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73-North-American-F-100-Super-Sabre
The North American F-100 Super Sabre was an American supersonic jet fighter aircraft that served with the United States Air Force from 1954 to 1971 and with the Air National Guard until 1979. The first of the Century Series of USAF jet fighters, it was the first USAF fighter capable of supersonic speed in level flight. The F-100 was designed by North American Aviation as a higher performance follow-on to the F-86 Sabre air superiority fighter.
Maximum speed: 1,389 km/h (863.08 mph) Maiden flight: 25 May 1953 Length: 50.00 ft Wingspan: 38.75 ft Retired: 1970 Manufacturer: North American Aviation
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The North American F-100 Super Sabre was an American supersonic jet fighter aircraft that served with the United States Air Force from 1954 to 1971 and with the Air National Guard until 1979. The first of the Century Series of USAF jet fighters, it was the first USAF fighter capable of supersonic speed in level flight. The F-100 was designed by North American Aviation as a higher performance follow-on to the F-86 Sabre air superiority fighter.
The North American Aviation F-100 Super Sabre was a sleek, swept-back-wing fighter that gave the United States a supersonic Air Force. Although the first version was produced prior to 1950, various improved versions served as trainers and as active military craft at many U.S. and foreign bases.
Since May 1953, when the first prototype model, the YF-100, bettered the speed of sound on its first flight, the versatile fighter set numerous records for speed, endurance, range and maintenance.
Late production models of the F-100D and F-100F had the capability of being launched from remote areas in the manner of manned missiles. An F-100D Super Sabre became the first supersonic aircraft to be “boosted” airborne without use of a runway in successful Zero Length Launch (ZEL) tests at Edwards Air Force Base, Calif., in 1958.
In addition to its nuclear bomb armament and four 20 mm cannons, the Super Sabre could be equipped to fire rockets and missiles, including the heat-seeking GAR-8 Sidewinder.
While the later models of the F-100 had a speed in excess of 1,000 mph, two earlier models of the “A” and “C” established the world’s first supersonic speed records. Colonel F.K. (Pete) Everest reached 755.149 mph in October 1953, and Colonel Horace Hanes topped 822 mph in August 1955.
To demonstrate the ability of its pilot and aircraft, the Air Force chose F-100 Super Sabres to perform throughout the world in aerial precision demonstration flights. The famed “Thunderbirds,” a four-man aircraft team, were viewed by over 19 million people as the storied pilots performed intricate precision maneuvers at low altitude. In Europe the “Skyblazers” flew similar demonstrations.
The jet fighter was originally powered by a Pratt & Whitney J57-P-7 axial-flow engine. Later models of the F-100 were powered by a Pratt & Whitney J57-P-21A engine. Both were two-stage turbojet engines with afterburner, rated in the 10,000-pound thrust class.
The F-100 had a service ceiling above 50,000 feet and a range of more than 1,000 statute miles.
In addition to the thin, highly swept wing and tail, the F-100 design incorporated other features that reflect an answer to the problem of supersonic flight. Heat-resisting titanium was used extensively throughout the plane. A low-drag, ultra-streamlined fuselage and canopy with but one thin-lipped air intake duct helped make supersonic speed possible. The canopy line matched the rear fuselage in a smoothly curving line so that from the side, the Super Sabre appeared to be slightly arched. Other features included automatic leading-edge slats and a low-positioned one-piece horizontal stabilizer. The F-100 was the first USAF airplane to utilize the low tail.
The plane had an automatically regulated air conditioning and pressurizing system and automatic fuel system.
Particular attention was given to placement of all controls, equipment and instruments in the cockpit for ease of operation.
When photos of the F-100 Super Sabre were released after test pilot George Welch completed the plane’s maiden flight on May 25, 1953, hardly anyone thought the F-100 looked “right.” Its thin low wing, low-set horizontal tail, and long snoot narrowing to a nose air intake made up a shape that had never before been seen in an aircraft. Never mind that it was the result of years of aerodynamic research. Its adherents believed the F-100 would be the air-to-air fighter of the future, a product of American know-how that would come up against the Soviet Union’s latest MiGs and prevail over them.
The F-100 has never been credited with an aerial victory.
“We never thought we’d be doing air-to-ground in a stinking Southeast Asia backwater,” said retired Col. Charles Vasiliadis. “We never thought our ‘silver bullet’ of a fighter would eventually be painted the green-brown color of a Vietnamese swamp.”
