Originally Posted by bearfoil
The far end of the discussion involves the tax on all movements, entropy.
Right, the thermal energy in the fuel ultimately ends up heating the atmosphere.
Originally Posted by bearfoil
where is the "lift" vector pushing down on the horizontal Stabilizer?
It is part of the resultant lift force generated by wing+fuselage+tail that balances the weight (and moments, but those include thrust and drag as well).
regards,
HN39