28 volt pitot heat

rip

It might be possible?

Use an inverter and diode rectifirer of the resulting A/C or just run
on A/C.

One of our retired electrical engineers could probably come op with a
set of plans to build or how to modify a commercial Inverter
(12DC/110VAC) you can buy anyplace.

A basic question. How many homebuilts are IFR certified and are flown
in icing conditions and need a heated pitot tube?

Big John (I been lurking troops )


On Fri, 26 Mar 2004 23:57:43 GMT, rip
wrote:

No. A 28 volt pitot on a 14 volt system will only develop 1/4 of the
design wattage. I feel your pain; the price of pitot tubes these days is
absolutely, downright obscene.

Rip

B2431 wrote:
Will running a 28 volt pitot tube heat on 12 volts heat it enough to use? I
keep seeing 28 volt pitot tubes on e-bay and was wondering if they would do the
job.

Dan, U.S. Air Force, retired

On Sat, 27 Mar 2004 04:19:00 -0600, Big John
wrote:
:
:A basic question. How many homebuilts are IFR certified and are flown
:in icing conditions and need a heated pitot tube?


A significant number are IFR certified. None (or nearly none) are
flown in *known* icing - it's when happens despite your best efforts
that you don't want it to kill you.

I don't think I'm going to put pitot heat on mine, despite a fully
redundant Uuber IFR panel from the 6th circle of Hell (2 of everything
except engine instruments). A while back I tried putting a post-it
note over my airspeed indicator, and found I could land just fine.
GPS gave me a general idea of airspeed, I knew what my approach looked
like and how much power I was carrying. If the nose started to bob, I
added a touch of power. I wouldn't do it in a conventional
configuration but in a canard it worked surprisingly well.