There are many websites devoted to water rockets, some simple ones and some very sophisticated ones. Some people are very serious about their rockets - the world's record height for a water rocket is over 2000 feet! Some sites sell launch pads, and some explore the science behind the rockets. Here are some of my favorite water rocket links:
more water rocket links here:
http://polyplex.org/rockets/links.html
Step by step to make water rocket
http://www.instructables.com/
tapi kena search kat ruangan search- type water rocket, bottle rocket dll.
Air Command Water Rockets
http://home.people.net.au/%7Eaircommand/index.htm
Tim Sumrall (USA) has a well-organized set of water-rocket links.
http://sumrallworks.com/rockets/main.php3
Dean's Benchtop water rocket
http://www.et.byu.edu
Ulrich Hornstein (Germany)
http://waterrocket.uh-lab.de/
Bristol Water Rockets
http://www.orgsites.com/va/bristolwaterrockets/index.html
Air Command Water Rockets
http://home.people.net.au/~aircommand/index.htm
Peter Grosse's Water Rocket Site:
http://ourworld.compuserve.com/homepages/pagrosse/h2oRocketIndex.htm
Gary Ensmenger's Water Rocket Site:
http://www.h2orocket.com
Jim Gallant's Water Rocket Site:
http://www.outsideconnection.com/rockets
4-H Club activity sponsored by Ohio State University:
http://www.ag.ohio-state.edu/~rockets
Leeds University Water Rocket Page:
http://www.ast.leeds.ac.uk/~knapp/rockets
Mike Passerotti's Rocket Pop! Site:
http://www.waterrocketpop.com
http://mpassero.tripod.com/rocket
Water Rocket Car:
http://www.outsideconnection.com/rockets/rocketcar.htm
Ahad, 28 Jun 2009
Maklumat...idea....macam-macam
Banyak yang boleh dipelajari dan ada banyak gambar2 berkaitan roket air...
lawati alamat dibawah:
http://groups.yahoo.com/group/water-rockets/photos/album/0/list
selamat mencuba.....
lawati alamat dibawah:
http://groups.yahoo.com/group/water-rockets/photos/album/0/list
selamat mencuba.....
Sabtu, 27 Jun 2009
Gambar -gambar semasa pertandingan peringkat Daerah
Dah siap 'upload' .......Banyak bentuk-bentuk roket yang menarik telah dicipta oleh pelajar-pelajar di daerah segamat, Tahniah...... jumpa lagi ditahun hadapan.
http://picasaweb.google.com/roketh2o/GmbrFSTRoketH2o2009#klik di sini
http://picasaweb.google.com/roketh2o/FST2009#klik di sini
sebahagian gambar roket dan pertandingan lain sempena FST boleh dilihat di sini :
http://picasaweb.google.com/zainalmzabir/FestivalSainsDaerahSegamat2009#klik di sini
http://picasaweb.google.com/roketh2o/GmbrFSTRoketH2o2009#klik di sini
http://picasaweb.google.com/roketh2o/FST2009#klik di sini
sebahagian gambar roket dan pertandingan lain sempena FST boleh dilihat di sini :
http://picasaweb.google.com/zainalmzabir/FestivalSainsDaerahSegamat2009#klik di sini
SMK Maokil....
Alhamdulillah, walaupun SMK Maokil tidak berjaya untuk mengekalkan status Johan keseluruhan Teknologi Pelancaran Roket pada tahun ini sebagaimana tahun yang lepas tetapi pelajar-pelajar masih lagi boleh menunjukkan kejaguhan mereka semasa pertandingan peringkat negeri nanti. Pada tahun ini 2 pasukan terbaik akan mewakili daerah segamat ke Pertandingan peringkat negeri yang akan berlangsung di Daerah Pasir Gudang pada 7-9 Julai 2009. Sekolah yang dimaksudkan adalah SMK Dato Bentara Dalam dan SMK Maokil. Syabas! peserta-peserta maokil tunjukkan kebolehan anda di peringkat negeri nanti.
Keputusan Pertandingan Teknologi Pelancaran Roket Air Peringkat Daerah Segamat 2009
Alhamdulillah SMK Munshi Ibrahim, Labis sebagai penganjur dan SMK Maokil menyediakan tempat pertandingan telah berjaya mengelolakan FST peringkat Daerah Segamat dengan jayanya bagi acara Teknologi Pelancaran Roket.
