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Hot Air Balloons

This fascinating series is a combination of historical seafaring, swashbuckling adventure, and high technological science-fiction. Join us in a discussion!
Re: Hot Air Balloons
Post by Theemile   » Fri Jan 22, 2016 1:19 pm

Theemile
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n7axw wrote:If you are using icus with gasoline you need electric system. With diesel you don't need juice, although you do need a way of starting it. Steam of course needs no juice to run at all.

Don

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While string and cable systems work with primitive control surfaces, much more powerful system are available with pneumatics - The ME 163 Komet used a charged air flask to run it's controls and control surfaces during it's (short) flight. It wasn't unheard of for a Komet to not have enough air pressure remaining for a controlled landing after a vigorous flight.
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RFC said "refitting a Beowulfan SD to Manticoran standards would be just as difficult as refitting a standard SLN SD to those standards. In other words, it would be cheaper and faster to build new ships."
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Re: Hot Air Balloons
Post by Loren Pechtel   » Fri Jan 22, 2016 6:27 pm

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n7axw wrote:If you are using icus with gasoline you need electric system. With diesel you don't need juice, although you do need a way of starting it. Steam of course needs no juice to run at all.

Don

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What are you going to use to replace glow plugs in the diesel?
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Re: Hot Air Balloons
Post by n7axw   » Fri Jan 22, 2016 8:07 pm

n7axw
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Loren Pechtel wrote:
n7axw wrote:If you are using icus with gasoline you need electric system. With diesel you don't need juice, although you do need a way of starting it. Steam of course needs no juice to run at all.

Don

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What are you going to use to replace glow plugs in the diesel?


My wife's hair dryer?? :lol:

More seriously, I'm not an expert on this, but as I understand it, glow plugs solve the problem of facilitating the starting of diesels in cold weather or in contexts where the heat generated by compression is insufficient to ignite the fuel in indirect compression engines.

Just visualising the problem, I can come up with a couple of possibilities. One would be to attach a steam engine to crank over the diesel until sufficient heat was added to the compression to allow the fuel to ignite. The other could use a jacket around the cylinder walls to allow the application of preheated liquid to warm the cylinder walls, once again adding supplemental heat to the compression to ignite the fuel.

That is done most efficiently by electricity, obviously, which we take for granted but Safehold cannot use. But still, there were diesels prior to glow plugs, so Safehold's problem should be solvable whether my suggestions are workable or not.

Don

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When any group seeks political power in God's name, both religion and politics are instantly corrupted.
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Re: Hot Air Balloons
Post by Weird Harold   » Fri Jan 22, 2016 9:42 pm

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Loren Pechtel wrote:What are you going to use to replace glow plugs in the diesel?


https://www.youtube.com/watch?v=idkGmpBHmcs

Charis could build one like that. A kerosene blowtorch would do just fine for the preheat where this one is set up for a propane torch to preheat.

More on Hot bulb engines.
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Answers! I got lots of answers!

(Now if I could just find the right questions.)
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