Suit Pressure Evaluations on POGO, NBL, NEEMO, Parabolic Flight
Responsible HRP Element:
Human Health Countermeasures
Completed - Task has been completed
This task aims to identify an acceptable range of suit pressures that will allow crewmembers to perform tasks, ranging from gross ambulation to fine dexterity tasks (e.g., actuating toggle switches) effectively while wearing the EVA suit. Consumables will be limited during exploration missions, and use of a higher pressure in the suit would conserve these consumables. As a result, vehicle designers and flight controllers may be tempted to recommend higher pressures in the suit than would be optimal for crewmembers to easily perform critical tasks. Such higher pressures may lead to fatigue or injury if crewmembers must work against the pressure for an extended period of time. Therefore, these studies aim to identify a range of acceptable pressures for given situations that preserve crews’ capability to perform necessary functions. The following studies have been completed to address this task: Constellation Program (CxP) EVA Systems SE&I FY'07 Test 1 - "Metabolic Costs and Biomechanics of a Planetary Suit"; Constellation Program (CxP) EVA Systems SE&I FY-07 Test 2 - "Metabolic Costs and Biomechanics of Exploration Tasks in a Planetary Suit". Pending future exploration missions, additional studies may be required.
These studies are being coordinated and performed by a cross-center team that includes personnel from Constellation EVA Systems Project Office, and Life Sciences (ABF, EPSP, ECP, Neurosciences).