Santos Dumont had close competition by Jacob Ellehammer[1] who is probably only (mostly) known locally. But truly pioneers: Building planes, helicopters and ca

Santos Dumont had close competition by Jacob Ellehammer[1] who is probably only (mostly) known locally. But truly pioneers: Building planes, helicopters and cars totally from scratch. [1] https://en.wikipedia.org/wiki/Jacob_Ellehammer https://en.wikipedia.org/wiki/Jacob_Ellehammer