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Miller-Bohannon JM-2 Special

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The Miller-Bohannon JM-2 Special , named Pushy Galore , is a one-of-a-kind American homebuilt Formula One racing and record-setting aircraft. It was based upon Jim W Miller's Miller JM-2 design, highly modified by Bruce Bohannon.

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75-448: Bohannon began construction of Pushy Galore in 1988 and first flew it in the early part of 1989, first entering it in a race in June 1989. The aircraft is of three-surface configuration, having a cantilever mid-wing , a single-seat enclosed cockpit under a bubble canopy , fixed main tricycle landing gear with a retractable nose wheel, a t-tail and a nose-mounted canard . It is powered by

150-473: A canard aircraft , to allow natural static pitch stability in normal flight, the foreplane must provide lift. Also, in order for the aircraft to have safe stall characteristics the foreplane must stall before the main wing, pitching the aircraft down and allowing the aircraft to recover. This means that a safety margin must be used on the main wing area so that its maximum lift coefficient and wing loading are never attained in practice. This in turn means that

225-431: A capacity of one hundred and more passengers" would soon become a reality. It was after the war, however, that (besides converting some of his large wartime bombers into airliners ) Caproni began designing a huge and ambitious passenger flying boat ; he first took out a patent on a design of this kind on February 6, 1919. The idea of a large multi-engined flying boat designed for carrying passengers on long-range flights

300-408: A conventional aircraft this pitch trim force is applied by a tailplane . On many modern designs, the wing centre of pressure is normally aft of the centre of gravity, so the tailplane must exert a downward force. Any such negative lift generated by the tail must be compensated by additional lift from the main wing, thus increasing wing area, drag, and weight requirements. On a three-surface aircraft,

375-469: A conventional layout. Caproni Ca.60 The Caproni Ca.60 Transaereo , often referred to as the Noviplano (nine-wing) or Capronissimo , was the prototype of a large nine-wing flying boat intended to become a 100-passenger transatlantic airliner . It featured eight engines and three sets of triple wings. Only one example of this aircraft, designed by Italian aviation pioneer Gianni Caproni ,

450-458: A minimum of total surface area to the slipstream; thus reducing surface drag for speed and fuel efficiency. Several reviews compare the Avanti's top speed and service ceiling to that of lower-end jet aircraft, and report significantly better fuel efficiency at cruise speed. Piaggio attributes this performance in part to the layout of the aircraft, claiming a 34% reduction in total wing area compared to

525-539: A modified McDonnell Douglas F-15 , the F-15 STOL/MTD , in 1988 but these designs were not followed up. In the Soviet Union a Sukhoi Su-27 modified with canard foreplanes flew in 1985 and derivatives of this design became the only military three-surface types to enter production. Also in 1979, Piaggio began design studies on a three-surface civil twin turboprop which, in collaboration with Learjet , would emerge as

600-580: A number of subsequent production variants including the naval Su-33 (Su-27K), some Su-30s, the Su-35 and the Su-37. The Chinese Shenyang J-15 also inherits the configuration of the Su-33. The McDonnell Douglas F-15 STOL/MTD was an F-15 airframe modified with canard foreplanes and thrust vectoring, designed to demonstrate these technologies for both STOL performance and high manoeuvrability. The three-surface configuration

675-578: A single rear-mounted engine in pusher configuration . The aircraft is made from welded steel tubing covered in molded carbon fiber . As required by the Formula One rules, its engine is a 100 hp (75 kW) Continental O-200A . Only one example was ever built. Bohannon entered the aircraft in the Reno Air Races in 1994, qualifying in third place in the Formula One class, with a speed of 236.153 mph (380.051 km/h). In 1995 Bohannon flew

750-560: A three-surface configuration, often in conjunction with thrust vectoring . This is typically intended to enhance control and manoeuvrability, especially at very high angles of attack beyond the stall point of the main wing. Some advanced combat manoeuvres such as Pugachev's Cobra and the Kulbit were first performed on Sukhoi three-surface aircraft. The experimental Grumman X-29 was of basic "tail-first" canard configuration, with unusual forward-swept wings and strakes extending rearwards from

