Amelia Earhart prepares to leave Burbank, California, 21 May 1937.
21 May 1937: Day 2 of Amelia Earhart’s second attempt to fly around the world aboard her Lockheed Electra 10E, NR16020. She and her navigator, Fred Noonan, fly from Union Air Terminal, Burbank, California, to Tucson, Arizona, where they stopped to refuel. Earhart’s husband, George Palmer Putnam, and aircraft mechanic Ruckins D. “Bo” McKneely were also aboard. ¹
When Earhart attempted to restart the left engine at Tucson, it caught fire. An unplanned overnight stay was required while the damage was repaired.
“Accompanying me on this hop across the continent was Fred Noonan. “Bo” McKneely my mechanic, and Mr. Putnam. A leisurely afternoon’s flight ended at Tucson, Arizona. The weather was sailing hot as Arizona can be in summertime. After landing and checking in, when I started my motors again to taxi to the filling pit the left one back-fired and burst into flames. For a few seconds it was nip-and-tuck whether the fire would get away from us. There weren’t adequate extinguishers ready on the ground but fortunately the Lux apparatus built in the engine killed the fire. The damage was trivial, mostly some pungently cooked rubber fittings a deal of dirty grime. The engine required a good cleaning and the ship a face-washing.”
—Amelia Earhart
¹ Although the standard Lockheed Electra 10E was certified to carry up to 10 passengers, the Restricted certification of NR16020 limited it to, “Only bona fide members of the crew to be carried.” The presence of Putnam and McKneely violated this restriction.
Great Circle route from the location of the former Union Air Terminal (now, Hollywood-Burbank Airport) to Davis-Monthan AFB, Tucson, Arizona: 396 nautical miles (455 statute miles/733 kilometers). (Great Circle Mapper)
The Spirit of St. Louis arrives at Le Bourget Aerodrome, 21 May 1927. (San Diego Air and Space Museum Archives)
After a flight of 33 hours, 30 minutes, 30 seconds, from Roosevelt Field, Long Island, New York, United States of America, Charles A. Lindbergh lands his Spirit of St. Louis at Le Bourget Aerodrome, Paris, France, at 10:22 p.m. (20:22 G.M.T.), 21 May 1927. He is the first pilot to fly solo, non-stop, across the Atlantic Ocean.
“I circle. Yes, it’s definitely an airport. . . It must be Le Bourget. . . I shift fuel valves to the center wing-tank, sweep my flashlight over the instrument board in a final check, fasten my safety belt, and nose the Spirit of St. Louis down into a gradually descending spiral. . .
“I straighten out my wings and let the throttled engine drag me on beyond the leeward border. Now the steep bank into the wind, and the dive toward the ground. But how strange it is, this descent. I’m wide awake, but the feel of my plane has not returned. . . My movements are mechanical, uncoordinated, as though I were coming down at the end of my first solo. . .
“It’s only a hundred yards to the hangars now — solid forms emerging from the night. I’m too high — too fast. Drop wing — left rudder — sideslip — — — Careful — mustn’t get anywhere near the stall — — — I’ve never landed the Spirit of St. Louis at night before. . . Below the hangar roofs now — — — straighten out — — — A short burst of the engine — — — Over the lighted area — — — Sod coming up to meet me. . . Still too fast — — — Tail too high — — — The wheels touch gently — off again — No, I’ll keep contact — Ease the stick forward — — — Back on the ground — Off — Back — the tail skid too — — — Not a bad landing. . . .”
— The Spirit of St. Louis, by Charles A. Lindbergh, Charles Scribner’s Sons, 1953, Pages 489–492.
Lindbergh established a Fédération Aéronautique Internationale (FAI) World Record for Distance in a Straight Line Without Landing of 5,809 kilometers (3,310 miles). ¹
Over 100,000 people have come to Le Bourget to greet Lindbergh. He has flown the Spirit of St. Louis into history.
