28 September 1952: At Aérodrome de Melun Villaroche, test pilot Kostia Rozanoff made the first flight of the Dassault MD.452 Mystère IV jet fighter prototype, 01. The flight lasted 25 minutes.
The aircraft was developed from the earlier Mystère II. The design specification called for the new fighter to reach Mach 1 in a dive. The wings were swept to 38° rather than the 30° of the II, and thinner, using a different curvature. The fuselage also had a different cross section. The new airplane reached 0.92 Mach in level flight and later in testing, broke the Sound Barrier in a dive.
The prototype used a Rolls-Royce RB.44 Tay turbojet engine, though production Mystère IVA aircraft used a license-built copy, the Hispano-Suiza Verdon 250.
The Mystère IVA was a single-place, single-engine swept wing jet fighter bomber capable of transonic speed. It was 12.85 meters (42 feet, 1.9 inches) long, with a wingspan of 11.12 meters (36 feet, 5.8 inches) and overall height of 4.46 meters (14 feet, 7.6 inches). The airplane had an empty weight of 5,850 kilograms (12,897 pounds). Maximum speed was 1,120 kilometers per hour (696 miles per hour). The service ceiling was 15,000 meters (49,213 feet).
The fighter bomber was armed with two 30 mm revolver cannons with 150 rounds of ammunition per gun, and up to 1,000 kilograms (2,200 pounds) of bombs on hardpoints under the wings.
411 Mystère IV A fighters were built by Société des Avions Marcel Dassault from 1954 to 1958. 242 were delivered to the Armée de l’air (the French Air Force).
28 September 1923: Lieutenant David Rittenhouse, United States Navy, won the 1923 Coupe d’Aviation Maritime Jacques Schneider (the Schneider Cup) race, held at Cowes, England. Lieutenant Rittenhouse’s aircraft was a Curtiss CR-3 seaplane.
The race began at 11:00 a.m. Competitors were required to taxi on the surface across the starting line before becoming airborne. National teams started at 15-minute intervals. The race consisted of five timed laps of a 68.9 kilometer ( 42.8 miles) triangular. The starting teams were: the United States, Great Britain and France. The Italian team had unexpectedly withdrawn a few days before the event. Several mishaps had sidelined airplanes from the remaining teams, and by the 23rd, only four seaplanes were ready for the race.
At 11:00 a.m., the two United State Navy Curtiss CR-3 seaplanes started the first lap. 15 Minutes later, the British Supermarine Sea Lion III flying boat followed, and fianally the French Hydroavions C.A.M.S. 38 made its start.
David Rittenhouse’s Curtiss was clearly the fastest airplane. He had nearly completed the first lap by the time the British Sea Lion III was starting, and the second as the French C.A.M.S. 38 began its run. Rittenhouse’s lap times were: (1) 15 minutes, 6-2/5 seconds; (2). 14 minutes, 22-1/5 seconds; (3) 14 minutes, 24-4/5 seconds; (4) 14 minutes, 22-1/5 seconds; and (5) 14 minutes, 11-1/5 seconds. Rittenhouses’ average speed over the final lap was 181.17 miles per hour (291.56 kilometers per hour), and for the race, 177.38 miles per hour (285.47 kilometers per hour).
Rittenhouse also set a Fédération Aéronautique Internationale (FAI) World Record for Speed Over 200 Kilometers with an average speed of 273.41 kilometers per hour (169.89 miles per hour.)¹
Lieutenant Rutledge Irvine, U.S. Navy, in CR-3 #3, finished in second place, 1 minute, 39 seconds behind Rittenhouse, with an average speed of 173.35 miles per hour (278.98 kilometers per hour). Captain Henry Biard, Royal Air Force, was third with the Sea Lion III, at 157.07 miles per hour (252.78 kilometers per hour). Hurel and the C.A.M.S. 38 dropped out on the second lap with engine trouble and did not finish the race.
The Curtiss CR-3 was a single-place, single-engine racing biplane with two pontoons for takeoffs and landings on water. It was 24 feet, 8 inches (7.518 meters) long with a wingspan of 22 feet, 8 inches (6.909 meters) and overall height of 10 feet, 9 inches (3.277 meters). Its empty weight was 2,119 pounds (961 kilograms), and gross weight, 2,597 pounds (1,178 kilograms).
