Complex sentence: During 1910 Brooklands rapidly became a major centre of flying in Britain and that summer, Hilda Hewlett and Gustave Blondeau opened Britain's first flying school at Brooklands.
Split into simpler sentences: During 1910 Brooklands rapidly became major centre of flying in Britain. In the summer of 1910, Hilda Hewlett and Gustave Blondeau opened Britain's first flying school at Brooklands.