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The instantaneous thrust-to-weight ratio of a vehicle varies continually during operation due to progressive consumption of fuel or propellant and in some cases a gravity gradient. The thrust-to-weight ratio based on initial thrust and weight is often published and used as a figure of merit for quantitative comparison of a vehicle's initial ...
The fuel consumption per mile or per kilometre is a more appropriate comparison for aircraft that travel at very different speeds. [citation needed] There also exists power-specific fuel consumption, which equals the thrust-specific fuel consumption divided by speed. It can have units of pounds per hour per horsepower.
An important driver of energy consumption of cars per passenger is the occupancy rate of the vehicle. Although the consumption per unit distance per vehicle increases with increasing number of passengers, this increase is slight compared to the reduction in consumption per unit distance per passenger.
For long-haul flights, the airplane needs to carry additional fuel, leading to higher fuel consumption. Above a certain distance it becomes more fuel-efficient to make a halfway stop to refuel, despite the energy losses in descent and climb. For example, a Boeing 777-300 reaches that point at 3,000 nautical miles (5,600 km).
On 24 October 2017, a 99.8% dispatch reliability was attained and Pratt remained on track to deliver 350 to 400 engines in 2017, as 254 have been delivered including 120 in the third quarter, but 12–15% were diverted for spares as the carbon air seal and combustor liners were wearing out quickly, requiring engine removals to change the part. [31]
Baah says lifting weights boosts energy by improving cellular efficiency, hormonal balance, and mental health. He pointed to a 2021 study that found resistance training stimulates the growth of ...
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