Bypass ratio the velocity of a very large volume and consequently mass of air produces a very large change in momentum and thrust: thrust is the engine's mass flow (the amount of air flowing through the engine) multiplied by the difference between the inlet and exhaust velocities in—a linear relationship—but the kinetic energy of the exhaust is the mass flow multiplied by one-half the square of the difference in velocities. A low disc loading (thrust per disc area) increases the aircraft's energy efficiency, and this reduces the fuel use. The Rolls–Royce Conway turbofan engine, developed in the early 1950s, was an early
Mercy Multiplied an audio bible featuring the voices of Christian celebrities and testimonies of Mercy Multiplied graduates. In spite of Mercy Multiplied principles of not accepting government funding and providing their program free of charge to their clients, Mercy Ministries Australia was investigated by the Australian Competition & Consumer Commission (ACCC) and found to be in breach of the Trade Practices Act 1997 and guilty of "false and misleading advertising" of their services, including advertising that their program was free of charge when their clients were in fact required to sign over their government welfare benefits. The former directors were required to