The CR-3 was powered by a liquid-cooled, normally aspirated 1,145.1-cubic-inch-displacement (18.765 liter) Curtiss D-12 dual overhead cam (DOHC) 60° V-12 engine with four valves per cylinder and a 5.7:1 compression ratio. It was a direct-drive engine, producing 475 horsepower at 2,320 r.p.m. It turned a two-bladed forged aluminum fixed-pitch propeller designed by Sylvanus Albert Reed, Ph.D. The D-12 was 58¾ inches (1.492 meters) long, 34¾ inches (0.883 meters) high and 28¼ inches (0.718 meters) wide. It weighed 671 pounds (304 kilograms). The engine was fueled by a 50/50 mixture of gasoline and benzol.
David Rittenhouse was born at St. Paul, Minnesota, 16 June 1894. he was the second child of Charles Edwain Rittenhouse, a banker, and Grace Hubbell Rittenhouse. He was a member of the Class of 1918 at the University of Minnesota, but left before graduating to serve in France during World War I.
Rittenhouse enlisted in the French Army at Paris, 12 March 1917. He served with the 21st Division. He was discharged from the French Army 30 September 1917 and returned to the United States. Shortly after arrive, 5 November 1917, Rittenhouse enlisted in the United States Navy. He underwent aviation ground school at the Dunwoody Institute in Minneapolis, Minnesota, before being sent to Key West, Florida, for flight training. After six weeks there, he received advanced training at Miami and Pensacola.
David Rittenhouse was commissioned an Ensign, United States Navy, 6 September 1918. he was ordered to sea aboard the battleship USS Wyoming (BB-32), and then USS Idaho (BB-42). Ensign Rittenhouse was detached from the Pacific Fleet, 5 May 1922, and transferred to the Naval Air Station, Anacostia, effective 1 June 1922.
Ensign David Rittenhouse married Miss Marie Youngerman, 24 June 1922, at Des Moines, Iowa.
Rittenhouse was promoted to the rank of Commander, 1 August 1938. He retired from the United States Navy in March 1941.
After leaving the Navy, Rittenhouse went to work for the Grumman Aircraft Engineering Corporation at Bethpage, New York.
Commander David Rittenhouse, United States Navy (Retired) died at St. Petersburg, Florida, 29 October 1962, at the age of 68 years. He was buried at the Arlington National Cemetery, Arlington, Virginia.
28 September 1921: At McCook Field, Ohio, First Lieutenant John Arthur Macready, Air Service, United States Army, flew a turbo-supercharged Packard Lepère L USA C. II biplane, serial number S.C. 40015, to a world record altitude of 40,800 feet (12,436 meters). He won his first of three Mackay Trophies for this flight.
John A. Macready graduated from Stanford University in 1913 with a degree in economics. He enlisted in the Aviation Section, Signal Corps, U.S. Army, as a Private 1st Class, 16 July 1917. On 27 December 1917, he was commissioned as a 1st lieutenant in the Aviation Section, Signal Officers Reserve Corps. Lieutenant Macready became a flight instructor at Brooks Field, Texas, where he wrote the standard instructional text. On 11 October 1918, Lieutenant Macready was promoted to the rank of captain. After World War I, he became an engineering test pilot at McCook Field near Dayton, Ohio. He reverted to his permanent rank of first lieutenant, 18 September 1920. In 1923, Macready graduated from the Aeronautical Engineer Course, Air Service Engineering School.
For six years John Macready was responsible for testing turbosuperchargers, which enabled aircraft engines to produce continuous power at increasing altitudes. It was while testing these that he established his altitude record.
During a 35 hour, 18 minute endurance flight at Rockwell Field, San Diego, California, 5–6 October 1922, John Macready and Oakley G. Kelly pioneered the use of inflight refueling from another aircraft. Also, he and Kelly made the first non-stop transcontinental flight when they flew a Fokker T-2 across the United States from Roosevelt Field, Long Island, New York, to Rockwell Field in 26 hours, 50 minutes, 38.6 seconds, 2–3 May 1923. Macready won his second and third Mackay Trophies for these achievements. He is the only man to have won it three times.
The Packard Lepère L USA C.II was a World War I biplane designed by French aeronautical engineer Captain Georges Lepère and built by the Packard Motor Car Company of Detroit, Michigan. It was to have been a two-place fighter, light bomber and observation aircraft armed with four machine guns.
