Barnard Microsystems Limited

Developing Unmanned Aircraft Systems to benefit Mankind

Progress in the moD Grand Challenge: Part 2 - Progress 2

BML Grand Challenge progress 2

The Align T-REX 600 helicopter with payload

Version 1 Camera Platform

Trials using the Align T-REX 600

BML Grand Challenge progress 2

Simple rig used to check on the ability of the image stabilised SONY W200 camera to ciope with the vibration level on an Align T-REX 600 electric helicopter

BML Grand Challenge progress 2

Pairs of elastic bands are used to provide some isolation between the camera platform and the helicopter. This simple approach proved to be remarkably effective.

BML Grand Challenge progress 2

BML Grand Challenge progress 2

The Align T-REX 600 had no problems lifting the SONY W-200 compact camera.

BML Grand Challenge progress 2

BML Grand Challenge progress 2

BML Grand Challenge progress 2

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Trials using the Raptor 50

BML Grand Challenge progress 2

Problems here...

  • The camera is far to close to the hot, high vibration-level two stroke engine. After a short flight, the camera was scratched after being in contact with the two stroke engine.
  • A far better Camera Platform is required.

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Version 2 Camera Platform

BML Grand Challenge progress 2

The construction is made using balsa wood and carbon fibre rods. Two part epoxy resin is used to glue the parts together securely.

BML Grand Challenge progress 2

BML Grand Challenge progress 2

Test flight with the Align T-REX 600 electric helicopter.

BML Grand Challenge progress 2

BML Grand Challenge progress 2

BML Grand Challenge progress 2

  • Mounting a camera on the floor of the box would not give us 270 degree vision (left, forward and right hand side).
  • Improved design required.

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Version 3A low noise Camera Platform

BML Grand Challenge progress 2

We have built up the side walls to direct the sound energy upwards and to the rear. The rectangular hole on the right hand side is for the glow plug connector attachment for the Raptor 50 helicopter.

BML Grand Challenge progress 2

BML Grand Challenge progress 2

Practice flight without a camera.

BML Grand Challenge progress 2

BML Grand Challenge progress 2

Advantages of this design

  • There is a reduced noise level from the helicopter.
  • We should eb able to more easliy reduce the Visual Signature of the helicopter

Disadvantages of this design relative to one with no side walls

  • Heavier
  • The battery and engine gets hotter since there is a more restricted air flow
  • More fiddly to attach the helicopter and change the camera.

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Version 3B lightweight Camera Platform

Trials with the Align T-REX 600 helicopter

BML Grand Challenge progress 2

BML Grand Challenge progress 2

The Align T-REX 600 electric helicopter has been fitted with the lightweight Camera Platform and a forward pointing Canon G9 midsize digital camera. Spot the helicopter!

BML Grand Challenge progress 2

This is the option we have selected. We have an underslung camera that has a 270 degree viewing capability with an equipment compartment behind it the size of a shoe box.

  • More work needs to be performed to reduce the vibration level of the camera.

BML Grand Challenge progress 2

The next experiment involved taking snapshots from a side looking Canon G9 camera.

BML Grand Challenge progress 2

BML Grand Challenge progress 2

with the front landing skids providing an unexpected image obscuration...

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Trials with the Raptor 50 helicopter

BML Grand Challenge progress 2

BML Grand Challenge progress 2

BML Grand Challenge progress 2

BML Grand Challenge progress 2

  • We need to add some heat proof tubing to bring the exhaust fumes to the level of the landing skids.
  • The helicopter control is still very jerky, although the vibration level has been reduced.

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