Crowds mob Spirit of St. Louis at Le Bourget Aerodrome, shortly after Charles A. Lindbergh’s arrival from New York, 21 May 1927. The crowd soon swelled to over 100,000 people. (Keystone-France/Gamma-Keystone/Getty Images)
¹ FAI Record File Number 14842
Great Circle route from the location of the former Roosevelt Field to Le Bourget, Paris: 3,145 nautical miles (3,619 statute miles/5,825 kilometers). (Great Circle Mapper)
Apollo 11/Saturn V (AS-506) and its Mobile Launch Platform on one of the two Crawler–Transporters at Kennedy Space Center, Cape Canaveral, Florida, 20 May 1969. (NASA)
20 May 1969: The Apollo 11 Saturn V (SA-506) “stack” was rolled out of the Vehicle Assembly Building aboard a Mobile Launch Platform, carried by a Crawler-Transporter, and moved to Launch Complex 39A. The rocket would be launched for the Moon at 13:32:00 UTC, 16 July 1969.
The two Crawler-Transporters are the world’s largest self-propelled land vehicles. They were designed and built by Marion Power Shovel Company, Marion, Ohio, and were assembled on Merritt Island. (The Crawlerway connected the island to mainland Florida, so that it now forms a peninsula.) They are 131 feet (39.9 meters) long and 113 feet (34.4 meters) wide. The height is adjustable from 20 feet (6.1 meters) to 26 feet (7.9 meters). The load deck is 90 feet × 90 feet (27.4 × 27.4 meters). The transporters weigh 2,721 metric tons (3,000 tons).
A Crawler-Transporter carrying a Mobile Launch Platform. (NASA)
The Crawler-Transporters were powered by two 10,687.7-cubic-inch-displacement (175.1 liters) liquid-cooled, turbosupercharged, American Locomotive Company (ALCO) V-16 251C 45° sixteen-cylinder 4-cycle diesel engines. This engine produced 2,750 horsepower. The engines drive four 1,000 kilowatt electric generators. These in turn supply electricity to sixteen 375 horsepower traction motors.
Two 1,065 horsepower White-Superior eight-cylinder diesel engines provide electrical and hydraulic power to operate the crawlers’ systems. The hydraulic system operates at 5,200 p.s.i.
The maximum loaded speed is 0.9 miles per hour (1.4 kilometers per hour).
Since the time of the Apollo and Space Shuttle Programs, the Crawler-Transporters have been upgraded to handle the Space Launch System (SLS) heavy-lift rockets. The original ALCO locomotive engines have been replaced by two Cummins QSK95 16-cylinder diesel/C3000-series 1,500 kW power generation units. The new engine displaces 5,797 cubic inches and produces a maximum 4,200 horsepower at 1,200 r.p.m. The QSK95 has 46% less displacement than the old ALCO, weighs 39% less, but produces 57% more horsepower. The generators also double the electrical output.
Inside the Vehicle Assembly Building, a Cummins power generation unit is lowered into a Crawler-Transporter. (NASA)
The Saturn V rocket was a three-stage, liquid-fueled heavy launch vehicle. Fully assembled with the Apollo Command and Service Module, it stood 363 feet (110.642 meters) tall. The first and second stages were 33 feet (10.058 meters) in diameter. Fully loaded and fueled the rocket weighed 6,200,000 pounds (2,948,350 kilograms). It could lift a payload of 260,000 pounds (117,934 kilograms) to Low Earth Orbit.
