Leaving Yourself An Out

[GeeBee]

48 minutes ago, EricJ said:

Alcohol slingers for propeller deicing came along not long after that, I think, in the 1920s and not later than the 1930s.   They're really simple and easy to implement and control, so it was a natural thing to do.

What is interesting about those early slingers was the props had no boot to control the flow. The fluid just slung out onto bare metal. The one thing I noticed however is the blade root for the most part was almost round on those Hamilton Standards. 

[Fly Boomer]

2 hours ago, GeeBee said:

What is interesting about those early slingers was the props had no boot to control the flow. The fluid just slung out onto bare metal. The one thing I noticed however is the blade root for the most part was almost round on those Hamilton Standards. 

Not 1920s but the Hamilton Standard on a Cessna 195 has essentially zero airfoil cross section between the spinner and the edge of the cowl opening.  The only way to get cooling air in there is if you are moving or facing into the wind.

 

[glenn reynolds]

I liked your post, and agree with the concept of having a plan B or alternative.  A couple of years ago I was cheerfully solid IMC with moderate icing at 8k.  Then the TKS system failed.  I learned later that I had blown a hose fitting in the belly panel so the system couldn't put out.  In that case my plan b was simple: advise Air Traffic Control that I was no longer FIKA and needed an IMMEDIATE descent and would require deviations around the weather cells I had been flying through.  Despite it being busy airspace (class b) ATC approved both and I landed 15 minutes later.  In this case I had altitude below and warmer temps below and of course staying out of the worst of the weather were my outs.  The TKS panel told me I had a failure which allowed me to take action before I was iced up.