Simplified Aid For EVA Rescue

== Description ==

== Description ==

SAFER is fitted around the life support backpack (PLSS) of the space suit (EMU or [[Extravehicular Mobility Unit]]) using hardpoints, in a same manner as MMU unit. SAFER in no way interferes with suit mobility. The flight test unit was fitted with a single hand control module rigidly attached to the Display and Control Module (DCM) in front of the suit. The hand controller provided six degrees-of-freedom (DOF) maneuvering via 24 gaseous-nitrogen (GN2) thrusters. Additionally SAFER is outfitted with auto-pilot system designed to stop rotation and maintain orientation. The device weight is 37,7 kg (85 pounds), more than 114kg (250 lb) lighter than MMU. The GN2 is stored in four cylindrical tanks, compressed to 224 bar (3250 psi). Total fuel capacity is 1.4 kg (3 pounds), which is sufficient to change the vehicle velocity ΔV 3.05 m/s (10 feet/second) ). In addition to NASA's EMU space suits, SAFER was developed to be used with Russian [[Orlan space suit]]. The unit features very extensive [[self-test]] capability.{{Cite journal |last=Meade |first=Carl |date=October 1995 |title=First Flight Test Result of the Simplified Aid For EVA Rescue (SAFER) Propulsion Unit |url=https://www.researchgate.net/publication/319601444 |journal=International Space Station}}

SAFER is fitted around the life support backpack (PLSS) of the space suit (EMU or [[Extravehicular Mobility Unit]]) using hardpoints, in the same manner as the MMU unit. SAFER in no way interferes with suit mobility. The flight test unit was fitted with a single hand control module rigidly attached to the Display and Control Module (DCM) in front of the suit. The hand controller provided six degrees-of-freedom (DOF) maneuvering via 24 gaseous-nitrogen (GN2) thrusters. Additionally SAFER is outfitted with an auto-pilot system designed to stop rotation and maintain orientation. The device weight is 37.7 kg (85 pounds), more than 114kg (250 lb) lighter than MMU. The GN2 is stored in four cylindrical tanks, compressed to 224 bar (3250 psi). Total fuel capacity is 1.4 kg (3 pounds), which is sufficient to change the vehicle velocity ΔV 3.05 m/s (10 feet/second). In addition to NASA's EMU space suits, SAFER was developed to be used with Russian [[Orlan space suit]]s. The unit features very extensive [[self-test]] capability.{{Cite journal |last=Meade |first=Carl |date=October 1995 |title=First Flight Test Result of the Simplified Aid For EVA Rescue (SAFER) Propulsion Unit |url=https://www.researchgate.net/publication/319601444 |journal=International Space Station}}

==Application==

==Application==