825-429: Is claimed to reduce total aerodynamic surface area compared to the conventional and canard configurations, thus enabling drag and weight reductions. On most aircraft, the wing centre of pressure moves forward and backward according to flight conditions. If it does not align with the centre of gravity , a corrective or trim force must be applied to prevent the aircraft pitching and thus to maintain equilibrium. On

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900-543: Is positioned ahead of the centre of gravity, so its lift moment acts in the same direction as any movement in pitch. If the aircraft is to be naturally stable, the foreplane's size, lift slope and moment arm must be chosen so that it does not overpower the stabilizing moment provided by the wing and tailplane. Stability constraints thus limit the foreplane's volume ratio (a measure of its effectiveness in trim and stability terms), which may in turn limit its ability to share pitch trim forces as described above. The minimum size of

975-505: Is usually the largest, while the functions of the fore and aft planes may vary between types and may include lift, control and/or stability. In civil aircraft the three surface configuration may be used to give safe stalling characteristics and short takeoff and landing (STOL) performance. It is also claimed to allow minimizing the total wing surface area, reducing the accompanying skin drag. In combat aircraft this configuration may also be used to enhance maneuverability both before and beyond

1050-550: The AirVenture Museum . Bohannon later went on to set many more time-to-climb records in his successor to Pushy Galore, the Bohannon B-1 . Data from AirVenture Museum General characteristics Performance Three-surface aircraft A three-surface aircraft or sometimes three-lifting-surface aircraft has a foreplane , a central wing and a tailplane . The central wing surface always provides lift and

1125-537: The Caproni Ca.32 , Ca.33 , Ca.36 and Ca.40 . The end of the conflict, however, caused a dramatic decrease in the demand for bombers in the Italian military. As a result, Caproni, like many other entrepreneurs of the time, directed his attention to the civil aviation market. As early as 1913, Caproni, then aged 27, had said during an interview for the Italian sports newspaper La Gazzetta dello Sport that "aircraft with

1200-603: The Peterson Katmai , entered production. A broadly similar approach is taken by the 1988 Eagle-XTS and its derivatives, the Eagle 150 series. Around 1979, military jet designers began studying three-surface configurations as a way to provide enhanced manoeuvrability and control, especially at low speeds and high angles of attack such as during takeoff and combat. In the United States the experimental Grumman X-29 flew in 1984 and

1275-483: The Piaggio P.180 Avanti . This type first flew in 1986 and entered service in 1990, with production continuing today. In the Avanti, the three-surface configuration is claimed to significantly reduce wing size, weight and drag compared to the conventional equivalent. Two experimental aircraft adopting this configuration were subsequently built by Scaled Composites under the lead of Burt Rutan and flown in 1988. The Triumph

1350-430: The cabin , hung below three sets of wings in tandem , each composed of three superimposed aerodynamic surfaces : one set was located fore of the hull, one aft and one in the center (a little lower than the other two). The wingspan of each of the nine wings was 30  m (98  ft 5  in ), and the total wing area was 750.00  m²  (8073  ft² ); the fuselage was 23.45 m (77 ft) long and

1425-469: The cruise altitude had been reached and only restarted in case of emergency. The seaplane configuration assured the capability of performing relatively safe and easy emergency water landings on virtually any water surface calm and large enough. Moreover, Caproni intended to improve the comfort of the passengers by increasing the cruise altitude, which he meant to achieve with turbochargers and variable-pitch propellers (such devices could compensate for

1500-793: The Caproni firm in particular; his historical sensibility meant that several parts of the Transaereo, retrospectively known as the Caproni Ca.60, survived: the two outriggers, the lower front section of the main hull, a control and communication panel and one of the Liberty engines were spared and, after following the Caproni Museum in all its whereabouts between its foundation in 1927 and its move to its current location in Trento in 1992, they were displayed together with

