Tag Archives: Kawasaki Kokuki K.K.

22 March 1948

Tony LeVier in the cockpit of Lockheed TP-80C-1-LO 48-356, the prototype T-33A Shooting Star two-place trainer.
Tony LeVier in the cockpit of Lockheed TP-80C-1-LO 48-356, the prototype T-33A Shooting Star two-place trainer. (Jet Pilot Overseas)

22 March 1948: Just over one year since being injured when the prototype P-80A was cut in half by a disintegrating turbojet engine, Lockheed test pilot Anthony W. (“Tony”) LeVier made the first flight of the prototype TP-80C-1-LO, serial number 48-356, a two-place jet trainer. The airplane was redesignated TF-80C Shooting Star on 11 June 1948 and to T-33A, 5 May 1949.

Adapted from a single-seat P-80C Shooting Star jet fighter, Lockheed engineers added 38.6 inches (0.980 meter) to the fuselage forward of the wing for a second cockpit, instrumentation and flight controls, and another 12 inches (0.305 meter) aft. A more powerful engine, an Allison J33-A-23 with 4,600 pounds of thrust, helped offset the increased weight of the modified airplane. Internal fuel capacity decreased 72 gallons (273 liters) to 353 (1,336 liters).

The Lockheed T-33A Shooting Star is 37.72 feet (11.50 meters) long, with a wingspan of 37.54 feet (11.44 meters), and overall height of 11.67 feet (3.56 meters). The wings a total area of 234.8 square feet (21.8 square meters). They have an angle of incidence of 1° with -1° 30′ of twist and 3° 49.8′ dihedral. The “T-Bird” has a basic weight of 9,637 pounds (4,371 kilograms), and gross weight of 15,280 pounds (6,931 kilograms).

Lockheed TP-80C-1-LO 48-356 prototype, with P-80C-1-LO Shooting Star 47-173, at Van Nuys Airport, California. (Lockheed Martin)

Originally produced with the J35-A-23 engine, the T-33 fleet was later standardized with the J35-A-35 engine. The J33 was a development of an earlier Frank Whittle-designed turbojet. It used a single-stage centrifugal-flow compressor, eleven combustion chambers and a single-stage axial-flow turbine section. The J33-A-35 had a Normal Power rating of 3,900 pounds of thrust (17.348 kilonewtons) at 11,250 r.p.m. (96%), and 4,600 pounds (20.462 kilonewtons) at 11,750 r.p.m. (100%). It was 107 inches (2.718 meters) long, 50.5 inches (1.283 meters) in diameter, and weighed 1,820 pounds (826 kilograms). The engine was 16 feet, 3.5 inches (4.966 meters) long, 3 feet, 1.0 inches (0.940 meters) in diameter and weighed 2,830 pounds (1,284 kilograms).

Cruise speed for maximum range is 0.68 Mach. The maximum speed is 505 knots (581 miles per hour/935 kilometers per hour), or 0.8 Mach, whichever is lower. Service ceiling 44,700 feet (1,3625 meters). The maximum range is 1,071 nautical miles (1,232 statute miles/1,983 kilometers).¹

While the P-80 fighter was armed with six .50-caliber machine guns in the nose, the trainer was usually unarmed. Two machine guns could be installed for gunnery training.

In production for 11 years, 5,691 T-33As were built by Lockheed, with licensed production of another 656 by Canadair Ltd., and 210 by Kawasaki Kokuki K.K. For over five decades, the “T-Bird” was used to train many tens of thousands of military pilots worldwide.

TF-80C 48-356 was rebuilt as the prototype for Lockheed’s YF-94A interceptor, and then modified further to the F-94B. Sources have reported it as being stored at Edwards Air Force Base, California.

Prototype Lockheed YF-94 48-356, first flight, 16 April 1949. (U.S. Air Force)
Prototype Lockheed YF-94 48-356, first flight, 16 April 1949. (U.S. Air Force)

¹ Specifications and performance data from T-33A PERFORMANCE EVALUATION, AFFTC-TR-61-22, May 1961,  Air Force Flight Test Center, Edwards Air Force Base, California. The Project Pilot was Captain Thomas P. Stafford, U.S. Air Force. Stafford was next selected for the NASA Gemini Program, and flew Gemini 6A and Gemini 9. He commanded Apollo 10.

© 2019, Bryan R. Swopes

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20 December 1941

Kawasaki Ki-48 Army Type 99 twin-engine light bomber. Allied reporting name, “Lily.”

20 December 1941: For the first time, the 1st American Volunteer Group engaged aircraft of the Empire of Japan in combat. 1st and 2nd Squadrons, based at Kunming, China, intercepted ten Kawasaki Ki-48-I Army Type 99 twin-engine light bombers of the 82nd Dokuritsu Hiko Chutai.

Japan and China had been at war since 1937. The Japanese aircraft were based at the Gia Lâm airport, near Hà Nội in occupied French Indochina. They had frequently attacked Kunming, a Chinese city at the northern end of the Burma Road, and had previously been unopposed. For this mission, the bomber squadron initially had a fighter escort, but the fighters turned back at the Indo-China/China border.

The AVG had established a network of observers which would report enemy aircraft in time for the fighters to take off to intercept them. Having received the warning of inbound aircraft, the 1st and 2nd AVG squadrons were ordered into battle.

