Airborne, Bound Roof Structures for Martian Application, for the Protection of Living Spaces Suitable for Human Beings, or Setting up Industrial Activities

Shading, protecting airborne, bound roof surfaces of big size are made in Martian environment, to give protection from cosmic and UV radiation, dust or other effects with the application of NilDiffusion (ND) technology in such a way, that no separate supporting or stiffening structures have to be used. These are suitable for the protection of the living spaces suitable for human beings, or setting up industrial activities. Background of the problem to be solved: In the Martian surface environment the UV radiation of the Sun and the cosmic radiation are of hazardous extent. The atmosphere can protect to a lesser extent only. It is also important the effect of the dust and the wind. For the future planning human and industrial activity it is necessary setting up closed, semi-closed spaces for dust protection and arranging technical, human demands, shaping environment. In the traditional realisations it is necessary to set up a supporting structure in case of an area of great covered surface, but in case of a small area as well. In case of applications in distant planetary destinations the mass and dimensions to be transported are quite limited, it excludes the application, delivery and feasibility of rigid supportive structures and roof structures of otherwise appropriate strength. The supportive structures can be set up on the site by blown hose structures of over pressure with pneumatic stiffening, blown with the gas compound of the local atmosphere, or the solution would be the application of a gas lighter than the gas of the local atmosphere, but it is limited by the gas-enclosing capacity of the foil applied. In connection the realisation the theoretical problem of diffusion due to the partial pressure and pressure gradient resulting in the loss of lift gas and becoming heavy so the roof structure descends. The main issues of the application of airborne roof structures: It justified to build a roof structure lighter than atmosphere, without inner support in case of application either on Earth or on other planet surface: -in case of big covered surfaces, big size roof structures, when there are big surface objects on the covered area, in such cases, when the supportive or stiffening structures would be of too big size (more than 100 m), transport to the site, setting up would be too difficult or impossible. Taking into consideration outside conditions, these conditions justify Martian application to a great extent. The essence of our proposal: The Nil-Diffusion (ND) technology makes possible the realisation of the lifting bodies of an airborne, bound roof surfaces of big size are made in Martian environment for long life. It is not necessary to make the whole roof structure this way, it is sufficient to make it for a part only. One of the possible ways of realisation making use of the possibilities offered by Martian atmosphere that lifting units filled with lift gas, preferably with hidrogen or helium are used for ensuring the lifting, keeping of the roof. The stiffness and mechanical structural stability of the roof structure are ensured by ribs of pneumatical stiffening, resp. with an inner structure, which ensures the structural stiffening, mechanical stability of the roof structure. These pneumatical ribs can be filled with the gas of the local atmosphere, which do not have up-driving effect, the weight of the roof consists of the weight of their own material and the gas part of over-pressure.