Tag Archives: First Flight

14 January 1942

Les Morris at the controls of the Vought-Sikorsky VS-316A (XR-4, serial number 41-18874) on its first flight at Stratford, Connecticut, 13 January 1942. (SikorskyHistorical Archives)
Les Morris at the controls of the Vought-Sikorsky VS-316A (XR-4, serial number 41-18874) on its first flight at Stratford, Connecticut, 14 January 1942. (Sikorsky Historical Archives)

14 January 1942: Chief Test Pilot Charles Lester (“Les”) Morris (1908–1991) made the first flight of the Vought-Sikorsky VS-316A at Stratford, Connecticut. The first flight lasted approximately 3 minutes, and by the end of the day, Morris had made 6 flights totaling 25 minutes duration.

“One-half left front close-up head-and-shoulders view of test pilot Charles L. “Les” Morris posed seated in the cockpit of the Sikorsky VS-300 helicopter (r/n NX28996), March 29, 1943.” (Hans Groenhoff Photographic Collection, Smithsonian Institution National Air and Space Museum NASM-HGC-1408)

The VS-316A (which was designated XR-4 by the U.S. Army Air Corps and assigned serial number 41-18874), established the single main rotor/anti-torque tail rotor configuration. It was a two-place helicopter with side-by-side seating and dual flight controls.

The fabric-covered three-blade main rotor was 38 feet (11.582 meters) in diameter and turned counter-clockwise as seen from above. (The advancing blade is on the helicopter’s right.) The tail rotor was mounted to the aft end of the tail boom in a tractor configuration, and rotated counter-clockwise when seen from the helicopter’s right side.

The VS-316A was 33 feet, 11.5 inches (10.351 meters) long and 12 feet, 5 inches (3.785 meters) high. It weighed 2,010 pounds (911.7 kilograms) empty and the maximum gross weight was 2,540 pounds (1,152.1 kilograms).

The original engine installed in the VS-316A was an air-cooled, normally-aspirated, 499.805-cubic-inch-displacement (8.190 liter) Warner Aircraft Corporation Scarab SS-50 seven-cylinder radial  engine with a compression ratio of 5.55:1. The SS-50 was a direct-drive engine, with a maximum continuous power rating of 109 horsepower at 1,865 r.p.m., and 145 horsepower at 2,050 r.p.m. at Sea Level for takeoff. 73-octane gasoline was required. The SS50 was 2 feet, 5 inches (0.737 meters) long, 3 feet, 0-9/16 inches (0.929 meters) in diameter and weighed 306 pounds (139 kilograms).

gor Ivanovich Sikorsky and Charles Lester Morris with the XR-4 at Wright Field, Ohio, May 1942. (Sikorsky Historical Archives)
Orville Wright and Igor Ivanovich Sikorsky with the XR-4 at Wright Field, Ohio, May 1942. (Sikorsky Historical Archives)

Numerous modifications were made, including lengthening the main rotor blades, covering them with metal, and upgrading the engine to a 200 horsepower Warner R-550-1 Super Scarab. The XR-4 was redesignated XR-4C. This would be the world’s first production helicopter. It is at the Steven F. Udvar-Hazy Center of the Smithsonian National Air and Space Museum.

Sikorsky XR-4C 41-18874 at the National Air and Space Museum. (NASM)
Sikorsky XR-4C 41-18874 at the National Air and Space Museum. (NASM)

© 2019, Bryan R. Swopes

10 January 1966

The prototype Bell Model 206A JetRanger, serial number 1, civil registration N8560F, hovering out of ground effect. (Bell Helicopter Company)
The prototype Bell Model 206A JetRanger, serial number 1, civil registration N8560F, hovering out of ground effect. (Bell Helicopter Company)

10 January 1966: The prototype Bell Model 206A JetRanger serial number 1, N8560F, made its first flight at at the Bell Helicopter Company plant at Hurst, Texas. This aircraft would be in production for almost 45 years. The final JetRanger to be built, Bell 206B-3 serial number 4690, was delivered in December 2010 and production came to an end.

