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An external view of Europe’s largest vacuum chamber, the Large Space Simulator, which subjects entire satellites to space-like conditions ahead of launch. This 15 m-high and 10 m-diameter chamber is cavernous enough to accommodate an upended double decker bus.
Satellites are lowered down through a top hatch. Once the top and side hatches are sealed, high-performance pumps create a vacuum a billion times lower than standard sea level atmosphere, held for weeks at a time during test runs.
A 121-segment mirror array reflects simulated sunlight into the chamber, at the same time as the internal walls are pumped full of –190°C liquid nitrogen, together recreating the extreme thermal conditions prevailing in orbit.
Embedded sensors and measurement devices check whether a mission’s thermal engineers have done their job well, and if the test satellite maintains an acceptable internal temperature range without buckling or other unwanted temperature-driven effects.
The simulator is an essential part of ESA’s Test Centre in the Netherlands, the largest facility of its kind in Europe, providing a complete suite of equipment for all aspects of satellite testing under a single roof.
Credit: ESA–G. Schoonewille, CC BY-SA 3.0 IGO
This screenshot is a part of the tutorial. The machine--a Cessna 152--is "flying" somewhere over Arizona, I think.
I had been a Flight Simulator (FS) user since the early mid-Eighties. However, about 15 years ago, I stopped using FS. The latest version has reignited interest, particularly with high details, both in the aeroplane as well as the landscape and airports.
These are small compared to the HUGE simulators they have at the college, but they are very well designed, and amazing tech, for in a classroom environment...
An up close and personal look at the Microsoft Train Simulator decal that was applied to the nose of BNSF 4723 over 20 years ago. Somewhat amazingly, the sticker has withstood the test of time, still clearly visible and with a pretty darn good color match as well.
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A rear view of ESA’s single most powerful solar simulator.
An array of 19 xenon lamp modules, each consuming 20 kW, cast a concentrated beam of artificial sunlight into Europe’s largest vacuum chamber, the Large Space Simulator.
Part of ESA’s ESTEC Test Centre in Noordwijk, the Netherlands, the 15 m-high 10 m-diameter chamber subjects satellites to simulated space conditions for weeks at a time: deep vacuum, unfiltered sunlight and the chill of space recreated by liquid nitrogen being pumped around the walls.
Just 12 out of 19 lamps are sufficient to recreate the sunlight encountered at Earth orbit. To simulate environments closer to the Sun, the 20 kW lamps can be swapped for 32 kW versions, or the mirror array used to reflect sunlight within the chamber can be adjusted for a more focused light beam.
This image was taken by photographer Alastair Philip Wiper, during a visit to ESA’s technical heart, part of a long term project charting the beauty of scientific facilities: alastairphilipwiper.com/blog/estec/
Credit: Alastair Philip Wiper
Ein Panzersimulator der russischen Armee zur Ãœbung von Ausstiegen unter Wasser.
A tank simulator of the Russian army exercise of got out underwater
BNSF 4723 leads CP 8646 south through Neenah. No shortage of colorful power as A449 had an ICE unit and quick-patched CN 2012.
Just a short video of me trying out the Origami Simulator on my Nanachi crease pattern. Works surprisingly well! I think this tool could be useful when testing out new complex CPs, to see how the collapsing will roughly look like.