Weight/balance question

Is a statement such as the following acceptable for weight and balance
calculations for flying?

"As long as the maximum baggage weight of XX lbs and gross weight of
xxxx lbs is not exceeded, the aircraft will be in balance"

On 8 Jun 2004 06:16:09 -0700, (Bob Martin) wrote:

Is a statement such as the following acceptable for weight and balance
calculations for flying?

"As long as the maximum baggage weight of XX lbs and gross weight of
xxxx lbs is not exceeded, the aircraft will be in balance"

IIRC, that's exactly what my Stinson 108-3 manual said....

Ron Wanttaja

Ron Wanttaja wrote in
:

On 8 Jun 2004 06:16:09 -0700, (Bob Martin) wrote:

Is a statement such as the following acceptable for weight and balance
calculations for flying?

"As long as the maximum baggage weight of XX lbs and gross weight of
xxxx lbs is not exceeded, the aircraft will be in balance"

Taylorcraft too.

- Carl -

Aeronca too, but don't use that on all aircrafts! :-)

Jan Carlsson
www.jcpropellerdesign.com

"Carl Ellis" skrev i meddelandet
. 97.136...
Ron Wanttaja wrote in
:

On 8 Jun 2004 06:16:09 -0700, (Bob Martin) wrote:

Is a statement such as the following acceptable for weight and balance
calculations for flying?

"As long as the maximum baggage weight of XX lbs and gross weight of
xxxx lbs is not exceeded, the aircraft will be in balance"

Taylorcraft too.

- Carl -

Carl Ellis wrote in message .97.136...
Ron Wanttaja wrote in
:

On 8 Jun 2004 06:16:09 -0700, (Bob Martin) wrote:

Is a statement such as the following acceptable for weight and balance
calculations for flying?

"As long as the maximum baggage weight of XX lbs and gross weight of
xxxx lbs is not exceeded, the aircraft will be in balance"

Taylorcraft too.

- Carl -

With the Cessna 150/152s I flew in training, W/B was a mere formality
with normal-sized people in the seats no baggage, regardless of fuel
level.

In article ,
(Bob Martin) wrote:

Is a statement such as the following acceptable for weight and balance
calculations for flying?

"As long as the maximum baggage weight of XX lbs and gross weight of
xxxx lbs is not exceeded, the aircraft will be in balance"

NO! You need the CG of the airplane to be within a certain range of
distances of Mean Aerodynamic Chord. The above statement gives no
quantitave information as to where that CG is.

On Tue, 08 Jun 2004 21:16:29 GMT, Orval Fairbairn
wrote:

In article ,
(Bob Martin) wrote:

Is a statement such as the following acceptable for weight and balance
calculations for flying?

"As long as the maximum baggage weight of XX lbs and gross weight of
xxxx lbs is not exceeded, the aircraft will be in balance"

NO! You need the CG of the airplane to be within a certain range of
distances of Mean Aerodynamic Chord. The above statement gives no
quantitave information as to where that CG is.

But if it's impossible for a given airplane to be outside its CG range as
long as placarded limits are obeyed, seems to me that verifying that the
limits are not exceeded would be sufficient for the pilot to be assured
that CG is within the allowed range. There have been thousands of planes
sold where the CG check is done on that basis.

Ron Wanttaja

Hmmm... would I be correct in assuming that on aircraft placarded this way, it
would be physically improbable to load baggage in an area of the airframe that
would cause an out-of-limit CG issue if the weight limit was not exceeded?

Just wondering... CG is a VERY big issue with pioneer-era airframes, and
simply leaning back could/did cause stalls 100 years ago.

Harry