National Aeronautics and Space Administration Thoughts on Scientific & Engineer Methods Dr. Robert...
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Transcript of National Aeronautics and Space Administration Thoughts on Scientific & Engineer Methods Dr. Robert...
National Aeronautics andSpace Administration
Thoughts on Scientific & Engineer Methods
Dr. Robert F. Hodson Deputy Chief Engineer
NASA Langley Research Center
6/3/2015
The Scientific & Engineering Methods
• Science Question Research Hypothesis Test your hypothesis through experimentation Analyze data and draw a conclusion REPEAT
• Engineering Identify problem Research Develop solutions Select best possible solution Test and verify Redesign if necessary
Trial Result
1 Hypothesis False
2 Hypothesis False…
n Hypothesis False
n+1 Hypothesis True… Success!
6/3/2015
Yes, effective but only part of the process
Challenge
Intuition
Observation
Wonder
Curiosity
Creativity
Passion
Imagination
Inspiration
Scientific and
Engineering Methods
Discovery
Purpose
Direction
Knowledge
Fulfillment
Communication
Collaboration
6/3/2015
NASA Challenge: Radiation
Radiation from the sun and galactic cosmic rays can increase cancer risk in astronauts and upset or damage electronics and
other systems.
6/3/2015
Challenge: Gravity (or lack of)
Micro-gravity can cause bone loss (~1%/month) and impacts muscle strength, cardiac function, balance, vision, blood
volume etc.
6/3/2015
Challenge: Propulsion
45,000 kg Payload toTrans Lunar Injection
TLI Payload to rocket mass = 1.6%
5809 kg payload return to Earth
Return mass to rocket mass = 0.2%
2.8 million kg
Overcoming Earth’s gravity is not trivial.We take long trips and there are no gas stations along the way. We need better gas mileage.
6/3/2015
Challenge: Power
Power generation and storage are needed for life support systems, electric propulsion, processing, and communication.
Orion with solar arrays deployed Electric propulsion
6/3/2015
Challenges: Logistics, Supply
Perishables perish, parts wear out, comm to Earth is delayed. Even sea travelers can fish and get water from rain.
6/3/2015
We need to “Open the Trade Space”
Where many engineers feel comfortable…
Thinking inside the Box
Clearly this picture was not done by an engineer
6/3/2015
Innovative Solutions
R5 disaster response robotR2 – currently on ISS
13
Exoskeleton for health monitoring and assist