Feeds

LOHAN in FIGHT to DEATH with brace of cantankerous canards

Plucky Playmonaut back in cockpit after much servo-related duckery

  • alert
  • submit to reddit

The Power of One Infographic

Our plucky Playmonaut is back in his seat in the Vulture 2 spaceplane following the recent servo meltdown which had prompted his rapid exit from the vehicle.

The miniature emergency required a servo swap-out, and while we were about it, we decided to upgrade the linkages to the canards, and bolt the cantankerous forewings to the aircraft once and for all.

We say cantankerous, because they've proved a little more bothersome than we anticipated. Here are said control surfaces straight out of the box, as they arrived from the 3D printers...

The canards as they arrived from the 3D printers

...and here's how they relate to the Vulture 2's nose section, according to the CAD drawings:

CAD plan view of the Vulture's nose and canards

CAD axonometric view of the Vulture's nose and canards

Naturally, it all looked good on paper, and indeed after a quick paintjob...

The painted Vulture 2 canards

...although nothing on the Low Orbit Helium Assisted Navigator (LOHAN) project ever runs according to plan.

The canards connect to the spaceplane via 6mm threaded rod glued into the canard (visible in above snap), and which pass through a nylon bush into the plane's interior:

The side of the fuselage showing the canard connecting rod bush

The corrugated surface here is a bonus, because it reduces friction between plane and canard. However, when we bolted the canard on, too little torque on the bolt allowed the forewing to rattle about, while too much caused the damn thing to jam.

Cue a delivery of specialist adhesive stuff, viz: Loctite 770 primer and Loctite 406:

Bottles of Loctite 770 and 406, plus a sheet of Teflon

This potent pair of chemicals is used for bonding troublesome plastics and the like, including polytetrafluoroethylene (PTFE), which is how we decided to resolve the chafing canard issue.

So, take one sheet of 0.5mm Teflon, glue to canard and lovingly trim, and Bob's your uncle:

Three photos showing Teflon glued to one of the canards

Suffice it to say, this did the trick, allowing us to bolt on the canards tightly enough to prevent wobble, without putting undue strain on the servos.

Eight steps to building an HP BladeSystem

Next page: Sticky delights

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
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
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
Diary note: Pluto's close-up is a year from … now!
New Horizons is less than a year from the dwarf planet
Forty-five years ago: FOOTPRINTS FOUND ON MOON
NASA won't be back any time soon, sadly
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.