From NK 792. Former cosmonaut Valentin Lebedev is of the opinion that the Mars-500 experiment will not reveal anything new, and is not an effective simulation of a journey to Mars.
03/07/2009 / 00:05 – Valentin Lebedev: Mars-500 experiment “will not provide the necessary scientific data for a manned flight to Mars”
The Mars-500 scientific experiment, which is scheduled to begin next spring, will not give scientists the data needed to understand the possibility of interplanetary flight, said the member of Russian Academy of Sciences, pilot-cosmonaut, twice Hero of the Soviet Union Valentin Lebedev.
“As for the ground experiments, the similar Mars-500 experiments, which now try to mimic the conditions of the Martian mission, offer little understanding of the problems of human flight in deep space, while we have for decades made long flights on orbital stations,” said V. Lebedev, whose paper is published on the Roscosmos site.
According to him, an experiment with human habitation in an enclosed space does not provide the necessary psychological conditions, as participants at any time may leave the premises. “It's conditional, as if preparing to drift on ice floes in the Arctic held in winter on a pond near Moscow,” said the cosmonaut.
As noted by Lebedev, ground-based studies have little relevance to real interplanetary flight, adding that experiments on living people in closed spaces were conducted in the country several times, and the Mars-500 experiment is just a repeat of this.
The cosmonaut suggested that a special module be developed that would simulate a Mars mission, and attach it to the ISS. “Then it will be possible to create conditions in the module closest to interplanetary flight,” said V. Lebedev.
The beginning of the Mars-500 experiment, during which the scientists are planning to simulate a manned flight of six volunteers to Mars, is scheduled for the beginning of 2010. During the 520-day virtual flight, scheduled work will take place on the Martian surface for a month by two participants in the experiment inside the simulator constructed in the Institute of Biomedical Problems building.
He does have a valid point – the experiment also takes place in full gravity with no worries about radiation exposure from deep space. Attaching a specialized module to the ISS is a valid alternative; but it would be expensive (though perhaps not much more than the $10 million or so for the ground experiment?).
The rather graphic diagram below – “Mechanism of lumbar spine distraction fracture (Chance Fracture)” – is from a report on the STS-107 Columbia accident, showing the seatbelt of a crewperson cutting through their waist and snapping their spine. Ugh! That’s about the most gruesome image in the report – no photos of the bodies, alas. I suppose they would have looked something like the charred cosmonaut in my 30/11/2008 entry, but broken into pieces. There is another of a charred helmet, also below – temperatures it endured are given as 300-400°C, so one can imagine the state of the head inside. (If I go asking such morbid questions on forums though, I will be told off, so I will have to restrict my ghoulish curiosity about such things to my blog. Well, Dad was an Airworthiness Inspector [who saw dead bodies!] and Mum was a nurse [who saw dead bodies!], so I’ll blame this on them.)
