The vehicle comes from ekranoplan layout, however it has extended features like orbital drop, thermo-resistant chameleon skin, teflon belly.
First test flights revealed construction weaknesses of four intakes engines. In Orbit Drop trials were discovered engines failures which lead to crash of vehicle. The reasons were to high drag and low power of the engines. On the later stage of development the problematic engines were replaced with two fused double engines with classic round form which drastically improved safety and performance of the vehicle.