Most rocket engines fired on a single flight

The most rocket engines fired on a single flight is 44 and was achieved by the Sounding Rockets Program, based at NASA Wallops Flight Facility (USA), onboard a rocket launched from the Andøya Space Center, Nordland, Norway, on 16 September 2015.

NASA's Sounding Rockets Program has been going for over 40 years. Sounding rockets - also called research rockets - carry scientific instruments into sub-orbital flight. These types of rocket spend a short amount of time in space - typically between just 5 and 20 minutes.

The rocket was carrying the Charged Aerosol Release Experiment (CARE II), designed to create artificial noctilucent clouds. The scientists wanted to study how dusty clouds like these can scatter radar signals.