1 1930 â 1939 World History - 1930 â 1939 World History Amelia Earhart (1897â1937) The Library of Congress Picture 2  ... RFC: meaning and definitions-RFC: Definition and Pronunciation. 3  Agencies of the United Nations-Agencies of the United Nations Linked to the United Nations through special agreements, the ...
1 Wood was used on most early airplanes and is now mainly used on homebuilt airplanes. 2  Wood is lightweight and strong, but it also splinters and requires a lot of maintenance. 3  Aluminum (blended with small quantities of other metals) is used on most types of aircraft because it is lightweight and strong.
Even though it seems strange, I found drawings for a model airplane engine that calls for a hard aluminum piston. (Roy Clough's Little Dragon 060) They also mention that some commercial engines have used aluminum. What's the hardest alloy of aluminum that can be machined by a model engineer? Thanks.