This Space Available

By Emily Carney

Once upon a time…

At this point in our story, the mid-Seventies were in full swing at NASA, and preparations for the Apollo-Soyuz Test Project were well in gear. In late 1974, NASA was already laying the groundwork for its next big space endeavor, the Space Transportation System – better known as the Space Shuttle, the delta-winged “space truck” that was conceptualized to serve as dual low-cost cargo freighter, and high-tech science platform. Human-helmed, long-duration Skylab space station missions, which were comprised of all-male crews, had ended in February that year. The European space program, not yet named ESA, was beginning to formulate its vision for a German-built onboard lab that would be nestled within the Shuttle’s payload bay. And with this new program in development, a new kind of astronaut-scientist would be needed.

This program, Spacelab, would require on-Earth verification; according to the book NASA’s Scientist-Astronauts by David J. Shayler and Colin Burgess, “At the Marshall Space Flight Center (MSFC) in Huntsville, Alabama, a Concept Verification Test (CVT) programme was assembled on 25 July 1973, with the aim of simulating high data-rate experiments on the ground to test data compression techniques. These also included data interaction and onboard processing.” The TDRS system would need to be in place before Spacelab missions flew, ensuring high data rates could be ably captured; the ATS-6 satellite would be used as a test platform for that program during Apollo-Soyuz in July 1975.

NASA photo, 1974. “In another first for NASA, an all-female crew of scientific experimenters began a five-day exercise on December 16, 1974, to test the feasibility of experiments that were later tested on the Space Shuttle/Spacelab missions. The experimenters, Dr. Mary H. Johnston (seated, left), Ann F. Whitaker and Carolyn S. Griner (standing, left to right), and the crew chief, Doris Chandler, spent spend eight hours each day of the mission in the Marshall Space Flight Centers General Purpose Laboratory (GPL). They conducted 11 selected experiments in materials science to determine their practical application for Spacelab missions and to identify integration and operational problems that might occur on actual missions. Inside the GPL, the four women worked under conditions simulating, as nearly as practical, those that would exist in a space station in Earth orbit, excepting, of course, weightlessness. Air circulation, temperature, humidity and other factors were carefully controlled. The test was conducted at NASAs Marshall Space Flight Center, Huntsville, AL, where the GPL is part of the centers Concept Verification Test (CVT), a project oriented to reducing future costs of experimentation in space by involving potential experimenters early in the development cycle of their hardware.”

A high-fidelity mock up of Spacelab was assembled at MSFC during 1974, and according to Shayler and Burgess, “[a] Preliminary Requirements Review for the new simulator was held on 29-30 May 1974.” This test program would enable “participation by principal investigators who were developing potential experiments for Spacelab missions. This would allow them to test hardware, techniques, and interfaces in order to verify their operation prior to assignment to specific missions.”

As soon as the CVT program Spacelab mock up was completed, there was little delay in getting its Earth analogue missions underway. The history of Earth analogue missions is a subject this author needs to explore in greater detail, but three notable ones held during the late 1960s and early 1970s, sanctioned by NASA, included LTA-8 (crewed Lunar Module test, 1968), 2TV-1 (crewed Command Module test, 1968), and the Skylab Medical Experiment Altitude Test (abbreviated SMEAT, 1972). These “missions” were all male, boasting astronaut names including Jim Irwin, Joe Engle, Joe Kerwin, Vance Brand, and perennial Shuttle flier Bob Crippen, to name a few.

But one Spacelab analogue, held from December 16 through 21, 1974, was crewed by all women…moreover, all women scientists. Shayler and Burgess wrote, “CVT Test No. 4…was a five-day simulated Spacelab mission with eleven materials sciences experiments that the four female crew members had developed. These four women, all employees of Marshall Space Flight Center, were Ann F. Whitaker, Carolyn S. Griner, Mary Helen Johnston, and Doris Chandler.”

NASA photo, 1974. “Dr. Mary Johnston, Carolyn Griner and Dr. Ann Whitaker (left to right), scientists at the Marshall Space Flight Center, complete a training session in the MSFC’s Neutral Buoyancy Simulator, a facility used to simulate weightlessness. The scuba diving is part of special training the three took to better qualify them for their duties of designing experiments on materials processing in space. The training increased their understanding of the problems associated with doing experiments in space, such as aboard Spacelab. Dr. Johnston specializes in metallurgical engineering, Carolyn Griner in materials sciences, and Ann Whitaker in lubrication and surface physics. Carolyn Griner continued her career at MSFC, serving as the director of the Mission Operations Laboratory. In 1994 she was appointed as Deputy Director of MSFC, and for 9 months in 1998 served as acting Director. She retired from NASA in December 2000. Over a 16-year period Dr. Ann Whitaker served at NASA as chief of the Physical Sciences Branch, the Engineering Physics Division, and the Project and Environmental Engineering Division. In 1995 she served in several leadership positions in Marshall’s Science and Engineering Directorate. In September 2001, Dr. Whitaker was named director of the Science Directorate at MSFC.”

