10 April 1959

Prototype Northrop YT-38-5-NO Talon 58-1191 takes off for the first time at Edwards AFB, 10 April 1959. (U.S. Air Force)
Prototype Northrop YT-38-5-NO Talon 58-1191 at Edwards AFB, 10 April 1959. (U.S. Air Force)

10 April 1959: Northrop test pilot Lewis A. Nelson made the first takeoff of the prototype YT-38-5-NO Talon, serial number 58-1191, at Edwards Air Force Base, California.

A private venture by Northrop, the Talon was designed by a team led by Edgar Schmued, famous for his work on the North American Aviation P-51 Mustang, F-86 Sabre and the F-100 Super Sabre. The Talon is a twin-engine advanced trainer capable of supersonic speeds. More than 5,500 hours of wind tunnel testing was performed before the airplane’s final configuration was determined.

After testing, the two YT-38s were modified to the YT-38A configuration. The modified aircraft was accepted by the United States Air Force and ordered into production as the T-38A Talon.

The T-38 was the world’s first supersonic flight trainer. The Northrop T-38A Talon is a pressurized, two-place, twin-engine, jet trainer. Its fuselage is very aerodynamically clean and uses the “area-rule” (“coked”) to improve its supersonic capability. It is 46 feet, 4.5 inches (14.135 meters) long with a wingspan of 25 feet, 3 inches (7.696 meters) and overall height of 12 feet, 10.5 inches (3.924 meters). The one-piece wing has an area of 170 square feet (15.79 square meters). The leading edge is swept 32º. The airplane’s empty weight is 7,200 pounds (3,266 kilograms) and maximum takeoff weight is approximately 12,700 pounds (5,761 kilograms).

Northrop YT-38-5-NO 58-1191 in flight over Edwards AFB, 10 April 1959. (U.S. Air Force)
Northrop YT-38-5-NO 58-1191 in flight over Edwards AFB, 10 April 1959. (U.S. Air Force)

The T-38A is powered by two General Electric J85-GE-5 turbojet engines. The J85 is a single-shaft axial-flow turbojet engine with an 8-stage compressor section and 2-stage turbine. The J85-GE-5 is rated at 2,680 pounds of thrust (11.921 kilonewtons), and 3,850 pounds (17.126 kilonewtons) with afterburner. It is 108.1 inches (2.746 meters) long, 22.0 inches (0.559 meters) in diameter and weighs 584 pounds (265 kilograms).

The T-38A has a maximum speed of Mach 1.08 (822 miles per hour/1,323 kilometers per hour) at Sea Level, and Mach 1.3 (882 miles per hour/1,419 kilometers per hour) at 30,000 feet (9,144 meters). It has a rate of climb of 33,600 feet per minute (171 meters per second) and a service ceiling of 55,000 feet (16,764 meters). Its range is 1,140 miles (1,835 kilometers).

Northrop YT-38-5-NO Talon 58-1191. (Northrop)
Northrop YT-38-5-NO Talon 58-1191. (Northrop)

Between 1959 and 1972, 1,187 T-38s were built at Northrop’s Hawthorne, California factory. As of 2014, 546 T-38s remained in the U.S. Air Force active inventory. The U.S. Navy has 10, and NASA operates 15.

Northrop YT-38-5-NO Talon 58-1191. (Northrop)
Northrop YT-38-5-NO Talon 58-1191. (Northrop)
58-1191 and sister ship 58-1192 were converted to YT-38As. (Northrop)
Lewis A. Nelson. (Photograph courtesy of Neil Corbett, Test and Research Pilots, Flight Test Engineers)

Lewis Albert Nelson was born 13 September 1920 at San Diego, California, the second of three children of George Walter Nelson, an electrician, and Edith Clarissa Merrill Nelson. He grew up in Santa Cruz, California.

Nelson first flew in a Piper J-3 Cub as a teenager. While attending a junior college in 1939, he was accepted into the Civilian Pilot Training Program and continued while at San Jose State College, San Jose, California.

