Air Temperature Converison

Hey! So watching the module on air density, and I have a question on the equation if I want to use degrees celcius to rankine instead of fahrenheit to rankine.

The exmaple shows degrees rankine being worked out at 59 degrees fahrenheit, making 519 degrees rankine. What would the calculation be to convert from degrees celcius, and would this change the overall equation for air density? Would it just be easier to convert celcius to fahrenheit before working out air density?

Cheers!

Mitch

Is there any reason you can't just use Kelvin, and it's correction factor?

The UK's been metric, with SI units, for ~50 years, so using a fahrenheit based system seems rather daft?

If you really want to use Rankine, add 273.15 (IIRC) to the temperature in celcius/centigrade, and then multiply by 9 and divide by 5.