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Is there a nose hook modification for a standard cirrus



 
 
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Old October 17th 17, 04:25 PM posted to rec.aviation.soaring
Dan Marotta
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Posts: 4,601
Default Is there a nose hook modification for a standard cirrus

Amen!

Using simple engineering (physics, if you like), the CG hook is about 1
foot displaced from the CG of the glider.Â* Assuming around 25 lb of
force applied to that arm (after the initial force required to overcome
inertia during acceleration (and you're on the ground at that time with
the tail wheel resisting the torque)), that yields about 25 lb-ft of
torque.Â* That's really not much to overcome.

It is my opinion that the real cause of a kiting incident is that the
glider pilot is either asleep at the helm and doesn't recognize what's
happening or that he wants to salvage the tow to avoid inconvenience or
expense.Â* Say all you want how quickly this develops, that too is anecdotal.

On 10/17/2017 8:54 AM, Tango Whisky wrote:
Le mardi 17 octobre 2017 16:13:50 UTC+2, a écritÂ*:
On Monday, October 16, 2017 at 8:29:08 PM UTC-5, Andreas Maurer wrote:

100000 hrs". Or something to that effect.
100% agree.

For 25 years my club has had two DG-300: One with nose hook and one
without. We had exactly one incidence where a DG-300 got the tow plane
out of control by pulling up its tail.

It was the one with the nose hook.

Andreas, pre Newtonian physics (Galileo) suggest that the nose hook is providing more stability, no non-stochastic statistics necessary to prove that! Why is it so hard to accept that you're better off with the tow line attached to a point far forward of the cg? Anecdotal stories are BS.

Of course a nose hook provides a little bit more of stability.
Now, if you *need* this little delta to stay safe, you shouldn't be flying solo in the first place.


--
Dan, 5J
 




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