Feeds

LOHAN rolls out racy rocketry round-up

Progress to date on our audacious spaceplane mission

  • alert
  • submit to reddit

Providing a secure and efficient Helpdesk

2: Rocket motor testing in the Rocketry Experimental High Altitude Barosimulator (REHAB) chamber

It's fair to say that the small matter of how to get a solid rocket motor to fire at altitude has been a right palaver. It's taken months to go from an initial concept of a shed-built hypobaric test chamber to the full-fat REHAB rig:

The latest iteration of our Rocketry Experimental High Altitude Barosimulator rig

The bits and pieces are:

  1. Perspex lid
  2. Igniter cable
  3. REHAB chamber
  4. Vacuum pump
  5. Pressure gauge
  6. Digital thermometer
  7. Evacuation tube
  8. Thermocouple cable
  9. Safety tether tied to SPB standard brick
  10. Vacuum filter
  11. Insulated box
  12. Silicone seal

The only novelty here is the vacuum filter, which we've added to the system to allow us to see if the firing of reader Rob Eastwood's custom igniter is causing a significant pressure rise in the chamber prior to motor ignition.

The connected vacuum filter, before igniter firing

The filter will intercept any smoke particles and other gunk from the igniter before it gets to the vacuum gauge - an expensive piece of kit kindly supplied by Applied Vacuum Engineering.

This means we can test for igniter-induced pressure rise without shutting off the isolation valve between chamber and gauge.

We'll give that a go next week. In the meantime, we do know that we can persuade a Cesaroni rocket motor to fire at around 20mbar - equivalent to 76,500ft (23,300m):

The REHAB chamber lid almost vertical as it flies away from the rocket exhaust

Watch Video

We've got more REHAB tests planned just as soon as a new batch of motor reloads turns up, so there's further low-pressure tomfoolery on the horizon.

Internet Security Threat Report 2014

More from The Register

next story
MARS NEEDS WOMEN, claims NASA pseudo 'naut: They eat less
'Some might find this idea offensive' boffin admits
LOHAN crash lands on CNN
Overflies Die Welt en route to lively US news vid
Comet Siding Spring revealed as flying molehill
Hiding from this space pimple isn't going to do humanity's reputation any good
Experts brand LOHAN's squeaky-clean box
Phytosanitary treatment renders Vulture 2 crate fit for export
No sail: NASA spikes Sunjammer
'Solar sail' demonstrator project binned
Carry On Cosmonaut: Willful Child is a poor taste Star Trek parody
Cringeworthy, crude and crass jokes abound in Steven Erikson’s sci-fi debut
Origins of SEXUAL INTERCOURSE fished out of SCOTTISH LAKE
Fossil find proves it first happened 385 million years ago
Human spacecraft dodge COMET CHUNKS pelting off Mars
Odyssey orbiter yet to report, though - comet's trailing trash poses new threat
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.
Why and how to choose the right cloud vendor
The benefits of cloud-based storage in your processes. Eliminate onsite, disk-based backup and archiving in favor of cloud-based data protection.
Three 1TB solid state scorchers up for grabs
Big SSDs can be expensive but think big and think free because you could be the lucky winner of one of three 1TB Samsung SSD 840 EVO drives that we’re giving away worth over £300 apiece.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.