METHOD OF DETERMINING DYNAMIC WORK OF BODY DISPLACEMENT BY VARIABLE FORCE IN AIR Russian patent published in 2013 - IPC E21F1/00 

FIELD: mining.

SUBSTANCE: body is arranged in heading entry to measure its weight. Stationary air medium is arranged in heading to make said body moving in air medium. Body motion velocity and medium velocity of displacement relative to moving body are measured. Specific density of air flow rate and body motion aerodynamic force in air are measured. Preset force and period of its action are measured to define preset force pulse and to measure preset velocity of medium. Then, maximum deviations from preset values of force pulse and medium velocity are defined. In case there deviations, their appropriate magnitudes are set at entry. Medium force pulse and velocity are varied. Force pulses and specific densities of air flow rate corresponding thereto are measured at heading entry to define force variations conditions and initial dynamic work of the body. Dynamic work of body displacement in air is defined at heading entry at variable pulse, specific density of air flow rate and various variation conditions by enclosed mathematical formulae.

EFFECT: higher accuracy and validity.

1 dwg