Welcome to This Date in Aviation History, getting of you caught up on milestones, important historical events and people in aviation from September 14 through September 16.

September 14, 1939 – The first flight of the Sikorsky VS-300. Mankind probably began to dream of flight when they first saw the birds soaring effortlessly through the skies. And once the first airplanes began to mimic the birds as best they could, starting first with gliders and then powered flight in 1903, flying was very much a horizontal process. But what if we could create an aircraft that could take off vertically, fly, then hover and land vertically in the same fashion? The practical implications of such an idea would be enormous. But as much as the helicopter is a relatively modern invention, the idea for vertical flight goes all the way back to 400 BC, when Chinese children played with toys that had a wing on a stick that could be spun in their hands, toys that still exist to this day. And the first known design for a vertical flying machine can be found in the works of the Renaissance artist and engineer Leonardo da Vinci. It’s possible that he may even have created flying models, but there was no provision for keeping the whole model from spinning under the influence of the rotor. In later years, aircraft designers chased the dream of vertical flight, and it was actually achieved in aircraft such as the Focke-Achgelis Fa 223, though it had two rotors on twin booms to counteract the torque from the spinning rotors, and looked more like an airplane with propellers than a helicopter. It was not until Russian emigre Igor Sikorsky developed his VS-300 that the dream of vertical flight with a single rotor became a practical reality, creating the helicopter that we would recognize today. Sikorsky understood that he needed some way to counteract the torque of the main rotor, and he went through numerous configurations before settling on the single, vertical tail rotor to control aircraft yaw that became standard on most helicopters that followed.

An intermediate version of the VS-300, with three counter-torque rotors at the rear

But perhaps his greatest breakthrough came with his development of a cyclic control that tilted the spinning rotor disc to impart motion in a desired direction. In order to test his design safely, Sikorsky took a series of tethered flights, flying the machine himself while wearing his trademark fedora, with the first liftoff taking place on September 14, 1939. Following refinements to the control system, the first untethered flight took place in May of the following year. Where other designers had used multiple engines to power the two (or more) rotors of their helicopters, the VS-300 used a single 75 horsepower engine to turn both rotors, becoming the first in the US to use a single lifting rotor. and a single engine. The system of controls that Sikorsky developed has become the standard control system on most helicopters to this day. Sikorsky later developed the VS-300 into the R-4, which was purchased by the US Army and became the world’s first mass produced helicopter. (Photo authors unknown)


September 15, 1991 – The first flight of the Boeing C-17 Globemaster III. Napoleon Bonaparte (or perhaps Frederick the Great) famously said, “An army marches on its stomach,” meaning that without food and supplies, an army goes nowhere, and practically the entire history of warfare has revolved around getting supplies to the army, no matter how far from home it is. By WWII, the development of large strategic airlifters made that task significantly easier and, by the 1960s, the job was being done by large jet-powered aircraft like the Lockheed C-141 Starlifter and Lockheed C-5 Galaxy. But as the US Air Force looked at the logistics problems in the 1970s, particularly after their experiences in the Vietnam War, they knew they needed a cargo jet that could haul more goods farther but also land on shorter, rougher runways. To deal with these new challenges, the Air force created a set of requirements as part of its Advanced Medium STOL Transport program (AMST), and evaluated two entries, the Boeing YC-14 and the McDonnell Douglas YC-15. Both aircraft took design cues from the Lockheed C-130 Hercules, having a high, straight wing and a raised tail to allow cargo loading in the rear. However, the AMST program was canceled before a winner was chosen, and it wasn’t until 1980, when the Air Force was facing the reality of a fleet of aging C-141s, that they revisited the concept, now designated the C-X program. In response to these requirements, McDonnell Douglas updated their earlier YC-15 design, Boeing brought an updated version of the YC-14, and Lockheed doubled down with one aircraft based on the C-5 as well as an enlarged version of the C-141. Ultimately, the Air Force chose McDonnell Douglas, and gave their aircraft the designation C-17 Globemaster III, an name which pays homage to two earlier airlifters that both carried the nickname, the Douglas C-74 and C-124.

The McDonnell Douglas YC-15, which formed the basis of the C-17.

