Launch system that uses a single use launch vehicle
A Delta IV Heavy rocket (left) and a Proton-M rocket (right)
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An expendable launch system (or expendable launch vehicle/ELV) is a launch vehicle that can be launched only once, after which its components are either destroyed during reentry or discarded in space. ELVs typically consist of several rocket stages that are discarded sequentially as their fuel is exhausted and the vehicle gains altitude and speed. As of 2024, less and less satellites and human spacecraft are launched on ELVs in favor of reusable launch vehicles.[1] However, there are many instances where a ELV may still have a compelling use case over a reusable vehicle. ELVs are simpler in design than reusable launch systems and therefore may have a lower production cost. Furthermore, an ELV can use its entire fuel supply to accelerate its payload, offering greater payloads. ELVs are proven technology in widespread use for many decades.[2]
^Resource, K. D. C. "The Rise of Reusable Rockets: Transforming the Economics of Space Travel". KDC Resource. Retrieved 2024-04-10.
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