The Packard Lepère was 25 feet, 3-1/8 inches (7.699 meters) long. The upper and lower wings had an equal span of 41 feet, 7¼ inches (12.681 meters), and equal chord of 5 feet, 5¾ inches (1.670 meters). The vertical gap between the wings was 5 feet, 5/8-inch (1.527 meters) and the lower wing was staggered 2 feet, 15/16-inch (0.633 meters) behind the upper wing. The wings’ incidence was +1°. Upper and lower wings were equipped with ailerons, and had no sweep or dihedral. The height of the Packard Lepère, sitting on its landing gear, was 9 feet, 7 inches (2.921 meters). The Packard Lepère had an empty weight of 2,561.5 pounds (1,161.9 kilograms) and its gross weight was 3,746.0 pounds (1,699.2 kilograms).
The fuselage was a wooden structure with a rectangular cross section. It was covered with three layers of veneer, (2 mahogany, 1 white wood) with a total thickness of 3/32-inch (2.38 millimeters). The fuselage had a maximum width of 2 feet, 10 inches (0.864 meters) and maximum depth of 4 feet, 0 inches (1.219 meters).
The wings were also of wooden construction, with two spruce spars and spruce ribs. Three layers of wood veneer covered the upper surfaces. Heavy bracing wires were used. These had an airfoil cross-section and actually provided additional lift. The interplane struts were unusual in that they were fully-framed units.
The Packard Lepère was powered by a water-cooled, normally-aspirated, 1,649.336-cubic-inch-displacement (27.028 liter) Liberty L-12 single overhead cam (SOHC) 45° V-12 engine with a compression ratio of 5.4:1. The Liberty produced 408 horsepower at 1,800 r.p.m. The L-12 as a right-hand tractor, direct-drive engine and it turned turned a two-bladed, fixed-pitch wooden propeller. The Liberty 12 was 5 feet, 7.375 inches (1.711 meters) long, 2 feet, 3.0 inches (0.686 meters) wide, and 3 feet, 5.5 inches (1.054 meters) high. It weighed 844 pounds (383 kilograms).
The engine coolant radiator was positioned horizontally in the center section of the Lepère’s upper wing. Water flowed through the radiator at a rate of 80 gallons (303 liters) per minute.
The Packard Lepère had a maximum speed of 130.4 miles per hour (209.9 kilometers per hour) at 5,000 feet (1,524 meters), 127.6 miles per hour (205.4 kilometers per hour) at 10,000 feet (3,048 meters), 122.4 miles per hour (197.0 kilometers per hour) at 15,000 feet (4,572 meters), 110.0 miles per hour (177.0 kilometers per hours) at 18,000 feet (5,486 meters) and 94.0 miles per hour (151.3 kilometers per hour) at 20,000 feet (6,096 meters). Its cruising speed was 112 miles per hour (180 was kilometers per hour). The airplane could climb to 5,000 feet in 4 minutes, 24 seconds, and to 20,000 feet in 36 minutes, 36 seconds. In standard configuration, the Packard Lepère had a service ceiling of 20,200 feet (6,157 meters). Its range was 320 miles (515 kilometers).
The fighter’s armament consisted of two fixed M1918 Marlin .30-caliber aircraft machine guns mounted on the right side of the fuselage, synchronized to fire forward through the propeller arc, with 1,000 rounds of ammunition, and two M1918 Lewis .30-caliber machine guns on a flexible mount with 970 rounds of ammunition.
The Air Service had ordered 3,525 of these airplanes, but when the War ended only 28 had been built. The contract was cancelled.
Six Packard Lepères were used for flight testing at McCook Field, Dayton, Ohio, assigned project numbers P 44, P 53, P 54, P 65, P 70 and P 80. One of these, flown by Major Rudolph W. Schroeder, set two Fédération Aéronautique Internationale (FAI) World Records for Altitude at 9,455 meters (31,020 feet), 18 September 1918.¹ On 6 September 1919, Schroeder flew a Packard Lepère to 8,616 meters (28,268 feet) while carrying a passenger. This set two more World Altitude Records.² Flying P 53, A.S. 40015, he set a fifth FAI altitude record of 10,093 meters (33,114 feet), 27 February 1920.³ On 28 September 1921, Captain John A. Macready flew P 53 to an altitude of 40,800 feet (12,436 meters). On 13 October 1922, 1st Lieutenant Theodore J. Koenig flew P 53 to win the Liberty Engine Builders’ Trophy Race at Selfridge Field, near Mount Clemens, Michigan. Koenig completed ten laps of the triangular racecourse in 2:00:01.54, at an average speed of 128.8 miles per hour (207.3 kilometers per hour).