A Saturn V S-IC first stage being lifted inside the Vehicle Assembly Building. (NASA 68-HC-70)
The first stage was designated S-IC. It was designed to lift the entire rocket to an altitude of 220,000 feet (67,056 meters) and accelerate to a speed of more than 5,100 miles per hour (8,280 kilometers per hour). The S-IC stage was built by Boeing at the Michoud Assembly Facility, New Orleans, Louisiana. It was 138 feet (42.062 meters) tall and had an empty weight of 290,000 pounds (131,542 kilograms). Fully fueled with 203,400 gallons (770,000 liters) of RP-1 and 318,065 gallons (1,204,000 liters) of liquid oxygen, the stage weighed 5,100,000 pounds (2,131,322 kilograms). It was propelled by five Rocketdyne F-1 engines, producing 1,522,000 pounds of thrust, each, for a total of 7,610,000 pounds of thrust at Sea Level. These engines were ignited seven seconds prior to lift off and the outer four burned for 168 seconds. The center engine was shut down after 142 seconds to reduce the rate of acceleration. The F-1 engines were built by the Rocketdyne Division of North American Aviation at Canoga Park, California.
A Saturn V S-II second stage being positioned above the S-IC first stage. (NASA MSFC-67-58331)
The S-II second stage was built by North American Aviation at Seal Beach, California. It was 81 feet, 7 inches (24.87 meters) tall and had the same diameter as the first stage. The second stage weighed 80,000 pounds (36,000 kilograms) empty and 1,060,000 pounds loaded. The propellant for the S-II was liquid hydrogen and liquid oxygen. The stage was powered by five Rocketdyne J-2 engines, also built at Canoga Park. Each engine produced 232,250 pounds of thrust, and combined, 1,161,250 pounds of thrust.
A Saturn V S-IVB third stage with its Rocketdyne J-2 engine. ( NASA)
The Saturn V third stage was designated S-IVB. It was built by McDonnell Douglas Astronautics Company at Huntington Beach, California. The S-IVB was 58 feet, 7 inches (17.86 meters) tall with a diameter of 21 feet, 8 inches (6.604 meters). It had a dry weight of 23,000 pounds (10,000 kilograms) and fully fueled weighed 262,000 pounds. The third stage had one J-2 engine and also used liquid hydrogen and liquid oxygen for propellant. The S-IVB wou place the Command and Service Module into Low Earth Orbit, then, when all was ready, the J-2 would be restarted for the Trans Lunar Injection.
Eighteen Saturn V rockets were built. They were the most powerful machines ever built by man.
Saturn V SA-506 travels the 3.5 mile “crawlerway” from the Vehicle Assembly Building to Launch Complex 39A, 20 May 1969. (NASA)
20 May 1967: Colonel Robin Olds, USAF, commanding officer of the 8th Tactical Fighter Wing based at Ubon Rachitani Royal Thai Air Force Base, and Weapons System Officer 1st Lieutenant Stephen B. Croker, destroyed two Vietnam People’s Air Force MiG-17 fighters with AIM-7 Sparrow radar-guided and AIM-9 Sidewinder heat-seeking air-to-air missiles while flying McDonnell F-4C-24-MC Phantom II, serial number 64-0829, named SCAT XXVII.
An official U.S. Air Force history publication describes the air battle:
Two other MiG-17s became the victims of Col. Robin Olds and his pilot, 1st. Lt. Stephen B. Croker. [Note: at this point in time, the WSOs of USAF F-4Cs were fully-rated pilots.—TDiA] These were aerial victories three and four for Olds, making him the leading MiG-killer at that time in Southeast Asia. An ace from World War II, the 8th TFW commander was battle-tested and experienced. Olds termed the events of 20 May “quite a remarkable air battle.” According to his account:
F-105s were bombing along the northeast railroad; we were in escort position, coming in from the Gulf of Tonkin. We just cleared the last of the low hills lying north of Haiphong, in an east-west direction, when about 10 or 12 MiG-17s came in low from the left and, I believe, from the right. They tried to attack the F-105s before they got to the target.
Mikoyan Gurevich MiG-17F in Vietnam People’s Air Force markings at the National Museum of the United States Air Force, Wright-Patterson Air Force Base, Ohio. (U.S. Air Force).
