17 February 1956: Test pilot Herman Richard (“Fish”) Salmon made the first flight of the Lockheed YF-104A service test prototype, Air Force serial number 55-2955 (Lockheed serial number 183-1001). This airplane, the first of seventeen pre-production YF-104As, incorporated many improvements over the XF-104 prototype, the most visible being a longer fuselage.
On 28 February 1956, YF-104A 55-2955 became the first aircraft to reach Mach 2 in level flight.
The YF-104A was later converted to the production standard and redesignated F-104A.
The Lockheed F-104A Starfighter is a single-place, single-engine, Mach 2 interceptor. It was designed by a team lead by the legendary Clarence L. “Kelly” Johnson. The F-104A is 54.77 feet (16.694 meters) long with a wingspan of 21.94 feet (6.687 meters) and overall height of 13.49 feet (4.112 meters). The total wing area is just 196.1 square feet (18.2 square meters). At 25% chord, the wings are swept aft 18° 6′. They have 0° angle of incidence and no twist. The airplane has a very pronounced -10° anhedral. An all-flying stabilator is placed at the top of the airplane’s vertical fin, creating a “T-tail” configuration.
The F-104A had an empty weight of 13,184 pounds (5,980.2 kilograms). The airplane’s gross weight varied from 19,600 pounds to 25,300 pounds, depending on the load of missiles and/or external fuel tanks.
Internal fuel capacity was 896 gallons (3,392 liters). With Sidewinder missiles, the F-104A could carry two external fuel tanks on underwing pylons, for an additional 400 gallons (1,514 liters). If no missiles were carried, two more tanks could be attached to the wing tips, adding another 330 gallons (1,249 liters) of fuel.
The F-104A was powered by a single General Electric J79-GE-3B, -11A or -19 engine. The J79 is a single-spool, axial-flow, afterburning turbojet, which used a 17-stage compressor and 3-stage turbine. The J79GE-3B has a continuous power rating of 8,950 pounds of thrust (39.81 kilonewtons) at 7,460 r.p.m. Its Military Power rating is 9,600 pounds (42.70 kilonewtons) (30-minute limit), and 15,000 pounds (66.72 kilonewtons) with afterburner (5-minute limit). The engine is 17 feet, 3.2 inches (5.263 meters) long, 2 feet, 8.6 inches (0.828 meters) in diameter, and weighs 3,225 pounds (1,463 kilograms).
The F-104A had a maximum speed of 1,150 knots (1,323 miles per hour/2,130 kilometers per hour) at 35,000 feet (10,668 meters). The Starfighter’s initial rate of climb was 60,395 feet per minute (306.8 meters per second) and its service ceiling was 59,600 feet (18,166 meters).
Armament was one General Electric M61 Vulcan six-barreled revolving cannon with 725 rounds of 20 mm ammunition, firing at a rate of 4,000 rounds per minute. An AIM-9B Sidewinder infrared-homing air-to-air missile could be carried on each wing tip.
Lockheed built 153 of the F-104A Starfighter initial production version. A total of 2,578 F-104s of all variants were produced by Lockheed and its licensees, Canadair, Fiat, Fokker, MBB, Messerschmitt, Mitsubishi and SABCA. By 1969, the F-104A had been retired from service. The last Starfighter, an Aeritalia-built F-104S ASA/M of the Aeronautica Militare Italiana, was retired in October 2004.
While conducting flame-out tests in 55-2955, 25 April 1957, Lockheed engineering test pilot John A. (“Jack”) Simpson, Jr., made a hard landing at Air Force Plant 42, Palmdale, California, about 22 miles (35 kilometers) southwest of Edwards Air Force Base. After a bounce, the landing gear collapsed, and the Starfighter skidded off the runway. 55-2955, nick-named Apple Knocker, was damaged beyond repair. “Suitcase” Simpson was not hurt.
3 February 1946: Transcontinental and Western Airlines (“The Trans World Airline”) inaugurated non-stop passenger service from Los Angeles to New York with it’s Lockheed L-049A Constellation, Navajo Skychief, NC86503.
Captain William John (“Jack”) Frye, president of the airline, and his co-pilot, Captain Lee Flanagin, T&WA’s Western Region Operations Manager, were at the controls with Captain Paul S. Frederickson and Captain A.O. Lundin aboard as relief pilots. Flight Engineers Paul Henry and E.T. Greene completed the flight crew. In the passenger cabin were flight attendants Dorraine Strole and Rita P. Crooks. The 44 passengers were primarily news reporters.
