Here FTB, I stole this for you from some guy on PPRUNE:

The reciprocating Convairs have a wing heated by augmentor duct air from the exhaust. This brings to mind an important distinction.

There are two types of heated wing systems. The system used by the Convair is known as a "running wet" system. It is not capable of evaporating the water impinging the wing. Rather, it simply prevents it from freezing. This usually, as in the Convair, leads to re-freezing aft of the protected surface. The result is typically a sawtooth pattern of thin ice ridges, more longitudinal than lateral.

The more common installation is known as a "fully evaporative" system. This is designed to evaporate the liquid water impinging the wing. The advantage, of course, is the wing will be long gone before the water re-condenses.

One caveat is that all evaporative systems necessarily transition through a running wet period while warming up to operating temperature. This requirement is what drives things like minimum N1 during descent; it wouldn't do to have the system cool into a running wet condition when the power is retarded. This is also one of the shortcomings of such designs as the MD80, in which the wing is cooling while the tail is being heated, and vice versa.

Both types of systems can be used as either anti-ice or de-ice systems. Boeing currently recommends a de-ice method in most designs, although once you select it, it functions as an anti-ice system if you just leave it on.

The required energy is driven by the wing surface area that is intended to be heated, which in itself is a function of how much chord will be protected. It also depends on the operating speeds in the design specification, and whether the system will run wet or evaporate. It can be pretty substantial. Most turboprops try to recover as much energy from the gas turbine as possible; anything that goes out the tailpipe is essentially wasted (yeah, they count it as thrust, but...). So bleed air is a precious commodity, and the energy balance between needs and availability drive manufacturers toward boots. I suppose you could hang a couple of Allisons out there or something like that, but then your specific fuel consumption goes through the roof and the customers don't really care for that.


And all this time I thought they only had anti-skynyrd.

 

Very wise ACL;

I have been doing something else for as long as I have been at DAL. We have done okay and at times very well. The reality of my situation is that I diversified my investments and have 11 high end properties that, while owned outright, are not liquid at this time. Our nest egg is nice, but I dont consider us wealthy.

It doesn't mean I am complaining, all I have to do is look around. The US census said 54% of adult americans dont have $2500 saved, 80% dont have $100k and 90% dont have 200k. My family is not in their boat.

While I count my blessings, I also live very middle class; used cars, bargain grocery shopping, etc. I still save like crazy. I think I had the benefit of growing up poor.

My advice about side business is: Do something you love. Create it yourself. Grow it because you love it and you do it well. Don't start it through debt, start it with used equipment that is owned. Buy new equipment in cash when you can.

Being an employer is a gift. Good employees are a joy, like your own child. Bad employees get the door. Really bad employees get a phone call to the police. Being in charge is a wonderful responsibility because families count on you for their livliehood. You get to see them and their kids grow up, they become like your family.

Some businesses dont go anywhere. Some start making you money from day 1. The latter are the ones you want to be in. Sounds simple, but I've had both and if making money is not happening, drop it like a hot potato.

Good luck with your decisions.

 

Might that apply to the airline biz?

GF

 

airlines are utilities.

 

So negative on all of this. Why don't we get positive and get 30% plus back and stop all this b.s.
If you walk in to buy a car with sticker price you will get it.
Talking about switching airlines is sad and highlights what our union has done in the past 10 years.
We as a pilot group need to get strong and it's not doing us any favors on this web board b.s about going to another airline. Its like giving up on your team. I'm all for DPA and already sent my card in, but all this another airline is not helping you and your kids.

 

Very well said, actually so well that I quoted the entire post.

 

Great advice.

I had 14 properties in the DFW areas but sold all of them in 2004-05, and am very glad I did. I wish I still had them, but it was the correct decision at the time.

Debt can be a pain as we can see with the airline industry. You are not you own master, by a long shot. I have always been looking for something that my wife and I could manage together, and this one kind of took us by surprise. Out of left field if you will. After three months of doing all of the forensics on the company and the two holding companies, we are about at the point of making the decision on which way to go. We are not there yet, and at any point I am not convinced that it is a good deal, I will walk away. That is key. Never get too invested, emotionally or otherwise that you cannot walk away.

I do agree that properties that are owned outright are always a good long term hold. We have a bunch of nice land in Texas that we plan to hold until at least the day I retire.

I was once my own boss and an employer, and you are correct, it is a gift. Nothing on the scale we may take on, but I understand what you are saying. As you hint, there is more to this than just money, if is about giving back to community as well. As with many turns in life, it is not something I envisioned five years ago, but when we were presented with the opportunity it really just hit us over the head.

Either way, I have enjoyed the process.

 

Sadly, it highlights what a lot are thinking. Frankly DAL offers a lot that SWA cannot. I choose here for a reason. The fact is that we are all flying a lot more hours than any generation of pilot has done previously, and that will take a toll on our health. It is just smart business to diversify you income stream.

 

But that should change, (about flying more than any generation)
Sad day when ACL punts. I know your drive and it really speaks out if you don't have hope.
So you are saying you income stream will not come from DAL. We must be getting a ....... contract.
If Delta had any hope of getting things back in order for the pilots we need guys like you with your head up high and not thinking of a way out to make money elsewhere.
Your a smart guy, so for you to say we need to make money on the side, says alot. Guys said the same thing at the regional level. It don't want to compare DAL vs the regionals.

 

Hey boomer, really nice find, that was interesting stuff.