Before it became the “Hun” in Vietnam, the Super Sabre stood guard in Korea. This F-100D (55-3568) of the 35th Fighter Bomber Squadron “Pantons,” 8th Fighter Bomber Wing carries a Mark 7 nuclear bomb at Osan Air Base, South Korea, ca. 1959. Photo by Robert F. Dorr
Long and sleek with low-set wings and tail, the F-100 ushered in a new look while propelled by a 16,950-lb thrust Pratt & Whitney J57-P-21/21A turbojet, the Air Force‘s standard engine of the era. Its long-snouted nose bristled with four 20mm cannon.
“I felt that my squadron commander was LBJ and my operations officer was McNamara,” Laven carped after the mission, referring to President Lyndon B. Johnson and Secretary of Defense Robert S. McNamara.
Billed in press releases as the world’s first fighter able to maintain supersonic speed in level flight, the F-100 was the air-to-air successor to the Korean War-era F-86 Sabre.
Second One
In fact, the F-100 was not the first fighter capable of supersonic speed in level flight. The Soviet MiG-19 - which it never met in battle - flew on Jan. 5, 1953, while the first Super Sabre took to the air on April 24 of that year. And although the F-100 was a formidable adversary in an air-to-air fight, would-be air aces soon found themselves using the Super Sabre to haul napalm, bombs, and rockets on air-to-ground missions in Vietnam.
“Everybody wanted to get a MiG. But it was rapidly becoming clear that our F-100 was a valuable tool to support friendly troops on the ground.”
As part of a larger build-up, in 1965 the United States began expanding the number of F-100 squadrons in Southeast Asia. By then, most F-100s were painted in the green-brown color scheme known as T.O.114 camouflage, named for a technical order. Developed as an air-to-air fighter with enormous effort - including a redesign of the fin after a crash that killed Welch - after a decade of service it was belatedly being nicknamed the “Hun” and was being used as a fighter-bomber.
Col. George Laven introduced the F-100 to combat with a strike on anti-aircraft installations in Laos on June 9, 1964, after a last-minute change in the ordnance he was instructed to carry. Laven’s unit was the 615th Tactical Fighter Squadron, flying from Da Nang, South Vietnam. Afterward, Laven complained about being micro-managed from Washington, a lament pilots were to repeat often in Southeast Asia. “I felt that my squadron commander was LBJ and my operations officer was McNamara,” Laven carped after the mission, referring to President Lyndon B. Johnson and Secretary of Defense Robert S. McNamara.
After a few missions into North Vietnam in 1965, F-100s spent the remainder of the war south of the 17th Parallel.
During the brief period when the F-100 was used for air-to-air fighting, on April 4, 1965 Captain Donald Kilgus of the 416th Tactical Fighter Squadron fired on a fleeing North Vietnamese MiG-17. Kilgus and others who were in the air that day believed he shot down the MiG, but the Air Force dubbed it a “probable” kill. The F-100 has never been credited with an aerial victory.
An F-100D Super Sabre of the 352nd Tactical Fighter Squadron, 35th Tactical Fighter Wing (VM) releases a napalm bomb over rain forest canopy in South Vietnam.
Air to Ground "Hun"
Close air support missions flown by F-100C and F-100D models were perilous and often put pilots in close proximity to friend and foe on the ground. The 510th Tactical Fighter Squadron alone lost eight aircraft in three months. “You usually don’t see muzzle flashes during the day, but when you’re eyeball to eyeball with the Viet Cong, you see them,” said Vasiliadis of the 510th squadron. “When their tracers are flying over the top of your canopy, it’s pretty easy to remember that your job is to break things and kill people.” Pilots like Vasiliadis say the “Hun” was extremely accurate when delivering bombs to enemy forces on the ground, but was never a particularly good strafing platform.
In 1965, two-seat F-100F Super Sabres began operating as dedicated surface to air missile (SAM) detection and suppression aircraft in the “Wild Weasel I” program.
Misty Forward Air Control (FAC) F-100Fs carried two large external fuel tanks under the wings. The bent tube on the aircraft’s right wing is the aerial refueling probe. The openings for the two 20mm cannon can be seen on either side of the nose landing gear door.
The dangers inherent in the F-100 Wild Weasel mission were illustrated on Dec. 20, 1965, when Capts. John Pitchford and Robert Trier failed to return from a mission. Pitchford, at the controls, was guiding four F-105s on a strike against North Vietnamese targets. After detecting a “Fan Song” surface-to-air missile-associated radar near Haiphong, Pitchford launched an attack. A 37 mm shell struck his craft. Pitchford pulled up and found that he had some control. He fired his marker rockets into the SAM site, enabling the F-105s to hit it, and turned for the Gulf of Tonkin - when his hydraulics went out. A full hydraulic failure meant total loss of control so, with the shoreline in sight, Pitchford and Trier ejected. The North Vietnamese later claimed that they killed Trier in a shoot-out on the ground and his remains were eventually repatriated. Pitchford became a prisoner of war for the next eight years.
