Desert RATS in the Field
Desert RATS 2010: Training, Practice and Teamwork
Dean Eppler is the D-RATS Science Lead.
Total chaos – like what you've probably experienced if you've ever put on a school play, or gone on a long, complicated family vacation. That's what it's like to start up a complicated test like Desert RATS. My name is Dean Eppler, and I'm a geologist with NASA, one of the folks responsible for organizing and helping run Desert RATS. My job is something called "science operations development" – simply put, it's using my background as a field geologist and space suit test subject to figure out how we're going to do science with crewmembers on planetary bodies throughout the Solar System.
Field geology, when we do it on the Earth, is a relatively simple operation – you go out into the field, either by yourself or with a field assistant, walk the ground and find the bedrock, and enter descriptions of the rocks on your maps and in your field notebooks. In space, the environment and the ways we cope with space add complexity that takes a lot of testing and practice on Earth before we're ready to try it in space. For instance, when the Space Shuttle or International Space Station crews go into space, it's only after literally years of planning, practicing, making mistakes and re-practicing. This process of training is critical, because nobody does a complex thing like get ready for spaceflight right the first time.
The one critical element of a successful test is teamwork – a complex mission is based on many people's talents. Here in the field, we have engineers, scientists, educators, astronauts and medics, and we all need to work together to make the test work. The other critical element is patience – it takes many years of testing, training, reworking and retesting before a mission is ready to go into space, and the whole team has to be patient when things go wrong, to work each problem to get operations rolling again. Twelve days from now, our test will be over, and we will have learned many things to make next year's test successful – including how we can all work together to solve problems and achieve a common goal.
Desert RATS: Human Factors
Posted on Sep 08, 2010 01:48:59 PM
By Robert Howard and Chip Litaker
Mission day 7 finds us at the mid-point of our 14 day D-RATS mission and my team, the human factors (HF) team, has been asked to explain a little bit about what we investigate in regards to habitability of the rovers and the Habitat Demonstration Unit (HDU). The field of human factors is a systematic application of discovering information about human capabilities, characteristics, limitations, and motivation in order to design technology and procedures for people to become more productive, safe, comfortable, and effective in the environments in which they use such items.
Habitation is the space which determines the overall living and working environment for an individual within a vehicle or habitat, which affects the quality of daily life and productivity while onboard a space vehicle. With the rovers, we study over 212 operational elements of each rover, 50 of which are for habitability alone. These elements include the crew interfacing with the displays and controls, preparing a meal, exercising, driving, visibility and daily habitat operations to name a few.
The rovers are just one set of vehicles HF engineers are examining. On Mission Day 6, both rovers docked to the HDU, which simulates a working habitat called the Pressurized Excursion Module (PEM). The habitat has a geology station, a space suit maintenance station, a general maintenance station, and a medical station. While the crews are docked to the PEM, they live in the rovers and work in the PEM. The PEM is a very exciting development. The workstations allow the human crew to do many things on the moon that were previously impossible in human spaceflight.
By understanding how humans and machines interact with each other, human factors engineering in collaboration with vehicle design engineering can capture information on the design and present recommendations on how to improve the design to enhance the crew member's performance and comfort. Information provided by HF engineers lends confidence to future planetary vehicle design. Field trials such as Desert RATS give HF engineers a more realistic testing environment to investigate the various elements of habitation.
To read more Desert RATS posts from the field, visit: http://blogs.nasa.gov/cm/newui/blog/viewpostlist.jsp?blogname=analogsfieldtesting
Desert RATS Test Robotic Rover