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Author Topic: Solar Powered Balloon  (Read 4559 times)
dhaslam
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« on: May 19, 2016, 11:31:42 AM »

It is surprising that no one has made one before now.  The Daily Mail gives a bit of a sinister  role but it isn't going to do much surveillance  through  typical British Isles  cloud cover.  It could however make the difference in  communications in difficult to reach areas.

http://www.dailymail.co.uk/sciencetech/article-3597099/The-giant-autonomous-SPY-ship-Military-firm-reveals-giant-drone-satellite-hybrid-snoop-Earth-stratosphere.html
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Heating  180,000 litre straw insulated seasonal store, 90X58mm tubes + 7 sqm flat collectors, 1 kW VAWT, 3 kW heatpump plus Walltherm gasifying stove
skyewright
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« Reply #1 on: May 19, 2016, 11:58:34 AM »

Quote
Can hover 12.4 miles (20km) in the air and reaches altitudes of 20,000 meters.
Quote
The ship can hold up into a 40-foot container for easy storage and transportation.
My emphasis.
Don't they have copy editors nowadays?
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David
3.91kWp PV  (17 x Moser Baer 230 and Aurora PVI-3.6-OUTD-S-UK), slope 40, WSW, Lat 57 9' (Isle of Skye)
TheFairway
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« Reply #2 on: May 19, 2016, 11:58:47 AM »

Alternative solutions are already flying...

http://www.telegraph.co.uk/finance/newsbysector/industry/defence/11854796/Airbus-builds-drones-that-fly-90-days-non-stop-for-UK-military.html

90 days non stop, 70000ft, 20mph.
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dhaslam
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« Reply #3 on: May 19, 2016, 01:28:33 PM »

The lighter than air version is different in that it can carry more equipment  and stay up much longer.    Also should be less expensive to build.   An important consideration is the amount of spare power available to power  communications equipment.   Balloons have the opposite problem to heavier than air  planes in that they  would disintegrate  if they go too high so  they have a way to limit altitude. 
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DHW 250 litre cylinder  60 X 47mm tubes
Heating  180,000 litre straw insulated seasonal store, 90X58mm tubes + 7 sqm flat collectors, 1 kW VAWT, 3 kW heatpump plus Walltherm gasifying stove
djh
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« Reply #4 on: May 19, 2016, 03:56:34 PM »

Lots of contenders! Here's another:

http://www.dailymail.co.uk/sciencetech/article-2570118/Worlds-longest-aircraft-revealed-300ft-long-airship-unveiled-UK-hailed-game-changer.html

It'll be interesting to see which are flying in quantity in 2021 or so.
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skyewright
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« Reply #5 on: May 19, 2016, 05:41:00 PM »

Quote
Cardington hangar, which now houses the aircraft, was built 100 years ago and is where they built the ill-fated airship, R101 (pictured), in the 1920s
My emphasis.
Err, that's the R100. The clue is the lettering on the side.

Don't they look at what they write?

PS. For anyone interested in the R100 & R101 or early aviation I highly recommend "Slide Rule", the auto biography of Nevil Shute. Before becoming a full time author he was involved in the early days of de Havilland, and then was Chief Calculator for the R100 (the one that worked just fine), working under Barnes Wallis.
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David
3.91kWp PV  (17 x Moser Baer 230 and Aurora PVI-3.6-OUTD-S-UK), slope 40, WSW, Lat 57 9' (Isle of Skye)
djh
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« Reply #6 on: May 20, 2016, 02:02:04 PM »

Err, that's the R100. The clue is the lettering on the side.

Don't they look at what they write?

I feel sure it's not the writer's fault. whistlie It's whoever they employ to photoshop the pictures who forgot to do it!  stir

Still, there is a lovely photo of R101 all cosy in the hangar at the bottom.
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skyewright
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« Reply #7 on: May 20, 2016, 06:29:30 PM »

I feel sure it's not the writer's fault. whistlie It's whoever they employ to photoshop the pictures who forgot to do it!  stir
Ah. Of course. That's be it. Much more likely...  facepalm
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David
3.91kWp PV  (17 x Moser Baer 230 and Aurora PVI-3.6-OUTD-S-UK), slope 40, WSW, Lat 57 9' (Isle of Skye)
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