Procedure for calculating weight and balance

New_CFI writes:

as you burn fuel your CG changes. Your 'neutral trim' wont last. read
about the benifits of forward/aft CG's.

I did, but neither is clearly superior to the other, so why not just
stay neutral?

Now if your doing areobatics I believe the placement of the CG becomes even
more importent (all I have done is spins) and my guess is that a 'neutral
cg' is not the best place?

Maybe. The Baron and the 737 aren't suitable for aerobatics, though,
and I'm not a great fan of aerobatics myself (except perhaps to watch
from the grandstands).

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Mxsmanic wrote in
news
Thomas Borchert writes:

Why would "neutral trim" be important?

It allows for maximum control movement in both directions.

hehehe....are you trying to avoid a building? small controll movements
are key to a smooth flight.

For that matter, what would it be?

Neutral trim in cruise, usually.

Neutral trim in cruse is not neccisarly good. read about it.

What you get is a range of allowable CGs, which often depends on
total weight. This all has to do mostly with elevator authority. Trim
(as in the trim wheel) is not really important, trim is just a tool
to relieve the pilot.

Any trim adjustment has an effect on the remaining elevator authority
beyond the trimmed position.

again, how much elevator do you need? small controll inputs... save up
some money and go take a discovory flight at least. It will give you an
idea of the fine cotrol one needs...and perhaps answer questions like
this.

Once you've figured this out, ponder why an aircraft will be faster
or consume less fuel if the CG is as aft as possible.

I'm not worried about speed or fuel consumption. I'm not in a rush,
and I generally take off with full tanks, at least in the Baron.


ok, then drive. or if your just intrested in seeing the world from
above, fly a balloon.

New_CFI writes:

hehehe....are you trying to avoid a building? small controll movements
are key to a smooth flight.

No, but if I put in a lot of trim to stay level, and then I need more
control movement for an emergency, I might not have it. The trim can
create the false impression that there is full movement in both
directions.

Neutral trim in cruse is not neccisarly good. read about it.

I've read about advantages and disadvantages, but there doesn't seem
to be any great danger in neutral trim.

again, how much elevator do you need?

I don't know ... so I like to have as much as possible in both
directions.

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Mxsmanic wrote:

Relative to its default position.

Default position? You have absolutely no idea what trim
does in a real airplane. Only in a stupid flight sim.

F--

TxSrv writes:

Default position?

Yes.

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Mxsmanic wrote:

No, but if I put in a lot of trim to stay level, and then I need
more control movement for an emergency, I might not have it.

For real airplanes, FAR Parts 23 and 25 contain detailed
requirements to provide for "emergency" maneuvers at all
trim settings. If you have a problem here, it's solely MSFS.
The idea that you would be concerned about such an
emergency in a flight sim is really weird. Does MSFS really
consume your life like this? Jeesh.

F--

Mxsmanic wrote:
TxSrv writes:

Default position?

Yes.

What's the default position in my 1972 American AA-5
Traveler? No mention of it in the Pilot Operating Handbook.
If relevant to safety of flight, FAR Part 21 says the POH
must tell me so.

F--

TxSrv writes:

What's the default position in my 1972 American AA-5
Traveler? No mention of it in the Pilot Operating Handbook.

I know.

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Mxsmanic wrote:
TxSrv writes:

What's the default position in my 1972 American AA-5
Traveler? No mention of it in the Pilot Operating Handbook.

I know.

You know what? It's "default position," or that this odd
and irrelevant piece of information is not in the POH?

F--

"TxSrv" wrote in message
. ..

What's the default position in my 1972 American AA-5 Traveler? No mention
of it in the Pilot Operating Handbook. If relevant to safety of flight,
FAR Part 21 says the POH must tell me so.

F--

In MSFS, if the gamer does not enter inputs for trim and/or W&B the
aircraft data revert to defaults. No such thing exists for our real
aircraft. Likewise, DA defaults to runway altitude regardless of local
meteorology. These are some of the errors in the game.

MSFS was originally developed by a company called subLOGIC and is
supported today by Microsoft Game Studios which develops and publishes video
games for Windows-based PCs and the Xbox and Xbox 360 video game consoles.
To some naive people the word simulator elevates the game's status far
beyond its reality -- it is a game, nothing more.
In the US, the FAA does not recognize any time spent on the game as
valid time for anything.
I loaded MSFS onto my computer and spent several hours with it using
yoke, rudder pedals, and throttle controls. I did a serious comparison of it
to the Cessna 172SP that I was flying at the time and as a legitimate
simulation I rated it poorly.
On the other hand, as a game for which it was intended, it was mildly
enjoyable. I still have it on my computer although the only use it gets is
when my grandson comes for a visit. Since he has many hours in the right
seat of 172s with both his dad and me, including lots of stick time, I once
asked him what he thought about flying the 172 in MSFS. Using the cliche --
out of the mouth of babes -- came the quote: "It's bogus."

So, don't look for any defaults in your airplane's POH it is a term used
in games, not real life.