Samstag, 28. Februar 2015

Curtiss H-75 Hawk IIAF - Airfix 1/72

The Curtiss P-36 Hawk, also known as the Curtiss Hawk Model 75, was an American-designed and built fighter aircraft of the 1930s and 40s. A contemporary of both the Hawker Hurricane and Messerschmitt Bf 109, it was one of the first of a new generation of combat aircraft—a sleek monoplane design making extensive use of metal in its construction and powered by a powerful radial engine.

 Perhaps best known as the predecessor of the Curtiss P-40 Warhawk, the P-36 saw little combat with the United States Army Air Forces during World War II. It was nevertheless the fighter used most extensively and successfully by the French Armee de l'air during the Battle of France. The P-36 was also ordered by the governments of the Netherlands and Norway, but did not arrive in time to see action over either country, before both were occupied by Nazi Germany. The type was also manufactured under license in China, for the Republic of China Air Force, as well as in British India, for the Royal Air Force (RAF) and Royal Indian Air Force (RIAF).
Axis and co-belligerent air forces also made significant use of captured P-36s. Following the fall of France and Norway in 1940, several dozen P-36s were seized by Germany and transferred to Finland; these aircraft saw extensive action with the Ilmavoimat (Air Force) against the Soviet Air Forces. The P-36 was also used by Vichy French air forces in several minor conflicts; in one of these, the Franco-Thai War of 1940–41, P-36s were used by both sides.
From mid-1940, some P-36s en route for France and the Netherlands were diverted to Allied air forces in other parts of the world. The Hawks ordered by the Netherlands were diverted to the Dutch East Indies and later saw action against Japanese forces. French orders were taken up by British Commonwealth air forces, and saw combat with both the South African Air Force (SAAF) against Italian forces in East Africa, and with the RAF over Burma. Within the Commonwealth, the type was usually referred to as the Curtiss Mohawk.
With around 1,000 aircraft built by Curtiss itself, the P-36 was a major commercial success for the company. It also became the basis not only of the P-40, but two other, unsuccessful prototypes: the YP-37 and the XP-42.

At the beginning of the WWII, Iran remained a neutral country. However, in August 23, 1941 (3 Shahrivar, 1320), during the heat of the WWII Iranian neutrality was broken, and Iran was attacked from the air and the sea. British from the South, and the Russians from the North.
( was Called Operation "Y" under the command of Lt. Gen. E.P.Quinan).
The young Iranian Air Force, which had just begun to build its foundation, was in no condition to withstand such a heavy attack. The Allied Forces of Britain and Russia took control of two Iranian air bases in Tehran.
The British took over Dooshan Tappeh IIAF complex including Shahbaz factories and the Russians took over control of Ghale Morghi Air Base.
The invaders closed the IIAF Technical Officers Academy, the pilot training school, the maintenance school, and six air bases in the country. Personnel were dismissed from service and most of the aircraft were dismantled ( Some Air Force personnel witnessed that our Aircrafts were cut into half by British troops to make them useless).
From 15 Curtiss H75 A-9 Hawk Aircrafts that Iran had purchased from USA and they were delivered on May 1941, 10 were ready to fly (SN 15252 to 15261 and other 5 were still in boxes). The British also took all these Aircraft and shipped them to India!!!
The young Air Force was reduced to practically nothing! Iranian Air Force that had been built by H.I.M. Reza Shah The Great had been all but destroyed by the British and Russian forces during their occupation from 1941 to 1946. Reza Shah, the founder of the Air Force was forced to resign, as part of the cease-fire condition imposed by the British. Eventually, his son, Mohammad Reza Pahlavi became the Shah of Iran.
When the war ended the British left Iran, but the Russians refused to leave and remained in control of Northern Iran.
In 1946 (21 Azar, 1325), encouraged by the political pressure applied by American Government, the Army and Air Force, under the direct command of the young Mohammad Reza Shah (Only 40 Days After receiving his Pilot Certificate, and having less than 100 flying hours, Shah of Iran made four Reconnaissance Flight over enemy territory, this was the first time that the leader of a country would actually participate and fly over war zone.) drove the Red Russians and the "puppet" government of "Pishehwari" out of Iran. 

From Wikipedia, the free encyclopedia & History of the Imperial Iranian Air Force


Dienstag, 17. Februar 2015

Vultee XP-54 Swoose Goose - Execuform 1/72 (Vacu-Kit)

The Vultee XP-54 Swoose Goose was a prototype fighter built by the Vultee Aircraft Company for the United States Army Air Forces (USAAF).

Vultee had submitted a proposal in response to a U.S. Army Air Corps request for an unusual configuration. The Vultee design won the competition, beating the Curtiss XP-55 Ascender and the Northrop XP-56 Black Bullet. Vultee designated it Model 84, a descendant of their earlier Model 78. After completing preliminary engineering and wind tunnel tests, a contract for a prototype was awarded on 8 January 1941. A second prototype was ordered on 17 March 1942. Although it appeared to be a radical design, its actual performance was lackluster and the project was subsequently canceled.

The XP-54 was designed with a pusher engine in the aft part of the fuselage. The tail was mounted rearward between two mid-wing booms, with the 12-ft propeller between them. The design included a "ducted wing section" developed by the NACA that enabled installation of cooling radiators and intercoolers in the inverted gull wing. The Pratt & Whitney X-1800 engine was initially proposed as the powerplant but after its development was discontinued, the liquid-cooled Lycoming XH-2470 was substituted.
In September 1941, the XP-54 mission was changed from low altitude to high altitude interception. Consequently, a turbo-supercharger and heavier armor had to be added, and the estimated empty weight increased from 11,500 to 18,000 lb (5,200 to 8,200 kg).

 The XP-54 was unique in numerous ways. The pressurized cockpit required a complex entry system: the pilot’s seat acted as an elevator for cockpit access from the ground. The pilot lowered the seat electrically, sat in it, and raised it into the cockpit. Bail-out procedure was complicated by the pressurization system and necessitated a downward ejection of the pilot and seat in order to clear the propeller arc. Also, the nose section could pivot through the vertical, three degrees up and six degrees down. In the nose, two 37 mm T-9 cannon were in rigid mounts while two .50 cal machine guns were in movable mounts. Movement of the nose and machine guns was controlled by a special compensating gun sight. Thus, the cannon trajectory could be elevated without altering the flight attitude of the airplane. The large nose section gave rise to its whimsical nickname, the Swoose Goose, inspired by a song about Alexander who was half swan and half goose: "Alexander was a swoose."

Flight tests of the first prototype, 41-1210, began on 15 January 1943. Initial trials showed performance substantially below guarantees. At the same time, development of the XH-2470 engine was discontinued and, although it appeared possible to substitute the Allison V-3420 engine without substantial airframe changes, the projected delay and costs resulted in a decision not to consider production buys.
The prototypes continued to be used in an experimental program until problems with the Lycoming engines and lack of spare parts caused termination. The second prototype, 42-108994 (but mistakenly painted as 42-1211) equipped with an experimental GE supercharger, only made one flight before it was relegated to a "parts plane" in order to keep the first prototype in the air.

From Wikipedia, the free encyclopedia