Shrouded propfan CRISP

Photo of the encased CRISP propfan
Shrouded propfan CRISP
DLR is conducting research into high-performance propulsion systems, such as the shrouded propfan (CRISP) shown here – a combination of a ducted turbofan engine and a propeller. The open-fan engine featured on the following pages marks another step toward highly efficient aircraft propulsion.