Start Date
4-1987 8:00 AM
Description
This paper describes the main design features incorporated in the European Space Agency's Man-Tended Free Flyer which enable the MTFF to be operational on-orbit for a 30 year period via servicing and maintenance. The MTFF is to be serviced at the Station or by Hermes every 6 months in one of two ways - using man in the Pressurized Module and using robotics for the external equipment of the PM and the Resource Module. EVA is a contingency back-up to the latter. Crew servicing inside the PM is enhanced by the proper attention to design details allowing good access to the payload and subsystem equipment in the same manner as for the Attached Modules of the Station, that is by mounting all equipment in standard racks to which the crew have easy access. Servicing of the external items is achieved by mounting them in Orbital Replacement Units (ORU's) which are compatible with the Station and/or Hermes manipulator arms. The ORU's have standardized interface provisions for end effectors and also for attachment to their parent Spacecraft. There are also non-standard ORU's such as solar arrays and comms antennae. The MTFF has attitude/orbit control, stability and position features, has RVD sensors and propulsive capabilities for orbit maintenanck, transfer and rendezvous functions.
MTFF Operational Design Features
This paper describes the main design features incorporated in the European Space Agency's Man-Tended Free Flyer which enable the MTFF to be operational on-orbit for a 30 year period via servicing and maintenance. The MTFF is to be serviced at the Station or by Hermes every 6 months in one of two ways - using man in the Pressurized Module and using robotics for the external equipment of the PM and the Resource Module. EVA is a contingency back-up to the latter. Crew servicing inside the PM is enhanced by the proper attention to design details allowing good access to the payload and subsystem equipment in the same manner as for the Attached Modules of the Station, that is by mounting all equipment in standard racks to which the crew have easy access. Servicing of the external items is achieved by mounting them in Orbital Replacement Units (ORU's) which are compatible with the Station and/or Hermes manipulator arms. The ORU's have standardized interface provisions for end effectors and also for attachment to their parent Spacecraft. There are also non-standard ORU's such as solar arrays and comms antennae. The MTFF has attitude/orbit control, stability and position features, has RVD sensors and propulsive capabilities for orbit maintenanck, transfer and rendezvous functions.
Comments
No other information or file available for this session.