25 February 1975: At Edwards Air Force Base, California, Brigadier General Charles Elwood (“Chuck”) Yeager, United States Air Force, made his final flight as an active duty Air Force pilot, flying this McDonnell Douglas F-4E Phantom II.
During his career, General Yeager flew 180 different aircraft types and accumulated 10,131.6 flight hours.
General Yeager retired 1 March 1975 after 12,222 days of military service.
13 February 1923: Brigadier General Charles Elwood Yeager, United States Air Force (Retired), was born at Myra, West Virginia.
“Who is the greatest pilot I ever saw? Well, uh. . . Well, let me tell you. . . .”
The following is from the official U.S. Air Force biography: (Photographs from various sources)
“The world’s first man-made sonic boom told the story. On Oct. 14, 1947, over dry Rogers Lake in California, Chuck Yeager rode the X-1, attached to the belly of a B-29 bomber, to an altitude of 25,000 feet. After releasing from the B-29, he rocketed to an altitude of 40,000 feet. Moments later he became the first person to break the sound barrier, safely taking the X-1 he called Glamorous Glennis to a speed of 662 mph, faster than the speed of sound at that altitude. His first words after the flight were, ‘I’m still wearing my ears and nothing else fell off neither.’
“Yeager was born in February 1923 in Myra, W. V. In September 1941, he enlisted as a private in the Army Air Corps. He was soon accepted for pilot training under the flying sergeant program and received his pilot wings and appointment as a flight officer in March 1943 at Luke Field, Ariz.
“His first assignment was as a P-39 pilot with the 363rd Fighter Squadron, Tonopah, Nev. He went to England in November 1943 and flew P-51s in combat against the Germans, shooting down one ME-109 and an HE-111K before being shot down on his eighth combat mission over German-occupied France on March 5, 1944. He evaded capture by the enemy when elements of the French Maquis helped him to reach the safety of the Spanish border. That summer, he was released to the British at Gibraltar and returned to England. He returned to his squadron and flew 56 more combat missions, shooting down 11 more enemy aircraft.
“Returning to stateside, Yeager participated in various test projects, including the P-80 Shooting Star and P-84 Thunderjet. He also evaluated all the German and Japanese fighter aircraft brought back to the United States after the war. This assignment led to his selection as pilot of the nation’s first research rocket aircraft, the Bell X-1, at Muroc Army Air Field (now Edwards Air Force Base, Calif.). After breaking the sound barrier in 1947, Yeager flew the X-1 more than 40 times in the next two years, exceeding 1,000 mph and 70,000 feet. He was the first American to make a ground takeoff in a rocket-powered aircraft. In December 1953 he flew the Bell X-1A 1,650 mph, becoming the first man to fly two and one-half times the speed of sound.
“After a succession of command jobs, Yeager became commandant of the Aerospace Research Pilot School (now the U.S. Air Force Test Pilot School), where all military astronauts were trained.
“On Dec. 10, 1963, he narrowly escaped death while testing an NF-104 rocket-augmented aerospace trainer. His aircraft went out of control at 108,700 feet (nearly 21 miles up) and crashed. He parachuted to safety at 8,500 feet after battling to gain control of the powerless aircraft. He thus became the first pilot to make an emergency ejection in the full pressure suit needed for high altitude flights. Yeager has flown more than 200 types of military aircraft and has more than 14,000 hours, with more than 13,000 of them in fighter aircraft.
“Yeager retired from active duty in the U. S. Air Force in March 1975, after serving as the United States defense representative to Pakistan and director of the Air Force Inspection and Safety Center, Norton AFB, Calif.
“Retirement was never part of his plans. He remains an active aviation enthusiast, acting as adviser for various films, programs and documentaries on aviation. He has published two books, entitled Yeager, An Autobiography and Press On: Further Adventures in the Good Life.”
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.
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.
22 October 1955: At Edwards Air Force Base, in the high desert of southern California, Republic Aviation Corporation test pilot Russell M. (“Rusty”) Roth took the first of two prototype YF-105A-1-REs, serial number 54-098, for its first flight.
Though equipped with an under-powered Pratt & Whitney J57-P-25 interim engine, the new airplane was able to reach Mach 1.2 in level flight.
Aerodynamic improvements to the engine intakes and redesign of the fuselage to incorporate the drag-reducing “area rule,” along with the more powerful J75-P-5 turbojet engine allowed the production model F-105B to reach Mach 2.15.
The Thunderchief is the largest single-place, single-engine aircraft ever built. It was a Mach 2 fighter-bomber, designed for NATO defensive tactical nuclear strikes with a nuclear bomb carried in an internal bomb bay. The YF-105A was 61 feet, 5 inches (18.720 meters) long, 17 feet, 6 inches with a wing span of 34 feet, 11 inches (10.643 meters) 17 feet, 6 inches (5.334 meters) high. Its empty weight was 21,010 pounds (9,530 kilograms).
The Pratt & Whitney Turbo Wasp JT3C (J57-P-25) was a two-spool axial-flow turbojet engine with a 16-stage compressor section (9 low- and 7 high-pressure stages) and a 3-stage turbine (1 high- and 2 low-pressure stages). It produced 10,200 pounds of thrust (45.372 kilonewtons), and 17,200 pounds (76.509 kilonewtons) with afterburner.
During testing, the prototype’s maximum speed was 857 miles per hour (1,379 kilometers per hour) at 36,000 feet (10,973 meters)—Mach 1.29—and 778 miles per hour (1,252 kilometers per hour) at Sea Level—Mach 1.02. The YF-105A’s service ceiling was 49,950 feet (15,225 meters).
The Thunderchief was armed with a General Electric M61 20×102 mm six-barrel rotary cannon with 1,028 rounds of ammunition. 8,000 pounds (3,629 kilograms) of bombs could be carried in an internal bomb bay or on external hardpoints. A single free-fall B28IN variable-yield thermonuclear bomb could be carried in the bomb bay.
On 16 December 1955, YF-105A 54-098 made an emergency landing at Edwards AFB after one of its main landing gear assemblies was torn off when it failed to retract during a high speed flight. The pilot, Rusty Roth, was severely injured, but he survived. The prototype was shipped back to Republic for repair, but the cost was determined to be prohibitive.
Though designed for air-to-ground attack missions, F-105s are officially credited with 27.5 victories in air combat.
833 Thunderchiefs were built by Republic between 1955 and 1964. 334 of those were lost to enemy action during the Vietnam War. The F-105 remained in service with the United States Air Force until 1980, and with a few Air National Guard units until 1983.
5 September 1984: Space Shuttle Discovery, OV-103, completed its first space flight, STS-41-D, when it landed at Edwards Air Force Base, California, at 6:37 a.m. PDT (13:37:54 UTC), 5 September 1984. It had completed 97 orbits of the Earth. The total duration of its flight was 6 days, 56 minutes, 4 seconds.
The purpose of the mission was to place three communications satellites into orbit, and to deploy an experimental solar panel array. Various other experiments were also carried out.
The Mission Commander was Henry W. Hartsfield, Jr., making his second space flight. Shuttle Pilot Michael L. Coats was on his first. Three Mission Specialists, Richard M. Mullane, Steven A. Hawley, Judith A. Resnick, and Payload Specialist Charles D. Walker, were all on their first space flight.
A highlight of this mission was the onboard filming by the crew of footage for the IMAX film, The Dream Is Alive.
Discovery is the space shuttle fleet leader, having made 39 orbital flights, more than any other shuttle.
Mission Specialist Judith Arlene Resnick was a crew member of shuttle mission STS-51-L. She was killed when Challenger was destroyed shortly after launch, 28 January 1986.