The only Packard Lepère in existence, serial number A.S. 42133, is in the collection of the National Museum of the United States Air Force, Wright-Patterson Air Force Base, Ohio.
28 September 1920: The fifth Gordon Bennett Aviation Trophy Races was held. The Trophy was sponsored by an American businessman, James Gordon Bennett, Jr., publisher of the New York Herald newspaper. Gordon Bennett had previously sponsored the James Gordon Bennett Cup for yachting, the Gordon Bennett Cup for automobile racing, and the Coupe Aéronautique Gordon Bennett for ballooning.
The airplane races were held annually from 1909 until 1913. In those years, the race had been one twice by France, once by the United Kingdom and twice by the United States. Like the Coupe d’Aviation Maritime Jacques Schneider (the Schneider Cup) for seaplanes, the nation which won the race three times consecutively would be permanently awarded the trophy. Because of the World War, no races were held 1914–1919.
THE GORDON-BENNETT RACE
It had been anticipated that this year’s race for the Gordon-Bennett Aviation Trophy would have been a much better contest than any of the five previous competitions. Great Britain and the United States had challenged France, and the teams of each of the three countries comprised very fast machines. But disappointment followed on disappointment, and in the end only one competitor—Sadi Lacointe, on a French Nieuport—completed the full course of 300 kiloms. without trouble, and he thereby won the trophy for France for the third time.
During the early morning of Tuesday a thick mist hung over the ground, and it was not until 1.36 p.m. that the first competitor got away, this being Kirsch on one of the French Nieuports. He was followed by de Romanet on a Spad, and the third member of the French team—the favourite—Sadi Lecointe. The American team—Rinehardt on the Dayton-Wright and Major Schroeder on the Army machine—followed a few minutes after, and then there was a long wait before Raynham, on the Martinsyde “Semiquaver,” the only British representative, got away. Kirsch did the first 100 kiloms in 21 mins. 29 secs., while de Romanet took 22 mins. 52-1/5 secs., but both had to come down soon after they completed the second lap, and Kirsch retired. The Americans did not survive long, Rinehardt having to come down after a quarter of an hour, having difficulty with his steering, while Schroeder was put out of the contest by engine trouble at the end of the first round.
Raynham was unable to complete one lap, apparently being in trouble with the engine of his machine.
This left Sadi Lecointe, whose time for the 100 kiloms. was 21 mins. 36 secs., for 200 kiloms. 43 mins. 42-3/5 secs., and for the full course of 300 kiloms. 1 hr. 6 mins. 17-1/5 secs., his average speed working out to 270 kiloms. (168 miles) per hour. De Romanet completed the course in 1 hr. 39 mins. 50-3/5 secs.
The Trophy remains in France, and as she has won it three times it stays there permanently. Sadi Lecointe also won the cash prize of 10,000 francs offered by the Aero Club of France, and a similar prize offered by the Aero Club of America.
The French team had been chosen in an eliminating trial on Sunday, when the three pilots mentioned above were selected. Barault, on a Borel-Hispano, would probably have secured the third place if he had only flown the course as it was arranged.
The American team was reduced by one owing to the accident to Rholfs on the Curtiss. On landing at Villacoublay the chassis collapsed, and the pilot was injured, but not very seriously.
—FLIGHT, The AIRCRAFT ENGINEER & AIRSHIPS, No. 614 (No. 40, Vol. XII.), 30 September 1930, at Page 1038
The 1920 air race, held on Tuesday, 28 September, over a course of 300 kilometers (186.4 miles) at Villecoublay-La Marmogne, France. It was won by Nieuport-Delâge’s chief test pilot, Joseph Sadi-Lecointe, flying a Nieuport-Delâge Ni-D 29V. As France had previously won the 1912 and 1913 races, the Gordon Bennett Aviation Trophy was permanently awarded to the Aero Club of France and retired.
During the race, Sadi-Lecointe set a a Fédération Aéronautique Internationale (FAI) World Record for Speed Over 200 Kilometers 274.60 kilometers per hour (170.63 miles per hour). The FAI official time for the distance was 43 minutes, 42-3/5 seconds. (FAI Record File Number 15494)
Sadi-Lecointe’s Ni-D 29V was one of three racing variants of the highly successful single-engine, single-seat Ni-D 29C.1 biplane fighter, which was the fastest in the world at the time. The Ni-D 29V was 21 feet, 3.5 inches (6.489 meters) long, with a wing span of just 6.00 meters (19 feet, 8¼ inches), shortened from the 31 feet, 10 inch (9.703 meters) wingspan of the standard production chasseur.