Navajo Skychief departed Lockheed Air Terminal, Burbank, California, at 12:59:12 a.m., Pacific Standard Time, and flew across the North American continet at an altitude of 15,000–17,000 feet (4,572–5,182 meters), taking advantage of tailwinds throughout the flight. The Constellation crossed over LaGuardia Airport, New York, at 1,500 feet (457.2 meters) at 11:27 a.m., Eastern Standard Time.
The 2,474-mile (3,954.2 kilometer) Great Circle flight took 7 hours, 27 minutes, 48 seconds, averaging 329 miles per hour (529.5 kilometers per hour), setting a National Aeronautic Association transcontinental speed record for transport aircraft.
With 52 persons aboard, this was the largest number carried in commercial passenger service up to that time.
The four Duplex-Cyclone engines burned 450 gallons (1,703.4 liters) of gasoline per hour. On landing, 610 gallons (2,309.1 liters) of fuel remained.
Navajo Skychief (serial number 2024), a Lockheed Model L-049-46 Constellation, had been built at Lockheed Aircraft Corporation’s Burbank, California, plant and delivered to Transcontinental and Western on 20 December 1945. The airliner remained in service with TWA until March 1962. During that time it was also named Star of the Nile and Star of California. The Constellation was scrapped in May 1964.
The Lockheed Constellation first flew in 1942, and was produced for the U.S. Army Air Corps as the C-69. With the end of World War II, commercial airlines needed new airliners for the post-war boom. The Constellation had transoceanic range and a pressurized cabin for passenger comfort.
The Lockheed L-049 Constellation was operated by a flight crew of four and could carry up to 81 passengers. The airplane was 95 feet, 1 3⁄16 inches (28.986 meters) long with a wingspan of 123 feet, 0 inches (37.490 meters), and overall height of 23 feet, 7⅞ inches (7.210 meters). It had an empty weight of 49,392 pounds (22,403.8 kilograms) and maximum takeoff weight of 86,250 pounds (39,122.3 kilograms).
The L-049 was powered by four air-cooled, supercharged and fuel-injected, 3,347.662-cubic-inch-displacement (54.858 liter) Wright Aeronautical Division Cyclone 18 ¹ 745C18BA3 two-row 18-cylinder radial engines with a compression ratio of 6.5:1. The -BA3 was rated at 2,000 horsepower at 2,400 r.p.m., or 2,200 horsepower at 2,800 r.p.m., for takeoff, (five minute limit). The engines drove 15 foot, 2 inch (4.623 meter) diameter, three-bladed Hamilton Standard Hydromatic constant-speed propellers through a 0.4375:1 gear reduction. The 745C18BA3 was 6 feet, 4.13 inches (1.934 meters) long, 4 feet, 7.78 inches (1.417 meters) in diameter and weighed 2,842 pounds (1,289.11 kilograms).
The L-049 had a cruise speed of 313 miles per hour (503.72 kilometers per hour) and a range of 3,995 miles (6,429.3 kilometers). Its service ceiling was 25,300 feet (7,711 meters).
22 C-69s and 856 Constellations of all types were built. Designed by the famous Kelly Johnson, the Lockheed Constellation was in production from 1943–1958 in both civilian airliner and military transport versions. It is the classic propeller-driven transcontinental and transoceanic airliner.
Jack Frye had founded the Aero Corporation of California, which would later become Transcontinental and Western, on 3 February 1926. He died at Tucson, Arizona, on 3 February 1959 at the age of 55 years.
¹ The Cyclone 18 series was also known as the Duplex Cyclone.
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.
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.
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).
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.
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.
26 January 1946: Colonel William Haldane Councill, U.S. Army Air Forces, a test pilot at the Flight Test Division, Wright Field, Ohio, made a record-breaking flight from Daugherty Field (Long Beach Airport), California, to overhead LaGuardia Airport, New York, in 4 hours, 13 minutes, 26 seconds. He was piloting a Lockheed P-80A-1-LO Shooting Star, serial number 44-85123. Colonel Councill flew as high as 41,000 feet (12,497 meters), but stayed at 35,000 feet (10,668 meters) for most of the flight. This flight set a new transcontinental speed record for the 2,457 miles (3,954 kilometers), averaging 584.82 miles per hour (941.18 kilometers per hour).
The National Aeronautic Association representative, John P. V. Heinmuller, was the official timer. (Mr. Heinmuller was the Chief Timer of both the N.A.A. and the Fédération Aéronautique Internationale. He was president of the Longines-Wittnauer Watch Co., inc. He had also timed Lindbergh’s transatlantic flight in 1927. Mr. Heinmuller was the author of Man’s Fight to Fly: Famous World-Record Flights and a Chronology of Aviation, 1944).
