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Archive for October, 2016
Posted by PeterVRC | Oct 01, 2016 @ 09:23 PM | 13,409 Views
I thought I will list my favorite method of bungee launching aircraft.
There are a few ways people bungee launch models:

1) Use a ramp
2) From the ground
3) From a dolly

It seemed that very few people use a Bungee Dolly method. Ramps lead the way by far, followed by just straight off the ground.

Ramps work ok, but you do need to 'make one' and cart those pieces around - assemble - disassemble....
Because the plane leaves the ramp some distance off the ground it leaves more room for 'heading down', whether with Wings Level, or Wings Angled into a cart-wheel!
The plane also has to 'drag' along the ramp rails - the wings usually - so they can wear, or things could catch too. eg control horns etc.

From the ground is the easiest - you don't need to take much stuff at all. Just the main bungee part.....
But dragging a plane across the ground is not going to be great for its underside - though you do have to LAND on the underside too. But at least only landing means HALF the wear and tear! lol.

After I thought about it a lot I decided that a Bungee DOLLY was the only way to do this in an acceptable and very safe manner!!

1) The plane does not get dragged on the ground - as per ground bungee.

2) The lift-off is exactly like a take-off from landing gear. Far more gradual (angles etc) and even looks like a plane taking off from a runway! Not a plane 'thrown into the air' and 'must fly' - as per from a ramp.

3) There is no 'dragging' - the plane lifts off UPWARDS off the dolly at a shallow Angle of Attack (as per a normal runway take-off), which means a much more 'docile' and 'slow' move into whatever problem state it might head into due to offset trims etc.

So that was that... the Dolly method wins hands down!

....