The F-100F remained in the “Wild Weasel” role until replaced by the F-105F Thunderchief.
In 1966, “Wild Weasel” F-100Fs were wired for the AGM-45 Shrike anti-radiation missile and began using the weapon against “Fan Song” radars. The combination of aircraft and missile never proved fully satisfactory.
On Aug. 11, 1967, Lt. Col. James E. McInerney and Capt. Fred Shannon in an F-100F led a mission that destroyed six SAM sites and damaged four, clearing the way for a strike on Hanoi’s Paul Doumer Bridge. McInerney was awarded the Air Force Cross, the second-highest U.S. award. The F-100F remained in the “Wild Weasel” role until replaced by the F-105F Thunderchief.
Fogleman became the only Super Sabre pilot ever rescued by riding out on a Cobra helicopter.
On Sept. 12, 1968, F-100D pilot Capt. Ronald Fogleman was shot down in the I Corps area 200 miles (320 km) north of Bien Hoa while flying aircraft 56-3245. Fogleman became the only Super Sabre pilot ever rescued by riding out on a Cobra helicopter. The U.S. Army AH-1G reached him and he came out clinging to a deployed gun-panel door. On another combat flight, Fogleman and Capt. Merrill “Tony” McPeak were together in a two-seat F-100F. It is fortunate the Viet Cong were not lucky that day: Both Fogleman and McPeak reached four-star rank and served as Air Force chief of staff in the 1990s.
The last combat F-100 departed Vietnam in 1971, after nearly eight years of combat. According to official figures, Super Sabres flew 360,283 combat sorties. The four tactical fighter wings in Vietnam (3rd, 31st, 35th and 37th) thus exceeded the number of combat sorties flown by 15,000-plus P-51 Mustangs in World War II. The Air Force lost 186 F-100 Super Sabres to anti-aircraft fire, none to MiGs, seven during Viet Cong assaults on its air bases and 45 to operational incidents.
The Air Force’s Thunderbirds demonstration team flew F-100 Super Sabres for several years. F-100s were exported to France, Denmark, and Taiwan. After Vietnam, many continued to serve in Air National Guard squadrons until replaced with newer fighters.
General Characteristics
Crew: 1
Length: 50 ft (15.2 m)
Wingspan: 38 ft 9 in (11.81 m)
Height: 16 ft 2¾ in (4.95 m)
Wing area: 400 ft² (37 m²)
Empty weight: 21,000 lb (9,500 kg)
Loaded weight: 28,847 lb (13,085 kg)
Max. takeoff weight: 34,832 lb (15,800 kg)
*Zero-lift drag coefficient: 0.0130
Drag area: 5.0 ft² (0.46 m²)
Aspect ratio: 3.76
Powerplant: 1 × Pratt & Whitney J57-P-21/21A turbojet
Dry thrust: 10,200 lbf (45 kN)
Thrust with afterburner: 16,000 lbf (71 kN)
Role: Fighter/fighter-bomber
Manufacturer: North American Aviation
First flight: 25 May 1953
Introduction: 27 September 1954
Retired: 1979, United States Air National Guard; 1988, Republic
of China Air Force
Status: Retired
Primary users: United States Air Force
Turkish Air Force
Republic of China Air Force
French Air Force
Produced: 1953-1959
Number built: 2,294
Unit cost: US$697,029 (F-100D) ($6.22 million in today's dollars)
Developed from: North American F-86 Sabre
Developed into: North American F-107
Performance
Maximum speed: 750 kn (864 mph, 1,390 km/h, Mach 1.3)
Range: 1,733 NM (1,995 mi, 3,210 km)
Service ceiling: 50,000 ft (15,000 m)
Rate of climb: 22,400 ft/min (114 m/s)
Wing loading: 72.1 lb/ft² (352 kg/m²)
Thrust/weight: 0.55
Lift-to-drag ratio: 13.9
Armaments
Guns: 4× 20 mm (0.787 in) Pontiac M39A1 revolver cannon
Missiles: ** 4× AIM-9 Sidewinder or
2× AGM-12 Bullpup or
2× or 4× LAU-3/A 2.75" unguided rocket dispenser
Bombs: 7,040 lb (3,190 kg) of weapons, including
Conventional bombs or
Special stores:
Mark 7 nuclear bomb or
Mk 28 nuclear bomb or
Mk 38 nuclear bomb or
Mk 43 nuclear bomb
Avionics
Minneapolis-Honeywell MB-3 automatic pilot
AN/AJB-1B low-altitude bombing system
AN/APR-26 rearward radar warning
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