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russouk2004

I know...im stupid but...

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I cant recall how mass is written...what unit is calculated ?...kilos pounds etc ?

EmptyMass=14000.00

also empty inertia...how do we asses a planes inertia ?

thnx

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Inertia is probably in kgm (or Nm?). It's sum of masses multiplied by distance to CG. Three values for all axis.

It determine force on steering plates needed to start turn or climb.

 

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Thanks...also

 

are these in Knots ? or KM\h ? or IAS ?

StallSpeed=59.01
CruiseSpeed=205.8
ClimbSpeed=200.1
CornerSpeed=192.9

MaxSpeedSL=269.1

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On 2/23/2020 at 3:22 PM, Crusader said:

mass = kilogram :smile:

inertia = wait for experts

To calculate inertia, find a ThirdWire aircraft with a similar configuration and mass, then copy the inertia values. :biggrin: [I know that sounds lame but I tried a simplified approach once and the results were off the charts.]

 

On 2/23/2020 at 4:30 PM, guuruu said:

Inertia is probably in kgm (or Nm?). It's sum of masses multiplied by distance to CG. Three values for all axis.

Just an observation but in the Hud De-Bug mode the Inertia values are shown in Slugs-Ft^2 [whatever that is :dntknw:]

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38 minutes ago, baffmeister said:

Slugs-Ft^2 [whatever that is :dntknw:]

https://en.wikipedia.org/wiki/Slug_(unit)

So probably the easiest way is calculate it in kg*m^2, then convert to slugs ;-)

But baffmeister's method is the best. Fast and simple. :drinks:

Edited by guuruu
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