The airplane was powered by a water-cooled, normally aspirated, 18.473 liter (1,127.29-cubic-inch displacement) right-hand tractor Hispano-Suiza 8Fb single overhead cam (SOHC) 90° V-8 engine, modified to increase its output to 320 horsepower. This was a direct-drive engine, and turned a two-bladed-fixed pitch propeller. The engine was 1.32 meters (4 feet, 4 inches) long, 0.89 meters (2 feet, 11 inches) wide, and 0.88 meters (2 feet, 10½ inches) high. It weighed 256 kilograms (564 pounds).
The standard airplane had a top speed of 235 kilometers per hour (146 miles per hour), a range of 580 kilometers (360 miles) and a service ceiling of 8,500 meters (27,887 feet).
Flight commented on de Romanet’s airplane:
As regards the French Spad flown by Bernard de Romanet, this had the standard Spad fuselage of monocoque construction, but an alteration in the wing arrangement was noticeable. Instead of carrying the top plane on centre section struts from the body, the G.B. Spad had its top plane attached direct to the fuselage. Judging by its performance, this innovation did not improve the speed, and the machine was obviously slower than Lecointe’s Nieuport. In the first place, the maximum cross section of the body is much greater than the Nieuport, and the large nose radiator probably does not make matters better, although one would imagine that the two Lamlin radiators fitted to the Nieuport offer quite a lot of resistance. However, these radiators are now very extensively fitted on French machines, so perhaps their resistance is less than one would be inclined to expect.
—FLIGHT The Aircraft Engineer & Airships, No. 615 (Vol. XII, No. 41, 7 October 1920, Page 1058, Column 1
The SPAD Type 20 bis (Spad-Herbemont) was a single-seat, single-engine, single-bay biplane racer based on the two-seat S.XX fighter, designed by André Herbemont. The racer was 7.50 meters (24 feet, 7.3 inches) long with a wingspan of 6.48 meters (21 feet, 3.1 inches) and height of 2.50 meters (8 feet, 2.4 inches). The wings had a surface area of 14 square meters (151 square feet). The airplane had an empty weight of 890 kilograms (1,962 pounds), and gross weight of 1,050 kilograms (2,315 pounds). The racer carried 80 kilograms (176 pounds) of fuel.
The S.20s were powered by a water-cooled, normally-aspirated La Société Hispano-Suiza single-overhead cam 90° V-8 engine rated at 300 horsepower. (Specific variant unknown.)
Joseph Sadi-Lecointe learned to fly in 1910. The Aero Club de France awarded him its license number 431 on 10 February 1910.
He joined the Service Aéronautique (the original form of the French Air Force) as a mechanic in October 1912, and was designated pilote militaire nº375, 20 September 1913. He served as a pilot during World War I, flying the Blériot XI-2, Morane LA and Nieuprt X, then in December 1915 became a flight instructor at l’Ecole de Pilotage d’Avord. Sadi-Lacointe was promoted from the enlisted ranks to sous-lieutenant, 17 September 1917, and was assigned as a test pilot at Blériot–Société Pour L’Aviation et ses Dérivés, where he worked on the development of the famous SPAD S.XIII C.1 fighter.
After the War, he was a test pilot for Nieuport-Delâge, and participated in numerous races and set a series of speed and altitude records with the company’s airplanes.
Sadi-Lecointe returned to military service in 1925 and participated in the Second Moroccan War. Then in 1927, he returned to his position as chief test pilot for Nieuport-Delâge. From 1936 to 1940, he served as Inspector General of Aviation for the French Air Ministry. With the outbreak of World War II in 1939, Lieutenant Colonel Sadi-Lecointe was again recalled to military service as Inspector of Flying Schools.
With the Fall of France, Sadi-Lacointe joined La Résistance française, and operated with the group, Rafale Andromède. He was captured and tortured by the Gestapo at Paris, and died as a result, 15 July 1944.
Joseph Sadi-Lecointe, Commandeur Ordre national de la Légion d’honneur, was awarded the Croix de Guerre in three wars. He was posthumously awarded the Médaille de la Résistance. The Aéro-Club de France awarded him its Grande Médaille d’Or de l’Aéro-Club de France. During his flying career, Sadi-Lecointe set seven World Records for Speed, and three World Records for Altitude.