1st American Volunteer Group fighter pilots run toward their shark-mouthed Curtiss-Wright Hawk 81-A2s, “somewhere in China.” (Defense Media Network)

Sources vary widely as to the number of AVG aircraft involved, but there may have been as many as 16 Curtiss-Wright Hawk 81-A3s from the 1st Squadron, and 8 more from the 2nd Squadron. There is a general consensus that the fighters shot down three of the Japanese bombers, and that a fourth went down while returning to base. Other sources say that only one of the ten Ki-48s made it back to its base. AVG pilots claimed five bombers shot down and two damaged. One Hawk 81 ran out fuel and was damaged beyond repair in a forced landing.

A Curtiss-Wright Hawk 81-A3 of the 1st American Volunteer Group, Kunming, China, 1942. (U.S. Air Force)
CAMCO assembly facility for Curtiss-Wright Hawk 81-A3 fighters for AVG (74250 A.C.) (SDASM)
Curtiss-Wright 81-A3, 1st American Volunteer Group, circa 1942.
AMERICAN AIRCRAFT IN ROYAL AIR FORCE SERVICE: CURTISS HAWK 81A TOMAHAWK. (CH 17252) The first Curtiss Tomahawks, Marks I and IIA, to enter squadron service with the RAF, in the hands of No. 403 Squadron RCAF at Baginton, Warwickshire. The Squadron operated the Tomahawk for only a short time, yielding them in favour of Supermarine Spitfires in May 1941. Copyright: © IWM. Original Source: http://www.iwm.org.uk/collections/item/object/205210781
AMERICAN AIRCRAFT IN RAF SERVICE 1939-1945: CURTISS HAWK 81A TOMAHAWK. (ATP 10993F) Tomahawk Mk.IIb, AK184: cockpit interior, port side. Photograph taken at Air Service Training Ltd, Hamble, Hampshire. Copyright: © IWM. Original Source: http://www.iwm.org.uk/collections/item/object/205127117
Curtiss-Wright Tomahawk Mk.IIb, AK184, at Hamble, Hampshire © IWM.

RAF order for 100 Tomahawk IIb (Curtiss-Wright Hawk 81-A2 ) was released to be available for AVG. They were built as hybrids of the Tomahawk Mk.IIb and the P-40C Warhawk, though the airplanes intended for the AVG differed in details from either the standard Britsih or American fighters. The airplanes were painted in the standard RAF brown and green camouflage patterns. The completed airplanes were knocked down, crated, then shipped from New York. They were reassembled at a CAMCO facility near Rangoon, Burma.

Two Curtiss-Wright Tomahawk Mk.IIBs on a test flight following assembly at No. 107 Maintenance Unit, Kasfareet, Egypt. Copyright: © IWM.

The Curtiss-Wright Corporation Hawk 81 was a single-seat, single-engine pursuit (fighter). It was a low-wing monoplane of all-metal construction and used flush riveting to reduce aerodynamic drag. It had an enclosed cockpit and retractable landing gear. Extensive wind tunnel testing at the NACA Langley laboratories refined the airplane’s design, significantly increasing the top speed.

The Hawk 81 was 31 feet, 8¾ inches (9.671 meters) long, with a wingspan of 37 feet, 4 inches (11.379 meters) and overall height of 10 feet, 7 inches (3.226 meters).

The Tomahawk/Warhawk was powered by a liquid-cooled, supercharged, 1,710.597ubic-inch-displacement (28.032 liter) Allison Engineering Co. V-1710-C15 (V-1710-33), a single overhead cam (SOHC) 60° V-12 engine, which had a Continuous Power Rating of 930 horsepower at 2,600 r.p.m., from Sea Level to 12,800 feet (3,901 meters), and 1,150 horsepower at 3,000 r.p.m. to 14,300 feet (4,359 meters) for Take Off and Military Power. The engine drove a three-bladed Curtiss Electric constant-speed propeller through a 2:1 gear reduction. The V-1710-33 was 8 feet, 2.54 inches (2.503 meters) long, 3 feet, 5.88 inches (1.064 meters) high, and 2 feet, 5.29 inches (0.744 meters) wide. It weighed 1,340 pounds (607.8 kilograms).

Armament consisted of two air-cooled Browning AN-M2 .50-caliber machine guns mounted in the cowling and synchronized to fire forward through the propeller arc, with 380 rounds of ammunition per gun. In British service, the Tomahawk was armed with an additional four Browning .303 Mark II machine guns, with two in each wing. The American P-40, P-40B and P-40C Warhawks had two or four Browning AN-M2 .30-caliber aircraft machine guns as wing-mounted guns.

The “blood chit” was sometimes sewn on AVG pilots’ jackets.

The AVG pilots were employees of the Central Aircraft Manufacturing Company (CAMCO). Most were former United States military pilots who had been secretly recruited. They were required to resign their officers’ commissions. Importantly, they were all civilians—not members of the Chinese military–nor were they otherwise employed by the government of China. They each had a one year contract, 4 July 1941–4 July 1942. They were paid a monthly salary, more than three times their former military pay, and were also paid a bonus for each enemy airplane they shot down.

(Note: This article is an incomplete draft)

© 2018, Bryan R. Swopes

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