We engaged MiG-17s at approximately 15 miles short of the target. The ensuing battle was an exact replica of the dogfights in World War II.
Our flights of F-4s piled into the MiGs like a sledge hammer, and for about a minute and a half or two minutes that was the most confused, vicious dogfight I have ever been in. There were eight F-4Cs, twelve MiG-17s, and one odd flight of F-105s on their way out from the target, who flashed through the battle area.
Quite frankly, there was not only danger from the guns of the MiGs, but the ever-present danger of a collision to contend with. We went round and round that day with the battles lasting 12 to 14 minutes, which is a long time. This particular day we found that the MiGs went into a defensive battle down low, about 500 to 1,000 feet. In the middle of this circle, there were two or three MiGs circling about a hundred feet—sort of in figure-eight patterns. The MiGs were in small groups of two, three, and sometimes four in a very wide circle. Each time we went in to engage one of these groups, a group from the opposite side would go full power, pull across the circle, and be in firing position on our tails almost before we could get into firing position with our missiles. This was very distressing, to say the least.
The first MiG I lined up was in a gentle left turn, range about 7,000 feet. My pilot achieved a boresight lock-on, went full system, narrow gate, interlocks in. One of the two Sparrows fired in ripple guided true and exploded near the MiG. My pilot saw the MiG erupt in flame and go down to the left.
Colonel Robin Olds flew this McDonnell F-4C-24-MC Phantom II, 64-0829, SCAT XXVII, when he and 1st Lieutenant Stephen B. Croker shot down two VPAF MiG-17s near Haiphong, North Vietnam, 20 May 1967. (U.S. Air Force)
We attacked again, trying to break up that defensive wheel. Finally, once again, fuel considerations necessitated departure. As I left the area by myself, I saw that lone MiG still circling and so I ran out about ten miles and said that even if I ran out of fuel, he is going to know he was in a fight. I got down on the deck, about 50 feet, and headed right for him. I don’t think he saw me for quite a while. But when he did, he went mad, twisting, turning, dodging and trying to get away. I kept my speed down so I wouldn’t overrun him and I stayed behind him. I knew he was either going to hit that ridge up ahead or pop over the ridge to save himself. The minute he popped over I was going to get him with a Sidewinder.
I fired one AIM-9 which did not track and the MiG pulled up over the ridge, turned left and gave me a dead astern shot. I obtained a good growl. I fired from about 25 to 50 feet off the grass and he was clear of the ridge by only another 50 to 100 feet when the Sidewinder caught him.
The missile tracked and exploded 5 to 10 feet to the right side of the aft fuselage. The MiG spewed pieces and broke hard left and down from about 200 feet. I overshot and lost sight of him.
I was quite out of fuel and all out of missiles and pretty deep in enemy territory all by myself, so it was high time to leave. We learned quite a bit from this fight. We learned you don’t pile into these fellows with eight airplanes all at once. You are only a detriment to yourself.
— Aces and Aerial Victories: The United States Air Force in Southeast Asia 1965–1973, by R. Frank Futrell, William H. Greenhalgh, Carl Grubb, Gerard E. Hasselwander, Robert F. Jakob and Charles A. Ravenstein, Office of Air Force History, Headquarters USAF, 1976, Chapter II at Pages 59–60.
Colonel Robin Olds, 8th Tactical Fighter Wing, with SCAT XXVII, his McDonnell F-4C-24-MC Phantom II, 64-0829, at Ubon Rachitani RTAFB, 1967. U.S. Air Force)Fighter pilot Brigadier General Robin Olds, U.S. Air Force (Retired) with SCAT XXVII at the National Museum of the United States Air Force. General Olds died 14 June 2007. (U.S. Air Force)Robin Olds’ McDonnell F-4C-24-MC Phantom II, 64-0829, SCAT XXVII, at the National Museum of the United States Air Force, Wright-Patterson Air Force Base, Dayton, Ohio.
