Trips to the ISS, the Moon, Mars, the Sun and other locations in the Universe may be easier in the future. For, there are new concepts when it comes to the practice of in orbit refueling. While currently, there is a depot which contains a tank of fuel somewhere near earth or another planetary body, refueling remains extremely limited.
Without having this cache of fuel, resources required for space exploration and travel would be non-existent. Whereas, if these types of resource depots can be placed in the infrastructure, space exploration and space travel could become more prevalent in the future. As different types of depots are necessary depending on the type of fuel necessary to complete a mission, this is easier said than done.
Whether filling a type of spacecraft on location, or by tankers which can deliver fuel to spacecrafts while at specific locations in orbit, then depart, either would be beneficial in moving forward with several planned missions. In most designs and concepts, tankers would not necessarily need to be in close proximity to a space station.
Several entities could benefit from in-orbit refueling and storage facilities. These include, commercial companies such as Virgin, communications satellites, defense ministries and space agencies. Whereas, the end of life for satellites would be extended, thus also cutting the time satellites are in geosynchronous orbit.
It is believed that if the depots were to come to pass, the satellites would participate with depots to transfer propellant so that the satellite could provide continued maneuvers while in orbit. Where some plans have been reviewed for replenishing the fuel satellites use, most recently in 2011, those plans have since been canceled.
As more than 1/2 of a spacecraft is generally fuel, the plans call for delivery of full or partial transfers. While this is the case, there are some considerations as to how the depots could impact various rockets and spacecraft. For example, a separately launched spacecraft with a crew or payload could use a smaller launch vehicle if depots and refueling were available in orbit.
Concepts also suggest that depots could be placed behind the Moon to help reduce the costs of trips to the Moon or Mars. Whereas, others suggest that placing a depot in the orbit of Mars could also be useful with regards to reducing costs and making such missions more likely. For, only when crews can assure a safe return from Mars, the Moon or the Sun can such missions take place.
Fuel tanks in spacecraft and rockets usually take up more than half of the total mass of the vehicle. Whereas, larger engines in rockets often need to use fuel such as liquid oxygen or hydrogen as an oxidizer due to possible impulse. While this is the case, the transfer of fuel must be done with extreme cautionary measures. For, the risk of boil off is greater with these fuel types than others.
Without having this cache of fuel, resources required for space exploration and travel would be non-existent. Whereas, if these types of resource depots can be placed in the infrastructure, space exploration and space travel could become more prevalent in the future. As different types of depots are necessary depending on the type of fuel necessary to complete a mission, this is easier said than done.
Whether filling a type of spacecraft on location, or by tankers which can deliver fuel to spacecrafts while at specific locations in orbit, then depart, either would be beneficial in moving forward with several planned missions. In most designs and concepts, tankers would not necessarily need to be in close proximity to a space station.
Several entities could benefit from in-orbit refueling and storage facilities. These include, commercial companies such as Virgin, communications satellites, defense ministries and space agencies. Whereas, the end of life for satellites would be extended, thus also cutting the time satellites are in geosynchronous orbit.
It is believed that if the depots were to come to pass, the satellites would participate with depots to transfer propellant so that the satellite could provide continued maneuvers while in orbit. Where some plans have been reviewed for replenishing the fuel satellites use, most recently in 2011, those plans have since been canceled.
As more than 1/2 of a spacecraft is generally fuel, the plans call for delivery of full or partial transfers. While this is the case, there are some considerations as to how the depots could impact various rockets and spacecraft. For example, a separately launched spacecraft with a crew or payload could use a smaller launch vehicle if depots and refueling were available in orbit.
Concepts also suggest that depots could be placed behind the Moon to help reduce the costs of trips to the Moon or Mars. Whereas, others suggest that placing a depot in the orbit of Mars could also be useful with regards to reducing costs and making such missions more likely. For, only when crews can assure a safe return from Mars, the Moon or the Sun can such missions take place.
Fuel tanks in spacecraft and rockets usually take up more than half of the total mass of the vehicle. Whereas, larger engines in rockets often need to use fuel such as liquid oxygen or hydrogen as an oxidizer due to possible impulse. While this is the case, the transfer of fuel must be done with extreme cautionary measures. For, the risk of boil off is greater with these fuel types than others.
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