Tag Archives: Supersonic Airliner

3 June 1973

Tupolev Tu-144S CCCP-77102 at the Paris Air Show. © Aris Pappas

3 June 1973: While maneuvering at low altitude at the Paris Air Show, the first production Tupolev Tu-144S, CCCP-77102, Aeroflot’s new Mach 2+ supersonic airliner, broke apart in midair and crashed into a residential area. All six crew members and eight people on the ground died. Another 25 were injured.

The Tu-144 was built by Tupolev OKB at the Voronezh Aviation Plant (VASO), Pridacha Airport, Voronezh. It was a large delta-winged aircraft with a “droop” nose for improved low speed cockpit visibility and retractable canards mounted high on the fuselage behind the cockpit. It was flown by a crew of 3 and was designed to carry up to 140 passengers.

77106 is 65.50 meters (215 feet, 6.6 inches) long, with a wingspan of 28.00 meters (91 feet, 10.4 inches). The tip of the vertical fin was 11.45 meters (37 feet, 6.8 inches) high. The 144S has a total wing are of 503 square meters (5,414 square feet). Its empty weight is 91,800 kilograms (202,384 pounds) and the maximum takeoff weight is 195,000 kilograms (429,901 pounds). (A number of Tu-144S airliners had extended wing tips, increasing the span to 28.80 meters (94 feet, 5.9 inches) and the wing area to 507 square meters (5,457 square feet).

An Aeroflot Tupolev Tu-144S supersonic transport, CCCP-77106, loading cargo at Demodovo before its third commercial flight, 1976. (© Valeriy A. Vladimirov)

The Tu-144S was powered by four Kuznetsov NK-144A engines. 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). It is rated at 147.0 kilonewtons (33,047 pounds of thrust) for supersonic cruise, and 178.0 kilonewtons (40,016 pounds of thrust) with afterburner for takeoff. The NK-144A 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 144S has a cruise speed of Mach 2.07 (2,200 kilometers per hour/1,367 miles per hour) with a maximum speed of Mach 2.35 (2,500 kilometers per hour/1,553 miles per hour). The service ceiling is approximately 20,000 meters (65,617 feet). Its practical range is 3,080 kilometers (1,914 miles).

In actual commercial service, the Tu-144 was extremely unreliable. It was withdrawn from service after a total of just 102 commercial flights, including 55 passenger flights.

The cause of the accident is not known, other than the obvious structural failure, but there is speculation that the Tu-144 was trying to avoid another airplane. You Tube has several video clips of the accident. This one, beginning at 1:10, has the best visuals of the inflight break up:

© 2016, Bryan R. Swopes

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24 October 2003

Concorde G-BOAG lands at LHR
Concorde G-BOAG lands at LHR. (www.concordest.com)

24 October 2003: At 4:05 p.m. BST, the final commercial flight of the British Airways Concorde came to an end with the landing of G-BOAG at London Heathrow Airport. It landed third in sequence with G-BOAE and G-BOAF after all three supersonic airliners had made a low pass over London.

G-BOAG had flown from New York under the command of Captain Mike Bannister, with First Officer Jonathan Napier and Engineer Officer David Hoyle. There were 100 celebrity passengers on board.

“Alpha Golf,” British Aerospace serial number 100-214, was the final Concorde built in Britain, and, at its retirement, was the lowest-time Concorde in British Airway’s fleet. It first flew at Filton, 21 April 1978, registered G-BFKW. It was delivered to British Airways 6 February 1980. In 1981, 100-214 was re-registered as G-BOAG. During the early 1980s, it was taken out of service and used as a source for parts for the other Concordes, but returned to airworthy status in 1985.

After a series of farewell flights, G-BOAG was retired to The Museum of Flight, Seattle, Washington. It had flown 16,239 hours, made 5,066 takeoffs and landings and had gone supersonic 5,633 times.

Captain Bannister with Concorde, London Heathrow Airport, 2016. (British Airways)

© 2018, Bryan R. Swopes

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21 August 1961

Douglas DC-8-43 N9604Z is accopmanied by a U.S. Air Force Lockheed F-104A Starfighter, near Edwards Air Force base, California.
Douglas DC-8-43 N9604Z is accompanied by a U.S. Air Force Lockheed F-104A Starfighter, near Edwards Air Force Base, California. (Douglas Aircraft Co.)

On 21 August 1961, a Douglas DC-8-43, N9604Z, c/n 45623, Line Number 130, flown by Chief Test Pilot William Marshall Magruder, Paul Patten, Joseph Tomich and Richard H. Edwards climbed to 50,090 feet (15,267 meters) near Edwards Air Force Base. Placing the DC-8 into a dive, it reached Mach 1.012 (668 miles per hour/1,075 kilometers per hour) while descending through 41,088 feet (12,524 meters). The airliner maintained this supersonic speed for 16 seconds. This was the first time that a civil airliner had “broken the Sound Barrier.”

An Air Force F-100 Super Sabre and F-104 Starfighter were chase planes for this flight. Reportedly, the F-104 was flown by the legendary test pilot, Colonel Chuck Yeager.

The Douglas DC-8 is a commercial jet airliner, a contemporary of the Boeing 707 and Convair 880. It was operated by a flight crew of three and could carry up to 177 passengers. The DC-8 was powered by four turbojet or turbofan engines mounted on pylons suspended below the wings. The wings’ leading edges were swept to 30°, as was the vertical fin and horizontal tailplane.

The DC-8-40 series is 150 feet, 6 inches (45.872 meters) long with a wingspan of 142 feet, 5 inches (43.409 meters) and overall height of 42 feet, 4 inches (12.903 meters). It had an empty weight of 124,790 pounds (56,604 kilograms) and maximum takeoff weight of 315,000 pounds (142,882 kilograms).

The DC-8-40 series had a cruising speed of 0.82 Mach (542 miles per hour/872 kilometers per hour) at 35,000 feet (10,668 meters). Its maximum range was 5,905 nautical miles (6,795 statute miles, 10,936 kilometers).

N9604Z was powered by four Rolls-Royce Conway RCo.12 Mk 509 two-shaft axial-flow turbofan engines, rated at 17,500 pounds of thrust (77.844 kilonewtons) at 9,990 r.p.m. The 509 is 11 feet, 3.9 inches (3.452 meters) long, 3 feet, 6.2 inches (1.072 meters) in diameter, and weighs 4,542 pounds (2,060 kilograms).

N9604Z was delivered to Canadian Pacific Airlines 15 November 1961, re-registered CF-CPG, and named Empress of Montreal. It later flew under CP Air as Empress of Buenos Aires. The DC-8 was scrapped at Opa Locka Municipal Airport, north of Miami, Florida, in May 1981.

© 2016, Bryan R. Swopes

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