[Emyr]

What's the conversion between CI and litres?

 

[Emyr]

new guy smart comment - but it was good enough to put man on the moon and bring him back again!

The scientists used SI units but the vehicles were made by traditional US aero shops, using imperial units.

The guidance computer used "metric" SI units internally, but converted inputs from imperial and converted SI to imperial for displays.

See paragraph just after figure 4.
https://www.doneyles.com/LM/Tales.html

 

[Emyr]

Re: fissiks

So first i'm gonna convert some units; 1400 kg is about 3100 lbs, divide this Weight by gravity, g, to get mass, m; and 70 mph is a velocity, v, of about 103 ft/sec.

Now the kinetic energy of motion at 70 mph is (.5mv^2) = 510682 lb-ft

For a first order power estimate take the kinetic energy divided by your acceleration time, let's assume 0 to 70 in 13 seconds.

This gives a power of 39283 lb-ft/sec, a horse can pull 550 pounds over a distance of one foot in one second, so divide by 55

kinetic energy is measured in joules. lb-ft is a measure or torque, not energy.

Learn SI units, it makes the calculations a lot simpler.