Happy 98th Birthday to Katherine Johnson
“Katherine Johnson (born August 26, 1918) is an American physicist, space scientist, and mathematician who contributed to America’s aeronautics and space programs with the early application of digital electronic computers at NASA. Known for accuracy in computerized celestial navigation, she calculated the trajectory for Project Mercury and the 1969 Apollo 11 flight to the Moon.”
“Katherine Johnson was born on August 26, 1918 in White Sulphur Springs, West Virginia to Joylette and Joshua Coleman. Her mother was a teacher and her father was a farmer and janitor. From a young age, Johnson enjoyed mathematics and could easily solve mathematical equations. Her father moved Johnson’s family to Institute, West Virginia, which was 125 miles away from the family home so that Johnson and her siblings could attend school.”
“She attended West Virginia State High School and graduated from high school at age fourteen. A year later, she was a student at West Virginia State University (formerly West Virginia State College). In 1936, at age 18, Johnson graduated summa cum laude with bachelor’s degrees in French and mathematics. At that time, Dr. W.W. Schiefflin Claytor, the third African American to earn a Ph.D. degree in mathematics, created a special course in analytic geometry of space specifically for Johnson.”
Katherine Johnson (Wikipedia)
“Born in 1918 in White Sulphur Springs, W.Va., Johnson’s love for mathematics was inherent, an inclination she had from birth. At a young age, she was ready and anxious to go to school. She can vividly remember watching her older siblings go to school and wishing so much that she could go with them. The opportunity to attend school finally did come. Johnson so excelled that she began her studies in the second grade, then moved into advanced classes. By age 10, Johnson was in high school.”
“Johnson did so well in her classes that she graduated early from high school, and at age 15 she entered West Virginia State College.”
“Johnson ended up teaching after college; at that time, teaching was the only option for her in her community. She left teaching to marry and start her family. When her husband fell ill in 1952, she began to teach again. And then one day, at a family function in the 1950s, a relative mentioned to Johnson that the National Advisory Committee for Aeronautics, the predecessor to NASA, was hiring. They were specifically looking for African-American females to work as “computers” in what was then their Guidance and Navigation Department.”
Katherine Johnson: A Lifetime of STEM (NASA, 6 November 2013)
“She was a “computer” at Langley Research Center “when the computer wore a skirt,” said Johnson.”
“While on vacation from a $100-a-month teaching job in 1952, she was in Newport News (Virginia).”
“I heard that Langley was looking for black women computers."
“She was put into a pool, from which she emerged within two weeks to join engineers who, five years later, would become involved in something new called the "Space Task Force”.”
“That was 1958, when the National Advisory Committee on Aeronautics became the National Aeronautics and Space Administration.”
“We wrote our own textbook, because there was no other text about space."
"We just started from what we knew. We had to go back to geometry and figure all of this stuff out. Inasmuch as I was in at the beginning, I was one of those lucky people.”
“That luck came in large part because she was no stranger to geometry. It was only natural that she calculate the trajectory of Alan Shepherd’s 1961 trip into space, America’s first.”
“The early trajectory was a parabola, and it was easy to predict where it would be at any point."
"Early on, when they said they wanted the capsule to come down at a certain place, they were trying to compute when it should start. I said, ‘Let me do it. You tell me when you want it and where you want it to land, and I’ll do it backwards and tell you when to take off.’ That was my forte.”
“More flights became more complicated, with more variables involving place and rotation of Earth and the moon for orbiting. By the time John Glenn was to go up to orbit the Earth, NASA had gone to computers.”
“You could do much more, much faster on computer.”
“But when they went to computers, they called over and said, 'tell her to check and see if the computer trajectory they had calculated was correct.’ So I checked it and it was correct.”
She Was a Computer When Computers Wore Skirts (NASA, 26 August 2008)
“According to oral history archived by the National Visionary Leadership Project:
“At first she worked in a pool of women performing math calculations. Katherine has referred to the women in the pool as virtual `computers who wore skirts.’ Their main job was to read the data from the black boxes of planes and carry out other precise mathematical tasks. Then one day, Katherine (and a colleague) were temporarily assigned to help the all-male flight research team. Katherine’s knowledge of analytic geometry helped make quick allies of male bosses and colleagues to the extent that,'they forgot to return me to the pool.’ While the racial and gender barriers were always there, Katherine says she ignored them. Katherine was assertive, asking to be included in editorial meetings (where no women had gone before.) She simply told people she had done the work and that she belonged.”
“From 1953 through 1958, Johnson worked as a computer mathematician. From 1958 until she retired in 1983, she worked as an aerospace technologist. She began her work in the all-male Flight Mechanics Branch and later moved to the Spacecraft Controls Branch. She calculated the trajectory for the space flight of Alan Shepard, the first American in space, in 1959. She also calculated the launch window for his 1961 Mercury mission. She plotted backup navigational charts for astronauts in case of electronic failures. In 1962, when NASA used computers for the first time to calculate John Glenn’s orbit around Earth, officials called on her to verify the computer’s numbers.“
“Ms. Johnson later worked directly with digital computers. Her ability and reputation for accuracy helped to establish confidence in the new technology.”
“She calculated the trajectory for the 1969 Apollo 11 flight to the Moon. Johnson worked on Apollo 13’s mission to the Moon. Once the mission was aborted, Johnson’s work on backup procedures and charts helped safely return the crew to Earth four days later. Later in her career, she worked on the Space Shuttle program, the Earth Resources Satellite, and on plans for a mission to Mars.”
Katherine Johnson (Wikipedia)