ESA

Large Space Simulator

General Description

The ESTEC Large Space Simulator is the largest test facility in Europe recreating space environment inclusive of sun and motion simulation. 

The specific design and excellent performance assure that a wide variety of tests can be performed: 

  • Thermal Balance testing (with sun simulation), 
  • Infrared radiation, 
  • Vacuum temperature cycling, 
  • Deployment testing, 
  • Videogrammetry measurements, 
  • Dynamic balancing.

The Large Space Simulator consists of two vacuum chambers: in the main chamber the test item is installed on the motion system. 

A variety of portholes allow the connection of lines to/from the spacecraft. 

The auxiliary chamber provides the accommodation for the collimation mirror of the sun simulator.

ESA
TECHNICAL PARAMETERS

Vacuum Pumping System

Typical achievable vacuum

5.10-6mbar

Lowest achieved vacuum

3.10-7mbar

Shroud & Nitrogen Supply Equipment

Temperature in LN2 mode

< 100K

Heat Load in LN2 mode

170kW

 Temperature in GN2 mode

150K - 350K

Heat load in GN2 mode

10kW

Surface emissivity

0.90

Sun Beam (6m diameter)

Intensity

70 - 2600W/m²

Collimation angle

1.9°

Sun stability at 1 SC

+/- 0.5%

 In-plane uniformity at 1 SC

+/- 4%

In-volume uniformity at 1 SC

+/- 6%

Sun Beam (2.7m diameter, non-standard configuration)

Intensity

1 SC - 10 SC*

Full cone angle

9,8°

Motion System

Max test object mass including adaptor

5000kg (7000kg static and 0° tilt angle)

Max moment of inertia

8000kg·m² (fast spin), 55000kg·m² (slow spin)

Position range

Unlimited (spin box), 270° (turn table and tilting joint)

Position accuracy

+/- 0.3°

Velocity range

0.25-2160°/min (spin box), 0.25-10°/min (turn table and tilting joint)