Officials said 607 companies have booked space at the show, while 675 took part in the last edition.
They said that Aero Show will be spread over 125,000 sq m compared to the previous Aero India, which was spread over 75,000 sq m.
Against 47 overseas delegations in 2011, there will be 78 foreign delegations this year. The largest overseas participation is expected from the US, followed by Israel and Russia.
Aero India is a biennial air show held at Yelahanka Air Force Station in Bangalore and aims to bring under one roof exhibitors from around the globe to showcase the best in aviation.
The show is organised by Department of Defence Production.
India is projected to become the third largest defence spender after the US and China. The total defence capital budget in 12th Five Year Plan is estimated to be Rs.4,45,500 crore with capital acquisition budget ranging up to 85 percent on