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Science & Engineering

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Fri, March 11 2016

The "Rope Mother" Margaret Hamilton

A few years after graduating from Earlham College with a BA in Mathematics, Margaret Hamilton soon found herself in charge of software development and production for the Apollo missions to the Moon at the MIT Instrumentation Laboratory. Her work was critical to the success of the six voyages to the Moon between 1969 and 1972. In a male-dominated field, Hamilton became known as the “Rope Mother,” which was an apt description for her role and referred to the unusual way that computer programs were stored on the Apollo Guidance Computers.

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Margaret Hamilton
Wed, February 17 2016

Inventing Underwater Training for Walking in Space

Training underwater for extravehicular activity (EVA)—popularly known as spacewalking—is now critical for preparing astronauts to work in weightlessness. But when cosmonauts and astronauts first ventured outside their spacecraft 50 years ago, in 1965 and 1966, they had no such training. Spacewalking did not appear difficult, nor did space program officials think that underwater work was needed. In the United States, it took Eugene Cernan’s June 1966 Gemini IX EVA to change attitudes. Fighting against his pressurized suit, while trying to do work without adequate handholds and footholds, Cernan quickly became exhausted and overheated. Only afterward did NASA Manned Spacecraft Center in Houston reach out to a tiny company outside Baltimore: Environmental Research Associates, Inc. (ERA). Funded by another agency center, it had been experimenting with EVA simulation in a rented school pool on nights, holidays, and weekends. That project became the foundation for Houston’s first underwater training facility.

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G. Samuel Mattingly in the Orbital Workshop mockup
Fri, November 27 2015

Comparing Alan Eustace’s Spacesuit with Neil Armstrong’s

Our conservation team had the pleasure of hosting Alan Eustace, former Google executive, engineer, and stratospheric explorer, this month in the Emil Buehler Conservation Laboratory. Eustace and his StratEx team are well known for their three world records including one for the highest altitude jump at 41,422 meters (135,899 feet) in 2014. The adventurer was in town giving a lecture about his historic jump and to donate to the Museum the suit, life support, and balloon equipment module he used during the jump.

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Alan Eustace Visits the Conservation Labratory
Sat, October 17 2015

Octave Chanute and the Richard Anemometer

Many people, if not most, have never heard of Octave Chanute or know what an anemometer is, but the man and the instrument both played an important part in Orville and Wilbur Wright’s aeronautical experiments. First, some background on Chanute. Octave Chanute was a Paris-born civil engineer in the United States who played a significant role in the burgeoning field of heavier-than-air flight in the late nineteenth century.

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Richard Anemometer
Wed, October 14 2015

Apollo Guidance Computer and the First Silicon Chips

As the Apollo program took form in the early 1960s, NASA engineers always kept the safety of their astronauts at the fore in light of the enormous risks they knew were inherent in the goal of landing on the Moon and returning safely. Wherever possible, they designed backup systems so that if a primary system failed the crew would still have the means to return home safely. Sometimes creating a backup was not always practical. For example, the Service Module’s engine needed to fire while the crew was behind the Moon to place them in a trajectory that would return them to Earth. There was no practical backup if the engine failed. But even in that instance a plan was worked out to use the Lunar Module’s (LM) engine as a backup. D

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Inside of a Silicon Chip
Sat, October 10 2015

A (Tech)Quest for Inspiration

Only a few short months after I began my job as coordinator of the Explainers Program at the Steven F. Udvar-Hazy Center, the opportunity to help create a new program was on my desk....

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Sat, September 5 2015

Conserving Wiley Post’s Helmet

The experimental helmet, worn by famed American aviator Wiley Post to test the limits of high-altitude flying, can normally be seen at the Smithsonian Institution Building (The Castle) on the National Mall in Washington, DC. When white corrosion deposits were noticed on the metal, however, the helmet was removed for examination and treatment. It was sent to the Museum’s Emil Buehler Conservation Laboratory in Chantilly, Virginia.

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Post Helmet After Conservation
Sat, July 25 2015

A Triage Treatment for Apollo Biomedical Sensors

Much like medical triage, conservation triage analyzes the risk posed to an object and the hazards associated with not taking immediate action. Triage conservators ask questions such as: Can the object be handled safely by staff and researchers? Will the degradation of the object continue if it is not treated immediately? What treatment can we do, with the resources at hand, to keep this object stable as long as possible?

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Applying Acrylic Resin
Thu, June 25 2015

The NACA/NASA Full Scale Wind Tunnel

The Scene: A new wind tunnel, the NACA Full Scale Tunnel at the NACA Langley Memorial Aeronautical Laboratory, Hampton, Virginia The Time: May 27, 1931 The Action: A Navy Vought O3U-1 “Corsair II” –the whole airplane—is mounted in the wind tunnel.

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Technician Checks Fan Motor in Full Scale Wind Tunnel
Tue, May 12 2015

Did the Brooklyn Dodgers help get us to the Moon?

In his memoir Moon Lander, Grumman project manager Thomas Kelly describes the exhilaration at Grumman for winning the contract to build what became the Lunar Module (LM), followed by trepidation when the design team realized the severe weight restraints they had to work under in order to get two astronauts safely to the lunar surface and back to lunar orbit. At the outset, Grumman and NASA worked with an initial estimate of 30,200 pounds, which was within the limits of the Saturn V’s booster capability; but this began to grow ominously as the work progressed. 

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Armstrong in LM Simulator

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