We apply Newton’s second law to calculate the weight (force) that corresponds to the known mass and acceleration. The weight of any object is equal to its mass times the local value of gravitational acceleration. For further queries:
Pound mass to pound force conversion. Read More »
Probelm Statement: Compressed air at 40 ∘C and 145 kPa from a large tank is discharged to ambient atmosphere at 101 kPa, through a convergent nozzle of 10 cm2 exit area,Calculate the mass flow rate through the nozzle when the ambient atmosphere is at (a) 101 kPa, (b) 50 kPa, and (c) 30 kPa. Equations
pressure ratio, mach number, velocity,density,speed of sound,mach number Read More »
Mass of a substance can be calculated with a simple arithmetic operation. The relation between mass, density and volume can be put to use for the same. Density is directly proportional to mass and inversely proportional to volume. Note: Density: Kg/m^3 Mass : Kg Volume : m^3 For further queries:
Mass Calculations Read More »
Wind turbines can be a great addition to a sustainable lifestyle. Although installation is expensive, they reduce the overall electricity bill. Wind mills are installed in windy areas like coasts, so that they engage and rotate the wings of the wind turbine. This rotating mechanical energy is converted to electrical energy, which is used in
Electric Power generated and it’s monetary value. Read More »
Problem Statement:Helium gas at 250 kPa and 100 ∘C flows through a rectangular duct of cross-section 40 cm × 50 cm, with a velocity of 500 m s−1.Determine the Mach number, stagnation temperature, stagnation pressure, and the mass flow rate. Assume helium to be an ideal gas. Equation 1: Speed Of Sound. Equation 2:Isentropic Relations
speed of sound,isentropic Relation, mach number,mass flow rate Read More »
Problem Statement:An aluminum pitot probe is placed in a supersonic air stream of temperature 30 ∘C. If the melting temperature of aluminum is about 660 ∘C, determine the flow velocity at which the probe will begin to melt. Assume air to be an ideal gas. Equation 1:speed of sound Equation 2:isentropic realtion Equation 3:energy Equation
speed of sound, isentropic realtion, energy Equation, velocity, temperature Read More »
The thrust developed by a propeller is the force it generates to propel the aircraft forward. It depends on the mass of air being accelerated by the propeller and the difference in velocity of the air before and after it passes through the propeller. The formula for thrust is: T=mË™(V∞−V)T = \dot{m} (V_\infty –
Find the thrust developed by a propeller Read More »
