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  Topic: GPS Guided Mortar Debuts In Afghanistan
Chris32

Replies: 35
Views: 17951

PostForum: News And Latest Information   Posted: Sat Apr 16, 2011 4:58 pm   Subject: GPS Guided Mortar Debuts In Afghanistan
Thinking back to my gliding days, where you have very simple control surfaces - rudder on the tail and ailerons on the wings.

If you tried to turn using the rudder alone, you pretty much just carr ...
  Topic: GPS Guided Mortar Debuts In Afghanistan
Chris32

Replies: 35
Views: 17951

PostForum: News And Latest Information   Posted: Sat Apr 16, 2011 4:50 pm   Subject: GPS Guided Mortar Debuts In Afghanistan
Ah, I see it all now Idea Simplistically, the control surface on the front provides (say) lift and the fins at the back hold the back down causing a rotation force through the centre of mass thus ch ...
  Topic: GPS Guided Mortar Debuts In Afghanistan
Chris32

Replies: 35
Views: 17951

PostForum: News And Latest Information   Posted: Sat Apr 16, 2011 3:05 pm   Subject: GPS Guided Mortar Debuts In Afghanistan
Part of Newton's first law states that 'An object that is in motion will not change its velocity unless an unbalanced force acts upon it'. Surely it is because the steerable front or rear fins cause a ...
  Topic: GPS Guided Mortar Debuts In Afghanistan
Chris32

Replies: 35
Views: 17951

PostForum: News And Latest Information   Posted: Sat Apr 16, 2011 12:14 pm   Subject: GPS Guided Mortar Debuts In Afghanistan
In the nose, a GPS receiver and computer controlled aerodynamic directional fins keep the round on its programmed trajectory. Folding fins in the tail provide stability.

That makes perfect sense an ...
  Topic: GPS Guided Mortar Debuts In Afghanistan
Chris32

Replies: 35
Views: 17951

PostForum: News And Latest Information   Posted: Fri Apr 15, 2011 8:49 pm   Subject: GPS Guided Mortar Debuts In Afghanistan
Then how on earth do laser guided smart bombs with steerable tail fins work then?

By having support control surfaces on either side of the centre of mass.
  Topic: GPS Guided Mortar Debuts In Afghanistan
Chris32

Replies: 35
Views: 17951

PostForum: News And Latest Information   Posted: Fri Apr 15, 2011 6:40 pm   Subject: GPS Guided Mortar Debuts In Afghanistan
I can't for the life of me see how it works.

If it is a standard mortar shell then how can it control its trajectory once it is out of the launching tube?

"The GPS and an accompanying computer c ...
  Topic: GPS Guided Mortar Debuts In Afghanistan
Chris32

Replies: 35
Views: 17951

PostForum: News And Latest Information   Posted: Fri Apr 15, 2011 9:32 am   Subject: GPS Guided Mortar Debuts In Afghanistan
I can't for the life of me see how it works.

If it is a standard mortar shell then how can it control its trajectory once it is out of the launching tube?
  Topic: Spare Screen Covers
Chris32

Replies: 23
Views: 11788

PostForum: Satmap Active 10   Posted: Sun Apr 25, 2010 9:48 am   Subject: Spare Screen Covers
The 10AW is plenty big enough. The one that I have is exactly the right height, the zip does up easily. Width-wise it is a bit wider than the A10, which lets you get your fingers down the sides to l ...
  Topic: Screen Visibility
Chris32

Replies: 13
Views: 4931

PostForum: Satmap Active 10   Posted: Thu Oct 15, 2009 1:32 pm   Subject: Screen Visibility
I have Zagg protectors on several devices, including cameras and a pda and I have never had any real problem in applying them following the instructions given.

I took the outer cover off my Satmap ...
  Topic: Channel 5 Gadget Show 19th October 2009 - sports GPS review?
Chris32

Replies: 8
Views: 4700

PostForum: Satmap Active 10   Posted: Thu Oct 15, 2009 1:13 pm   Subject: Channel 5 Gadget Show 19th October 2009 - sports GPS review?
I watch it, but only from a recording, so that I can fast-forward through the rubbish bits (of which there seems to be a lot more lately).
  Topic: Satmap on Jersey
Chris32

Replies: 5
Views: 2908

PostForum: Satmap Active 10   Posted: Mon Jul 13, 2009 7:35 pm   Subject: Satmap on Jersey
Thanks Robert - I think we may be in danger of confusion, but perhaps it is only me . . . . Laughing

A 1:25000 map of Jersey is available on paper, published by the States of Jersey, Planning and En ...
  Topic: Satmap on Jersey
Chris32

Replies: 5
Views: 2908

PostForum: Satmap Active 10   Posted: Sun Jul 12, 2009 5:27 pm   Subject: Satmap on Jersey
We did some walking on Jersey recently (Channel Islands that is, not N.Y.) and I looked for a Satmap map before we went, but couldn't find one, so I left the A10 at home and used 1:25000 OS type map. ...
  Topic: Disappearing Routes
Chris32

Replies: 13
Views: 4619

PostForum: Satmap Active 10   Posted: Fri May 15, 2009 10:56 pm   Subject: Disappearing Routes
It looks like the "Options" in the new SatSync version released today my fix this problem.

Yep - I take it all back - have just loaded the new version and at first sight it works perfectly.

Exce ...
  Topic: Disappearing Routes
Chris32

Replies: 13
Views: 4619

PostForum: Satmap Active 10   Posted: Fri May 15, 2009 10:28 pm   Subject: Disappearing Routes
Yep - I checked mine carefully this evening and I get a very similar effect.

The Satsync screen shows the route name alloted to the imported file, but on the Satmap I just see "Route name". If I i ...
  Topic: Disappearing Routes
Chris32

Replies: 13
Views: 4619

PostForum: Satmap Active 10   Posted: Thu May 14, 2009 11:00 pm   Subject: Disappearing Routes
I have had some problems with Satsync, but assumed that as a new boy I was just being incompetent . . . . . Shocked

I'll have to make better records of what happens next time.
 
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