Asked if there was less participation in the wake of the medium multirole combat aircraft (MMCA) deal having been finalised, Mathur said interest of companies remains the same.
There were six contenders for the MMCA deal which included the Russian MiG-35, Lockheed Martin's F-16 Falcon, Boeing's F-18 Hornet, the Swedish Saab Gripen, Eurofighter Typhoon and French Rafale.
The Rafale fighter of Dassault Aviation had emerged as the lowest bidder in the MMCA competition last year.
Mathur said leading engineering colleges from the country would display designs of their students at the aero show.