The first production North American Aviation F-100F-1-NA Super Sabre, 56-3725, taking off at Los Angeles International Airport. (North American Aviation, Inc.)
7 March 1957: North American Aviation test pilot George Mace took off from Los Angeles International Airport in the first production F-100F-1-NA Super Sabre two-place trainer, 56-3725 (NAA serial number 243-1).
The F-100 series fighters had a very high accident rate. It was thought that the problem was a lack of pilot experience, so the U.S. Air Force requested that North American Aviation produce a two-seat trainer variant. A production F-100C-20-NA, 54-1966 (NAA serial number 217-151) was modified to the prototype tandem cockpit TF-100C. With test pilot Alvin Swauger White in the cockpit, the TF-100C made its first flight on 3 August 1956.¹
The prototype North American Aviation TF-100C 54-1966 retracting its landing gear on takeoff. (U.S. Air Force 060905-F-1234S-070)Joel Robert Baker (1920–2011). (Photograph courtesy of Neil Corbett)
NAA test pilot Joel Robert (“Bob”) Baker was performing spin tests of the TF-100C north of Kramer Junction, northeast of Edwards Air Force Base in the high desert of southern California, 9 April 1957. The prototype went into an unrecoverable spin, losing parts of its tail surfaces. After the twelfth spin, Baker ejected, suffering minor injuries. 54-1966 crashed north of Edwards and was totally destroyed.
With the F-100D Super Sabre coming into operation, the Air Force ordered a training variant based on that configuration, designated F-100F. Unlike the TF-100C, the F-100F retained full combat capability. Between January 1958 and October 1959, 339 F-100Fs were manufactured at North American Aviation’s Los Angeles plant.
North American Aviation test pilot Alvin Swauger (“Al”) White, with F-100A-5-NA Super Sabre 52-5767, circa 1954. (National Aeronautics and Space Administration)
The two-place tandem cockpit required lengthening the fuselage of the F-100D. The F-100F is 52 feet, 6 inches (16.002 meters) long with the pitot boom folded, and 57 feet, 2 inches (17.424 meters) long with the pitot boom extended. (The F-100F is 3 feet, 2 inches (0.965 meters) longer than the F-100D with the boom folded, and 2 feet, 11 inches (0.889 meters), with the boom extended.) The wingspan and height remain the same, at 38 feet, 9 inches (11.811 meters) and 16 feet, 3 inches (4.953 meters). The gross weight of the F-100F increased 325 pounds (147 kilograms) over the F-100D to to 30,750 pounds (13,948 kilograms).
Cutaway illustration of the J57 afterburning turbojet engine. (U.S. Air Force)
Both the single-place F-100D and tandem seat F-100F were powered by either the Pratt & Whitney Turbo Wasp J57-P-21A or the Ford-built J57-F-21A. The J57 was a two-spool axial flow turbojet which had a 16-stage compressor (9 low pressure and 7 high pressure stages, an eight-unit combustion chamber, a 3-stage turbine (1 high- and 2 low-pressure stages), and an afterburner. The engine had a static rating of 10,200 pounds of thrust (45.372 kilonewtons) at Sea Level, or 16,000 pounds of thrust (71.172 kilonewtons) with afterburner.
Two of the four 20 mm M39 single-barrel revolver cannons were deleted from the F-100F, but it retained the six hard points for underwing stores. The airplane could carry bombs, rockets or guided missiles, such as the AIM-9B Sidewinder or AGM-12B Bullpup. A “Special Store” (a Mark 7, Mark 28, Mark 43, or Mark 57 nuclear bomb) could be carried on the center hardpoint of the left wing. External fuel tanks with capacities ranging from 275 to 450 gallons (1,041–1,703 liters) could also be carried on the inner four hardpoints.
During the Vietnam War, six F-100F Super Sabers were modified as “Wild Weasels” to attack enemy surface-to-air missile sites, using both unguided rockets and the AGM-12B Bullpup guided missile. Several more F-100Fs, in the Wild Weasel I configuration, used radar-homing AGM-45 Shrike anti-radiation missiles to attack the missile sites.
F-100Fs were also used in Operation COMMANDO SABER as high speed forward air controllers to guide air attacks against the Hồ Chí Minh Trail. These operated under the call sign “Misty,” and are known as the Misty FACs.
