On this episode of NASA X, we follow members of the Environmentally Responsible Aviation team as they conduct a variety of tests on exciting, new aircraft designs that are in the early stages of development. See how these initial designs and ideas are moved through the NASA pipeline from computer drawings and wind tunnel models, all the way to scale-model aircraft and full-scale flights. Each new step brings us closer to flying onboard revolutionary aircraft that are safer, more efficient, and quieter.