Delays in development and a shortage of funds almost led to the cancelation of the project once again, and caused to a four-year delay in the project. Finally, in 1985, a development contract was awarded, with delivery slated to begin in 1990 (McDonnell Douglas merged with Boeing in 1997). The C-17 is powered by four Pratt & Whitney F117 turbofan engines which give it a cruising speed of 515 mph and a range of up to 5,600 miles, depending on the cargo. It can carry up to 170,900 pounds of cargo, ranging from as many as 134 troops or one M1 Abrams main battle tank. The C-17 can also carry three M1126 Stryker infantry vehicles or six M1117 Guardian armored security vehicles. Thrust reversers that direct the jet exhaust upward reduce the dangers of ingesting foreign objects into the engines and give the C-17 a stopping distance of as little as 3,500 feet. During testing, a C-17 set 33 world records, including a record for STOL capability in which a C-17 took off in less than 1,400 ft, carried a payload of 44,000 pounds to altitude, and then landed in less than 1,400 ft. In 1998, the C-17 was awarded the Collier Trophy for achievement in aeronautics. The first C-17s entered service in 1993 and, when production ended in 2015, a total of 279 had been built. They remain in service with the US Air Force, the Royal Air Force, the Royal Australian Air Force and the Indian Air Force. (Top photo US Air Force; YC-17 photo by Steve Fitzgerald via Wikimedia Commons)


Short Takeoff

September 14, 2006 – The crash of USAF Thunderbird Number 6 during an air show at Mountain Home Air Force Base. Immediately after takeoff, Thunderbirds opposing solo pilot Captain Chris Stricklin attempted a Split S maneuver after incorrectly entering the mean-sea-level of the air base into his altimeter. Coming out of the maneuver too low, Stricklin ejected eight-tenths of a second before impact and suffered only minor injuries. His aircraft was destroyed. Following the crash investigation, procedures for the Split S were changed to add 1,000 ft more altitude before attempting the maneuver. Annotated video of the crash can be found here. Video with pilot radio can be found here. (US Air Force photo by Staff Sgt. Bennie J. Davis, III)

September 14-18, 1984 – Joe Kittinger makes the first solo transatlantic balloon flight. Kittinger, a retired colonel in the US Air Force, is best known for taking part in Project Manhigh and Project Excelsior, setting a world record in 1960 for a parachute jump from a balloon at 102,800 feet. After his retirement from the Air Force, Kittinger retained his interest in ballooning and made the first solo crossing of the Atlantic Ocean in Rosie O’Grady’s Balloon Of Peace. According to the Fédération Aéronautique Internationale (FAI), the governing body for air sports, the flight set the record for the longest gas balloon distance for its class at 3,544 miles during his flight from Maine to Montenotte, Italy. (Photo via the Joseph W. Kittinger Collection)

September 14, 1963 – The first flight of the Mitsubishi MU-2, a twin-turborop utility aircraft for civil and military use and one of the most successful aircraft to be produced in postwar Japan. Following the flights of the prototypes, Mitsubishi partnered with Mooney Aircraft in the United States to assemble the aircraft in their San Angelo, Texas factory, with major components shipped from Japan. The Japanese Self-Defense Forces became the only military operator of the MU-2, though they are also flown under government contract by the US Air Force to provide students with battle management training. A total of 704 were produced from 1963-1986. (Photo by Josef Tóth via Wikimedia Commons)

September 14, 1959 – The Soviet probe Luna 2 crashes onto the Moon. Between 1959, the Soviets carried out the Luna program which attempted to send a series of 24 robotic spacecraft to the moon during the Space Race with the United States. Luna 1, launched in January 1959, missed the Moon but, in the process, became the first spacecraft to orbit the sun. Luna 2, launched on September 12, 1959, did make it to the Moon, becoming the first man-made object reach the Moon and the first to land on another celestial body. Luna 2 carried instruments to measure the electron spectrum of the outer Van Allen Radiation Belt of the Earth, and also searched for radiation belts around the Moon. (Photo via RIA Novosti Archive)

