Great exciting to get your answers
Hi All,
It is great to have talking to well experienced like you guys. I'm clear now, That it is an illusion seeing an aircraft stand still airborne.
One more theoritical view.
Can a propeller generate such a volume of airflow on the wings so that the lift can be created ( Please treat this as theoritical or ideal situation ).
The propeller that can distribute the airflow through the wings.
Given these situation a boeing 737 can be airborne without moving forward( 0 or negative ground speed and the headon wind is not favourable ).
Well does passenger or cargo airfcrafts possess such theoritical capability but may be becouse of the safety the manufacturer suggest you the other way.
Thanks for all your response