measurement units

Post by **da-water** » Thu May 01, 2008 5:31 am

what's your favourite measurement unit??

i want to know if you prefer cm(centimetres) or inches..

Post by **Team Seneca** » Thu May 01, 2008 8:59 am

I like mm and ml for rocket size and capacity but I like feet for altitude!

Post by **da-water** » Sat May 03, 2008 4:33 am

do you all agree??
i'm going to upload a Cp Software and i have to be sure about the measurement unit...

for rocket size...

Post by **ATK** » Sat May 03, 2008 10:24 am

da-water wrote:do you all agree??
i'm going to upload a Cp Software and i have to be sure about the measurement unit...

for rocket size...

I prefer metric units but is is easy to convert if not.

Post by **Drag_Racer408a** » Sat May 03, 2008 7:11 pm

I like inches and liters. I can see if you don't want to use inches but i think liters would be better than ML. It is easier to acidetally put to man zeros on 3400 ml than just saying 3.4 liters.

But its your deal so do what you want. Maybe make 2

Post by **Brian** » Sun May 04, 2008 5:48 am

yeh, im metric. its also good because 1kg = 1L

Post by **WRA2** » Sun May 04, 2008 10:01 am

Most people in the sport tend to use metric measurements for the rocket volume and english measurements for the altitude. It doesn't really matter as everyone here can convert if needed.

Post by **WRA2** » Sun May 04, 2008 10:05 am

ATK wrote:I prefer metric units but is is easy to convert if not.

Welcome to the forum!!!

Post by **da-water** » Mon May 05, 2008 10:40 am

the software is about the cp... it doesn't use litres or ml or something else.. it doesn't use capacity unit....

i will use cm because , if i used inches, i shuold change totally the software..

Post by **Tim Chen** » Mon May 05, 2008 12:18 pm

da-water wrote:the software is about the cp... it doesn't use litres or ml or something else.. it doesn't use capacity unit....

i will use cm because , if i used inches, i shuold change totally the software..

I am excited to try out the software. I'll convert to meters or inches or yards or miles on my own if I need to. I appreciate the work that's getting put into the program and can't wait to use it. Thank you!

Post by **da-water** » Mon May 05, 2008 4:10 pm

u r welcome

i' m sure this software is so easy that every body can use it...
you can't use this software for multi stage rockets because it isn't very sofisticated but, for single stage rockets, i think it's quite good...

Post by **Tim Chen** » Mon May 05, 2008 4:22 pm

da-water wrote:u r welcome
i' m sure this software is so easy that every body can use it...
you can't use this software for multi stage rockets because it isn't very sofisticated but, for single stage rockets, i think it's quite good...

Would it be possible to compute the CP of a multi-stage rocket by computing the CP of each stage averaged with the overall length of the complete rocket? It seems like this would be an esy way to determine it.

Post by **da-water** » Fri May 09, 2008 12:43 pm

i don't know if it would be possible.. but the first stage usually doesn't go very high.. 30/40m... i saw it in Air Command videos.. so it doesn't have to be very accurate...

perhaps it does.. i will ask in my forum

Post by **Tim Chen** » Fri May 09, 2008 1:46 pm

da-water wrote:i don't know if it would be possible.. but the first stage usually doesn't go very high.. 30/40m... i saw it in Air Command videos.. so it doesn't have to be very accurate...

perhaps it does.. i will ask in my forum

I think if the first stage used a smaller nozzle then it would burn longer and go a lot higher but it would lift off more slowly and then you would need to know more about the stability of the rocket.

Post by **da-water** » Mon May 12, 2008 4:35 pm

yes, but the first stage could not be able to go with a too small nozzle.. it must be very "strong" to pull up the second stage...

as you can see in air command' s multistage, they always use standard gardena nozzles (9mm) and even bigger in rockets with small lateral boosters (13mm)..

so it would burn more but it could not be able to pull up the second stage... sorry for repetition :P

Water Rocket Forum

measurement units

measurement units

Re: measurement units