Feeds

LOHAN rolls out racy rocketry round-up

Progress to date on our audacious spaceplane mission

  • alert
  • submit to reddit

Bridging the IT gap between rising business demands and ageing tools

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.

Mobile application security vulnerability report

More from The Register

next story
Bad back? Show some spine and stop popping paracetamol
Study finds common pain-killer doesn't reduce pain or shorten recovery
Malaysian Airlines flight MH17 claimed lives of HIV/AIDS cure scientists
Researchers, advocates, health workers among those on shot-down plane
World Solar Challenge contender claims new speed record
One charge sees Sunswift travel 500kms at over 100 km/h
Mwa-ha-ha-ha! Eccentric billionaire Musk gets his PRIVATE SPACEPORT
In the Lone Star State, perhaps appropriately enough
SMELL YOU LATER, LOSERS – Dumbo tells rats, dogs... humans
Junk in the trunk? That's what people have
All those new '5G standards'? Here's the science they rely on
Radio professor tells us how wireless will get faster in the real world
The Sun took a day off last week and made NO sunspots
Someone needs to get that lazy star cooking again before things get cold around here
prev story

Whitepapers

Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
How modern custom applications can spur business growth
Learn how to create, deploy and manage custom applications without consuming or expanding the need for scarce, expensive IT resources.
Reducing security risks from open source software
Follow a few strategies and your organization can gain the full benefits of open source and the cloud without compromising the security of your applications.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Consolidation: the foundation for IT and business transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.