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9. Contact - got a question about Power To Weight Ratio, or want to leave a comment then check out the sites contact page. Reputable companies have them and respond.
10. Payment - ready to pay for your Power To Weight Ratio, then use your credit card or PayPal! Be aware of companies that don't accept them, there may be genuine reasons but given the huge amount of choice you have when buying online there is no reason at all not to buy via credit card or PayPal.
Power-to-weight ratio (specific power) is a calculation commonly
applied to engines and other mobile power plants to enable the comparison of one unit (design) to another. Power-to-weight ratio is a measurement of actual performance of any engine (power plant).
The power-to-weight ratio (Specific Power) formula for an engine (power plant) is:
power (physics) generated by the engine divided by weight of the engine as follows:
\begin{matrix}\mbox{P-to-W}&= P/W \\\end{matrix}
English system
units of measure are usually
horsepower per
pound (mass) (
hp/lb)
Metric system
units of measure are usually horsepower per kilogram (
hp/kg)
The use of
watts, or kW (kilowatts), instead of horsepower is common (Conversion: 745.7 watts/hp).
Because this is a ratio, the denominator is always singular (1 lb or 1 kg) as in the following example:
250 hp (engine power)/1,000 lb (engine weight) = 0.25 hp/lb (turbocharged V-8 diesel engine) specific power
70,000 hp (turbine power)/700 lb (turbine weight) = 100 hp/lb (Space Shuttle) specific power
Note: When looking at power to weight ratio (specific power),
larger is better.
Weight-to-power ratio (power loading) is a calculation commonly applied to
aircraft, cars, and vehicles in general, to enable the comparison of one vehicle performance to another. Weight-to-Power ratio is a measurement of the acceleration capability (potential) of any land vehicle or climb performance of any aircraft or space vehicle).
The Weight-to-Power ratio (power loading) formula for a vehicle is:
weight of the vehicle divided by power generated by the engine as follows:
\begin{matrix}\mbox{W-to-P}&= W/P \\\end{matrix}
English system units of measure are usually
pound (mass)s per horsepower (
lb/hp)
Metric system
units of measure are usually kilograms per
horsepower (
kg/hp)
The use of
watts, or kW (kilowatts), instead of horsepower is common (Conversion: 745.7 watts/hp).
Because this is a ratio, the denominator is always singular (1 hp or 1 kW) as in the following example:
3,122 lb (automobile weight)/145 hp (V6 (cyl) engine power) = 21.5 lb/hp (2007 Chevy Malibu Is, 5 seats) Power Loading
2,450 lb (aircraft weight)/160 hp (H4 (cyl) engine power) = 15.3 lb/hp (9.25 kg/kW) (Cessna 172 airplane, 4 seats) Power Loading
Note: When looking at weight-to-power ratio (power loading),
smaller is better.
See also
External links
- Weight to Power ratio of current automobiles.
Power-to-weight ratio (specific power) is a calculation commonly
applied to engines and other mobile power plants to enable the comparison of one unit (design) to another. Power-to-weight ratio is a measurement of actual performance of any engine (power plant).
The power-to-weight ratio (Specific Power) formula for an engine (power plant) is:
power (physics) generated by the engine divided by
weight of the engine as follows:
\begin{matrix}\mbox{P-to-W}&= P/W \\\end{matrix}
English system units of measure are usually horsepower per
pound (mass) (
hp/lb)
Metric system units of measure are usually horsepower per kilogram (
hp/kg)
The use of watts, or kW (kilowatts), instead of horsepower is common (Conversion: 745.7 watts/hp).
Because this is a ratio, the denominator is always singular (1 lb or 1 kg) as in the following example:
250 hp (engine power)/1,000 lb (engine weight) = 0.25 hp/lb (turbocharged V-8 diesel engine) specific power
70,000 hp (turbine power)/700 lb (turbine weight) = 100 hp/lb (Space Shuttle) specific power
Note: When looking at power to weight ratio (specific power),
larger is better.
Weight-to-power ratio (power loading) is a calculation commonly applied to
aircraft, cars, and vehicles in general, to enable the comparison of one vehicle performance to another. Weight-to-Power ratio is a measurement of the acceleration capability (potential) of any land vehicle or climb performance of any aircraft or space vehicle).
The Weight-to-Power ratio (power loading) formula for a vehicle is:
weight of the vehicle divided by power generated by the engine as follows:
\begin{matrix}\mbox{W-to-P}&= W/P \\\end{matrix}
English system units of measure are usually
pound (mass)s per
horsepower (
lb/hp)
Metric system
units of measure are usually
kilograms per
horsepower (
kg/hp)
The use of watts, or kW (kilowatts), instead of horsepower is common (Conversion: 745.7 watts/hp).
Because this is a ratio, the denominator is always singular (1 hp or 1 kW) as in the following example:
3,122 lb (automobile weight)/145 hp (V6 (cyl) engine power) = 21.5 lb/hp (2007 Chevy Malibu Is, 5 seats) Power Loading
2,450 lb (aircraft weight)/160 hp (H4 (cyl) engine power) = 15.3 lb/hp (9.25 kg/kW) (Cessna 172 airplane, 4 seats) Power Loading
Note: When looking at weight-to-power ratio (
power loading),
smaller is better.
See also
External links
- Weight to Power ratio of current automobiles.
