Cat with absolute pointing capability
 

http://foxxaero.homestead.com/indrad_007.html

Amen!

Cat with absolute pointing capability
 

Bob Crantz wrote:
http://foxxaero.homestead.com/indrad_007.html


What happened to the tail rotor?
And when approaching the dock, can this vessel autorotate
for a safer landing?

DSK

Cat with absolute pointing capability
 

"DSK" wrote in message
...
Bob Crantz wrote:
http://foxxaero.homestead.com/indrad_007.html


What happened to the tail rotor?
And when approaching the dock, can this vessel autorotate
for a safer landing?

DSK

Just think of sitting in the cockpit and getting splattered with seagull
remains.

Glory!

Cat with absolute pointing capability
 

Nothing much said about it's performance.

"Bob Crantz" wrote in message
nk.net...
http://foxxaero.homestead.com/indrad_007.html

Cat with absolute pointing capability
 

I wonder if it is a hoax.

Amen!


"Bart Senior" .@. wrote in message ...
Nothing much said about it's performance.

"Bob Crantz" wrote in message
nk.net...
http://foxxaero.homestead.com/indrad_007.html

Cat with absolute pointing capability
 

I've wondered that also, because I've seen very little about it.
However, it does seem to be for real:
http://news.bbc.co.uk/1/hi/uk/1507825.stm

Also, from
http://www.sailingcatamarans.com/newsletters.htm
is this account:
The Multihull Centre have built a couple of unusual craft this year,
one being a windmill powered Ocean Twins 36. A 40' (12m) windmill
replaces the sails and drives a 5' (1.5m) diameter water propellor. It
has now sailed a couple of times, once when I was out on a test sail
on my Eclipse. The wind was about 20 knots true. I met it when we were
sailing goose-winged with one reef. BIG suprise! It pulled away from
us (just). Turning onto a reach I realised I had to steer properly and
then overtook it easily. To windward we took out the reef and were
doing 8.8 Knots at 32 deg to apparent wind. The windmill boat was
doing 7.5 knots straight in to the wind, so there wasn't much in it.
The boat is certainly a lot quicker than the conventionally rigged
Twins. I understand that the "sail area" of a windmill is the swept
area - in this case around 1200 sq ft. The standard boat has about 600
sq ft. But the boat trimmed aft as if it were under power when going
to windward and this would probably limit top speed. The boat is not
"point and steer", at least not yet, and its easy to stall by mistake
(no telltales or flapping sails to show what's happening) In light
winds the boat is less successful and won't go until there's 10 knots
true wind. But that's probably because of the water prop being
incorrectly pitched.

Bob Crantz wrote:
I wonder if it is a hoax.

Amen!


"Bart Senior" .@. wrote in message ...

Nothing much said about it's performance.

"Bob Crantz" wrote in message
link.net...

http://foxxaero.homestead.com/indrad_007.html

Cat with absolute pointing capability
 

I just wonder about the forces on the cabin roof and hull where the pedestal
mount. That's a big moment arm and the photos look almost retouched.

Here's an interesting wind powered vessel:

http://www.efluids.com/efluids/galle...rship_page.htm


I think it would do much better in light air than the wind propellor driven
cat. Of course it can't sail into the wind.

Amen!



"Jeff" wrote in message
...
I've wondered that also, because I've seen very little about it.
However, it does seem to be for real:
http://news.bbc.co.uk/1/hi/uk/1507825.stm

Also, from
http://www.sailingcatamarans.com/newsletters.htm
is this account:
The Multihull Centre have built a couple of unusual craft this year,
one being a windmill powered Ocean Twins 36. A 40' (12m) windmill
replaces the sails and drives a 5' (1.5m) diameter water propellor. It
has now sailed a couple of times, once when I was out on a test sail
on my Eclipse. The wind was about 20 knots true. I met it when we were
sailing goose-winged with one reef. BIG suprise! It pulled away from
us (just). Turning onto a reach I realised I had to steer properly and
then overtook it easily. To windward we took out the reef and were
doing 8.8 Knots at 32 deg to apparent wind. The windmill boat was
doing 7.5 knots straight in to the wind, so there wasn't much in it.
The boat is certainly a lot quicker than the conventionally rigged
Twins. I understand that the "sail area" of a windmill is the swept
area - in this case around 1200 sq ft. The standard boat has about 600
sq ft. But the boat trimmed aft as if it were under power when going
to windward and this would probably limit top speed. The boat is not
"point and steer", at least not yet, and its easy to stall by mistake
(no telltales or flapping sails to show what's happening) In light
winds the boat is less successful and won't go until there's 10 knots
true wind. But that's probably because of the water prop being
incorrectly pitched.

Bob Crantz wrote:
I wonder if it is a hoax.

Amen!


"Bart Senior" .@. wrote in message ...

Nothing much said about it's performance.

"Bob Crantz" wrote in message
link.net...

http://foxxaero.homestead.com/indrad_007.html