As a reaction to Art Deco and a reflection of poor economic times. As the great depression progressed, industrial designers began designing pure-concept objects with elements of aerodynamics. The idea became popular when consumer demand declined and people had to be careful what they purchased.
The teardrop shape and other elements suggested speed and lack of resistance. This gave consumers a sense of efficiency and movement, which was comforting in a stagnant time.
Other aspects of design in this period centered on hope and fantasy in order to get people to buy our way out of the depression. Mass production and the assembly line were used to increase efficiency of production and make products available to many.
Influential people of this time:
Henry Dreyfuss (1904-1972) conducted mass research on the measurements of human beings in consideration of product design. His goal was to eliminate discomfort for the user
Raymond Lowey (1893 - 1986) remade objects with less visual complexity, prompting consumers with the idea of novelty. He follows the idea of MAYA (Most advanced yet acceptable), that people need to feel comfortable with products as they advance.