With the approach on the North American Aviation X-15 hypersonic reearch rocketplane and Boeing X-20 Dyna-Soar projects, an aircraft was needed to test the very steep approaches planned for these aerospacecraft. F-100F 56-3725 was modified to increase aerodynamic drag. The drag chute and afterburner were removed and a thrust reverser installed. The standard belly speed brake was replaced by a perforated one with approximately 3 times the area. With these modifications, the modified NF-100F could make its final approach at 230 miles per hour (370 kilometers per hour) instead of the normal 155 miles per hour (249 kilometers per hour).
North American Aviation NF-100F 56-3725, with thrust reverser and enlarged and perforated belly speed brake, being tested in NASA Ames Full Scale Wind Tunnel, 12 February 1959 (National Aeronautics and Space Administration NACA A-24788)
NF-100F 56-3725 was later reconfigured to a DF-100F drone director.
North American Aviation NF-100F 56-3725 assigned to the Air Research and Development Command, circa 1959. (Mary Evans Picture Library Media ID 21131633)
¹ Some sources state 17 January 1955, and others, 24 January 1956.
Major William J. Knight, U.S. Air Force, with the modified X-15A-2, 56-6671, at Edwards Air Force Base, California. Knight is wearing a David Clark Co. MC-2 full-pressure suit with an MA-3 helmet. (U.S. Air Force)
18 November 1966: On Flight 175 of the research program, Major William J. (“Pete”) Knight, U.S. Air Force, flew the newly-modified North American Aviation X-15A-2, 56-6671, to Mach 6.33 (4,261 miles per hour/6,857 kilometers per hour) at 98,900 feet (30,245 meters). This is just 11 years, to the day, since Pete Everest made the first powered flight in the Bell Aircraft Corporation X-2 rocketplane, with more than 6 times an increase in speed.
On this date, NASA made an attempt to launch two X-15s, -671 and -672, using the NB-52A 52-003 and NB-52B 52-008. However -672, the number three ship, had to abort the mission.
At the left, Boeing NB-52A 52-003 carries X-15 56-6670 while on the right, NB-52B 52-008 carries X-15 56-6671.(NASA)
Balls 8, the NB-52B, flown by NASA test pilot Fitz Fulton and Colonel Joe Cotton, USAF, carried 56-6671 to the launch point over Mud Lake, Nevada, approximately 200 miles to the north of Edwards AFB. (This was the lake where -671 was severely damaged in an emergency landing, 9 November 1962. It was returned to North American to be rebuilt to the X-15A-2 configuration and returned to flight operation 19 months later.)
At 1:24:07.2 p.m. local time, Pete Knight and the X-15 were dropped from the pylon under the right wing of the B-52. He ignited the Reaction Motors XLR99-RM-1 and began to accelerate with its 57,000 pounds of thrust (253.549 kilonewtons).
Since this was to be a high temperature test flight, it was planned to fly no higher than 100,000 feet (30,480 meters). The denser atmosphere would result in greater aerodynamic heating of the rocketplane.
With the two external propellant tanks carrying an additional 1,800 gallons (6,814 liters) of liquid ammonia and liquid oxygen, the engine ran for 2 minutes, 16.4 seconds. The rocketplane had accelerated to Mach 2. The external tanks emptied in about 60 seconds and were jettisoned. The tanks were equipped with parachutes. They were recovered to be reused on later flights.
The X-15, now about 25,000 pounds (11,340 kilograms) lighter and without the aerodynamic drag of the tanks, continued to accelerate. At its highest speed, the rocketplane was travelling approximately 6,500 feet per second (1,981 meters per second), more than twice as fast as a high-powered rifle bullet. Its surface temperatures exceeded 1,200 °F. (649 °C.)
Knight landed the X-15 on Rogers Dry Lake at Edwards Air Force Base. The duration of this flight had been 8 minutes, 26.8 seconds.
The modified North American Aviation X-15A-2, 56-6671, with external propellant tanks mounted. (NASA)
North American Aviation NA-73X prototype, left front quarter view. (North American Aviation, Inc.)
26 October 1940: At Mines Field, Los Angeles, California (now, Los Angeles International Airport), free lance test pilot Vance Breese took the prototype North American Aviation NA-73X, civil registration NX19998, on a five-minute first flight. Later in the day, Breese flew the NA-73X another ten minutes. He would make six more test flights between 26 October and 13 November, totaling approximately 3 hours, 30 minutes of flight time.
With Great Britain at war with Nazi Germany, the Royal Air Force was the primary defender of the island nation. Airplane manufacturers were turning out Hawker Hurricanes and Supermarine Spitfires as rapidly as possible, but they were barely keeping up with combat losses. England needed more fighters. They had taken over an order for Curtiss-Wright Hawk 81-A1 fighters which had been built for France, but which had not been shipped by the time France surrendered. The RAF called these fighters the Tomahawk Mark I (P-40 Warhawk in U.S. service).
