HL-20 was envisaged as a lifting body re-entry vehicle based on the Soviet BOR-4 spaceplane design featuring low operational costs, improved flight safety, and a possibility of landing on conventional runways.
HL-20 was envisaged as a lifting body re-entry vehicle that was loosely based on the Soviet BOR-4 spaceplane design. Its stated goals were to achieve low operational costs, improved flight safety, and a possibility of landing on conventional runways.