We consider three alternative Biomass Processing and Densification Depot (BPDD) technologies; namely, conventional pellet processing, high moisture pellet processing, and ammonia fiber expansion.
An in-space propellant depot not only requires technology development in key areas such as zero boil-off storage and fluid transfer, but in other areas such as lightweight structures, highly reliable connectors, and autonomous operations.
We conclude that the benefits of integrating depots into the overall biomass feedstock supply chain will outweigh depot processing costs and that incorporation of this technology should be aggressively pursued.
It will develop orbiting fuel depots, rendezvous-and-docking technologies, advanced life-support systems that recycle all of their materials, and better motors for spacecraft.
Proponents say prioritizing moon exploration will be helpful for future Mars missions to not only test new technology, but also build lunar fuel depots on the surface of the moon.
The considered trades include those between In-Situ Resource Utilization (ISRU) and propulsion technologies as well as the orbit and depot location selections over time.
Specifically, the proposed MILP model accounts for biomass selection and allocation, technology selection and capacity planning at regional depots and biorefineries.
These technologies can be applicable to a broad range of propellant depot concepts or specific to a certain design.
Even though localized polymer depot delivery systems have been investigated, a surprisingly small subset of these technologies has demonstrated potentially curative preclinical results for cancer applications, and fewer have progressed toward commercialization.
These commercial aircraft repairs are not only demonstrating the engineering and economic advantages of composite doubler technology, but they are also establishing the ability of commercial maintenance depots to safely adopt this repair technique.