North American Aviation’s NA-73X fighter prototype, engine idling, with Vance Breese in the cockpit at Mines Field, Los Angeles, 26 October 1941. (North American Aviation Inc.)
The British Purchasing Commission asked North American Aviation in Los Angeles, California, to build additional Tomahawks under license from Curtiss-Wright. North American countered with a proposal to design a completely new and superior fighter around the P-40’s Allison V-12 engine, and begin production in no more time than it would take to get a P-40 production line up and running. The Purchasing Commission agreed, and with a letter of understanding, North American began work on the NA-73X on 1 May 1940. They were to produce 320 fighters before 30 September 1941, approximately 50 per month, at a total price of $14,746,964.35.
Vance Breese in the cockpit of the NA-73X, NX19998, at Mines Field, preparing for a test flight. (North American Aviation)
In a contract amendment dated 9 December 1940, the British Purchasing Commission directed that the NA-73 would be identified by the name, “Mustang.”
The prototype NA-73X, North American serial number 73-3097, was a single-seat, single-engine, low wing monoplane with retractable landing gear. It was primarily of metal construction, though the flight control surfaces were fabric covered. The airplane was designed for the maximum reduction in aerodynamic drag. The fuselage panels were precisely designed and very smooth. Flush riveting was used. The Mustang was the first airplane to use a laminar-flow wing. The coolant radiator with its intake and exhaust ducts was located behind and below the cockpit. As cooling air passed through the radiator, it was heated and expanded, so that as it exited, it actually produced some thrust.
The prototype was 32 feet, 2–5/8 inches (9.820 meters) long, with a wing span of 37 feet, 5/16 inch (11.286 meters). Empty weight of the NA-73X was 6,278 pounds (2,848 kilograms) and normal takeoff weight was 7,965 pounds (3,613 kilograms).
The NA-73X was powered by a liquid-cooled, supercharged, 1,710.60-cubic-inch-displacement (28.032 liter) Allison Engineering Company V-1710-F3R (V-1710-39) single overhead cam 60° V-12 engine, with a compression ratio of 6.65:1 and a single-stage, single-speed supercharger. This was a right-hand tractor engine (the V-1710 was built in both right-hand and left-hand configurations) which drove a 10 foot, 6 inch (3.200 meter) diameter, three-bladed, Curtiss Electric constant-speed propeller through a 2.00:1 gear reduction.
The V-1710-39 had a Normal Power rating of 880 horsepower at 2,600 r.p.m. at Sea Level; Take Off Power rating of 1,150 horsepower at 3,000 r.p.m. at Sea Level, with 44.5 inches of manifold pressure (1.51 Bar), 5 minute limit; and a War Emergency Power rating of 1,490 horsepower at 3,000 r.p.m., with 56 inches of manifold pressure (1.90 Bar). The V-1710-F3R was 3 feet, ¾ inches (0.934 meters) high, 2 feet, 5-9/32 inches (0.744 meters) wide and 7 feet, 1-5/8 inches (2.175 meters) long. It had a dry weight of 1,310 pounds (594 kilograms).
North American Aviation’s prototype fighter, NA-73X, NX19998, at Mines Field, Los Angeles, California. (North American Aviation)
The NA-73X had a maximum speed of 382 miles per hour (615 kilometers per hour) at 13,700 feet (4,176 meters). The service ceiling was 32,000 feet (9,754 meters). The fuel capacity was 180 gallons (681.37 liters), giving the airplane a range of 750 miles (1,207 kilometers).
NX19998 was substantially damaged on 20 November 1940 when North American’s Chief Test Pilot, Paul B. Balfour, unable to make it back to Mines Field after the Allison engine failed, made a forced landing in a plowed field just west of Lincoln Boulevard. The prototype flipped over and landed upside down. Sources differ as to the cause of the engine failure, with some citing carburetor icing and others suggesting that Balfour failed to switch fuel tanks and the engine stopped running due to fuel starvation. Balfour was replaced by Robert C. Chilton and NA-73X was rebuilt.
Robert C. Chilton flying the rebuilt NA-73X on an early familiarization flight. (North American Aviation)
Bob Chilton said that “. . . NA-73X was a clean-flying aircraft with no bad vices. It was quite pleasant in the air and handled very similar to later production articles.”
There was only one NA-73X prototype. Its status is not known. Chilton recalled, “. . . NA-73X was just pushed aside after it had been retired from its last flight. It probably ended up on the company’s junk pile, but I do not recall seeing it there.” The prototype may have been given to a local industrial trade school.