Nelson enlisted as an aviation cadet in the U.S. Army Air Corps at Moffett Field, California, 12 January 1942. He was 5 feet, 7 inches (1.702 meters) tall and weighed 154 pounds (69.9 kilograms). He served until 1947. He was twice awarded the Distinguished Flying Cross.

After leaving the Air Corps, Nelson studied aeronautical engineering at the University of Southern California (USC) in Los Angeles, graduating in 1949. He later earned a master’s degree from the University of California, Los Angeles (UCLA).

Lew Nelson worked as an aeronautical engineer for the National Advisory Commission on Aeronautics (NACA), and joined the Northrop Corporation as a test pilot in 1950. In 1952 he was promoted to Chief Experimental Test Pilot. Nelson made the first flights of a number of Northrop aircraft, such as the F-89 Scorpion, N-156 and F-5. Nelson retired from Northrop in 1986.

He married Elaine M. Miller, Clark County, Nevada, 28 April 1979.

Lewis Albert Nelson died at Menifee, California, 15 January 2015, at the age of 94 years. His remains were buried at sea.

© 2019, Bryan R. Swopes

10 April 1933

M.C. 72 (FAI)
Macchi-Castoldi M.C.72 MM 177 (FAI)

10 April 1933: At Lago di Garda, Brescia, Italy, Warrant Officer Francesco Agello, Regia Aeronautica, flew the Macchi-Castoldi M.C. 72, MM 177, the first of five float planes in the series, over a 3-kilometer course to set a new Fédération Aéronautique Internationale (FAI) World Record of 682.08 kilometers per hour (423.83 miles per hour).¹

The following year, 23 October 1934, Agello would fly the fifth M.C. 72, MM 181, to 709.21 kilometers per hour (440.68 miles per hour) over a 3 kilometer course, breaking his own record by almost 30 kilometers per hour. ²

Warrant Officer Francesco Agello, Regia Aeronautica
Warrant Officer Francesco Agello, Regia Aeronautica
Side line drawing of the Macchi-Castoldi M.C. 72. (NASM-SI-73-554)
Ing. Mario Castoldi

The Macchi-Castoldi M.C.72 was designed by Ing. Mario Castoldi for Aeronautica Macchi-S.p.A. It was a single-place, single-engine, low-wing monoplane float plane constructed of wood and metal. It was 8.32 meters (27 feet, 3½ inches) long with a wingspan of 9.48 meters (31 feet, 1¼ inches) and height of 3.30 meters (10 feet, 10 inches). Surface radiators were placed on top of each wing and surface oil coolers on the floats.

The M.C.72 had an empty weight of 2,505 kilograms (5,523 pounds), loaded weight of 2,907 kilograms (6,409 pounds) and maximum takeoff weight of 3,031 kilograms (6,682 pounds).

In this photograph of a Macchi-Castoldi M.C. 72 during an engine test, the surface-mounted oil coolers on the pontoons are visible.

The M.C. 72 was powered by a liquid-cooled, supercharged, 50.256 liter (3,066.805 cubic inch), Fiat S.p.A. AS.6 24-cylinder dual overhead cam 60° V-24 engine with 4 valves per cylinder and a compression ratio of 7:1. The engine produced 3,100 horsepower at 3,300 r.p.m. with 11.5 pounds of boost (0.79 Bar). It drove two contra-rotating, two-bladed, fixed-pitch propellers with a diameter of 2.59 meters (8 feet, 6 inches) through a 0.60:1 gear reduction. Each contra-rotating blade cancelled the torque effect of the other. The Fiat AS.6 was 3.365 meters (132.48 inches) long, 0.702 meters (27.638 inches) wide, and 0.976 meters (27.64 inches) high. It weighed 930 kilograms (2,050 pounds).

Illustration of the Fiat AS.6 V-24 aircraft engine, right side. (Old Machine Press)

Five Macchi M.C.72 float planes had been built for the 1931 Schneider Trophy race, but problems with the Fiat AS.6 engine, which was essentially two AS.5 V-12s assembled back-to-back, prevented them from competing. Four test pilots, including Francesco Agello, had been selected to fly the airplanes for speed record attempts. Two of them, Captain Giovanni Monti and Lieutenant Stanislao Bellini, were killed while testing the M.C.72, and the third died in the crash of another type. The cause of the accidents were explosions within the engines’ intake tract. Though they ran perfectly on test stands, in flight, they began to backfire, then explode.

