Feeds

LOHAN deluged with Reg readers' interjections in REHAB

Revised hypobaric chamber plan for your delectation

A new approach to endpoint data protection

The Special Project Bureau's elite Hypobaric Evaluation And Design (HEAD) team has spent the last couple of days contemplating your suggestions as to how we might get LOHAN to suck more more effectively.

Click here for a bigger version of the LOHAN graphic

To rewind a bit for Low Orbit Helium Assisted Navigator virgins, we're planning to build a hypobaric chamber to test whether a proposed solid rocket motor for our Vulture 2 spaceplane will fire at low temperature and pressure.

Our initial concept for the Rocketry Experimental High Altitude Barosimulator (REHAB) didn't provoke too many howls of derision, but there were plenty of practical suggestions for improvements.

We've taken these on board, and here's our revised plan:

Our revised hypobaric test rig concept

Working more or less from top to bottom, here are details of the revisions, and a couple of clarifications:

  • The top plate has a safety tether ring, or similar, so we can tie it to something and prevent it going ballistic should an explosive event occur when the rocket motor fires.
  • The plate sits on a silicone rubber seal (good to -70°C, or thereabouts), and a flange – which provides a wide base and prevents the seal from being sucked into the inner tube.
  • The ignition wires pass through the top plate, to avoid the hassle of sticking them through the curved wall of the inner tube.
  • The dry ice pellets are packed into in the space between the inner and outer tubes, and vent freely into the atmosphere. There is no dry ice in the inner chamber.
  • The evacuation tube passes though the inner chamber base, for the same reason as applies to the ignition wires.
  • The inner tube base is also the entry point for a temperature sensor cable.
  • The shut-off valve is between the chamber and the pressure gauge. It'll be closed prior to the motor firing to prevent damage to the gauge and/or vacuum pump.

Some of you demanded a camera set-up to record the internal action, which we're still mulling. We have to balance what footage it might actually get against the amount of work required to provide a viable viewing port. We shall see.

Regarding materials, we're keeping an open mind. It is a case of seeing what's readily available at a reasonable cost. Watch this space... ®

A tip of the hat to our LOHAN associatesOpenPilot

The Essential Guide to IT Transformation

More from The Register

next story
Just TWO climate committee MPs contradict IPCC: The two with SCIENCE degrees
'Greenhouse effect is real, but as for the rest of it ...'
Asteroid's DINO KILLING SPREE just bad luck – boffins
Sauricide WASN'T inevitable, reckon scientists
Brit amateur payload set to complete full circle around PLANET EARTH
Ultralight solar radio tracker in glorious 25,000km almost-space odyssey
Boffins spot weirder quantum capers as neutrons take the high road, spin takes the low
Cheshire cat effect see neutrons and their properties walk different paths
NASA Mars rover FINALLY equals 1973 Soviet benchmark
Yet to surpass ancient Greek one, however
Famous 'Dish' radio telescope to be emptied in budget crisis: CSIRO
Radio astronomy suffering to protect Square Kilometre Array
prev story

Whitepapers

7 Elements of Radically Simple OS Migration
Avoid the typical headaches of OS migration during your next project by learning about 7 elements of radically simple OS migration.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Consolidation: The Foundation for IT Business Transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.
Solving today's distributed Big Data backup challenges
Enable IT efficiency and allow a firm to access and reuse corporate information for competitive advantage, ultimately changing business outcomes.
A new approach to endpoint data protection
What is the best way to ensure comprehensive visibility, management, and control of information on both company-owned and employee-owned devices?