Feeds

Watch LIVE tomorrow: LOHAN team attempts second pop at SPEARS

Pi-powered cam to beam snaps of Saturday's ballocket control board test flight

  • alert
  • submit to reddit

The Power of One Infographic

This afternoon, The Register's Low Orbit Helium Assisted Navigator (LOHAN) team will assemble in Blighty's Baikonur (aka Brightwalton, Berkshire) ahead of tomorrow's flight of the Special Project Electronic Altitude Release System (SPEARS) control board.

Specifically, this is a test flight to check that the aforementioned controller electronics work high up in the sky, a useful step ahead of an official launch of our LOHAN spaceplane. And you'll be able to follow Saturday's events via radio and Twitter, and live pictures and position tracking on the web - provided everything goes to plan.

Click here for a bigger version of the LOHAN graphicThe test should hopefully confirm that SPEARS will fire the custom igniter for our Vulture 2 spaceplane's rocket motor.

The control board, part of a package carried aloft by a helium balloon, determines its altitude from a u-Blox MAX-6 GPS device, and at a programmed height fires the igniter via an external 12V battery pack. For safety reasons, the firing circuitry is disabled below a predetermined "safe" height, above which SPEARS is armed for action.

As a failsafe, SPEARS can also be commanded to fire the igniter if its accelerometers detect it's falling below the programmed trigger height, that's to say, if the balloon bursts prematurely.

Of course, there's always the chance SPEARS will go titsup, so the payload for tomorrow's flight will include the Clockwork High Altitude Release Mechanism (CHARM) - an old-school bit of kit in the best tradition of garden-shed boffinry that will fire the igniter some time after launch, depending on the balloon's estimated rate of ascent.

The front of the box, with the timer dial and switch

CHARM'd, I'm sure ... The front of the box, with the timer dial and switch

So, we reckon we've got that covered, and to add a little spice to the mix we'll be using the igniter as a pyro cut-down to release a small secondary payload - codenamed "CHAV" - containing Dave Akerman's* Raspberry Picam set-up, which will be beaming back live images from aloft.

Those readers with a radio receiver that can receive USB in the 70cm band are invited to join the party, and there's a guide on how to track our launch right here.

The transmission details are:

  • Main payload: SPEARS Board ($$SPEARS 434.650MHz) and a backup tracker ($$REHAB 434.600Mhz).
  • Secondary payload: Raspberry Pi transmitting Slow Scan Digital Video ($$CHAV 434.075MHz) and a backup tracker ($$SHUTIT 434.495Mhz).

LOHAN team member Anthony Stirk notes: "Transmission format is RTTY speeds, so please select autoconfigure in DL-FLDigi."

In the event of dubious wind predictions, we'll also be launching another payload before the main event to check conditions at altitude. This will be on 434.545Mhz and its callsign will be $$PAVA.

Subject to 3G coverage, you'll be able to tune into the live launch and pursuit of the main payload at http://www.batc.tv/streams/ukhas. A second pursuit team will chase the secondary payload, and will be appearing for your viewing pleasure at http://www.batc.tv/streams/ukhas2.

Although batc.tv has its own chat facility, join us at in the #highaltitude channel on Freenode to chip in your two bits' worth as the drama unfolds.

If we get our act together, one of the pursuit teams will be tweeting exciting updates here.

If you prefer to follow the action on a map, you can do that down at http://www.spacenear.us/tracker.

And if all that wasn't enough, the live Picam images from the CHAV payload will land at http://ssdv.habhub.org/.

Right, so that just leaves the small matter of what happens if we have a second encounter with the English Channel. Well, we're not taking any chances, and have recruited a miniature specialist who'll spring into action in the event of an unplanned ditching:

The payload box with a Playmobil frogman strapped to the side

Never again ... We recruit Reg frogman to rescue project if it ends up in the drink again

Now, if you'll excuse us, we're off for a pre-flight mission briefing in the pub. See you tomorrow at around 10:00 UTC for some top quality high-altitude tomfoolery. ®

Bootnote

* Dave recently showed once again he really has got the Right Stuff when he launched a skydiving fluffy football mascot. Good show:


Further LOHAN resources:

  • New to LOHAN? Try this mission summary for enlightenment.
  • You can find full LOHAN coverage right here.
  • Join the expert LOHAN debate down at Reg forums.
  • All the LOHAN and Paper Aircraft Released Into Space (PARIS) vids live on YouTube.
  • For our SPB photo archive, proceed directly to Flickr.
  • We sometimes indulge in light consensual tweeting, as you can see here.

LOHAN - A Special Projects Bureau production in association with...

  • 3T RPD logo
  • University of Southampton logo
  • Applied Vacuum Engineering logo
  • Escher Technologies
  • Flashpoint Fireworks logo
  • HAB Supplies logo
  • Rock 7 logo

Paper Aircraft Released Into Space

Eight steps to building an HP BladeSystem

More from The Register

next story
Malaysian Airlines flight MH17 claimed lives of HIV/AIDS cure scientists
Researchers, advocates, health workers among those on shot-down plane
Forty-five years ago: FOOTPRINTS FOUND ON MOON
NASA won't be back any time soon, sadly
Mwa-ha-ha-ha! Eccentric billionaire Musk gets his PRIVATE SPACEPORT
In the Lone Star State, perhaps appropriately enough
MARS NEEDS OCEANS to support life - and so do exoplanets
Just being in the Goldilocks zone doesn't mean there'll be anyone to eat the porridge
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
Diary note: Pluto's close-up is a year from … now!
New Horizons is less than a year from the dwarf planet
Boffins discuss AI space program at hush-hush IARPA confab
IBM, MIT, plenty of others invited to fill Uncle Sam's spy toolchest, but where's Google?
prev story

Whitepapers

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.
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.
Application security programs and practises
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.