During early production of the Model 206A, cabin sections were built by Beechcraft and Agusta then shipped to Bell at Fort Worth. (The vertical seam just to the rear of the fuel cap distinguished the two.) Oil pressure and temperature gauges for the engine and transmission, the loadmeter and fuel quantity indicator were provided by Cessna.

The  Bell JetRanger is a 5-place, single-engine light civil helicopter based on the Bell Helicopter’s unsuccessful OH-4 entrant for the U.S. Army’s Light Observation Helicopter (LOH, or “loach”) contract. It is flown by a single pilot in the right front seat. Dual flight controls can be installed for a second pilot. The helicopter was certified for VFR flight, but could be modified for instrument flight.

The industrial design firm of Charles Wilfred Butler

“. . . was responsible for the complete redesign of the Bell OH-4A prototype army helicopter (1961) into the Bell Jet Ranger (1965). He and his designers restyled the machine inside and out in the manner of automotive design, creating in the process one of the world’s most successful and beautiful helicopters.”

Encyclopedia Britannica.

The JetRanger is 38 feet, 9.5 inches (11.824 meters) long, overall. On standard skid landing gear the overall height is 9 feet, 4 inches (2.845 meters). The Bell 206A has an empty weight of approximately 1,700 pounds (771 kilograms), depending on installed equipment. The maximum gross weight is 3,200 pounds (1,451.5 kilograms). With an external load suspended from the cargo hook, the maximum gross weight is increased to 3,350 pounds (1,519.5 kilograms).

The two-bladed main rotor is semi-rigid and under-slung, a common feature of Bell’s main rotor design. It has a diameter of 33 feet, 4.0 inches (10.160 meters) and turns counter-clockwise (seen from above) at 394 r.p.m. (100% NR). (The advancing blade is on the helicopter’s right side.) The rotor blade has a chord of 1 foot, 1.0 inches (0.330 meter) and 10° negative twist. The airfoil is symmetrical. The cyclic and collective pitch controls are hydraulically-boosted.

The first Bell 206B JetRanger (Bell Helicopter Co.)
The first Bell 206A JetRanger, N8560F. (Bell Helicopter Co.)

The two-bladed tail rotor assembly is also semi-rigid and is positioned on the left side of the tail boom in a pusher configuration. It turns at 2,550 r.p.m., clockwise, as seen from the helicopter’s left. (The advancing blade is below the axis of rotation.) The tail rotor diameter is 5 feet, 6.0 inches (1.676 meters).

The turboshaft engine is mounted above the roof of the fuselage, to the rear of the main transmission. Output shafts lead forward to the transmission and aft to the tail rotor 90° gear box. The transmission and rotor mast are mounted tilting slightly forward and to the left. This assists in the helicopter’s lift off to a hover, helps to offset its translating tendency, and keeps the passenger cabin in a near-level attitude during cruise flight.

A vertical fin is attached at the aft end of the tail boom. The fin is offset 4° to the right to unload the tail rotor in cruise flight. Fixed horizontal stabilizers with an inverted asymmetric airfoil are attached to the tail boom. In cruise flight, these provide a downward force that keeps the passenger cabin in a near-level attitude.

The 206A was powered by an Allison 250-C18 turboshaft engine (T63-A-700) which produced a maximum of 317 shaft horsepower at 104% N1, 53,164 r.pm. The improved Model 206B JetRanger and 206B-2 JetRanger II used a 370 horsepower 250–C20 engine, and the Model 206B-3 JetRanger III had 250-C20B, -C20J or -C20R engines installed, rated at 420 shaft horsepower at 105% N1, (53,519 r.p.m.). Many 206As were upgraded to 206Bs and they are sometimes referred to as a “206A/B.” The Allison 250-C20B has a 7-stage compressor section with 6-stage axial-flow stages, and 1 centrifugal-flow stage. The 4-stage axial-flow turbine has a 2-stage gas producer (N1) and 2-stage power turbine (N2). These were very light weight engines, ranging from just 141 to 173 pounds (64.0 to 78.5 kilograms).

