Do the ducted fans work underwater?

[XLjedi]

Figured I'd just ask before wasting time testing them.

[ElfBossHogg]

No. They only work in air.

[XLjedi]

So much for that idea.

Thanks for saving me the time of testing it.

[Malli]

引用自 XLjedi：

So much for that idea.

Thanks for saving me the time of testing it.

They will work fine if they are airtight (enclosed) belive it or not. I do it for my jet powered subs

[ElfBossHogg]

引用自 𝙎𝙉𝙐𝙂𝙂𝙄𝙀𝙕：

引用自 XLjedi：

So much for that idea.

Thanks for saving me the time of testing it.

They will work fine if they are airtight (enclosed) belive it or not. I do it for my jet powered subs

I'm surprised by that. I've had personal experience where if the altitude is detected as being below 0 the fan will register as in water. This was for an enclosed ducted fan test. This was a while back so I wouldn't be surprised if things have changed

[Malli]

引用自 ElfBossHogg：

引用自 𝙎𝙉𝙐𝙂𝙂𝙄𝙀𝙕：

They will work fine if they are airtight (enclosed) belive it or not. I do it for my jet powered subs

I'm surprised by that. I've had personal experience where if the altitude is detected as being below 0 the fan will register as in water. This was for an enclosed ducted fan test. This was a while back so I wouldn't be surprised if things have changed

I have boats and subs that are on the ocean floor and they work just fine using only jets and jet fuel

[ElfBossHogg]

I'd be concerned that jets in an enclosed space will work for much longer. A jet is heavily dependent on large amounts of airflow. I could see it being revisited in the future.

[XLjedi]

引用自 ElfBossHogg：

I'd be concerned that jets in an enclosed space will work for much longer. A jet is heavily dependent on large amounts of airflow. I could see it being revisited in the future.

Are we even talking the same ducted fans?

I mean the electric powered "Small Ducted Fan" not the "Jet Intake" ducted fan...

I'd like to use the small ducted fan for dive/ascent because it has a thinner profile compared to a standard prop, and I could probably mount it in a dive plane. I'd like to literally use it as a propeller-type thing.

[Malli]

引用自 XLjedi：

引用自 ElfBossHogg：

I'd be concerned that jets in an enclosed space will work for much longer. A jet is heavily dependent on large amounts of airflow. I could see it being revisited in the future.

Are we even talking the same ducted fans?

I mean the electric powered "Small Ducted Fan" not the "Jet Intake" ducted fan...

I'd like to use the small ducted fan for dive/ascent because it has a thinner profile compared to a standard prop, and I could probably mount it in a dive plane. I'd like to literally use it as a propeller-type thing.

I was talking about using jet engines to produce power and then power the small fans that propel you. The square looking ones ones.

[XLjedi]

引用自 𝙎𝙉𝙐𝙂𝙂𝙄𝙀𝙕：

引用自 XLjedi：

Are we even talking the same ducted fans?

I mean the electric powered "Small Ducted Fan" not the "Jet Intake" ducted fan...

I'd like to use the small ducted fan for dive/ascent because it has a thinner profile compared to a standard prop, and I could probably mount it in a dive plane. I'd like to literally use it as a propeller-type thing.

I was talking about using jet engines to produce power and then power the small fans that propel you. The square looking ones ones.

So the "Small Ducted Fan" will work underwater like a propeller then?

(I don't care what powers it at this point)

[ElfBossHogg]

Nope, it will not work in water. How it may work is if it is in enclosed space inside the vessel. From what people are saying it's providing thrust as if in the air but ignoring the laws of physic about equal and opposites. :) I suspect that will be revisited in the future.

[XLjedi]

OK, that's what I thought... thanks