1575-507: The FT-10 Cruisaire. It is possible to achieve such a soft stall with a pure canard design, but it is then difficult to control the pitching and oscillations can develop as the foreplane repeatedly lifts the nose, stalls and recovers. Also, care must be taken in the design that the turbulent wake from the stalled foreplane does not in itself disturb the airflow over the main wing sufficiently to cause significant loss of lift and cancel out

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1650-403: The Transaereo had crashed. He later commented, "So the fruit of years of work, an aircraft that was to form the basis of future aviation, all is lost in a moment. But one must not be shocked if one wants to progress. The path of progress is strewn with suffering." At the time, the accident was blamed on two concurrent causes. First, the wake of a steamboat that was navigating on the lake close to

1725-463: The Transaereo. The flight control system was composed of ailerons (fitted on each single wing) and rudders , even if the aircraft didn't have a tail assembly in the traditional sense and, in particular, didn't have a horizontal stabilizer . Roll (the aircraft's rotation about the longitudinal axis) was controlled in a completely conventional way by the differential action of port and starboard ailerons; pitch (the aircraft's rotation about

1800-531: The aircraft from pitching up excessively. More taxiing tests were successfully carried out on February 11. On February 12 or March 2, 1921, the bow of the aircraft loaded with 300 kg (660 lb) of ballast, the Transaereo reached the speed of 80 km/h (43 kn; 50 mph) and took off for the first time. During the brief flight it proved stable and maneuverable, in spite of a persisting tendency to climb. The second flight took place on March 4. Semprini (according to what he later recalled) accelerated

1875-406: The aircraft on the roll axis; Caproni also expected the Transaereo to be very stable on the pitch axis because of the tandem-triplane configuration, for the aft wing set was supposed to act as a very big and efficient stabilizer; he said that the huge aircraft could "be flown with just one hand on the controls." Caproni had patented this particular control system on September 25, 1918. The aircraft

1950-415: The aircraft to 100 or 110 km/h (54–59 kn, 62–68 mph), pulling the yoke toward himself; suddenly the Transaereo took off and started climbing in a sharp nose-up attitude; the pilot reduced the throttle , but then the aircraft's tail started falling and the aircraft lost altitude, out of control. The tail soon hit the water and was rapidly followed by the nose of the aircraft, which slammed into

2025-480: The aircraft to 9,000 m (29,528 ft) in 41 minutes and 35 seconds, setting class world time-to-climb, absolute altitude and altitude in horizontal flight records. In July 1996 at AirVenture in Oshkosh, Bohannon set a third FAI class time-to-climb record of 3,000 m (9,843 ft) in three minutes and eight seconds. After the climb records were set in 1996, Bohannon retired the aircraft and in 1998 donated it to

2100-538: The aircraft to second place in the Formula One Gold championship race at Reno, Nevada . Bohannon also used the aircraft to set world time-to-climb records in the Fédération Aéronautique Internationale (FAI) C-1.A class. At AirVenture 1994 Bohannon set a new world time-to-climb record, climbing to 6,000 m (19,685 ft) in 12 minutes and 50 seconds. In January 1996, Bohannon climbed

2175-402: The aircraft was scheduled to be put in the water for the first time, and a cameraman had been hired to shoot some sequences of the aircraft floating on the lake. Because of the low level of the lake and of some difficulties related to the slipway that connected the hangar with the surface of the lake, the flying boat could not reach the water. After receiving De Siebert's authorization, the slipway

2250-413: The area where the Transaereo was accelerating was thought to have interfered with the takeoff. Second, test pilot Semprini was blamed for having kept pulling the yoke trying to gain altitude while he should have performed corrective maneuvers, for example lowering the nose to let the huge aircraft gain speed. Another theory suggests the aforementioned boat was a ferry loaded with passengers and Semprini (who

2325-445: The back of the fuselage when, upon takeoff, the Transaereo suddenly pitched up. With the tail burdened by this additional load and a shift in the center of gravity , the aircraft became uncontrollable and the nose lifted more and more, until the Transaereo stalled and violently hit the water tail first. Because the photographer was on board the same car as Caproni, no photos exist of the takeoff, flight or crash, but many were shot of