The helicopter’s main transmission is limited to a maximum input of 317 shaft horsepower (100% Torque, 5-minute limit). The engine’s accessory gear unit reduces the output shaft speed to 6,016 r.p.m. N2, which is further reduced by the transmission’s planetary gears, and the tail rotor 90° gear box.

The JetRanger has a maximum speed, VNE, of 150 miles per hour (241 kilometers per hour) up to 3,000 feet (914 meters). Its best rate of climb, VY, is at 60 miles per hour (97 kilometers per hour) and best speed in autorotation (minimum rate of descent and maximum distance) is at 80 miles per hour (129 kilometers per hour), resulting in a glide ratio of about 4:1. The service ceiling is 13,500 feet (4,145 meters) with the helicopter’s gross weight above 3,000 pounds (1,361 kilograms), and 20,000 feet (6,096 meters) when below 3,000 pounds. The helicopter has a maximum range of 430 miles (692 kilometers).

After being used as a factory demonstrator and development aircraft, N8560F was retired from flight status and used as a maintenance ground training device at Bell’s training school at Hurst.

Note: The Model 206A-1 was adopted by the U.S. Army as the OH-58A Kiowa. Though very similar in appearance to the Model 206A and 206B, the OH-58A differs significantly. Few of the parts are interchangeable between the types.

Three view drawing of the Bell Model 206A/B JetRanger with dimensions. (Bell Helicopter TEXTRON)
Three view drawing of the Bell Model 206A/B JetRanger with dimensions. (Bell Helicopter TEXTRON)

© 2018, Bryan R. Swopes

9 January 1941

BT308, the Avro Lancaster prototype, at RAF Ringway, 9 January 1941. (Avro Heritage Museum)
Captain Harry Albert (“Sam”) Brown, O.B.E. (Photograph courtesy of Neil Corbett, Test & Research Pilots, Flight Test Engineers)

9 January 1941: Test pilot Captain Harry Albert (“Sam”) Brown, O.B.E., (1896–1953) makes the first flight of the Avro Lancaster prototype, BT308, at RAF Ringway, Cheshire, England, south of Manchester.

Throughout World War II, 7,377 of these long range heavy bombers were produced for the Royal Air Force. The majority were powered by Rolls-Royce or Packard Merlin V-12 engines—the same engines that powered the Supermarine Spitfire and North American P-51 Mustang fighters.

The bomber was designed by Roy Chadwick, F.R.S.A., F.R.Ae.S., the Chief Designer and Engineer of A. V. Roe & Company Limited, based on the earlier twin-engine Avro Manchester Mk.I. Because of this, it was originally designated as the Manchester Mk.III, before being re-named Lancaster. Chadwick was appointed Commander of the Most Excellent Order of the British Empire, 2 June 1943, for his work.

The first prototype, BT308, was unarmed and had three small vertical fins.

Avro 683 Lancaster prototype BT308, shortly after the first flight at Manchester, 9 January 1941. (A.V.Roe via R.A.Scholefield) Photograph used with permission.
Avro 683 Lancaster prototype BT308, shortly after the first flight at RAF Ringway, Manchester, England, 9 January 1941. (A.V.Roe via R.A.Scholefield) Photograph is from The R.A. Scholefield Collection and is used with permission.

With the second prototype, DG595, the small center vertical fin was deleted and two larger fins were used at the outboard ends of a longer horizontal tailplane. DG595 was also equipped with power gun turrets at the nose, dorsal and ventral positions, and at the tail.

