How to Avoid Dynamic Rollover in Helicopters

What is dynamic rollover?

Dynamic rollover sounds

like a phrase that could be used by the lottery businesses. Each and every

helicopter pilot is mindful that dynamic rollover can be a difficulty when

taking-off or landing a helicopter. Dynamic rollover is caused when a

wheel or a skid on the helicopter turns into attached to the ground and acts

as a pivot point that the helicopter can roll close to. It is significantly more

likely to happen on get-off, and if it is not dealt with appropriately, the

helicopter will roll more than onto its side and get significant harm.

This does sometimes occur to experienced pilots but is significantly more

probably to take place with low time pilots.

Have you ever attempted to pull the

handle of a door and the door refuses to move? Then, when you push the

handle the door opens and will take you by shock. You had been not expecting

it to happen. The same point could happen throughout a take-off. You raise the

collective smoothly and a single of the skids lifts of the ground. You anticipate the other skid to adhere to but unfortunately it is caught on

one thing and refuses to move. Your organic reaction is to raise the

collective additional to make the helicopter break totally free of the ground but

all you accomplish is a quick roll of the helicopter towards the caught skid.

The inertia of this roll could be sufficient to preserve the helicopter

rolling more than even although you now reduce the collective. The inevitable

takes place and the helicopter rolls over unto its side and suffers extreme

injury. The all-natural reaction to raise the collective to right the

problem is the incorrect response and you need to discipline yourself to do the

correct action which is decreasing the collective smoothly till the two

skids are on the ground.

Outcomes

The outcomes of a

dynamic rollover are generally very serious. The helicopter is usually

destroyed. The injury from a helicopter rolling more than at the finish of an

auto-rotation is significantly less than the injury brought on by dynamic rollover.

This is since during an auto-rotation the blades are unpowered and if

it rolls more than, it will rapidly come to rest. Throughout a take-off nevertheless,

you will be using a lot of electrical power and if the helicopter subsequently

rolls over, it will not come to rest so quickly and a lot much more harm

will occur.

Get-off

It can be seen that get-offs may

cause a issue. Icy ground and frozen skids can be a real difficulty.

Muddy or sticky ground, rocks, joints in concrete can all result in skids to

catch and lead to dynamic rollover. Care must be taken in the course of each

consider-off but specifically the initial take-off. Make sure you are looking

well ahead. Raise the collective smoothly until finally you feel the helicopter

get light on the skids. From this stage onwards, you need to move the

collective very slowly. The closer you get to taking off, the slower the

collective must be moving.

Try a little "wiggle" by moving the pedals

slightly. This will give you an indication if each skids are totally free. If

you are on a degree surface, 1 skid will almost certainly commence to rise just before

the other.

It is crucial not to rush the collective at this stage. If

you feel the helicopter is rolling above as well far, smoothly lower the

collective and make sure that both skids are on the ground before

recommencing the get-off. When both skids (wheels) are clear of the

ground, get the helicopter to a secure height to make sure that the skids

do not inadvertently catch on one thing.

Naga303 When the helicopter is on the

ground with the blades turning, by no means consider your hand off the collective

unless of course the collective is fully down and locked. There have been several

circumstances of passengers moving the collective or collectives vibrating

up till the helicopter rolls over.

Creating certain that the aircraft is

inside of its balance limits will also make certain that you do not run out of

cyclic travel during regular get-offs and landings, therefore decreasing the

threat of dynamic rollover.

Further info on this topic could be

discovered at Dynamic Rollover in my helicopter instruction website.