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2400-513: The company during the Great War, were assembled here. At the end of the year, the construction yard was visited by United States Ambassador to Italy Robert Underwood Johnson , who admired Caproni's exceptional aircraft. The press affirmed that the aircraft would be able to begin test flights in January 1921, and added that, were the tests successful, Italy would swiftly gain international supremacy in

2475-517: The concept. After discussing with De Siebert and Ivanoe Bonomi (who had been the Ministry of War until shortly before), Caproni was convinced he could build a 1/3 scale model and Bonomi promised that, had he won the elections, his cabinet would grant him all the financial support he needed. However, even though Bonomi actually became Prime Minister in July, more urgent political priorities ultimately caused

2550-454: The contrary, he thought that a new generation of airliners (featuring extended range and increased payload capacity, the latter in turn allowing a reduction in cost per passenger) had to supersede the converted leftovers from the war. In spite of criticism from some important figures in Italian aviation, especially aerial warfare theorist Giulio Douhet , Caproni started designing a very innovative aircraft, which he patented in 1919. Caproni

2625-526: The equivalent two-surface aircraft, so reducing both weight and drag. Minimum area in cruise can be further reduced through the use of conventional high-lift devices such as flaps, allowing a three-surface design to have minimum surface area at all points in the flight envelope. Examples of reduced-area three-surface aircraft include the Piaggio P.180 Avanti , and the Scaled Composites Triumph and Catbird . These aircraft were designed to expose

2700-513: The field of civil aerial transport. On January 10, 1921 the forward engines and nacelles were tested, and no dangerous vibrations were recorded. On January 12 two of the aft engines were also successfully tested. On the fifteenth, Caproni forwarded his request for permission to undertake test flights to the Inspector General of Aeronautics, General Omodeo De Siebert. The Transaereo was a large flying boat , whose main hull , which contained

2775-424: The forward engine group, these were pulling , while in the aft engine group, they were pushing . All nacelles had radiators for the cooling liquid . Each of the two fore side engines was connected to the central wing set and to the corresponding aft engine thanks to a truss boom with a triangular section. The two central nacelles also housed an open-air cockpit , for one flight engineer each, who controlled

2850-553: The high angles of attack and accompanying dangers of stalling required by conventional STOL designs. The aircraft was evaluated by the US Army. Robertson's system was commercialised as the Wren 460 , a modified Cessna light aircraft. This in turn was later licensed and produced during the 1980s as the Peterson 260SE and with the foreplane modification only as the 230SE. In 2006 a ruggedised variant,

2925-402: The hull and the fuselage was partly submerged, while the central and aft wing sets got damaged and partly collapsed in the water. The possibility of repairing the Transaereo was remote. After the accident, only the metallic parts and the engines were still usable. Almost all wooden parts would have to be rebuilt. The cost of the repairs, according to Caproni's own estimate, would be one-third of

3000-468: The lifting wings of an aircraft is determined by: the weight of the aircraft, the force required to oppose the negative lift produced by the horizontal stabilizer, the targeted take off and landing speeds, and the coefficient of lift of the wings. Most modern aircraft use trailing edge flaps on the main wing to increase the wings lift coefficient during takeoff and landing; thus allowing the wing to be smaller than it would otherwise need to be. This may reduce

3075-481: The loss of power output of the engines at high altitude). The construction of the model 3000, or Transaereo, began in the second half of 1919. The earliest reference to this event is found in a French daily newspaper of August 10, 1919, and perhaps the first parts were built in the Caproni factory of Vizzola Ticino . In September an air fair took place at the Caproni factory in Taliedo , not far from Milan , during which

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3150-413: The main wing must be increased in size. On a three-surface aircraft, the tailplane acts as a conventional horizontal stabiliser . In the stall condition, even if the main wing is stalled the tailplane can provide a pitch-down moment and allow recovery. The wing may thus be used up to its maximum lift coefficient, an advantage that may translate into a reduction of its area and weight. A lifting foreplane

3225-409: The main wing must be large enough to not only lift the aircraft's remaining weight at takeoff but also to provide adequate safety margin to prevent stalling. On a three-surface aircraft, neither of these handicaps is present and the main wing can be reduced in size, so also reducing weight and drag. It is claimed that the total area of all wing surfaces of a three-surface aircraft can be less than that of

