Engineers are
problem solvers. They combine the principles of science and math with a sense
of creativity and innovation, improving society by putting STEM into action.
From building rockets to analyzing nanoparticles, the capabilities of engineers
are seemingly endless. The same is true of engineering opportunities at NASA.
National Engineers Week 2023 begins Feb.
19, and to celebrate, we’re exploring the four primary branches of engineering:
chemical, electrical, mechanical, and civil. If you’re just being introduced to
engineering, it may be hard to know where to begin, so let’s break it down!
NASA’s Space Launch System rocket, with the Orion capsule atop, slowly rolls out of the Vehicle Assembly Building at the agency’s Kennedy Space Center in Florida on March 17, 2022, on its journey to Launch Complex 39B. Credits: NASA/Kim Shiflett
Chemical Engineering
Chemical engineers rely on the
fundamentals of mathematics, chemistry, biology, and physics to conduct
research, create systems, and harness energy using chemical processes. In the
realm of space exploration, chemical engineers can take on many different roles
including researching and designing batteries for manned spaceflight and
chemically creating the thrust to launch a rocket into space.
Dr. David Delafuente is the battery safety
technical discipline lead at NASA's Johnson Space Center in Houston, where he's part of a
team that designs and develops safe, high-energy-density batteries to support
human spaceflight.
"It takes significant effort to
design and test batteries to validate they meet NASA's stringent requirements
for crewed spaceflight," said Delafuente. "We buy commercial
[batteries] and engineer how they're configured, electrically connected, and
operated to optimize their usable energy and safety."
In a clean room at NASA's Jet Propulsion Laboratory in Pasadena, California, engineers observed the first driving test for NASA's Mars 2020 rover on Dec. 17, 2019. Credits: NASA
Mechanical Engineering
Mechanical engineering is one of the broadest engineering disciplines. It involves the design, construction, operation, and testing of mechanical systems and machines. Aeronautical, aerospace, and hardware engineering are a few of the many sub-disciplines of mechanical engineering that take place at NASA.
Keith Foster works at NASA’s Wallops Flight Facility on Wallops Island, Virginia, as a payload hardware engineer for the Sounding Rocket Program, which conducts short-duration spaceflight missions to collect scientific data and tests technology for satellites and spacecrafts. These rockets typically only spend 5-20 minutes in space and are very cost effective. As a payload hardware engineer, Foster creates parts, systems, and assemblies using the principles of physics, materials, and manufacturing.
Foster has worked on payloads to test inflatable reentry coverings that help protect items returning to Earth from space, as well as a payload testing the reentry parachute design used to land the Perseverance rover on Mars.
In this 2017 photo, engineers monitor as NASA's James Webb Space Telescope is enclosed in a "clean tent" to protect the telescope from dust and dirt during testing at NASA's Goddard Space Flight Center in Greenbelt, Maryland. Credits: NASA
Aerospace and aeronautical engineering is another branch of mechanical engineering seen at NASA.
Dr. Aprille Joy Ericsson works at NASA’s Goddard Space
Flight Center in
Greenbelt, Maryland, and has used her mechanical engineering and aerospace
engineering background throughout her career. She now works as the new business
lead for instrument systems and technology.
Ericsson has supported a variety of
projects including astrophysics, planetary and Earth science, and recently, the James Webb Space Telescope. Currently, she provides technical
leadership for NASA’s small business acquisition of sensors and detectors.
“Mechanical engineering touches so many
aspects of building devices,” Ericsson said. “I liked being able to simulate
the control methods I develop and eventually able to see how well they perform
during spaceflight missions. I also like troubleshooting for problems in the
code or algorithm.”
Civil
Engineering
Civil engineers focus on the design,
construction, and maintenance of human-made structures. Civil engineers at NASA
may work as structural engineer for the International Space Station, and help to protect and upgrade the
solar arrays that power the station. They may also work with the massive crawler-transporters that carry rockets out to the launch
pad prior to liftoff, or in on-site construction and energy conservation
management at NASA centers.
Maureen De Vera Dalton joined NASA in 2013
as a civil engineer intern through NASA’s Pathways Program before transitioning
to a full-time job. She now works as the senior project manager for
Construction of Facilities at NASA’s Kennedy Space
Center in Florida, where
she has managed facility demolitions, and the refurbishment of Kennedy’s water
and wastewater systems. De Vera Dalton also designed and managed a shoreline
restoration project following Hurricanes Irma and Matthew.
“A civil engineer’s expertise at NASA’s
Kennedy Space Center is important because of the various facilities and
structures that support the spaceport daily operations and launch activities,”
Dalton said.
Engineering is an extremely rewarding pathway with unlimited opportunities. It is an ever-changing field of innovation and discovery. Interested in becoming an engineer? Visit stem.nasa.gov to discover resources and opportunities to begin your STEM career journey today!
By Megan Hale
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