Avro Lancaster DG595, the second protoype of the Royal Air Force four-engine heavy bomber. This armed prototype has the twin-tail arrangement of the production aircraft. (Unattributed)
Avro Lancaster DG595, the second protoype of the Royal Air Force four-engine long range heavy bomber. This armed prototype has the twin-tail arrangement of the production aircraft. (Test & Research Pilots, Flight Test Engineers)
Air Ministry clearance form for Avro 638 Lancaster BT308. Shown on page 1 are the aircraft's engine type and serial numbers.
Air Ministry clearance form for Avro 683 Lancaster BT308. Shown on page 1 are the aircraft’s engine type and serial numbers.
Air Ministry test flight clearance form, Page 2.
Air Ministry test flight clearance form, Page 2. This form is signed by the airplane’s designer, Roy Chadwick, 5 January 1941.

The first production model, Lancaster Mk.I, was operated by a crew of seven: pilot, flight engineer, navigator/bombardier, radio operator and three gunners. It was a large, all-metal, mid-wing monoplane with retractable landing gear. It was 68 feet, 11 inches (21.001 meters) long with a wingspan of 102 feet, 0 inches (31.090) meters and an overall height of 19 feet, 6 inches (5.944 meters). The Mk.I had an empty weight of 36,900 pounds (16,738 kilograms) and its maximum takeoff weight was 68,000 pounds (30,909 kilograms).

BT308 and early production Lancasters were equipped with four liquid-cooled, supercharged, 1,648.96-cubic-inch-displacement (27.01 liter), Roll-Royce Merlin XX single overhead camshaft (SOHC) 60° V-12 engines, which were rated at 1,480 horsepower at 3,000 r.p.m. to 6,000 feet (1,829 meters). The Merlins drove three-bladed de Havilland Hydromatic quick-feathering, constant-speed airscrews (propellers), which had a diameter of 13 feet, 0 inches (3.962 meters), through a 0.420:1 gear reduction.

DG595 was used for performance testing at the Aeroplane and Armament Experimental Establishment (A&AEE) at Boscombe Down. The Mark I had a maximum economic cruise speed of 267 miles per hour (430 kilometers per hour) at 20,800 feet (6,340 meters), and a maximum speed of 286 miles per hour (460 kilometers per hour) at 20,000 feet (6,096 meters) at a gross weight of 45,300 pounds (20,548 kilograms).¹ Its service ceiling was 20,000 feet (6,096 meters) at 64,500 pounds (29,257 kilograms). It had a range of  2,530 miles (4,072 kilometers) with a 7,000 pound (3,175 kilogram) bomb load.

The Lancaster was designed to carry a 14,000 pound (6,350 kilogram) bomb load, but modified bombers carried the 22,000 pound (9,979 kilogram) Grand Slam bomb. For defense, the standard Lancaster had eight Browning .303-caliber Mark II machine guns in three power-operated turrets, with a total of 14,000 rounds of ammunition.

According to the Royal Air Force, “Almost half all Lancasters delivered during the war (3,345 of 7,373) were lost on operations with the loss of over 21,000 crew members.”

Only two airworthy Avro Lancasters are in existence.

The Royal Air Force Battle of Britain Memorial Flight Avro Lancaster Mk.I, PA474. This airplane was built in 1945 by Vickers Armstongs Ltd. at Broughton, Wales, United Kingdom. (Battle of Britain Memorial Flight)
The Canadian Warplane Heritage Museum’s Avro Lancaster Mk.X FM213, flies formation with an Royal Canadian Air Force CF-188 Hornet. The bomber is marked VR A and nicknamed “Vera.” FM213 was built by Victory Aircraft Ltd., Malton, Ontario, Canada. (Canadian Warplane Heritage Museum)

¹ Speeds shown are True Air Speed (T.A.S.)

© 2019, Bryan R. Swopes

8 January 1944

Lockheed XP-80 prototype, 44-83020, at Muroc AAF, 8 January 1944. (U.S. Air Force)
The Lockheed XP-80 prototype, 44-83020, at Muroc Army Air Field, 8 January 1944. (Lockheed Martin Aeronautics Company)
Milo Burcham
Milo Garrett Burcham

8 January 1944: At Muroc Army Air Field (later to become Edwards Air Force Base), the Lockheed Aircraft Corporation’s chief engineering test pilot, Milo Garrett Burcham, took the prototype Model L-140, the Army Air Forces XP-80 Shooting Star, 44-83020, for its first flight.