3300-410: The main wing roots. Movable flaps at the ends of the strakes effectively made it a three-surface design. The X-29 demonstrated exceptional high-angle of attack manoeuvrability. A more straightforward three-surface design is seen in several variants of the otherwise conventional Sukhoi Su-27 . Following the successful addition of canard foreplanes to a development aircraft, these were incorporated into

3375-442: The most important seaplane designers of the time, create the hull and floats, the hydrodynamic surfaces that connected them and the two small hydrofoils located close to the nose of the aircraft: Guidoni designed new and innovative floats for the Transaereo to reduce dimensions and weight. The Transaereo was taken out of its hangar for the first time on January 20, 1921, and on that day it was extensively photographed. On January 21,

3450-413: The negative pitching moment created by the trailing edge flaps. This, in turn, means that the main wing must be somewhat larger than it would otherwise have to be to balance the larger negative lift produced by the larger horizontal stabilizer. On a canard aircraft the foreplane can provide positive lift at takeoff, reducing some of the down force the rear stabilizer would otherwise have to create. However,

3525-529: The new, ambitious project was heavily publicized. Later in September, Caproni experimented with a Caproni Ca.4 seaplane to improve his calculations for the Transaereo. In 1920, the huge hangar where most of the construction of the Transaereo was to take place was built in Sesto Calende , on the shore of Lake Maggiore . The several parts built by Caproni's subcontractors, many of whom had already collaborated with

3600-468: The nose-down pitching moment. In the three-surface design the third, tail surface does not stall and provides better controllability. In the 1950s James Robertson developed his experimental Skyshark. This was a broadly conventional design but with a variety of features, including a small canard foreplane, intended to give not only a safe stall but good Short takeoff and landing (STOL) performance. The foreplane allowed STOL performance to be achieved without

3675-471: The outbreak of the First World War in 1914, the main wing with smaller rear tail surface had become the conventional configuration and few three surface types would be flown for many years. The Fokker V.8 of 1917 and Caproni Ca.60 Noviplano of 1921 were both failures. In 1920s George Fernic developed the idea of two lifting surfaces in tandem, together with a conventional tailplane. The small foreplane

3750-421: The passenger cabin floor, so that the shoulders and heads of the pilots protruded through the roof. The flight deck could be reached from inside the fuselage by a ladder. Besides the main hull, the aircraft was fitted with two side floats located under the central wing set, acting as outriggers which stabilized the aircraft during static floating, takeoff and landing . Caproni had Alessandro Guidoni , one of

3825-463: The pitch trim forces can be shared, as needed in flight, between the foreplane and tailplane. Equilibrium can be achieved with lift from the foreplane rather than downforce from the tailplane. Both effects, the reduced downforce and the extra lifting force, reduce the load on the main wing. The Piaggio P.180 Avanti has flaps on both its forward wing and main wing. Both flaps deploy in concert to maintain pitch neutrality for take-off and landing. On

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3900-418: The power output of the engines in response to the orders given by the pilots via means of a complex system of lights and indicators located on electrical panels. The fuel tanks were located in the cabin roof, close to the central wing set. Fuel reached the engines thanks to wind-driven fuel pumps . The main fuselage ran the entire length of the plane, below most of the wing structure. The passenger cabin

3975-459: The project of the Transaereo to be abandoned. Although it was not successful, the Caproni Ca.60 is considered "one of the most extraordinary aircraft ever built." Most of the damaged structure of the wreck was lost after the Transaereo project was eventually abandoned. Caproni, however, was convinced of the importance of preserving and honoring the historical heritage related to the birth and early development of Italian aviation in general, and to

4050-663: The rest of the permanent collection in the main exhibition hall of the museum in 2010. A section of one of the two triangular truss-booms also survived, as well as one of the hydrofoils that connected the main hull and the outriggers. These fragments are on display at the Volandia aviation museum, in the Province of Varese , hosted in the former industrial premises of the Caproni company at Vizzola Ticino . Data from Guida agli Aeroplani di Tutto il Mondo, Aeroplani Caproni General characteristics Performance The Caproni Ca.60