The inclusion of four women scientists in this 1974 Earth analogue flies in the face of some erroneous reporting and attitudes that there were no women “qualified” to fly into space until 1978, when the first six women were, at long last, selected to NASA’s astronaut corps. As this author wrote in a Space Review piece published earlier this year, “There was no real reason why women were excluded from eligibility as Apollo astronauts…There were women scientists and engineers who existed during the 1960s who, if they had been allowed to enter Air Force flight training, likely could have qualified as pilots next to male astronaut-scientist colleagues, and therefore could have met astronaut qualifications. If scientists like Harrison Schmitt could qualify to fly on Apollo, there is no reason that women could not.” Likewise, if a solar physicist such as Dr. Ed Gibson could qualify to fly a long-duration Skylab mission, there was no reason that similarly qualified women could not.

NASA photo, date unknown: “Candid shots of Carolyn Griner, Dr. Mary Helen Johnston, and Dr. Ann Whitaker (clockwise from front) wearing scuba gear at the Neutral Buoyancy Simulator for training.”

But back to CVT Test No. 4. Shayler and Burgess continued, “This simulation provided a wealth of data on the benefits of having a scientifically trained crew aboard the facility to identify and repair minor malfunctions. In a 1976 report of this test, it was stated: ‘The value of the well trained scientist crew was emphasized during the test. Had it not been for the extremely knowledgeable science crew, two experiments at least would have been lost early in the simulation. [They] were saved by their knowledge of both the hardware and the science that was to be obtained.’”

The CVT program would last through 1976, but fell victim – not surprisingly – to mid-1970s budget cuts. These analogue missions would also hardly be the end of Spacelab simulations (for more information about the entirety of Spacelab, please read NASA’s Scientist-Astronauts and NASA History’s publication Spacelab: An International Short-Stay Orbiting Laboratory). The first actual Spacelab mission, STS-9, wouldn’t launch until late 1983, and the first woman aboard a Spacelab flight wouldn’t fly until 1985 (Dr. Bonnie Dunbar, aboard October 1985’s STS-61A/Spacelab D1 mission).

More sadly, none of the women of the fourth CVT test would fly in space, although Dr. Mary Helen Johnston would come the closest, having been selected as a reserve payload specialist for the STS-51B Spacelab 3 mission. Carolyn Griner, who joined MSFC in 1964, according to NASA, would become “the Acting Director of the NASA Marshall Space Flight Center from January 3, 1998 to September 11, 1998, between the terms of the eighth and ninth Directors. Before and after her term as Acting Director, she was Deputy Director of the Marshall Center.” Whitaker also went on to have a successful career, according to NASA: “Over a 16-year period Dr. Ann Whitaker served at NASA as chief of the Physical Sciences Branch, the Engineering Physics Division, and the Project and Environmental Engineering Division. In 1995 she served in several leadership positions in Marshall’s Science and Engineering Directorate. In September 2001, Dr. Whitaker was named director of the Science Directorate at MSFC.”

CVT Test No. 4 lasted only five days, and only a handful of incredible photos linger from this late 1974 sojourn when women scientists more than proved their mettle. However, this short mission left powerful resonances. At present time, astronaut Megan McArthur is in the midst of a long-duration mission aboard the International Space Station (ISS), and a number of women astronaut-scientists have flown – and flourished – aboard the Space Shuttle, the Mir space station, and the ISS. Current Earth analogue missions – including HI-SEAS – now show that these type of simulations must be inclusive.

Featured Photo Credit: “Women scientists in training at Marshall Space Flight Center, (top to bottom) Carolyn Griner, Ann Whitaker, and Dr. Mary Johnston, are shown simulating weightlessness while undergoing training in the Neutral Buoyancy Simulator. These women were part of a special program dedicated to gaining a better understanding of problems involved in performing experiments in space. The three were engaged in designing and developing experiments for space, such as materials processing for Spacelabs. Dr. Johnston specialized in metallurgical Engineering, Dr. Whitaker in lubrication and surface physics, and Dr. Griner in material science. Dr. Griner went on to become Acting Center Director at Marshall Space Flight Center from January to September 1998. She was the first woman to serve.” (NASA photo)


Emily Carney is a writer, space enthusiast, and creator of the This Space Available space blog, published since 2010. In January 2019, Emily’s This Space Available blog was incorporated into the National Space Society’s blog. The content of Emily’s blog can be accessed via the This Space Available blog category.

Note: The views expressed in This Space Available are those of the author and should not be considered as representing the positions or views of the National Space Society.

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