What are the forces on a tied down glider?

On Aug 13, 11:01*am, Eric Greenwell wrote:
I see gliders tied down in a bewildering variety of ways, all apparently
"adequate" in the owner's mind.

Perhaps the real question is how well does it have to be tied down to
satisfy the insurance company that you were not negligent.

Another significant factor is what is it tied too. We seem to take
for granted that tie down wires etc that we find at the airport are
secure, but I've seen a whole line of cable and the anchors pulled out
of the ground. I used to trust the rings on the ramp at Hobbs until
one year I cleared all the dirt out of the hole and found the rings
corroded almost all the way through. Last time I flew there I dug
around until I found a good one and tied the CG hook to it.

Others would say why worry - put it in the box!

Andy

On Aug 13, 2:49*pm, Andy wrote:
Others would say why worry - put it in the box!

Kinda hard to do that if:

1) You've landed away from home and are waiting for the box to arrive

2) Touring in a self-launcher without a chase crew

On Aug 13, 1:58*pm, 5Z wrote:
On Aug 13, 2:49*pm, Andy wrote:

Others would say why worry - put it in the box!

Kinda hard to do that if:

1) *You've landed away from home and are waiting for the box to arrive

2) *Touring in a self-launcher without a chase crew

Williams Soaring is selling JJ's little tie-down kit that can be
carried in the ship.
JJ

There's a tiedown technique I developed 40 years ago when I decided that
steel stakes were too heavy and often didn't work in soft ground.

I bought some stout 10 gallon nylon bags with 1/2" nylon rope closures and a
lightweight folding shovel "trenching tool" from a military surplus store.
Three bags and one shovel were much lighter and took less space in the
glider than the steel screw-in stakes they replaced. The idea was to dig
holes and put the dirt in the bags and push the filled bags into the holes,
then tie the glider to the nylon ropes.

After using them, I tried to pull the bags out of the ground with a truck
but gave up and left the bags in the ground when the truck almost got stuck.
Even if the glider was able to pull a bag out of the ground, the
considerable weight of the dirt filled bag would still hold the glider. On
the other hand, steel stakes pulled out easily.

I've just heard that these bags are still available through military
sources.


"5Z" wrote in message
...
On Aug 13, 2:49 pm, Andy wrote:
Others would say why worry - put it in the box!

Kinda hard to do that if:

1) You've landed away from home and are waiting for the box to arrive

2) Touring in a self-launcher without a chase crew

"Andy" wrote in message
...

Others would say why worry - put it in the box!


"Glider trailers parked on the field were crushed from being tossed about
like dice."

(to be fair "The hangar right across the alleyway had it's roof and walls
blown off.")

http://iac78.org/newsletter/NL%20Fal...05%20Color.pdf Page 8.



Now, can someone explain why I can remember (and find) something I read
nearly 3 years ago, but I can't remember what I was doing on Friday when I
get back to work on Monday?


--
Geoff
The Sea Hawk at Wow Way d0t Com
remove spaces and make the obvious substitutions to reply by mail
When immigration is outlawed, only outlaws will immigrate.

How interested you were in Friday?

Capt. Geoffrey Thorpe wrote:
"Andy" wrote in message
...

Others would say why worry - put it in the box!


"Glider trailers parked on the field were crushed from being tossed
about like dice."

(to be fair "The hangar right across the alleyway had it's roof and
walls blown off.")

http://iac78.org/newsletter/NL%20Fal...05%20Color.pdf Page 8.



Now, can someone explain why I can remember (and find) something I read
nearly 3 years ago, but I can't remember what I was doing on Friday when
I get back to work on Monday?

On Aug 13, 8:13*pm, "Capt. Geoffrey Thorpe" The Sea Hawk @See My
Sig.com wrote:

Now, can someone explain why I can remember (and find) something I read
nearly 3 years ago, but I can't remember what I was doing on Friday when I
get back to work on Monday?

That's the way human brains work and why it never helps to cram the
night before a test. Your brain needs time to create links to new
information, making it easier to retrieve later. This all happens in
the background without your being aware of it.

-Doug

"Doug Hoffman" wrote in message
...

... it never helps to cram the night before a test.

That might be true for you, but certainly not for me. I have taken thousands
of tests over my lifetime (military, college, FAA). I consider myself very
good at taking tests and I can't think of once that I have failed to profit from
last-night and even last-minute preparation.

Vaughn

Vaughn Simon!
wrote:



"Doug Hoffman" wrote in message

...

... it never helps to cram the night before a test.

That might be true for you, but certainly not for me. I
have taken thousands
of tests over my lifetime (military, college, FAA). I
consider myself very
good at taking tests and I can't think of once that I have
failed to profit from
last-night and even last-minute preparation.


I envy your abilities. :-)

--
Regards,
Doug

** Posted from http://www.teranews.com **

"Doug Hoffman" wrote in message
...
I envy your abilities. :-)

Thanks, but I don't think that I have any special abilities.

I will say this: The items that I tend to study at the last minute are
probably the things that I will NOT be able to reliably recite two weeks after
the test. Passing a test is not proof that you will retain a satisfactory
percentage of the material, it is only proof that you passed the test.

Vaughn