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Without the benefit of staging, SSTO designs are typically designed for mass fractions around 0.9. Staging increases the payload fraction, which is one of the reasons SSTOs appear difficult to build. For example, the complete Space Shuttle system has: [1] fueled weight at liftoff: 1,708,500 kg; dry weight at liftoff: 342,100 kg
For this reason, the useful load fraction calculates a similar number, but it is based on the combined weight of the payload and fuel together in relation to the total weight. Propeller-driven airliners had useful load fractions on the order of 25–35%.
With a fuel fraction of nearly 85%, the GlobalFlyer could carry 5 times its weight in fuel.. In aerospace engineering, an aircraft's fuel fraction, fuel weight fraction, [1] or a spacecraft's propellant fraction, is the weight of the fuel or propellant divided by the gross take-off weight of the craft (including propellant): [2]
This equation can be rewritten in the following equivalent form: = / The fraction on the left-hand side of this equation is the rocket's mass ratio by definition. This equation indicates that a Δv of n {\displaystyle n} times the exhaust velocity requires a mass ratio of e n {\displaystyle e^{n}} .
Mass fraction can also be expressed, with a denominator of 100, as percentage by mass (in commercial contexts often called percentage by weight, abbreviated wt.% or % w/w; see mass versus weight). It is one way of expressing the composition of a mixture in a dimensionless size ; mole fraction (percentage by moles , mol%) and volume fraction ...
Kat Dennings is reminiscing about her time as a “Hot Child in the City” — and the perks that came with it.. The 2 Broke Girls star joined the hosts of The View on Tuesday, Jan. 7, to talk ...
The mass fraction of element B at the liquidus is given by w B l (represented as w l in this diagram) and the mass fraction of element B at the solidus is given by w B s (represented as w s in this diagram). The mass fraction of solid and liquid can then be calculated using the following lever rule equations: [1]
Democratic Sen. John Fetterman has accepted President-elect Donald Trump's invitation to visit him at his Mar-a-Lago club in Florida, the senator said in a statement provided to ABC News.