4125-437: The stall, often in conjunction with vectored thrust . An early designation used in 1911 was "three plane system". The Fernic designs of the 1920s were referred to as "tandem". While there are indeed two lifting wing surfaces in tandem, the tailplane forms a third horizontal surface. During the pioneer years of aviation a number of aircraft were flown with both fore and aft auxiliary surfaces. The issue of control vs. stability

4200-409: The surface, breaking the fore part of the hull. The fore wing set collapsed in the water together with the nose of the aircraft, while the central and the aft wing sets, together with the tail of the aircraft, kept floating. The pilot and the flight engineers escaped the wreck unscathed. Caproni, coming from Vizzola Ticino by automobile, was delayed, and only arrived on the shore of Lake Maggiore after

4275-485: The tests had to be postponed again. On February 9, finally, the Transaereo was put in the water its engines running smoothly and it started taxiing on the surface of the lake. The pilot was Federico Semprini, a former military flight instructor who was known for having once looped a Caproni Ca.3 heavy bomber. He would be the test pilot in all the subsequent trials of the Transaereo; no tests were going to be performed with more than one pilot on board. Always keeping on

4350-424: The total cost of building the prototype, but he doubted the company's resources would be sufficient to sustain such a financial effort. After initial discouragement, however, on March 6 Caproni was already considering design modifications to carry on the project of a 100-passenger transatlantic flying boat. He was sure that the Transaereo was a promising machine, and decided to build a 1/4 scale model to keep on testing

4425-407: The transverse axis) was controlled by the differential action of fore and aft ailerons, since the aircraft didn't have elevators ; four articulated vertical surfaces located between the wings of the aftmost wing set acted as vertical stabilizers and rudders controlling the yaw (the aircraft's rotation about the vertical axis). Wings had a positive dihedral angle , which contributed to stabilizing

4500-406: The water surface, the aircraft made some turns, then accelerated simulating a takeoff run, then made other maneuvers in front of Gianni Caproni and other important representatives of the Italian aviation in the 1920s: Giulio Macchi and Alessandro Tonini of Nieuport-Macchi , Raffaele Conflenti of SIAI . The tests were soon interrupted by the worsening of the weather conditions, but their outcome

4575-438: The weight of the wing, and it always reduces the surface area of the wing. The reduction of surface area proportionately reduces skin drag at all speeds. A drawback of the use of trailing edge flaps is that they produce significant negative pitching moment when in use. In order to balance this pitching moment the horizontal stabilizer must be somewhat larger than it would otherwise be, so that it can produce enough force to balance

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4650-452: The whole structure, from the bottom of the hull to the top of the wings, was 9.15 m (30 ft) high. The empty weight was 14,000  kg (30,865  lb ) and the maximum takeoff weight was 26,000 kg (57,320 lb). Each set of three wings was obtained by the direct reuse of the lifting surfaces of the triplane bomber Caproni Ca.4 ; after the end of the war several aircraft of this type were cannibalized in order to build

4725-406: The wreck. The flying boat had sustained heavy damage in the crash, but the rear two-thirds of the fuselage and the central and aft wing sets were almost intact. However, the Transaereo had to be towed to shore. The crossing of the lake, performed thanks to a boat that may have been the same that had interfered with the takeoff, further damaged the aircraft: a considerable quantity of water leaked in

4800-513: Was a twin-turbofan very light jet aircraft designed for Beechcraft . Flight testing validated the targeted performance range. The Catbird was a single-engined propeller-driven aircraft, envisioned by Rutan as a replacement for the Beechcraft Bonanza . It holds the world record for speed over a closed circuit of 5,000 km (3,100 mi) without payload of 334.44 km/h (207.81 mph) set in 2014. Some advanced jet aircraft have