Tex Johnston, who would later become Boeing’s Chief of Flight Test, was at Muroc testing the Bell Aircraft Corporation XP-59 Airacomet. He wrote about the XP-80’s first flight in his autobiography:

Early on the morning of the scheduled first flight of the XP-80, busload after busload of political dignitaries and almost every general in the Army Air Force arrived at the northwest end of the lake a short distance from our hangar. Scheduled takeoff time had passed. I was afraid Milo was having difficulties. Then I heard the H.1B fire up, and he taxied by on the lake bed in front of our ramp. What a beautiful bird—another product of Kelly Johnson, Lockheed’s famed chief design engineer—tricycle gear, very thin wings, and a clear-view bubble canopy. Milo gave me the okay sign.

This was the initial flight of America’s second jet fighter, and what a flight it was. Milo taxied along in front of generals and politicians, turned south and applied full power. I could see the spectators’ fingers going in their ears. The smoke and sand were flying as the engine reached full power, and the XP-80 roared down the lake. Milo pulled her off, retracted gear and flaps, and held her on the deck. Accelerating, he pulled up in a climbing right turn, rolled into a left turn to a north heading, and from an altitude I estimated to be 4,000 feet [1,219 meters] entered a full-bore dive headed for the buses. He started the pull-up in front of our hangar and was in a 60-degree climb when he passed over the buses doing consecutive aileron rolls at 360 degrees per second up to 10,000 feet [3,048 meters]. He then rolled over and came screaming back. He shot the place up north and south, east and west, landed and coasted up in front of the spectators, engine off and winding down. I have never seen a crowd so excited since my barnstorming days. I returned to the office and dictated a wire to [Robert M.] Stanley [Chief Test Pilot, Bell Aircraft Corporation]WITNESSED LOCKHEED XP-80 INITIAL FLIGHT STOP VERY IMPRESSIVE STOP BACK TO DRAWING BOARD STOP SIGNED, TEX I knew he would understand.

Tex Johnston: Jet-Age Test Pilot, by A.M. “Tex” Johnston with Charles Barton, Smithsonian Books, Washington, D.C., 1 June 1992, Chapter 5 at Pages 127–128.

A few minor problems caused Burcham to end the flight after approximately five minutes but these were quickly resolved and flight testing continued.

The XP-80 was the first American airplane to exceed 500 miles per hour (805 kilometers per hour) in level flight.

Clarence L. "Kelly" Johnson with a scale model of a Lockheed P-80A-1-LO Shooting Star. Johnson's "Skunk Works" also designed the F-104 Starfighter, U-2, A-12 Oxcart and SR-71A Blackbird. (Lockheed Martin Aeronautical Company)
Clarence L. “Kelly” Johnson with a scale model of a Lockheed P-80A-1-LO Shooting Star. Johnson’s “Skunk Works” also designed the F-104 Starfighter, U-2, A-12 Oxcart and SR-71A Blackbird. (Lockheed Martin Aeronautics Company)

The Lockheed XP-80 was designed by Clarence L. “Kelly” Johnson and a small team of engineers that would become known as the “Skunk Works,” in response to a U.S. Army Air Corps proposal to build a single-engine fighter around the de Havilland Halford H.1B Goblin turbojet engine. (The Goblin powered the de Havilland DH.100 Vampire F.1 fighter.)

Lockheed Aircraft Corporation was given a development contract which required that a prototype be ready to fly within just 180 days.

Milo Burcham, on the left, shakes hands with Clarence L. Johnson following the first flight of the Lockheed XP-80, 8 January 1944. (Lockheed)
Milo Burcham, on the left, shakes hands with Clarence L. Johnson following the first flight of the Lockheed XP-80, 8 January 1944. (Lockheed Martin Aeronautics Co.)

