In August last year, Mumbai-born Gowadia, 66, was convicted on 14 counts on charges, including conspiracy, communicating national defense, violating the arms export control act and information to aid a foreign nation.

He now faces life sentence.
Between 2003 and 2005 Gowadia made six secret trips into mainland China and exchanged numerous communications to help Chinese defense engineers design a cruise missile that is able to evade air-to-air, heat-seeking missiles, according the federal indictment against him.
According to court papers, Gowadia hid the proceeds from the transactions by directing the payments to secret Swiss bank accounts of foundations he set up in Liechtenstein, the government said in recently filed court documents.

Prosecutors alleged that Gowadia helped design an exhaust nozzle for China that gives off less heat, making it difficult for enemy infrared detectors to track the missile for which he got USD 110,000 over two years.

Gowadia worked for Northrup from 1968 to 1986, during which time he helped develop the B-2 bomber's unique propulsion system.

After his employment with Northrup ended, Gowadia continued his relationship with the US military as a private contractor.

However, following some angry dealings with the Air Force and the Los Alamos National Laboratory in 1993, Gowadia began to seek and solicit business internationally, the government said.