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22 results found
Nichoid in space: Advanced in vitro models for “on orbit” investigations

In most in vitro cell models, cultures are made adhering to flat culture slides and the expected activation of specific cell markers is measured on cells. However, in this simplified condition, cell response is not representative of the in vivo response, which is based on cell interactions that occur in three-dimensional (3D) non-flat environments and between several cell populations.

Italy

ETD 2020-03-a

Istituto Italiano di...
Off-Earth manufacturing through self-growing 3D printer

During the project activities, the authors proposed a conceptual framework, which utilizes resources available in situ through the chemical and physical processes associated with agriculture; the soil and CO2 (if present) are transformed into fibrous plant matter, harvested and finally converted into mechanical and structural components.

Italy

20-D-S-TEC-03-a

Università degli studi...
Environmental aspects of passive de-orbiting devices

The technical objective of this study was to understand the net effect of using deorbiting technologies like sails or tethers over the future debris population around Earth. In principle, indeed, these attractive technologies will support the compliancy to post-mitigation disposal guidelines, for small missions. However, the increased cross section also increases the collision risk.

Italy

15/095

Politechnico di Milano
Feasibility of ultra low thrust transfers in L1, L2, Sun, Earth & Moon Systems

The number of spacecraft flying in highly nonlinear gravitational fields is largely increased during the last few decades, and probes orbiting in Lissajous or Halo orbits can be found around both the Lagrangian Points L1 and L2 of the Sun-Earth&Moon system.

Italy

15/723-b

POLITECNICO DI MILANO
Solar Rectennas – Nanosized Rectenna for Solar Cells

Motivation:
To provide a proof-of-concept demonstration of light rectification in a nano-rectenna as an alternative energy conversation process to semiconductor solar cells based on the photovoltaic effect. For space this alternative energy conversion process could enable applications under different environmental conditions (e.g. temperature ranges, radiation) and offer the advantage of higher theoretical conversion efficiency.
Methodology:
To provide a proof-of-concept demonstration of rectennas working at high frequencies through the development of:

Italy

15/713-a

Fondazione Istituto...
Assessment of onboard DA state estimation for spacecraft relative navigation

The goal of this study is two-fold. First, to identify and develop a DA- based high-order filter for relative pose estimation. The application considered is the rendezvous with an uncooperative target, modelled after ESA's e.deorbit mission. Secondly, the DA algorithms are implemented on hardware mimicking the limited computational power available in space. The resulting implementation is tested in a processor in the loop (PIL) test-bench using the approach phase of the chaser to the uncooperative target to be estimated.

Italy

16/R03

POLITECNICO DI MILANO
PHOTON-ENHANCED THERMIONIC EMISSION

Motivation:
To investigate the combination of thermal and photovoltaic effects towards an high efficient photo-to-energy conversion device.
Methodology:
We used numerical simulations based on FEM technique. In particular, we addressed the charge cloud issue in a fully 3D fashion to be able to design and simulate devices as close as possible to reality.
After initial tests based on analytical and 1D numerical techniques, we moved to the 3D device where we investigated the role of cathode-anode

Italy

13-065

Istituto Fondazione...
Contactless asteroid orbit modification system MOSAIC and bindary asteroid orbit modification KABOOM

KABOOM
We study a low-cost interplanetary mission to demonstrate the capability of artificially modifying the orbit of a small (250 ton) binary asteroid body. The targeting spacecraft survives the slow (~1 m/s) impact to carry out the orbit modification measurement afterwards.
Methodology:

Spain

2012-5

Politechnico di Milano
Trajectory Optimisation under Uncertainties
Italy

2011-15

POLITECNICO DI MILANO
Assessment of propagation effects in the W frequency band for space exploration
Italy

2007-33

POLITECNICO DI MILANO

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