Ritu is a digital map provider in China , and in order to gather information , aerial survey is needed . The reliance on other aerial survey and photography providers proved to be inconvenient , and Ritu thus formed its own aerial survey subsidiary in August 2006 so that it could have aerial survey capability of its own . Originally operating as an aerial surveyor using UAVs provided by other manufacturers , AUT gradually expanded its business to manufacturing UAVs by becoming a licensed manufacturer of multirotors of German Microdrones GmbH in China . However , due to the limitation of multirotors , a larger UAV with greater performance envelop was needed , and as a result , Ritu developed a UAV of its own design , which is a radical departure from those license manufactured earlier : instead of multirotor or unmanned helicopter , it is a fixed-wing UAV in twin boom layout with high wing configuration with tricycle landing gear . Ritu 's fixed-wing UAV utilizes commercial off-the-shelf ( COTS ) subsystems which are integrated together as the final product , and such practice greatly reduced the time needed for development , thus making it available to be deployed to support post-disaster analysis by participating in aerial photography missions , including the 2008 Sichuan earthquake . Ritu fixed-wing UAV is equipped with GPS navigation and is capable of real time imagery transmission . This fixed-wing UAV is one of the few twin-engine Chinese UAVs , with a pair of two-blade propeller-driven engines , one mounted in the nose of the fuselage , and the other at the rear end of the fuselage
2008 Sichuan earthquake
2008 Sichuan earthquake
Ritu UAV