplane that Kronfeld named Wien after his home town. The Wien kept the layout of the Professor, with pylon-mounted single-spar wings braced with faired struts, but the span was increased by 3.0 m (9 ft 10 in), raising the aspect ratio from 14 to 19.6. The fuselage was redesigned to have a smooth ovoid section, finer aft than on the Professor and fitted with a more aerodynamically refined fin and rudder.

Both designs used a plywood-covered D-box forward of the spar, with fabric covering behind, and their 2.50 m (8 ft 2 in) half span, parallel chord inner wing panels were similar, though close to the fuselage the Wien’s wing was strengthened with full chord plywood skin. The V-form bracing struts linked the extremes of these panels to the lower fuselage. The extra span of the Wien was in the double straight-tapered outer panels, which continued out to finer, rounded tips. Ailerons occupied the whole trailing edge of these sections.

The Wien’s open cockpit was ahead of the wing leading edge. There was no windscreen, and the instruments, including the still novel variometer, were displayed horizontally, inset into the fuselage immediately in front of the pilot. The undercarriage consisted of a single enclosed skid and a small spring tailskid. The rear fixed surfaces, ply covered, were very narrow, though the root of the fin was carefully faired into the fuselage. The tapered control surfaces were fabric covered.

The Wien was capable of utilizing both ridge lift and thermals. Kronfield used both methods in a series of ground breaking and often record setting flights between 1929 and 1931, learning much about thermal flying. On 15 May 1929 he made the first glider flight of more than 100 km (62 mi), largely ridge flying but with some thermal soaring. This was followed by at least three world distance records, the last between the Wasserkuppe and Marktredwitz, a distance of 164 km (102 mi) flown on 24 August 1930. Some very significant though not record breaking flights of about 160 km (100 mi) were made in August 1931 which used thermals alone and showed that on some days the distance that had to be flown between thermals was short. This was new information which, as it became widely known, opened up the potential of cross-country soaring.

Kronfeld also set two glider altitude records, the second flown on 30 July 1929 in thunderous conditions to a height of 2,560 m (8,399 ft).[2] At the invitation of the British Gliding Association he and the Wien made a series of demonstration flights on a tour of England in the Summer of 1931. During it he flew over London along the Thames and also won a £1,000 prize donated by the Daily Mail for a cross Channel flight. The North -South crossing, followed by a return flight, was made in July 1931; these did not use thermals but were direct glides from about 3000 m (9,840 ft) after an aero-tow.

Wingspan: 19.10 m (62 ft 8 in)
Wing area: 18.6 m2 (200 sq ft)
Aspect ratio: 19.6
Airfoil: Root, Göttingen 549 modified with thickened nose and increased camber
Length: 7.95 m (26 ft 1 in)
Empty weight: 158 kg (348 lb)
Gross weight: 248 kg (547 lb)
Wing loading: 13.8 kg/m2 (2.8 lb/sq ft)
Crew: One

Lippisch 272 Fafnir

Günther Groenhoff demonstrated his skill and courage while conducting research for a Munich meteorology conference in May 1931. On a mission to gather weather data, he installed various instruments on his Alexander Lippisch built “Fafnir” model 272 glider and was towed to altitude by a powered aircraft piloted by pilot Peter Reidel. As they approached towering cumulus clouds over Munich, Groenhoff’s Fafnir was released to his fate. For the next eight hours, he was bounced and buffeted around the thunderstorm amid lightning flashes, hail and torrential rain, all the while collecting valuable information on weather conditions. Many times he flew in the blind. His journal indicates that he experienced one rapid descent in zero visibility to emerge from the cloud to see the ground only a few hundred feet below. He managed to bank and return to the front side of the thundercloud. He wrote, “as soon as the storm reached me, some powerful force pulled the plane straight up into the center of the clouds. It seemed to me as if I were riding an express elevator of a high skyscraper.”
After soaring with the storm for eight hours, he had traveled 240 miles and finally landed on a riverbed, coming to rest a few meters short of an electric line near Kaaden, Czechoslovakia. Groenhoff wrote that he was gratified that he was able to bring home “the rich material for meteorological research.”
Back at Wasserkuppe on July 23, 1932, Groenhoff once again soared into the strong, turbulent winds of a thunderstorm. However, his good fortune had run out. The rudder of his Fafnir snapped and he crashed on the west slope, dying instantly. He was 23 years old.

Lippisch Delta 1

By 1931 Alexander Lippisch had progressed to a triangular wing form which he called ‘delta’, and his Delta 1 was ready for demonstration to top German aviation ministry officials at Berlin’s Templehof airport. The test pilot, Gunther Gronhoff, performed a low level aerobatic routine (even spinning the 30 hp Bristol Cherub powered delta), they remained unconvinced. Lippisch would not get an airworthiness certificate, they declared, until he put tails on his aircraft.

Lippisch 1929 Glider

Alexander Lippisch in 1929 built a flapping wing glider on which the wing movement was operated by the pilot’s legs in the manner of one of those rowing machine. Lippisch’s aircraft was launched by a rubber bungee, and was therefore man assisted rather than man-powered, but it did manage flights up to 275 m (300 yards).

Lippisch Zögling / Pander PH-1

The 1926 Zögling was a simple lightweight glider for basic flight instruction. It was designed to start with rubber ropes, a common way to start a glider in the years short after WWI. It was designed by Alexander Lippisch.

On 27 December 1929 the Dutch Gliding Club was founded. For a few guilders, Theo E. Slot, an aircraft designer at the Pander Aircraft Factory, bought the construction rights to the Zogling glider and on 21 January 1930, the construction of this machine began. By April the PH-1 was completed and flew for the first time in Holland on 6 April, piloted by J. E. van Tijen. A record flight of 43 min 25 sec was made on 4 October with van Tijen at the controls.

Pander PH-1

Zögling
1926
Length : 17.356 ft / 5.29 m
Height : 6.594 ft / 2.01 m
Wingspan : 32.94 ft / 10.04 m
Crew : 1

Zögling 33
1933
Length : 17.356 ft / 5.29 m
Height : 6.988 ft / 2.13 m
Wingspan : 32.94 ft / 10.04 m
Crew : 1

Zögling 35
1935
Length : 17.356 ft / 5.29 m
Height : 7.612 ft / 2.32 m
Wingspan : 32.94 ft / 10.04 m
Crew : 1