Berikut adalah Keputusan Pertandingan bagi tahun 2009
Kategori Roket Sasaran
Tempat Pertama : SMK Dato Bentara Dalam (Sasaran bulatan ke 2)
Tempat ke Dua : SMK Maokil (Sasaran bulatan ke 3)
Tempat ke Tiga : SMK Tenang Stesyen (Sasaran bulatan ke 3)
Kategori Roket Paracut
Tempat Pertama : SM Tinggi Segamat (2 minit 15 saat)
Tempat ke Dua : SMK Dato Bentara Dalam ( I minit 20 saat)
Tempat Ke Tiga : SMK Maokil (50 saat)
Johan keseluruhan teknologi Pelancaran Roket 2009 : SMK Dato Bentara Dalam
Naib Johan : SMK Maokil
Tahniah diucapkan kepada guru-guru dan pelajar-pelajar yang telah berjaya
Berikut adalah Keputusan Pertandingan bagi tahun 2009
Kategori Roket Sasaran
Tempat Pertama : SMK Dato Bentara Dalam (Sasaran bulatan ke 2)
Tempat ke Dua : SMK Maokil (Sasaran bulatan ke 3)
Tempat ke Tiga : SMK Tenang Stesyen (Sasaran bulatan ke 3)
Kategori Roket Paracut
Tempat Pertama : SM Tinggi Segamat (2 minit 15 saat)
Tempat ke Dua : SMK Dato Bentara Dalam ( I minit 20 saat)
Tempat Ke Tiga : SMK Maokil (50 saat)
Johan keseluruhan teknologi Pelancaran Roket 2009 : SMK Dato Bentara Dalam
Naib Johan : SMK Maokil
Tahniah diucapkan kepada guru-guru dan pelajar-pelajar yang telah berjaya
Isnin, 22 Jun 2009
Pertandingan Peringkat Sekolah
Kelab roket dan rekacipta SMK Maokil telah menganjurkan pertandingan dalaman bagi kategori Roket sasaran pada hari Sabtu 20/6/09 yang lepas. Tahniah diucapkan kepada pemenang-pemenang yang berjaya melancarkan roket masing-masing. Kesungguhan peserta-peserta membuat roket dengan rekabentuk yang pelbagai dan berlatih selama seminggu amat saya banggakan, walaubagaimana pun pada hari pertandingan tersebut tiada satu pun roket yang berjaya memasuki bulatan 'red bull eyes'. Cuba lagi pada pertandingan dalaman pada tahun hadapan.
gambar suasana pertandingan:
http://picasaweb.google.com/roketh2o/PertandinganRoketDalaman#
gambar suasana pertandingan:
http://picasaweb.google.com/roketh2o/PertandinganRoketDalaman#
Pertandingan
Kepada peserta-peserta teknologi pelancaran roket daerah segamat yang akan menyertai pertandingan pada 24/6/2009 bertempat di SMK Maokil diucapkan selamat maju jaya. Tunjukkan kreativiti anda dalam membina roket sasaran dan roket paracut. Insyallah saya akan masukkan gambar-gambar yang menarik untuk tatapan peminat-peminat roket air semua semasa pertandingan teknologi pelancaran roket itu berlangsung.
Kepada bakal-bakal angkasawan (peserta-peserta SMK Maokil), doa saya agar semuannya berjalan lancar semasa hari pertandingan dan berjaya ke pertandingan peringkat negeri nanti. Insyallah......amin.
Kepada bakal-bakal angkasawan (peserta-peserta SMK Maokil), doa saya agar semuannya berjalan lancar semasa hari pertandingan dan berjaya ke pertandingan peringkat negeri nanti. Insyallah......amin.
Khamis, 18 Jun 2009
Sabtu, 13 Jun 2009
Basic Principles of Water Rocket
The meaning of "rocket" is the propelling engine - gasoline engines or jet engines - pushed by spouting hot gases.
Water Rocket use water and air to fly. The principle of Water Rocket propulsion is that, the compressed air spout water and the power of spouted water propel the rocket. Therefore the rocket that is filled only water cannot be propelled because the water cannot be compressed.
Likewise the following picture, fill the PET bottle with some water and pump the air into the bottle, then the air in the bottle will be compressed and the water molecules will be pressured, densified and trapped so it pressures both the inside of PET bottle and surface of water.
When the bottle cap opened water spouted out of bottle and it forces the PET bottle to fly. Due to it's great pressure the bottle propelled with great power. Obeying Newton's the third law of motion, "action and reaction" - every object has same reaction force against action - PET bottle propelled rapidly to the opposite direction of spouting water.
However one thing you have to be careful is that, without water or with lack of water, the air will leak, and the other hand with too much of water the bottle cannot fly far due to its heavy weight. 350 ∼ 400cc of water will be good for 1.5 L PET bottle for its maximum flight.
