1/5 SCALE RC GRUMMAN F9F COUGAR - KOREAN WAR FIGHTER JET - JETCAT 160 TURBINE - LMA ELVINGTON - 2022

The Grumman F9F/F-9 Cougar was a carrier-based fighter aircraft for the United States Navy and United States Marine Corps. Based on Grumman's earlier F9F Panther, the Cougar replaced the Panther's straight wing with a more modern swept wing.
Thrust was also increased with the installation of a newer, more powerful engine. The Navy considered the Cougar an updated version of the Panther, despite having a different official name, and thus Cougars started off from F9F-6.

Top speed : 1,041 km/h
Retired : 1974, US Navy
First flight : 20 September 1951
Developed from : Grumman F9F Panther
Number built : 1,988
Primary users : United States Navy; United States Marine Corps; Argentine Navy
Role : Fighter aircraft

Design and development -

A swept-wing F9F-6 Cougar (foreground) and a straight-wing F9F-5 Panther in flight
Rumors that the Soviet Union had produced a swept-wing fighter had circulated a year before the Mikoyan-Gurevich MiG-15 first appeared at air shows in 1949. Despite the level of activity taking place with swept-wing aircraft, the Navy was not initially focused on the development of such aircraft.
This was largely because the Navy's focus at the time was defending the battle group against high speed, high altitude bombers with interceptors, as well as escorting medium-range carrier-based bombers in all weather conditions. Air-to-air combat was of less interest. Nonetheless, the Navy appreciated the importance of getting a capable carrier-based swept-wing jet fighter.
Grumman was awarded a contract for the development of a swept-wing fighter jet in 1951. The arrival of the MiG-15, which easily outclassed straight-wing fighters in the air war over North Korea, was a major factor.

Prototypes were quickly produced by modifying Panthers, and the first (XF9F-6) flew on 20 September 1951. The aircraft was still subsonic, but the critical Mach number was increased from 0.79 to 0.86 at sea level and to 0.895 at 35,000 ft (10,000 m), improving performance markedly over the Panther. Instead of using conventional ailerons for roll control, the F9F-6 uses spoilers on the upper surfaces of the wing.
Wing fences were soon added and the spoilers extended from the fences to the tips of the wing. The rudder pedals controlled the part of the rudder below the horizontal tail surface, while the upper portion of the rudder was controlled by a yaw damper. This allowed the Cougar to fly safely and easily without the upper portion of the tail.

A swept-wing F9F-6 Cougar (foreground) and a straight-wing F9F-5 Panther in flight
Rumors that the Soviet Union had produced a swept-wing fighter had circulated a year before the Mikoyan-Gurevich MiG-15 first appeared at air shows in 1949. Despite the level of activity taking place with swept-wing aircraft, the Navy was not initially focused on the development of such aircraft. This was largely because the Navy's focus at the time was defending the battle group against high speed, high altitude bombers with interceptors, as well as escorting medium-range carrier-based bombers in all weather conditions. Air-to-air combat was of less interest. Nonetheless, the Navy appreciated the importance of getting a capable carrier-based swept-wing jet fighter.

Grumman was awarded a contract for the development of a swept-wing fighter jet in 1951. The arrival of the MiG-15, which easily outclassed straight-wing fighters in the air war over North Korea, was a major factor.

Prototypes were quickly produced by modifying Panthers, and the first (XF9F-6) flew on 20 September 1951. The aircraft was still subsonic, but the critical Mach number was increased from 0.79 to 0.86 at sea level and to 0.895 at 35,000 ft (10,000 m), improving performance markedly over the Panther. Instead of using conventional ailerons for roll control, the F9F-6 uses spoilers on the upper surfaces of the wing. Wing fences were soon added and the spoilers extended from the fences to the tips of the wing. The rudder pedals controlled the part of the rudder below the horizontal tail surface, while the upper portion of the rudder was controlled by a yaw damper. This allowed the Cougar to fly safely and easily without the upper portion of the tail.

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FILMED AT AN LMA (LARGE MODEL ASSOCIATION) RUN RC MODEL AIRCRAFT SHOW AT THE YORKSHIRE AIR MUSEUM AT RAF ELVINGTON, HALIFAX WAY,
YORK, YO41 4AU ON SATURDAY + SUNDAY 13 - 14 - 8 - 2022,