He moved onto research on liquid fuels, drawing plans for the first Italian-built combustion chamber, tested in 1930 with the help of his son, Luigi Crocco.
他转而对研究液体燃料，设计出意大利第一台液体火箭发动机，1930年在他儿子路易吉·克罗科（Luigi Crocco）的帮助下完成了测试。