28 September 1912: Second Lieutenant Lewis Cassidy Rockwell was flying a Wright Model B, Signal Corps Aeroplane No. 4, at the United States Army training field at College Park, Maryland, where he was being trained as a military aviator. Corporal Frank S. Scott, U.S. Army Signal Corps, a mechanic on these airplanes, rode as a passenger aboard Lieutenant Rockwell’s airplane.
A contemporary newspaper article describes what happened next:
Washington, Sept 28. – Two more lives were sacrificed to aviation at the United States army aviation field, College Park, Md., today when an army aeroplane fell thirty-five feet to the ground instantly killing Corporal Frank S. Scott and so seriously injuring Second Lieutenant Lewis C. Rockwell that he died a few hours later. Hundreds of people, including fellow army officers, breathlessly witnessed the accident.
Lieutenant Rockwell had started up with Corporal Scott as a passenger to make a test flight in his trial for a military aviator’s license. They had been in the air about eight minutes, ascending to a height of five hundred feet, then gliding down, had gotten within thirty-five of the ground. At this point the aviator turned the machine upward again and something went wrong. Instantly the aeroplane buckled and crashed to the ground.
Scott was hurled several hundred feet from the machine while Rockwell lay a few feet away from him. Brother officers found Scott lifeless. Rockwell, his head buried partly in the earth, still showed signs of life but was unconscious. He was rushed to a hospital. He never regained consciousness. Brother officers who witnessed the accident were at a loss to account for it.
—The Daily Journal and Tribune, Knoxville, Tennessee, 29 September 1912.
According to an article published by the Scott Air Force Base History Office,
The flight started out in routine fashion of Sept. 28, 1912. Lieutenant Rockwell did a solo. The clumsy aircraft banged and coughed its way into the air, fluttering over College Park at the remarkable speed of 40 miles per hour. Assured that everything was in proper working order, the lieutenant landed and picked up Corporal Scott. The two men took off in the open biplane; and, after reaching an altitude of 150 feet, leveled off and soared for about 10 minutes. Coming in for a landing, the frail craft developed trouble and nosed downward. For tragic seconds, its 30 horsepower, 4-cylinder engine popped at full power, but the biplane continued its long dive, hurtling to earth with a crushing impact.
Nothing was left but a heap of splintered wood and torn canvas. Corporal Scott was dead when the running soldiers reached the scene of the crash. Lieutenant Rockwell was rushed to Washington’s Walter Reed hospital, but died on the operating table. More than 300 people witnessed the crash.
—Air University, NCO and Enlisted Resources, NCO/Enlisted History
Corporal Scott was the first United States enlisted soldier to be killed in an airplane crash. The crash was also the first in which two or more persons were killed.
Both men were buried with military honors at Arlington National Cemetery.
When it became customary to name Air Service facilities in honor of military aviation personnel killed during the early experimental days of military aviation, the airfield at Belleville, Illinois, was named Scott Field in honor of Corporal Scott. It is now Scott Air Force Base.
The Air Service training field was later moved from College Park, Maryland, to San Diego, California. The new air field there was named Rockwell Field, after Lt. Lewis Rockwell. It is now NAS North Island.
The Wright Model B was a two-place, single-engine biplane. The elevator was at the rear, rather than in canard position as had been the earlier Wright airplanes. (This configuration was known as “headless.”) Roll control was through the Wright Brother’s patented wing-warping system. It was 26 feet (7.925 meters) long with a wingspan of 39 feet (11.887 meters). It weighed 800 pounds (363 kilograms) empty and had a gross weight of 1,250 pounds (567 kilograms).
The Model B was powered by a single water-cooled, fuel-injected, 240.528 cubic-inch-displacement (3.942 liter) Wright vertical overhead-valve inline four-cylinder gasoline engine with 2 valves per cylinder and a compression ratio of 4.165:1. It produced 32 horsepower at 1,310 r.p.m. During three years of production (1908–1911) Wright “4-40” engines were built that operated from 1,325 to 1,500 r.p.m. Power output ranged from 28 to 40 horsepower. These engines weighed from 160 to 180 pounds (72.6–81.6 kilograms).
Two 8½ foot (2.591 meters) diameter, two-bladed, counter-rotating propellers, driven by a chain drive, are mounted behind the wings in pusher configuration. They turned 445 r.p.m.
The Wright Model B had a maximum speed of approximately 40 miles per hour (64 kilometers per hour) and its range was 110 miles (177 kilometers).
Approximately 100 Model B aeroplanes were built by the Wrights and under license by Burgess from 1910 to 1914. Three are known to exist.