North American Aviation P-86A-1-NA Sabre 47-605, the first production aircraft. (U.S. Air Force)
20 May 1948: The first production North American Aviation, Inc., P-86A-1-NA, 47-605, made its first flight.
The P-86A-1-NA was very similar to the three XP-86 prototypes. As an operational fighter, its empty weight increased 347 pounds to 10,077 pounds. The Chevrolet J35-C-3 and Allison J35-A-5 engines were replaced with a more powerful General Electric J47-GE-1. The fighter’s maximum speed increased 74 miles per hour to 673 miles per hour at Sea Level.
The P-86 was unlike any airplane before it. (The designation was changed to F-86 the following month.) It was the first airplane produced with a swept wing. After analyzing World War II test data for the Messerschmitt Me 262, North American’s engineers designed a wing with a 35° degree sweepback to its leading edge. The wing sweep allowed high speed shock waves to form without stalling the entire wing. The wing tapered toward the tips, and its thickness also decreased from the root to the tip. In order to create a very strong but very thin wing, it was built with a two-layered aluminum skin, instead of ribs and spars, with each layer separated by “hat” sections. The thickness of the skin panels also tapered to decrease weight.
Cutaway illustration XP-86 concept. The side speed brakes were altered in production and the ventral brake eliminated. (North American Aviation, Inc.)
The wing incorporated leading edge “slats” which were airfoil sections that automatically extended below 290 knots, smoothing the air flow over the wing’s upper surface and creating more lift at slow speeds. Above that speed, aerodynamic forces closed the slats, decreasing drag and allowing for higher speeds. Effectively, the wing could change its shape in flight.
Like the XP-86, the P-86A was 37 feet, 6.5 inches (11.443 meters) long with a wingspan of 37 feet, 1.4 inches (11.313 meters) and overall height of 14 feet, 8.9 inches (4.493 meters). The empty weight was 10,077 pounds (4,571 kilograms), gross weight, 14,050 pounds (6,373 kilograms) and maximum takeoff weight was 15,876 pounds (7,201 kilograms).
The J47-GE-1 was an axial-flow turbojet with a 12-stage compressor, 8 combustion chambers, and single stage turbine. It had a normal power rating of 4,320 pounds of thrust (19.216 kilonewtons) at 7,370 r.p.m.; and military power, 5,200 pounds (23.131 kilonewtons) at 7,950 r.p.m. (30-minute limit).
The P-86A had an initial rate of climb 7,470 feet per minute (37.95 meters per second) and could reach 40,000 feet (12,192 meters) in 10 minutes, 24 seconds. Its service ceiling was 48,000 feet (14,630 meters).
North American Aviation F-86A-5-NA 48-273. Note the gun port doors on this early production aircraft. They opened in 1/20 second as the trigger was pressed. Proper adjustment was complex and they were soon eliminated. (U. S. Air Force)
The Sabre was armed with six Browning AN-M3 .50-caliber aircraft machine guns placed in the nose, with three on either side of the engine intake. These were lighter and had a higher rate of fire than the World War II AN-M2 machine guns. Ammunition containers had a capacity of 300 rounds, but normally they carried 267 rounds per gun. Early aircraft had small doors covering each gun port. They opened in 0.05 seconds but were difficult to keep properly adjusted, so they were soon deleted.
The airplane could also be armed with two bombs and up to sixteen 5-inch (12.7 centimeter) High Velocity Aerial Rockets (HVAR) on underwing hardpoints.
North American Aviation built thirty-three P-86A-1-NAs. The U.S. Air Force ordered 190 F-86Bs, but these were cancelled in favor of the F-86A-5-NA.
The F-86A became operational with the 1st Fighter Group at March Air Force Base, near Riverside, California. In February 1949, a contest was held within the group to select a name for the new fighter. “Sabre” was chosen.
47-605 was the first production P-86A-1-NA Sabre. (U.S. Air Force)