The XP-80 was a single-seat, single-engine airplane with straight wings and retractable tricycle landing gear. Intakes for engine air were placed low on the fuselage, just forward of the wings. The engine exhaust was ducted straight out through the tail. For the first prototype, the cockpit was not pressurized but would be on production airplanes.

As was customary for World War II U.S. Army Air Forces aircraft, the prototype was camouflaged in non-reflective Dark Green with Light Gull Gray undersides. The blue and white “star and bar” national insignia was painted on the aft fuselage, and Lockheed’s winged-star corporate logo was on the nose and vertical fin. Later, the airplane’s radio call, 483020 was stenciled on the fin in yellow paint. The number 20 was painted on either side of the nose in large block letters. Eventually the tip of the nose was painted white and a large number 78 was painted just ahead of the intakes in yellow block numerals. Early in the test program, rounded tips were installed on the wings and tail surfaces. This is how the XP-80 appears today.

Lockheed XP-80 parked at Muroc Dry Lake, 1944 (Lockheed)
The highly-polished Dark Green and Light Gull Gray Lockheed XP-80 prototype parked at Muroc Dry Lake, 1944 (Lockheed Martin Aeronautics Co.)

The XP-80 is 32 feet, 911/16 inches (9.9997 meters) long with a wingspan of 37 feet, ⅞-inch (11.2998 meters) and overall height of 10 feet, 21/16 inches (3.1004 meters). It had a Basic Weight for Flight Test of 6,418.5 pounds (2,911.4 kilograms) and Gross Weight (as actually weighed prior to test flight) of 8,859.5 pounds (4,018.6 kilograms).

The Halford H.1B Goblin used a single-stage centrifugal-flow compressor, sixteen combustion chambers, and single-stage axial-flow turbine. It had a straight-through configuration rather than the reverse-flow of the Whittle turbojet from which it was derived. The H.1B produced 2,460 pounds of thrust (10.94 kilonewtons) at 9,500 r.p.m., and 3,000 pounds (13.34 kilonewtons) at 10,500 r.p.m. The Goblin weighed approximately 1,300 pounds (590 kilograms).

Cutaway illustration of the Halford H.1B Goblin turbojet engine. (FLIGHT and AIRCRAFT ENGINEER)

The XP-80 has a maximum speed of 502 miles per hour (808 kilometers per hour) at 20,480 feet (6,242 meters) and a rate of climb of 3,000 feet per minute (15.24 meters per second). The service ceiling is 41,000 feet (12,497 meters).

Unusual for a prototype, the XP-80 was armed. Six air-cooled Browning AN-M2 .50-caliber machine guns were placed in the nose. The maximum ammunition capacity for the prototype was 200 rounds per gun.

The Halford engine was unreliable and Lockheed recommended redesigning the the fighter around the larger, more powerful General Electric I-40 (produced by GE and Allison as the J33 turbojet). The proposal was accepted and following prototypes were built as the XP-80A.

Lockheed built 1,715 P-80s for the U.S. Air Force and U.S. Navy. They entered combat during the Korean War in 1950. A two-seat trainer version was even more numerous: the famous T-33A Shooting Star.

Lockheed XP-80 Shooting Star 44-83020 was used as a test aircraft and jet trainer for several years. In 1949, it was donated to the Smithsonian Institution. 44-83020 is on display at the Jet Aviation exhibit of the National Air and Space Museum. It was restored beginning in 1976, and over the next two years nearly 5,000 man-hours of work were needed to complete the restoration.