4875-486: Was aware of the safety problems with passenger flights, the root of Douhet's criticism. So, he concentrated on both improving the aircraft's reliability and minimizing the damage that could be caused by possible accidents. First of all, he conceived his large seaplane as a multi-engine aircraft featuring enough motors to allow it to keep flying even in case of the failure of one or more of them. He also considered (but then discarded) "backup engines" that could be shut off once

4950-449: Was built by the Caproni company. It was tested on Lake Maggiore in 1921: its brief maiden flight took place on February 12 or March 2. Its second flight was March 4; shortly after takeoff, the aircraft crashed on the water surface and broke up upon impact. The Ca.60 was further damaged when the wreck was towed to shore and, in spite of Caproni's intention to rebuild the aircraft, the project

5025-628: Was considered, at the time, rather eccentric. Caproni thought, however, that such an aircraft could allow faster travel to remote areas than ground or water transport, and that investing in innovative aerial means would be a less expensive strategy than improving traditional thoroughfares. He affirmed that his large flying boat could be used on any route, within a nation or internationally, and he considered operating it in countries with large territories and poor transport infrastructures, such as China . Caproni believed that, to attain these objectives, rearranging wartime aircraft would not be sufficient. On

5100-411: Was enclosed, and featured wide panoramic windows. Travelers were meant to sit in pairs on wooden benches that faced each other—two facing forward and two backwards. It featured a lavatory at the rear end of the fuselage. An open-air cockpit was positioned above and slightly behind the forward windows. It accommodated a pilot in command and a co-pilot side-by-side. Its floor was raised above

5175-418: Was highly loaded and as the angle of attack increased it was designed to stall first, causing the nose to drop and allowing the aircraft to recover safely without stalling the main wing. This "soft" stall provides a level of safety in the stall which is not usually present in conventional designs. The Fernic T-9 , a three-surface monoplane, flew in 1929. Fernic was killed in an accident while flying its successor

5250-455: Was lengthened on January 24, and then again on 28. Operations were carried on among problems and obstacles until February 6, when Caproni was informed that 30 wing ribs had broken and needed to be repaired before the beginning of test flights. He was infuriated, and kept his employees awake through the night to allow the tests to begin on February 7. The ribs were fixed, but then a starter was found broken, causing Caproni's frustration, so that

5325-428: Was only performing some taxiing trials, for he did not mean to take off before Caproni's arrival on the spot) was suddenly compelled to take off, in spite of the insufficient speed, to avoid a collision. According to more recent theories, the cause of the accident was probably the sandbags that had been placed in the aircraft to simulate the weight of passengers: not having been fastened to the seats, they may have slid to

5400-618: Was poorly understood and typically pitch control was on the front surface with the rear surface also lifting, leading to instability in pitch. The Kress Drachenflieger of 1901 and Dufaux triplane of 1908 had insufficient power to take off. More successful types included the Voisin-Farman I (1907) and Curtiss No. 1 (1909). The Wright Brothers too experimented on the basic Flyer design in an effort to obtain both controllability and stability, flying it at various times in first canard, then three surface and finally conventional configurations. By

5475-425: Was positive. The aircraft had proved responsive to the controls, maneuverable and stable; it seemed to be too light towards the bow and at the end of the day some water was found to have leaked inside the fuselage, but Caproni was satisfied. On the next day, after reconsidering some of his calculations, Caproni decided to load the bow of the Transaereo with ballast before carrying out further tests, in order to keep

5550-644: Was powered by eight Liberty L-12 V12 engines built in the United States . Capable of producing 400 hp (294 kW ) each, they were the most powerful engines produced during the First World War. They were arranged in two groups of four engines each: One group at the foremost wing set, and one at the aftmost wing set. Each group featured a central nacelle, containing two engines in a push-pull configuration , all with four-blade propellers . To either side were single-engine nacelles, with two-blade propellers. In

5625-529: Was soon abandoned because of its excessive cost. The few surviving parts are on display at the Gianni Caproni Museum of Aeronautics and at the Volandia aviation museum in Italy. Gianni Caproni became a famous aircraft designer and manufacturer during the First World War ; his Caproni aviation company had major success, especially in the field of heavy multi-engine bombers , building aircraft such as

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