CRJ de/anti ice

P

Philip

New Member
I seem to remember from a systems class I took that the CRJ doesn't have any anti or de-ice on the tail. 2 things, did I misunderstand? Second, why doesn't it?
 
Philip said:
I seem to remember from a systems class I took that the CRJ doesn't have any anti or de-ice on the tail. 2 things, did I misunderstand? Second, why doesn't it?
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1) Nope, nothing back there.

2) Because it was certified with out it.

~wheelsup
 
Probably didn't misunderstand. The 727 didn't have any tail de-ice either if I remember correctly.

And probably doesn't need it.
 
Doug Taylor said:
Probably didn't misunderstand. The 727 didn't have any tail de-ice either if I remember correctly.

And probably doesn't need it.
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but why?

Why the hell doesn't it build ice back there?
 
Design! You'll have to probably ask someone that's a little more current in aero than I.

Turboprops, however, can build bone-chilling amounts of ice.

I wish I had a digital camera back in my BE-1900D days, the amounts of ice that accumulated on unprotected surfaces on the aircraft was incredible. Sometimes to the point that some of the other pilots on the ramp in MKE would walk over and go "Holy *blank*!"
 
The -88 has horizontal stab deice, but I'm not sure about the vertical. I'm way too lazy to go downstairs and find the manual.
 
Doug Taylor said:
Design! You'll have to probably ask someone that's a little more current in aero than I.

Turboprops, however, can build bone-chilling amounts of ice.

I wish I had a digital camera back in my BE-1900D days, the amounts of ice that accumulated on unprotected surfaces on the aircraft was incredible. Sometimes to the point that some of the other pilots on the ramp in MKE would walk over and go "Holy *blank*!"
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someone around here must know. Plenty of guys with CRJ types bouncing about.

it's been bothering me for a couple of years actually.
 
No CRJ type but.....

Well, you know how everybody says you could teach a monkey to fly a CRJ? You could, if the plane didn't already have a monkey working on it. Most CRJs come with a factory installed Deice monkey. Right above the APU firebox there is a small box that is home to the monkey. There are ice detectors on the top of the tail and when they detect ice, the monkey comes out of his box (he wears a parachute just in case) and uses to rubber mallets to knock the ice of the surface. He then goes back into his home which is kept warm by the APU and is linked to the packs for pressurization. As far as I know you can MEL the deice monkey only if you're route is known to be VFR and at no point are you more the 50 miles from a suitable alternate.


Seriously? It probably has to do with the angle of the control surface to the relative airflow that prevents ice from forming.... but doesn't the monkey sound so much better?
 
BobDDuck said:
No CRJ type but.....

Well, you know how everybody says you could teach a monkey to fly a CRJ? You could, if the plane didn't already have a monkey working on it. Most CRJs come with a factory installed Deice monkey. Right above the APU firebox there is a small box that is home to the monkey. There are ice detectors on the top of the tail and when they detect ice, the monkey comes out of his box (he wears a parachute just in case) and uses to rubber mallets to knock the ice of the surface. He then goes back into his home which is kept warm by the APU and is linked to the packs for pressurization. As far as I know you can MEL the deice monkey only if you're route is known to be VFR and at no point are you more the 50 miles from a suitable alternate.
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I call BS, I have never noticed a monkey house in the aft equip. bay.
 
When I was instructing on the seminole I used to teach students about the deice monkey (lived up on front by the heater, came out on a spring and knocked the ice off, gave you a thumbs up and wen tback into his home). I stopped after a DPE called me into an oral and asked the student to tell him about deice and anti ice on the seminole again. I didn't expect anybody to take the monkey seriously. Brian, it may not be installed on your airplanes. It might get too cold on the ramp overnight at some of the outstations for the monkey.
 
BobDDuck said:
No CRJ type but.....

Well, you know how everybody says you could teach a monkey to fly a CRJ? You could, if the plane didn't already have a monkey working on it. Most CRJs come with a factory installed Deice monkey. Right above the APU firebox there is a small box that is home to the monkey. There are ice detectors on the top of the tail and when they detect ice, the monkey comes out of his box (he wears a parachute just in case) and uses to rubber mallets to knock the ice of the surface. He then goes back into his home which is kept warm by the APU and is linked to the packs for pressurization. As far as I know you can MEL the deice monkey only if you're route is known to be VFR and at no point are you more the 50 miles from a suitable alternate.


Seriously? It probably has to do with the angle of the control surface to the relative airflow that prevents ice from forming.... but doesn't the monkey sound so much better?
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The monkeys from the CRJ get demoted to trunk monkeys when they get too old.
 
BobDDuck said:
Brian, it may not be installed on your airplanes. It might get too cold on the ramp overnight at some of the outstations for the monkey.
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well, that makes sense. hhmmm.....i wonder if the MEM based planes have them.
 
Regional Monkeys

Are you talking about the same monkeys that are also used as bathroom monkeys to clean showers and tubs?

Actually, most of the monkeys end up losing some hearing and drying out after a while at altitude. When they reach TBO (50+ years), Comair saves a nickel and hires them on as FA's (new B-scale), where they quickly lose that lean, hard-working primate physique on a diet of granola bars and cheese crackers.
 
Philip said:
I seem to remember from a systems class I took that the CRJ doesn't have any anti or de-ice on the tail. 2 things, did I misunderstand? Second, why doesn't it?
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1) You did not misunderstand. No anti/de-ice on the tail.

2) We were told "it doesn't need it and I've never heard of anybody having any problems" - so as to the WHY, you got me. :-)
 
CFIse said:
1) You did not misunderstand. No anti/de-ice on the tail.

2) We were told "it doesn't need it and I've never heard of anybody having any problems" - so as to the WHY, you got me. :-)
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dammit.

that's the same thing they told us in class. There MUST be an explanation.
 
mtsu_av8er said:
It's the same reason cars don't have windows at the bottom.

There's just no need . . .
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Ok, but why is there no need?
a C-414, a cheyane, a king air, they all must NEED ice protection on the tail, there must be an aerodynamic explanation behind it.
 
Usually thin "cruciform" tails gain the most ice, like on a Jetstream 32.

But the explanation is "aerodynamics"!

Maybe you should send Aero_Engineer a shout-out!
 
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