It was discovered by Francis Rodwell (“Rod”) Banks,³ a British engineer who had been called in to develop a special high-octane fuel, that the Fiat engineers had overlooked the ram effect of the 400 mile per hour (644kilometers per hour) slipstream. This caused the fuel mixture to become too lean, resulting in predetonation and backfiring. A modification was made to the intake and the problem was resolved.

Francesco Agello

Francesco Agello was twice awarded the Henry De La Vaulx Medal by the Fédération Aéronautique Internationale, and also awarded the Medaglia d’oro al valore aeronautico. In part, his citation read, “A high speed pilot of exceptional courage and, after competition in difficult and dangerous test flights during the development of the fastest seaplane in the world, twice he conquered the absolute world speed record.”

Capitano Agello was killed in a mid-air collision, 26 November 1942, while testing a Macchi C.202 Fogore fighter.

Macchi M.C.72 at Aeronautica Militare
The world record setting Macchi-Costoldi M.C.72, MM 181, at the Museo Storico dell’Aeronautica Militare (Italian Air Force Museum) in Vigna di Valle, Italy.

¹ FAI Record File Number 11836

² FAI Record File Number 4497

³  Air Commodore Francis Rodwell Banks, CB, OBE, Hon. CGIA, Hon. FRAeS, Hon. FAIAA, FIMechE., Finst. Pet., FRSA, CEng., MSAE; Commandeur Ordre national de la Légion d’honneur; Commander, Legion of Merit; Орденъ Св. Станислава (Military Order of St. Stanislaus (Imperial Russia) (22 March 1898–12 May 1985)

© 2019, Bryan R. Swopes

9 April 1969

Brian Trubshaw and John Cochrane, aboard Concorde 002, 9 April 1969. (Photograph courtesy of Neil Corbett, Test and Research Pilots, Flight Test Engineers)
Brian Trubshaw and John Cochrane, aboard Concorde 002, 9 April 1969. (Photograph courtesy of Neil Corbett, Test and Research Pilots, Flight Test Engineers)

9 April 1969: Concorde 002, G-BSST, the first British-built prototype of the supersonic airliner, made its first flight from Filton Airport, Fairfield, England, with British Aerospace Corporation’s Chief Test Pilot, Ernest Brian Trubshaw CBO MVO, as pilot, John Cochrane as co-pilot and Flight Engineer Brian Watts. Also on board, monitoring a range of instruments in the forward cabin, were three other Test Flight Engineers, Mike Addley, John Allan and Peter Holding.

"Concorde 002 on April 9th 1969 ready for a test flight. The flight crew pose before take-off. From left to right, John Allan and Mike Addley (Flight test Observers) John Cochrane, co-pilot, Brian Trubshaw, pilot; Brian Watts, engineer and Peter Holding (Flight Test Observer)." (Stan Sims/Filton Library)
“Concorde 002 on April 9th 1969 ready for a test flight. The flight crew pose before take-off. From left to right, John Allan and Mike Addley (Flight test Observers) John Cochrane, co-pilot, Brian Trubshaw, pilot; Brian Watts, engineer and Peter Holding (Flight Test Observer).” (Stan Sims/Filton Library)

After a preliminary test flight, they landed the new prototype at RAF Fairford, 50 miles northeast, where the flight test program would continue. This flight was just five weeks after the French-built Concorde 001 had made its first flight.

The two prototypes were used to establish the airliner’s flight characteristics and performance envelope, and to develop flight procedures. Follow-on pre-production Concordes were constructed to go through government certification as a commercial airliner.

G-BSST’s career ended with 836 hours, 9 minutes total flight time, of which 173 hours, 26 minutes were supersonic. Concorde 002 is preserved at Royal Naval Air Station, Yeovilton, Somerset, England.

