Experiments were instituted upon the possibility of rescue from
altitudes up to 21 km. [68,900 ft.].
Without parachute oxygen equipment, rescue in descending experiments is
still possible from 13 km. [42,700 ft.], with equipment, from 18 km.
[59,100 ft.]. The danger arising from cold must be considered.
In falling experiments, rescue from 21 km. [68,900 ft.] altitude with
and without oxygen was proved possible. Automatic parachute opening is
necessary. Ebullition of the blood does not yet occur at 21 km. [68,900
ft.] altitude.
[page 28 of original]
Oxygen must be breathed before explosive decompression. Abandonment must
be by means of the ejection seat. The dive to safe altitude offers good
possibilities of rescue if abandonment of the plane is not necessary
after loss of the cabin pressure.