The poncelet (symbol p) is an obsolete unit of power, once used in France and replaced by cheval-vapeur (ch, metric horsepower). The unit was named after Jean-Victor Poncelet.[1]

poncelet
Unit systemNon-SI metric unit
Unit ofPower
Symbolp
Named afterJean-Victor Poncelet
Definition1 p = 100 kgf⋅m/s
Conversions
1 p in ...... is equal to ...
   SI units   980.665 W

One poncelet is defined as the power required to raise a hundred-kilogram mass (quintal) at a velocity of one metre per second (100 kilogram-force·m/s).

1 p = 980.665 W = 4/3 ch ≈ 1.315 hp (imperial horsepower)

References

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  1. ^ François Cardarelli, Encyclopaedia of Scientific Units, Weights and Measures: Their Si Equivalences and Origins, Springer, 2003, ISBN 185233682X, page 527