lost female cosmonaut ambient sounds, version 2

This is version 2 of what hear in background in recording of Judica-Cordiglia brothers from 1961. If you want story check on Wikipedia, or http://www.lostcosmonauts.com. I've cleaned this record using some sort of audio programs and boosted some frequences. If somebody recognises this background sound please write (spacecraft, plane, something different?) . Maybe we can solve this mistery. Check also this links: cleaned version: http://www.youtube.com/watch?v=mTnsrlciYD4 ambient sound from background v1: http://www.youtube.com/watch?v=TsfRkWo1GSQ some machinery/computer sounds from this record: http://www.youtube.com/watch?v=VG-ieVPPzvg