RC across the Atlantic
Thread Starter
Joined: Sep 2002
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From: This side of the line
RC across the Atlantic
Congrats to Maynard Hill, 70, and not seeing too well, on his successful crossing of the Atlantic by a model airplane.
http://www.theglobeandmail.com/servl...tory/National/
http://www.theglobeandmail.com/servl...tory/National/
Joined: Jun 2001
Posts: 87
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From: Dublin, Ireland
Brilliant!
As a "retired" modeller - I am seriously impressed!
See http://tam.plannet21.com/tam5.htm for further info.
See http://tam.plannet21.com/tam5.htm for further info.
Joined: Feb 2000
Posts: 1,993
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From: UK
Techman
I suspect that it was indeed R/C....... for the take-off and up to cruise. I've just realised why Maynard Hill's name rang a bell. One of my old R/C Annuals carried an article on a previous record of his - the R/C altitude record.... something around 29,000 ft.
I wonder if he was using the same sort of auto-pilot which he had then - an extraordinary device using sensors on the extremities which measured the static electricity voltage. It appears that there is a very marked ramp of S.E voltage relative to the surface directly below and that voltage difference was used to drive the pitch and roll servos. The sensitivity of the device was such as to allow full control with the C.G. at some ridiculously aft position (quite impossible for manual control). Because the inputs are relative to the surface, mountain flying or similarly uneven references are a no-no.
Anyone have anything further,please?
I suspect that it was indeed R/C....... for the take-off and up to cruise. I've just realised why Maynard Hill's name rang a bell. One of my old R/C Annuals carried an article on a previous record of his - the R/C altitude record.... something around 29,000 ft.
I wonder if he was using the same sort of auto-pilot which he had then - an extraordinary device using sensors on the extremities which measured the static electricity voltage. It appears that there is a very marked ramp of S.E voltage relative to the surface directly below and that voltage difference was used to drive the pitch and roll servos. The sensitivity of the device was such as to allow full control with the C.G. at some ridiculously aft position (quite impossible for manual control). Because the inputs are relative to the surface, mountain flying or similarly uneven references are a no-no.
Anyone have anything further,please?
Joined: Jun 2001
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From: due south
Is this what you are referring to Cornish Jack ?
http://www.futaba-rc.com/radioaccys/futm0999.html
Still available and quite cheap at about $50
http://www.futaba-rc.com/radioaccys/futm0999.html
Still available and quite cheap at about $50
Joined: Jun 2001
Aviation Qualifications: LAME
Posts: 676
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From: Over The Hills And Far Away
Sure CJ, for terminal control at both ends of the routing it was R/C. But for the record breaking bit it was not.
Last edited by Techman; 15th August 2003 at 00:06.
Joined: Feb 2000
Posts: 1,993
Likes: 512
From: UK
Henry C
Thanks for that. I've been away from R/C for some time and hadn't seen that little gizmo.
The Maynard Hill device goes back to the very early days of model R/C - at, or about, the introduction of proportional instead of bang-bang. That's what made it so remarkable .... most of the radio control at that time was done with valve Tx/Rxs!!!
Techman - yes, thanks......... could be that that sort of pedantry would invalidate quite a few records.
Anyway, having been there, done that (not very well) and got an aged, tattered t-shirt I reckon that Mr Hill's efforts deserve a very large round of applause as much for the vision as for the accomplishment.
Thanks for that. I've been away from R/C for some time and hadn't seen that little gizmo.
The Maynard Hill device goes back to the very early days of model R/C - at, or about, the introduction of proportional instead of bang-bang. That's what made it so remarkable .... most of the radio control at that time was done with valve Tx/Rxs!!!
Techman - yes, thanks......... could be that that sort of pedantry would invalidate quite a few records.
Anyway, having been there, done that (not very well) and got an aged, tattered t-shirt I reckon that Mr Hill's efforts deserve a very large round of applause as much for the vision as for the accomplishment.
