We will arbitrarily call alloys having a specific gravity of less than 2 "ultra-light", in order to distinguish them from "light" alloys with a specific gravity of 2 to 3. Thus far it has been possible to make ultra-light alloys only by employing a large proportion of magnesium.
Ultra-light alloys and their utilization on aircraft
International Air Congress ( 1923 : London, England)
1924-05-01
Miscellaneous
No indication
English
Ultra-light aircraft construction
Engineering Index Backfile | 1946
|NTIS | 1993
|Engineering Index Backfile | 1929
The Ultra Light Aircraft Testing
NTRS | 1993
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