Thu, Sep 24, 2015
Four Large Titanium Tanks Completed, Set For Transport To Italy
Airbus Defense and Space, prime contractor for NASA’s Orion space vehicle’s European Service Module (ESM), has completed four large titanium tanks for the module that will be delivered for initial testing.
The tanks are the first hardware to be supplied for the Orion space vehicle. Each tank is 8.7 feet high with a diameter of 3.8 feet. The tanks weigh approximately 220 pounds when empty and have a volume of about 550 gallons, giving a total payload capacity of almost nine metric tons of fuel (monomethylhydrazine (MMH) and mixed oxides of nitrogen (MON)). Most of the ESM’s total mass of just over 13 tonnes will consist of fuel.
The tanks will be first transported to Italy, where the structural test model will be assembled before being tested in the United States. The primary goal of these initial tests is to verify whether the structural components can withstand the enormous loads, especially during take-off. The next step is to build the engineering model that will be assembled and tested at Airbus Defense and Space in Bremen. This model will be used to test the inner workings of the tanks, which ensure a continuous, bubble-free flow of propellant to the motors in zero gravity. The actual flight tanks for the ESM – which will be used for the first time when the uncrewed Exploration Mission 1 launches in 2018 – will be built by Airbus Defense and Space in Bremen by mid-2016.
The ESM will provide propulsion, power and thermal control to the Orion space vehicle, and will also supply crew members with water and oxygen during future space missions beyond low Earth orbit.
(Image provided with Airbus Defense and Space news release)
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