Vance Breese (San Diego Air and Space Museum Archive)
Vance Breese was born 20 April 1904 at Keystone, Washington, He was the first of five children of Lee Humbert Breese, a machinist, and Anna E. Dixon Breese.
Breese founded the Breese Aircraft Company in 1926, based at San Francisco, California, and then, as the Breese-Wilde Corporation, moved to Oregon. The company produced the Breese-Wilde Model 5, a single-engine light airplane. Two of these, Aloha and Pabco Flyer, flew in the notorious 1927 Dole Air Race from Oakland, California, to Honolulu, Hawaii. Pabco Flyer crashed on takeoff when its landing gear collapsed. Aloha finished in second place.
Breese formed a partnership with Gerard Vultee in 1932, with the Airplane Development Corporation at Detroit Michigan. They produced the Vultee V-1A, an 8 passenger light transport. He was also involved in an express mail company, Air Express Corporation.
American Airlines Vultee 1A NC13768, designed by Gerard Vultee and Vance Breese.
Vance Breese was well known as a test pilot, making a number of first flights and conducting flight tests for various airplane manufacturers. As a test pilot, Breese pioneered the use of recording equipment during flight testing. He used a Dictaphone to record his notes, and a cine camera to film the instruments during the flight.
Breese was married three times. He first married Miss Kathryn (“Kitty”) M. McConnell in 1922. They divorced. Later, Breese married Eleanor Louise Buckles at Los Angeles, California, 18 November 1946. They had a son, Vance Breese, Jr., who became a well-known motorcycle racer and land speed record holder. They divorced in 1967. Breese then married Mireille E. Demartelley (AKA Mireille E. Hunt), 13 July 1967, at Santa Barbara, California.
He died at Santa Monica, California, 26 June 1973, at the age of 69 years. He is an Honorary Fellow of the Society of Experimental Test Pilots.
LT William H. Allen in the cockpit of his P-51D Mustang, Pretty Patty II, along with his ground crew, TSGT F.S. Westbrook, SGT W.G. Holmes and CPL F.W. Bandy. (F. Birtciel)
5 September 1944: Lieutenant William H. Allen, U.S. Army Air Corps, was a fighter pilot assigned to the 343rd Fighter Squadron, 55th Fighter Group, based at RAF Wormingford, Essex, England. After escorting a bombing mission to Stuttgart, Lt. Allen, flying his North American Aviation P-51D-5-NA Mustang, 44-14049, Pretty Patty II, (identification markings CY J) and his flight, which included Lieutenant William H. Lewis, attacked an airfield north of Göppingen, Germany.
Lieutenant Allen became an Ace in one day when he shot down five Heinkel He 111 twin-engine bombers as they took off at two-minute intervals.
The flight of Mustangs shot down a total of 16 enemy aircraft.
LT William H. Allen and his ground crew pose with their P-51D Mustang, Pretty Patty II. (F. Birtciel)
Joe Walker with the Number 2 North American Aviation X-15A, 56-6671, on Rogers Dry Lake. (NASA)Joseph A. Walker, NASA Chief Research Test Pilot
19 July 1963: Between 1960 and 1963, NASA Chief Research Test Pilot Joseph Albert Walker made 25 flights in the North American Aviation X-15A hypersonic research rocketplanes. His 24th flight was the 21st for the Number 3 X-15, 56-6672, and the 90th of the X-15 program.
At 10:20:05.0 a.m., Walker and the X-15 were airdropped from the Boeing NB-52B Stratofortress, 53-008, Balls 8, over Smith Ranch Dry Lake, Nevada. Walker fired the Reaction Motors XLR99-RM-1 rocket engine and over the next 84.6 seconds the engine’s 60,000 pounds of thrust drove the X-15 upward. The engine’s thrust on this flight was higher than expected, shutdown was 1.6 seconds late, and Walker’s climb angle was 1½° too high, so the X-15 overshot the predicted maximum altitude and its ballistic arc peaked at 347,800 feet (106,010 meters, 65.8 miles). The maximum speed was Mach 5.50 (3,714 miles per hour, 5,977 kilometers per hour).
Walker glided to a touch down at Rogers Dry Lake, Edwards Air Force Base California, after flying 311 miles in 11 minutes, 24.1 seconds of flight. On this flight, Joe Walker became the first American civilian to fly into Space.
North American Aviation X-15A 56-6672 on Rogers Dry Lake after a flight. (NASA)
