Pesawat besar domestik 8 peratus menggunakan aloi titanium

Gantikan pesawat domestik yang besar denganaloi titanium

Pada tahun 2006, Majlis Negeri meluluskan penubuhan Jawatankuasa demonstrasi skim pesawat besar. Cao Chunxiao adalah satu-satunya ahli yang terlibat dalam penyelidikan bahan penerbangan. Selepas pelancaran projek itu, Cao Chunxiao berkhidmat sebagai ahli jawatankuasa penasihat pakar dan mengembara ke seluruh negara. Projek pesawat besar meliputi pesawat awam dan tentera, dan kod pesawat awam ialah C919.

The less weight an airplane has, the better. The weight of the airplane itself is a percentage of its total take-off weight, which is called the "structural weight coefficient of the airplane". In the past 70 years, no aircraft has had a structural weight factor of less than 27 percent , which is due to the performance of large components and the manufacturing capacity of large components. Titanium material becomes the key. Aloi titaniumbahan dan teknologi penempaan boleh mengurangkan berat struktur pesawat dan meningkatkan daya saingnya.

Today, the more economically demanding C919 uses 8 percent titanium, comparable to 7.5 percent of the Boeing 777 in the U.S. Large aircraft can not be manufactured without large forgings which require high technology. In the column "Academician's Introduction", Cao Chunxiao shows titanium forging joint for C919, named TC4, weighing 600 kg. To make similar forgings, China has built the world's largest 80,000-ton hydraulic press.

In November 2015, C919 with China's independent intellectual property rights was officially unveiled worldwide in Shanghai. Cao Chunxiao was thrilled at the scene and his dream of more than forty years came true at last.

Pada 5 Mei 2017, pesawat C919 membuat penerbangan pertama yang berjaya di Shanghai. Pada Mac 2021, C919 mengambil pesanan pertama. Menjelang awal 2022, C919 telah menerima 815 pesanan.