September 14, 1917 – The first flight of the Fairey III, a reconnaissance biplane built during WWI to meet a specification for a carrier-based seaplane. The Fairey III, also known as the F.128, was powered by a Sunbeam Maori and had wings that could fold for carrier storage. Though seeing only limited service in WWI, development of the aircraft continued between the wars, and included a version with floats for operation from the surface of the water. Ultimately a very successful design, a total of 964 were built, and some were still in use in the early years of WWII. (Fleet Air Arm Archive photo)

September 15, 1978 – The death of Willy Messerschmitt. Messerschmitt began his design career building sail planes during WWI, then moved on to build small sport planes and small passenger planes. In 1936, he won the competition to provide the Luftwaffe with a new frontline fighter, the Bf 109, one of the war’s iconic fighters and an aircraft that would be produced in greater numbers than any other aircraft in history. After the war, Messerschmitt turned to the manufacture of sewing machines, prefab buildings, and the Messerschmitt Kabinenroller automobile. He also exported his aircraft design talents to other countries, designing the Hispano HA-200 jet trainer for Spain in 1952 before he was allowed to return to aircraft manufacturing, producing the Fiat G91 and the Lockheed F-104 Starfighter under license for the West German Luftwaffe. His final design was the Helwan HA-300, supersonic interceptor for the Egyptian air force. (Messerschmitt photo via Deutsches Bundesarchiv; Kabinenroller photo by G. Petermann via Wikimedia Commons; Bf 109 photo author unknown)

September 15, 1969 – The first flight of the Cessna Citation I, a small-sized business jet developed by the Wichita-based Cessna Aircraft Company and the first in a line of business jets. Development began in 1968, when Cessna chose to market a smaller bizjet that would compete with current turboprop aircraft instead of the established bizjet market. Unlike the competing Learjet 25, which was powered by turbojets, the Citation I was powered by Pratt & Whitney Canada JT15D turbofans and, though it was slower, the addition of thrust reversers made it compatible with shorter airfields. The Citation I was produced from 1969-1985, and a total of 689 were built. (Photo by Alan Radecki via Wikimedia Commons)

September 15, 1911 – The death of Édouard Nieuport, a French aviation pioneer and founder, along with his brother Charles, of the Société Anonyme Des Éstablissements Nieuport, better known simply as Nieuport. Édouard was known for his monoplane designs in an era when most manufacturers were producing biplanes, and he set speed records flying his own aircraft powered by engines of his own design. Though Édouard was killed in a flying accident in 1911, followed two years later by the death of his brother Charles, also in a flying accident, their company went on to be one of the major manufacturers of fighter aircraft in WWI. (Édouard Nieuport photo author unknown; Nieuport II.G photo by Nieuport)

September 16, 2013 – The first flight of the Bombardier CSeries (CS100), a narrow-body twin-engine medium-range regional airliner manufactured by Bombardier Aerospace of Canada. Following their unsuccessful takeover of Fokker in 1996, Bombardier considered a new regional jet, but instead chose to enlarge their existing successful line of CRJ regional jets. With the launch of the Embraer E-Jet line, as well as similar offerings from Airbus and Boeing, Bombardier revisited the idea and developed their first regional jet with 5-across seating and engines in pods under the wing rather than at the rear of the aircraft. After a lengthy test program, the first CS100 was delivered to Swiss Global Air Lines in June 2016, with Bombardier having firm orders for 123 more CS100 airliners and 235 of the larger CS300. (Photo by Alexandre Gouget via Wikimedia Commons)

September 16, 1959 – The first flight of the North American Sabreliner, a mid-sized business jet developed by North American Aviation for both the military and civilian market. Development began as part of the US Air Force’s Utility Trainer Experimental (UTX) program to find an aircraft that could function both as a utility transport and a combat readiness trainer. The name Sabreliner was chosen due to the resemblance of the tail and wings to the North American F-86 Sabre fighter. The US military accepted the Sabreliner as the T-39, while the civilian version was originally marketed as the Series 40, though subsequent variants saw the 60, 70, 75 and 80. The Navy also adopted the T-39 for radar operator training. More than 800 Sabreliners were produced from 1959-1982. (US Air Force photo)

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