BAC Concorde 002, G-BSST, makes its first takeoff at Bristol Filton Airport, 9 April 1969. (BAC)
BAC Concorde 002, G-BSST, makes its first takeoff at Bristol Filton Airport, 9 April 1969. (BAC)

© 2017, Bryan R. Swopes

9 April 1967

The prototype Boeing 737-130, PA-099, N73700, first flight 9 April 1967. (Boeing)
The prototype Boeing 737-130, PA-099, N73700, first flight 9 April 1967. (Boeing)

At 1:15 p.m., 9 April 1967, the prototype Boeing 737-130, N73700, (internal number PA-099) took off from Boeing Field, Seattle, Washington, with test pilots Brien Singleton Wygle and Samuel Lewis (“Lew”) Wallick, Jr., in the cockpit. After a 2 hour, 30 minute flight, the new airliner landed at Paine Field, Everett, Washington.

When asked by a reporter what he thought about the new airplane, Boeing’s president, Bill Allen, replied, “I think they’ll be building this airplane when Bill Allen is in an old man’s home.”

Boeing test pilots Brien Wygle and Lew Wallick with the prototype 737 airliner, N73700. (Boeing)
Boeing test pilots Brien Wygle and Lew Wallick with the prototype 737 airliner, N73700. (Boeing)

He was right. In production since 1968, the Boeing 737 is the most popular airliner ever made and it is still in production. On 13 March 2018, the 10,000th 737 was delivered.

The first Boeing 737 under assembly. (Boeing)

Boeing 737-130 N73700 was a twin engine, medium-range airliner, operated by a pilot and co-pilot. It was designed to carry up to 124 passengers. The airplane is 97 feet (28.57 meters) long with a wingspan of 87 feet (26.52 meters) and overall height of 37 feet (11.3 meters). It has an empty weight of 56,893 pounds (25,807 kilograms) and gross weight of 111,000 pounds (50,350 kilograms).

N73700 is powered by two Pratt & Whitney JT8D-7 turbofan engines rated at 14,000 pounds of thrust, each. The JT8D is a two-spool engine with a 2-stage fan section, 13-stage compressor (6 low- and 7 high-pressure stages), nine combustion chambers and a 4-stage turbine (1 high- and 3 low-pressure stages). The JT8D-7 is 42.5 inches (1.080 meters) in diameter, 123.5 inches (3.137 meters) long, and weighs 3,096 pounds (1,404 kilograms).

The airliner’s cruise speed is 575 miles per hour (925 kilometers per hour) and its range is 1,150 miles (1,850 kilometers).

After the flight test and certification program was complete, Boeing handed N73700 over to the National Aeronautics and Space Administration at Langley Field, Virginia, 12 June 1973, where it became NASA 515 (N515NA).  The airliner was used for research in cockpit design, engine controls, high lift devices, etc. Because of it’s short and stubby appearance, NASA named it “Fat Albert.”

NASA 515, the first Boeing 737, photographed 29 November 1989. (NASA)

The prototype Boeing 737 ended its NASA career and was returned to Boeing, landing for the last time at Boeing Field’s Runway 31L, 3:11 p.m., PDT, 21 September 2003. Today, PA-099 is on display at the Museum of Flight, Seattle, Washington.

NASA 515, the prototype Boeing 737 airliner, rolling out on Runway 31L, Boeing Field, 3:11 p.m. PDT, 21 September 2003.
NASA 515, the prototype Boeing 737 airliner, rolling out on Runway 31L, Boeing Field, 3:11 p.m. PDT, 21 September 2003. (Robert A. Bogash)

© 2019, Bryan R. Swopes

9 April 1960

Tupolev Tu-114 CCCP-76459, holder of nineteen FAI World Records for Speed. (Уголок неба)

9 April 1960: Over a 5,000-kilometer course at Sternberg Point Observatory,¹ a Tupolev Tu-114 Rossiya four-engine turboprop airliner, serial number 88402, registered CCCP-76459, set seven Fédération Aéronautique Internationale flight records, including a world speed record of 877.21 kilometers per hour (545.07 miles per hour), while carrying a load of 25,000 kilograms (55,115.6 pounds).²

Colonel Ivan Moiseevich Sukhomlin

The airplane was flown by Colonel Ivan Moiseevich Sukhomlin (Иван Моисеевич Сухомлин) and Konstantin Petrovich Sapielkine (Константин Петрович Сапёлкин). On 24 March 1960, Colonel Sukhomlin and Colonel Boris Mikhailovich Timoshok flew Rossiya to set eight FAI world speed records,³ and on 1 April 1960, Colonel Sukhomlin flew the Tu-114 to set another seven speed records.⁴ The FAI credits Sukhomlin with 37 world records.