Colonel Councill was accompanied by two other P-80s flown by Captain John S. Babel and Captain Martin I. Smith. This was the longest non-stop flight by a jet aircraft up to that time.
Colonel Councill’s P-80A had been modified with the installation of a 100-gallon (379 liters) fuel tank in the nose in place of the standard armament of six machine guns. Along with 300-gallon (1,135 liters) wing tip tanks, the Shooting Star’s maximum fuel load had been increased to 1,165 gallons (4,410 liters).¹
The P-80s flown by Captains Babel and Smith also had the nose fuel tank installed, but carried 150-gallon (569 liters) wing tip tanks. They had to stop at Topeka, Kansas, to refuel. Ground crews met them with four fuel trucks, and they were airborne in 4 minutes and 6 minutes, respectively.
William Haldane Councill was born 5 October 1911 at Bellevue, Pennsylvania. He was the second of four children of William Mansfield Councill, a manager for a fireproofing company, and Bertha Etta Wing Councill. He attended Perry High School, where he was a member of the Aero Club.
Bill Councill studied at the Carnegie Institute of Technology, Pittsburgh, Pennsylvania. He was a member of the Reserve Officers Training Corps (R.O.T.C.), and the Delta Upsilon (ΔΥ) fraternity. He was also a member of the Scabbard and Blade, and co-chairman of the Military Ball. Councill graduated in 1933 with the degree of Bachelor of Science in Mechanical Engineering (B.S.M.E.).
William H. Councill was commissioned as a second lieutenant, Engineer Reserve, 1 June 1933. He was appointed a flying cadet and trained as a pilot, 1 October 1933 to 14 October 1935. He then received a commission as a second lieutenant, Air Reserve.
Lieutenant Councill married Miss Lillie Louise Slay at Wahiawa Heights, Honolulu, Territory of Hawaii, 18 April 1936. They would have one daughter, Frances, born in 1943.
On 1 October 1938, Councill’s reserve commission was converted to second lieutenant, Air Corps, United States Army. Councill was promoted to first lieutenant, 1 October 1941.
During this time William Councill held a parallel commission in the Army of the United States. He was promoted to first lieutenant, A.U.S., 9 September 1940, and captain, A.U.S., 1 February 1942. On 1 March 1942, he was promoted to the rank of major, A.U.S. (A.C.), and to lieutenant colonel, 19 December 1942. On 3 July 1945, Councill advanced to the rank of colonel, A.U.S.
Colonel Councill was rated as a command pilot. During World War II, he flew 130 combat missions with the the Lockheed P-38 Lightning .Thirteenth Air Force in the southwest Pacific area. He is credited with shooting down three enemy aircraft, and was awarded the Distinguished Flying Cross for his actions in an air battle over the Solomons, 15 January 1943.
At 10:54 a.m., 5 April 1954, Colonel Councill took off from the Republic Aviation Company plant at Farmingdale, New York, in a Lockheed T-33A Shooting Star, en route to Langley Field, Virginia. He never arrived. An extensive search, other than locating a single wing tank, was unsuccessful. It was presumed that Councill went down in the Atlantic Ocean.
According to his commanding officer, Major General Earl W. Barnes,
“. . . He was a most capable, dependable and responsible officer who was conscientiously devoted to his tasks. His opinions on military matters were highly regarded by his superior officers. His pleasant personality, genial manner, and dry wit endeared him to the hearts of the many friends he had won during approximately twenty-one years of service in the United States Air Force. He was greatly beloved by those with whom he associated. . . I feel that our Country and the Air Force have lost an irreplaceable asset and a great leader.”
—Wing Family Annals, Wing Family of America, Inc., Des Moines, Iowa. Vol. 54, No. 1, at Pages 7 and 8
The Lockheed P-80-1-LO was the United States’ first operational jet fighter. It was a single-seat, single engine airplane, designed by a team of engineers led by Clarence L. (“Kelly”) Johnson. The prototype XP-80A, 44-83020, nicknamed Lulu-Belle, was first flown by test pilot Tony LeVier at Muroc Army Air Field (now known as Edwards Air Force Base) 8 January 1944.
The P-80A was a day fighter, and was not equipped for night or all-weather combat operations. The P-80A was 34 feet, 6 inches (10.516 meters) long with a wingspan of 38 feet, 10.5037 inches (11.84919 meters) ² and overall height of 11 feet, 4 inches (3.454 meters).