The prototype Lockheed XP-80 Shooting Star, 44-83020, at teh Smithsonian Institution National Air and Space Museum. (NASM)
The prototype Lockheed XP-80 Shooting Star, s/n 140-1001, 44-83020, at the Smithsonian Institution National Air and Space Museum. (NASM)

© 2019, Bryan R. Swopes

31 December 1968

The prototype Tupolev Tu-144, CCCP-68001, during its first flight, 31 December 1968.  The chase plane is a Mikoyan-Gurevich MiG-21I, which was modified to use the same wing profile as the Tu-144. (Tupolev PJSC, via Kazan National Research Technical University)

31 December 1968: At Zhukovsky Airport, located on the banks of the Moskva River, 22 miles (36 kilometers) southeast of central Moscow, the prototype Tupolev Tu-144 supersonic airliner took off on its first flight. Tupolev Design Bureau test pilot Eduard Vaganovich Elyan (Эдуа́рд Вага́нович Еля́н ) was the aircraft commander. The prototype, known as Izdeliye 044, carried the Soviet registration number CCCP-68001.

The flight lasted 37 minutes. The new airplane was reported as responsive and easy to fly. There were no significant problems.

This test flight took place two months before the first flight of the rival Aérospatiale Concorde supersonic airliner.¹

Tupolev Design Bureau test pilot Эдуа́рд Вага́нович Еля́н (Eduard Vaganovich Elyan) in the cockpit of the prototype Tupolev Tu-144. (Фото © Sputnik / Евгений Умнов ǁ armeniasputnik.am)
Tupolev Tu-144 prototype crew following the first flight. Eduard Elyan is at left. Andrei Nikolayevich Tupolev and Aleksey Andreevich Tupolev are at the center of the image. (Tupolev PJSC)

The Tupolev Tu-144 was prototype large four-engine double-delta-winged supersonic transport aircraft with a “droop” nose for improved low speed cockpit visibility. The airplane was assembled at Zhukovsky Airport from parts manufactured at the Tupolev Experimental Design Bureau plant (also known as OKB-156, or MMZ Opyt). It was flown by a flight test crew of four. The prototype completed 9 October 1968.

Izdeliye 044 was 59.50 meters (195 feet, 2.5 inches) long, with a wingspan of 27.65 meters (90 feet, 8.6 inches) and overall height of 11.35 meters (37 feet, 2.9 inches). The wing had an approximate area of 438 square meters (4,715 square feet). At the root, the double delta wing had a chord of 35.60 meters (116 feet, 9.6 inches). The fuselage was cylindrical with an external diameter of 3.00 meters (9 feet, 10.1 inches). The prototype had a maximum takeoff weight (MTOW) of 160,000 kilograms (352,740 pounds).

CCCP-68001 first went supersonic 5 June 1969. It reached Mach 2.02 on 26 May 1970. The highest speed reached by the prototype was Mach 2.30, and its highest altitude, 16,960 meters (55,643 feet). Izdeliye 044 made a total 180 flight hours over 120 flights. Its final flight took place 27 April 1973. The prototype was scrapped at Zhukovsky.

e Tupolev Tu-144 prototype rollout. (Tupolev PJSC)

Izdeliye 044 was powered by four Kuznetsov NK-144 engines with a maximum thrust of 171.6 kilonewtons (38,577 pounds thrust) per engine. Its maximum thrust while supersonic was 127.5 (28,663 pounds thrust). The NK-144 is a two-spool, axial-flow turbofan engine with afterburner. It uses a 2-stage fan section, 14-stage compressor section (11 high- and 3 low-pressure stages), and a 3-stage turbine (1 high- and 2 low-pressure stages). The NK-144 is 5.200 meters (17 feet, 0.7 inches) long, 1.500 meters (4 feet, 11.1 inches) in diameter and weighs 2,827 kilograms (6,233 pounds). (The prototype had all four engines placed side by side along the aircraft centerline).

Tupolev Tu-144 engines mounted side by side. (Tupolev PJSC)

The Tu-144 was intended to carry 120 passengers on international flights. It was designed to have a cruise speed of 2,200 kilometers per hour (1,367 miles per hour), a maximum speed of 2,443 kilometers per hour (1,518 miles per hour), and service ceiling of 18,500 meters (60,696 feet). Its planned range was 2,920 kilometers (1,814 statute miles).

