X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f996b,86862ec290c820b0 X-Google-Attributes: gidf996b,public X-Google-ArrivalTime: 2001-05-22 17:00:34 PST Path: archiver1.google.com!newsfeed.google.com!newsfeed.stanford.edu!bloom-beacon.mit.edu!howland.erols.net!portc.blue.aol.com.MISMATCH!portc03.blue.aol.com!uunet!dca.uu.net!falcon.america.net!eagle.america.net.POSTED!not-for-mail Message-ID: <3B0AFD4C.88D54075@gtcom.net> From: Krogg Reply-To: krogg.no.to.spam@gtcom.net X-Mailer: Mozilla 4.75 [en] (Win98; U) X-Accept-Language: en,en-US,en-GB,ja,af MIME-Version: 1.0 Newsgroups: alt.ascii-art Subject: Re: (pics) How to build a rocket References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 264 Date: Tue, 22 May 2001 19:59:08 -0400 NNTP-Posting-Host: 12.35.154.88 X-Trace: eagle.america.net 990576032 12.35.154.88 (Tue, 22 May 2001 20:00:32 EDT) NNTP-Posting-Date: Tue, 22 May 2001 20:00:32 EDT Organization: 24hoursupport.com Xref: archiver1.google.com alt.ascii-art:5790 David Palmer wrote: > > Introduction > ============ > > The way this works is very simple (just like a toy pop gun or > pneumatic spud gun) the bottle fills with air and the air begins to > compress and it builds up pressure. This pressure eventually gets > strong enough to blow out the the stopper, but since the stopper is on > the ground it pushes the bottle up into the air. > > /\ > / \ > / \ > /______\ > | | > | | > | | > | | > | | > | | > /| || |\ > / | || | \ > / | || | \ > /___| || |___\ > | | > \ / > || || > > I built this with my kids last weekend. It went higher than our house. > > Materials Needed > ================ > > . Empty plastic fizzy drink bottle (2 litre) > . One cork or rubber stopper (with hole through) > . Car tyre foot pump > . Adaptor for inflating footballs > . Pole or bamboo cane > . card or plastic tube > . Adhesive tape > . Card or plastic to make cone and fins/wings (optional) > > SAFETY NOTE > =========== > Only use a plastic fizzy drink bottle because these are designed to > withstand internal pressure. > > You will probably get wet. > > How to make it > ============== > > -= STEP 1 =- > > Push the pole into the ground and check that the tube slides easily > the full length. > > || > ||<---------- pole > || > || > || > | | > | | > | |<--------- tube > | | > | | > |__| > || > || > || > || > || > || > _______________||______________________ > > -= STEP 2 =- > > Tape the tube to the the bottle. > > ____ > || || > / \ > __| | > | | | > | | | > |__|________| > |___________| > | | | > |__| | > | | > | | > | | > | | > \ / > `-..-' > > -= STEP 3 =- > > Take the cork or stopper (should fit tightly in the bottle) and push > the adaptor into the hole. This should be a tight fit. You could use > vasoline to help make a good seal. > > ________ > | | | | > | | | | > | |||| | > | |||| | <----- stopper > | |||| | > | |||| | > |__||||__| > || > / \ > | | <------- adaptor > |____| > > -= STEP 4 =- > > You can attach a nose cone and fins/wings to the bottle at this > stage although the rocket will fly without them. > > /\ > / \ > / \ > /______\ > __| | > | | | > | | | > |__|________| > |___________| > | | | > |_/| || |\ > / | || | \ > / | || | \ > /___| || |___\ > | | > \ / > ||__|| > > -= STEP 5 =- > > Fill bottle 1/4 of the way with water. > Firmly push in stopper (with adapter fitted). > > /\ > / \ > / \ > /______\ > __| | > | | | > | | | > |__|________| > |___________| > | | | > |_/| || |\ > / | || | \ > / | || | \ > /___|:::||:::|___\ > |::::::::| > \::::::/ > ||__|| > || > > -= STEP 6 =- > > Slide bottle onto pole. > > || /\ > || / \ > || / \ > || /______\ > ||| | > | | | > | | | > |__|________| > |___________| > | | | > |__| || |\ > ||| || | \ > /||| || | \ > /_|||...||...|___\ > |||::::::::| > || \::::::/ > || ||__|| > _______________||____||________________ > > -= STEP 7 =- > > Slightly raise the rocket and connect the foot pump. > Start pumping. > (may take 2-5 min. to until the pressure forces out the cork) > > /\ > / \ > || / \ > || /______\ > ||| | > | | | > | | | > |__|________| > |___________| > | | | > |__| || |\ > ||| || | \ > /||| || | \ > /_|||...||...|___\ > |||::::::::| > || \::::::/ > || ||__|| > || || > || \\_______________ > _______________||______`--------------- > > Have fun. We used to make them like that but a little different. We would use a piece of PVC pipe that was the same diameter as the hole of the bottle...for some reason they fit exactly perfect,and it wont even leak. __ .-" "-. | | | | | | |________| |________| | | /| |\ / | __ | \ / | | | | \ /___|..| |..|___\ |::;::;::| ____ \:;::;:/ ;'-----| |------- `-"""""| |_||__||_ | | | |_.___.__.______ ____________|____|__`.__||___|__|____|_)=== [________________________________________] you would use an elbow and an end cap to seal off the end attached to the board.You can drill a hole in the endcap and put in a valve stem.There a several ways of making latches that will hold onto the bottle while you build up pressure and let go of it when you are ready to launch.Sometimes you can get them to go 200 to 300 feet high. Try seeing how high you can get an egg to go,and come back without cracking it. -- |"""""<`.THE PRINCE ,'>"""""""""""""""""""""""""""""""""""| | `.`/""""""\,',' my sig is too big, | |SEE HIS ( / \ \' SEE HIS but its really cool. | | FACE \/<> <>\/ SMILE | | / W \ Visit my ascii art site: | | ,'\_|||||_/`. http://www.gtcom.net/~krogg/ascii/ | | ,',' ||| `.`. krogg.no.to.spam@gtcom.net | |____<,' TIME TO DIE `.>____Remove no.to.spam to reply____|