The leading edges of the P-80A’s wings were swept aft 9° 18′ 33″. They had an angle of incidence of +1° at the root and -1° 30′ twist. There was 3° 50′ dihedral. The total wing area was 237.70 square feet (22.083 square meters).
The fighter had an empty weight of 7,920 pounds (3,592 kilograms) and a gross weight of 11,700 pounds (5,307 kilograms). The maximum takeoff weight was 14,000 pounds (6,350 kilograms).
Early production P-80As were powered by either an Allison J33-A-9 or a General Electric J33-GE-11 turbojet engine. The J33 was a licensed version of the Rolls-Royce Derwent. It was a single-shaft turbojet with a 1-stage centrifugal compressor section and a 1-stage axial-flow turbine. The -9 and -11 engines were rated at 3,825 pounds of thrust (17.014 kilonewtons). The J33s were 8 feet, 6.9 inches (2.614 meters) long, 4 feet, 2.5 inches (1.283 meters) in diameter and weighed 1,775 pounds (805 kilograms).
The P-80A had a cruising speed of 445 miles per hour (716 kilometers per hour) at 20,000 feet (6,096 meters). Its maximum speed was 548 miles per hour (882 kilometers per hour) at 2,700 feet (823 meters) and and 501 miles per hour (806 kilometers per hour) at 34,700 feet (10,577 meters). The service ceiling was 45,000 feet (13,716 meters).
The P-80A Shooting Star was armed with six air-cooled Browning AN-M2 .50-caliber aircraft machine guns mounted in the nose.
Several hundred of the early production P-80 Shooting stars had all of their surface seams filled, and the airplanes were primed and painted. Although this process added 60 pounds (27.2 kilograms) to the empty weight, the decrease in drag allowed a 10 mile per hour (16 kilometers per hour) increase in top speed. The painted surface was difficult to maintain in the field and the process was discontinued.
On 3 June 1946, Lockheed P-80A-1-LO Shooting Star 44-85123, flown by Lieutenant Henry A. Johnson, set a Fédération Aéronautique Internationale (FAI) World Record for Speed Over a Closed Circuit of 1,000 Kilometers with an average speed of 745.08 kilometers per hour (462.97 miles per hour).³
On 2 September 1946, Major Gustav Lindquist won the Thompson Trophy Race, J Division, at the National Air Races, Cleveland, Ohio, 1946, with the same airplane, averaging 515.853 miles per hour (830.185 kilometers per hour) over a 180-kilometer (111.85-mile) course.
Today, 44-85123 is in the collection of the Air Force Flight Test Museum, Edwards Air Force Base.
¹ Thanks to Jeffrey P. Rhodes ofLockheed Martin for additional information on Colonel Councill’s Lockheed P-80A Shooting Star.
² Wing span with rounded wing tips. P-80As with squared (“clipped”) tips had a wing span of 37 feet, 7.5037 inches (11.46819 meters).
9 January 1943: At the insistence of the United States Army Air Forces, Boeing’s Chief Test Pilot, Eddie Allen, made the first flight of the Lockheed L-049 Constellation prototype, NX25600, from Lockheed Air Terminal at Burbank, California, to Muroc Army Airfield (today known as Edwards Air Force Base). Lockheed’s Chief Test Pilot, Milo G. Burcham, was the co-pilot.
When the flight ended after 58 minutes, Allen said, “This machine works so well that you don’t need me anymore!” With that, Allen returned to Seattle.
The Los Angeles Times reported:
SUPER TRANSPORT PLANE IN DEBUT
Lockheed’s Air Marvel Makes First Flight; Believed to Be World’s Largest and Fastest; Built Like Fighter, Can Outspeed Jap Zero
BY MARVIN MILES
Into the winter sky yesterday swept a brilliant new star—Lockheed super-transport Constellation.
First of a galaxy to come, the four-engine colossus sped down the long east-west runway at Lockheed Air Terminal, skipped nimbly off the concrete and boomed upward with the surging roar of 8000 unleashed horses.
A few breath-taking seconds’ full throttle had written a matter-of-fact climax to two years of secret development that evolved a 60-passenger transport faster than a Jap Zero fighter.
There were no fanfares, no speeches—simply an unvarnished war production takeoff, emphasizing as nothing else could the grim driving need for huge work planes to carry the battle swiftly to the ends of the earth.
Yet it was the first significant aviation event of 1943.
Built along the slim, graceful lines of a fighter the craft is faster than any four-engine bomber now in service. It can cross the continent in less than 9 hours,fly to Honolulu in 12. Even at half power its cruising speed is approximately 100 miles per hour faster than that of a standard airliner!
