Feeds

PARIS pops down to QinetiQ

Vital hypobaric chamber test proves... interesting

  • alert
  • submit to reddit

Choosing a cloud hosting partner with confidence

Well, that worked a treat. As the pressure dropped, the plunger slid smoothly out, according to our prediction. In fact, it turned out we needed only 15cc of air for the thing to work, and a pressure sensor test on the syringe revealed that a pressure of just 8mm of mercury (official QinetiQ standard for these matters) was required to move the plunger.

So, we set up the syringe again in our initial test configuration, with 15cc of air, and took it up at 1,000 feet per minute.

Once again, nothing, at which point we realised what was going on: after the first failed test, we'd increased the rate of climb on subsequent runs to speed up the process.

In fact, a rate of climb of at least 2,000 feet per minute was required for the contraption to work - in excess of the predicted balloon ascent rate.

A further pressure sensor hook-up demonstrated that the pressure inside the syringe at 1,000 feet per minute was just 2mm of mercury, which indicated a leak. It appears that if the rate of ascent was too low, the air had time to sneakily escape between the ground glass plunger and the syringe interior wall.

So there you have: a sound plan thwarted by unforeseen factors. All is not lost, though, since the QinetiQ chaps did quickly put together another possible pressure-based system, which looks promising. We'll report back on that as soon as we have some new kit ready for testing.

It just remains to say ta very much to QinetiQ for their hospitality and enthusiasm, and to note that'll we'll be posting a video of the test on our YouTube channel in due course. ®

Additional PARIS resources

  • Our dedicated PARIS section, with all previous updates, is right here.
  • New to PARIS? We have a basic mission summary here (pdf).
  • Check out our YouTube channel - currently featuring a few camera tests.

Secure remote control for conventional and virtual desktops

More from The Register

next story
GRAV WAVE DRAMA: 'Big Bang echo' may have been grit on the scanner – boffins
Exit Planet Dust on faster-than-light expansion of universe
Mine Bitcoins with PENCIL and PAPER
Forget Sudoku, crunch SHA-256 algos
SpaceX Dragon cargo truck flies 3D printer to ISS: Clawdown in 3, 2...
Craft berths at space station with supplies, experiments, toys
'This BITE MARK is a SMOKING GUN': Boffins probe ancient assault
Tooth embedded in thigh bone may tell who pulled the trigger
DOLPHINS SMELL MAGNETS – did we hear that right, boffins?
Xavier's School for Gifted Magnetotaceans
Big dinosaur wowed females with its ENORMOUS HOOTER
That's right, Doris, I've got biggest snout in the prehistoric world
Japanese volcano eruption reportedly leaves 31 people presumed dead
Hopes fade of finding survivors on Mount Ontake
That glass of water you just drank? It was OLDER than the SUN
One MEELLION years older. Some of it anyway
Canberra drone team dances a samba in Outback Challenge
CSIRO's 'missing bushwalker' found and watered
prev story

Whitepapers

Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Storage capacity and performance optimization at Mizuno USA
Mizuno USA turn to Tegile storage technology to solve both their SAN and backup issues.
The next step in data security
With recent increased privacy concerns and computers becoming more powerful, the chance of hackers being able to crack smaller-sized RSA keys increases.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
A strategic approach to identity relationship management
ForgeRock commissioned Forrester to evaluate companies’ IAM practices and requirements when it comes to customer-facing scenarios versus employee-facing ones.