These are the fastest speed records ever established for any propeller-driven airplane. The records were retired by the FAI due to changes in rules.

Tupolev Tu-114 three-view illustration. (Уголок неба)

The record-setting Tu-114 was the second production airliner.

The Tupolev Tu-114 Rossiya was a four-engine, turboprop-powered airliner developed from the Tu-95 Bear nuclear-capable long-range heavy bomber. It had a flight crew of five, two pilots, a navigator and two flight engineers, and could be configured to carry from 120 to 220 passengers, or 30,000 kilograms of cargo.

The Tu-114 made its first flight 15 November 1957 under the command of Colonel Alexei Petrovich Yakimov,  and began regular service with Aeroflot 24 April 1961.

The Tu-114 is 54.10 meters (177 feet, 6 inches) long, with a wingspan of 51.10 meters (167 feet, 8 inches) and overall height of 15.50 meters (50 feet, 10 inches). The wings are swept aft to 35° at ¼-chord, and they have significant anhedral. Total wing area is 311.1 square meters (3,348.7 square feet).

Tupolev Tu 115 CCCP 76459, World Record holder. (Уголок неба)

The Tu-114 was powered by four Kuznetsov NK-12MV turboprop engines, each driving two contra-rotating four-bladed propellers. The NK-12 was rated at 14,795 shaft horsepower (10.89 megawatts). The NK-12 is a single-shaft axial-flow turboprop engine with a 14-stage compressor section and 5-stage turbine. The engine is 19 feet, 8.2 inches (6.000 meters) long, 3 feet, 11.3 inches (1.151 meters) in diameter, and weighs 5,181 pounds (2,350 kilograms).

The Tu-114 had a cruise speed of 770 kilometers per hour (478 miles per hour) at 9,000 meters (29,528 feet) (0.70 Mach), and a maximum speed of 894 kilometers per hour (556 miles per hour) at 8,000 meters (26,247 feet) (0.80 Mach). The airliner has a practical range of 7,000 kilometers (4,350 miles) and maximum ferry range of 8,800 kilometers (5,468 miles). The service ceiling as 12,000 meters (39,370 feet).

The airliner’s empty weight is 93,500 kilograms (206,132 pounds) and maximum takeoff weight is 179,000 kilograms (394,628 pounds).

A Tupolev Tu-114 at Paris-Le Bourget after a flight from Budapest, Hungary, 5 June 1959. (Magyar Hírek folyóirat/Wikipedia)

The Tupolev Tu-114 was produced from 1958 to 1963, with 32 built. They were in service until 1976.

CCCP-76459, the world-record-setting airliner, was displayed at Novogorod Airport, Veliky Novogorod, Russia, in 1977. It was destroyed by fire in 1990.

The world-record-setting Tupolev Tu-114, CCCP–76459 (s/n 88401) was destroyed by fire at Novogorod in 1990. (Detlev Grass via АВИАЦИЯ, ПОНЯТНАЯ ВСЕМ)

¹ The Sternberg Point Observatory, also known as the Sternberg Astronomical Institute (Государственный астрономический институт имени Штернберга), is located in Moscow, Russia.

Sternberg Astronomical Institute

² FAI Record File Numbers 3663, 3664, 3665 and 3666

³ FAI Record File Numbers 8125, 8126, 8127, 8128, 8129, 8130, 8131 and 8880: 871.38 kilometers per hour (541.45 miles per hour)

⁴ FAI Record File Numbers 8133, 8134, 8135, 8136, 8137, 8138 and 8139

© 2023, Bryan R. Swopes