Within its supercharged cabin, air-density will remain at the 8000-foot level when the Constellation is cruising at “over-the-weather” altitudes up to 35,000 feet. So great is its power that the monster can maintain 25,000 feet on three engines, 16,500 on two.
As for economy of operation, the new sky queen can fly her full load hour after hour using but one gallon of gasoline per mile.
ONE TAXI TEST
At the controls when the super-transport lifted its tricycle gear in flight were Eddie Allen, Army pilot and veteran four-engine flyer, and Milo Burcham, Lockheed test pilot noted for his substratosphere testing of the P-38. Also in the ship were C.L. (Kelly) Johnson, chief research engineer for the aircraft company; Rudy Thoren, Johnson’s assistant, and Dick Stanton, chief mechanic.
There was but one taxi test yesterday, highlighted by a brief blaze in one of the four engines following a backfire as the ship turned to roll back to the head of the runway.
The fire was doused quickly and the Constellation stood ready for her maiden flight, he nose into a gentle breeze, the focal point of hundreds of eyes of workers, Army guards and officials watched expectantly.
Each engine “revved up”in turn, sending deep-throated echoes over the sun-drenched terminal.
Then the four black propellers whirled as one.
The Constellation shot forward, the wind in her teeth, a hurtling, bellowing land monster—until her propellers plucked her from the earth in an incredibly short span of runway and sent her thundering triumphantly toward the sun.
GLIDES BACK EASILY
In a moment she had almost vanished, only to bank in a wide turn and drone back over the terminal twice before leading her covey of lesser following craft off toward the desert to the Army airport at Muroc Dry Lake where she landed gracefully an hour later.
Shortly before dusk the giant craft returned to the Burbank terminal, slipped down the long “landing groove” of air and settled easily to the runway.
Her debut was over.
Today she will begin the exhaustive test flights to determine her performance before she is turned over to T.W.A. and the Army for the grueling business of war. . . .
—Los Angeles Times, Vol. LXII, Sunday morning, 10 January 1943, Page 1, Columns 1 and 2; Page 2, Columns 2 and 3. The article continues in Column 4. (The photographs are not a part of the original article.)
The Lockheed Model 49-46-10, company serial number 049-1961, was designated XC-69 by the U.S. Army Air Forces and assigned serial number 43-10309.
The Constellation was operated by a flight crew of four: two pilots, a navigator and a flight engineer. It could carry up to 81 passengers. The airplane was 95 feet, 1 3⁄16 inches (28.986 meters) long with a wingspan of 123 feet, 0 inches (37.490 meters), and overall height of 23 feet, 7⅞ inches (7.210 meters). It had an empty weight of 49,392 pounds (22,403.8 kilograms) and maximum takeoff weight of 86,250 pounds (39,122.3 kilograms).
The prototype was powered by four 3,347.662-cubic-inch-displacement (54.858 liter) air-cooled, supercharged, fuel-injected, Wright Aeronautical Division Cyclone 18 745C18BA3 (also referred to as the Duplex Cyclone), a two-row, 18-cylinder radial engine with a compression ratio of 6.5:1. They were rated at 2,000 horsepower at 2,400 r.p.m., or 2,200 horsepower at 2,800 r.p.m. for takeoff, (five minute limit) burning 100/130 aviation gasoline, and drove 15 foot, 2 inch (4.623 meter) diameter, three-bladed Hamilton Standard Hydromatic 43E60 constant-speed propellers through a 0.4375:1 gear reduction. The 745C18BA3 was 6 feet, 4.13 inches (1.934 meters) long, 4 feet, 7.78 inches (1.417 meters) in diameter and weighed 2,842 pounds (1,289 kilograms). 41 of these engines were built by Wright.
The L-049 had a cruise speed of 313 miles per hour (504 kilometers per hour) and a range of 3,995 miles (6,429 kilometers). Its service ceiling was 25,300 feet (7,711 meters).
The prototype XC-69 was later re-engined with Pratt & Whitney Double Wasp 2SC14-G (R-2800-83) engines and designated XC-69E. These had a Normal rating of 1,700 horsepower at 2,600 r.p.m., to 7,300 feet (2,225 meters), 1,500 horsepower at 17,500 feet (5,334 meters), and 2,100 horsepower at 2,800 r.p.m. for Takeoff.
After the war, the Constellation prototype was sold to Howard Hughes’ Hughes Aircraft Company for $20,000 and registered as NX67900. In May 1950, Lockheed bought the prototype back from Hughes for $100,000 and it was again registered as NC25600. It had accumulated just 404 flight hours up to this time.