Tupolev Tu-144 under construction. (Tupolev PJSC, via Kazan National Research Technical University)

The production Tupolev Tu-144 aircraft was lengthened 6.2 meters (20 feet, 4.1 inches), added canards, had changes to wing which included shortening the chord at the root 2.10 meters (6 feet, 10.7 inches), increasing the span 0.35 meters (1 foot, 1.8 inches), drooping and squaring off the wing tips, a significant increase in wing area, changes to engine placement and shape of the nacelles, and the location of the landing gear. The engines were upgraded to the improved NK144A.

The Tupolev Tu-144 was the first supersonic transport to enter service, 26 December 1975.² In actual commercial service, the Tu-144 was extremely unreliable. It was withdrawn from service after a total of just 102 commercial flights, including only 55 passenger flights.

A total of 17 Tu-144s were built, including one pre-production aircraft, five Tu-144S series production aircraft, and ten improved Tu-144Ds with Kolosev RD-36-51A engines. One of the Tu-144Ds, RA-77114, was converted to a Tu-144LL for the United States National Aeronautics and Space Administration (NASA). This airplane made its last flight in 1999.

Colonel Eduard Vaganovich Elyan

Eduard Vaganovich Elyan was born at Baku, Azerbaijan Soviet Socialist Republic, 20 August 1926. From 1938 he lived in Norilsk, Russian Soviet Federative Socialist Rrepublic, a recently established mining settlement in Krasnoyarsk Krai, approximately 185 miles (300 kilometers) north of the Arctic Circle. (Norilsk is now a large, closed city). He also lived in Moscow and Sverdlovsk.

Elyan attended the Sverdlovsk Air Force School in 1944, and entered the Soviet military in June of that year. He underwent initial pilot training at the 9th Military Aviation School at Buguruslan, Orenburg Oblast, Russia, then Borisglebsk Military Aviation School of Pilots, Voronezh Oblast, graduating in 1948. He remained there as a flight instructor until 1951.

From 1951 to 1953, Elyan attended the test pilot school at Zhukovsky. He then began working at the Flight Research Institute at Zhukovsky, in 1953.

From March 1958 through August 1960, Elyan served as a test pilot for the Sukhoi Design Bureau (OKB-51). He then went on to the Tupolev OKB, remaining there until December 1981.

In 1967, Elyan was named an Honored Test Pilot of the Soviet Union. In 1969, the Fédération Aéronautique Internationale (FAI) awarded him the Paul Tissandier Diploma for his accompliushments in aviation. On 26 April 1971, Elyan was named Hero of the Soviet Union, awarded the order of Lenin and the Gold Star Medal.

Tupolev Tu-144D CCCP-77111 on fire, 23 May 1978.

On 23 May 1978, Elyan made an emergency belly landing of a Tu-144D, CCCP-77111, in an open field near Yegoryevsk. During the airliner’s sixth test flight,  a fuel leak started a fire in the right wing. Three engines had to be shut down in succession and it was impossible to return to Ramenskoye Airport, where the flight had originated. The Tu-144D touched down at about 380 kilometers per hour (236 miles per hour). Two crewmen were killed when the nose cone collapsed on impact. The aircraft continued to burn after landing. The six survivors escaped. Elyan was seriously injured.

Wreckage of Tupolev Tu-144D CCCP-77111. (Tu-144 SST)

Elyan stopped test flying in 1982. He worked as an engineer for Mikoyan OKB. He retired in 1996.

Eduard Vaganovich Elyan died at Rostov-on-Don 6 April 2006. His remains were buried at the Northern Cemetery there.

grave

¹ See This Day in Aviation for 2 March 1969 at https://www.thisdayinaviation.com/2-march-1969/

² See This Day in Aviation for 26 December 1975 at https://www.thisdayinaviation.com/26-december-1975/

© 2024, Bryan R. Swopes