Complex sentence: In January 2011, REL submitted a proposal to the British Government to request additional funding for the Skylon project and in April REL announced that they had secured $350 million of further funding contingent on a test of the engine's precooler technology being successful.
Split into simpler sentences: In January 2011, REL submitted a proposal to the British Government to request additional funding for the Skylon project. In April 2011, REL announced that they had secured $350 million of further funding contingent on a test of the engine's precooler technology being successful.