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 .
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 .