Water Rocket use water and air to fly. The principle of Water Rocket propulsion is that, the compressed air spout water and the power of spouted water propel the rocket. Therefore the rocket that is filled only water cannot be propelled because the water cannot be compressed.
Likewise the following picture, fill the PET bottle with some water and pump the air into the bottle, then the air in the bottle will be compressed and the water molecules will be pressured, densified and trapped so it pressures both the inside of PET bottle and surface of water.
When the bottle cap opened water spouted out of bottle and it forces the PET bottle to fly. Due to it's great pressure the bottle propelled with great power. Obeying Newton's the third law of motion, "action and reaction" - every object has same reaction force against action - PET bottle propelled rapidly to the opposite direction of spouting water.
However one thing you have to be careful is that, without water or with lack of water, the air will leak, and the other hand with too much of water the bottle cannot fly far due to its heavy weight. 350 ∼ 400cc of water will be good for 1.5 L PET bottle for its maximum flight.
Khamis, 28 Mei 2009
Pertandingan Peringkat Daerah Segamat
Pertandingan Teknologi Pelancaran roket h2o peringkat daerah segamat akan berlangsung pada 24 Jun 2009 di SMK Maokil. Semua peserta-peserta yang akan mengambil bahagian diminta bersedia dengan 2 roket h2o bagi setiap kategori roket sasaran dan roket 'parachute'. Syarat-syarat penyertaan boleh diperolehi daripada pejabat pelajaran Daerah Segamat. Sekolah pengelola bagi kedua-dua pertandingan tersebut adalah SMK Munshi Ibrahim Labis.
Isnin, 25 Mei 2009
Bentuk - Bentuk Muncung (Nose Cone) roket H2O
Nie ada 2 gambar bentuk muncung(nose cone) yang boleh di eksperimenkan bagi roket anda. Apa yang perlu anda ketahui ialah semakin panjang bentuk roket maka jarak antara pusat graviti(CG) dan pusat tekanan(CP) akan menjadi semakin besar. Kestabilan sesuatu roket bergantung kepada beza jarak antara CP dan CG. Semakin besar perbezaan jarak antara CP dan Cg maka makin stabil lah roket anda.
Selamat mencuba......
Bagaimana roket H2O boleh terbang?
Terdapat beberapa daya yang bertindak ke atas roket h2o yang perlu diketahui iaitu sebelum, semasa dan selepas penerbangan. Tapi penerangannya dalam bahasa inggeris:
What makes a rocket fly? Of course, it is the pressurized air
inside the rocket that propels it upwards, but why does adding
water increase the height of the rocket? And how does the size
of the nozzle affect the rocket? To answer these questions, we
must look at the forces which affect the rocket during its flight.
When the rocket is sitting on the launch pad, the nozzle of the
rocket typically fits over some type of rubber or metal stopper,
called a “launch rod.” For the first few tenths of a second, all of
the rocket’s propulsive forces are generated by the pressurized air
pushing against the launch rod. This pushes the rocket upwards,
until the rocket lifts off the launch pad. We call this the “launch
rod reaction force.”
When our rocket has cleared the launch pad. We no longer have a
launch rod reaction force, but our propulsion now comes from
the water inside the bottle. The pressurized air pushes against
the surface of the water, causing the water to be expelled through
the nozzle of the bottle. This creates a propulsive force, pushing
the rocket upward.
Newton’s third law of motion states: “For every action there
is an equal, but opposite, reaction.” In this case, our action is
the expulsion of the water out of the nozzle, and our reaction is
the propulsive force on the rocket generated by our action.
After all of the water has been propelled out of the rocket, the
“air pulse” occurs. The air pulse is caused by the remaining air
pressure in the bottle leaving through the nozzle, much like the
water did earlier. This force is not nearly as great as the one
generated by the water, but it is important to consider it.
From this point on, our rocket no longer has any propulsive forces.
Since it already has so much speed built up, it continues travelling
upward, until the forces of drag and gravity finally bring the
rocket to a stop. The point at which the rocket’s velocity is zero
is called “apogee.”
What makes a rocket fly? Of course, it is the pressurized air
inside the rocket that propels it upwards, but why does adding
water increase the height of the rocket? And how does the size
of the nozzle affect the rocket? To answer these questions, we
must look at the forces which affect the rocket during its flight.
When the rocket is sitting on the launch pad, the nozzle of the
rocket typically fits over some type of rubber or metal stopper,
called a “launch rod.” For the first few tenths of a second, all of
the rocket’s propulsive forces are generated by the pressurized air
pushing against the launch rod. This pushes the rocket upwards,
until the rocket lifts off the launch pad. We call this the “launch
rod reaction force.”
When our rocket has cleared the launch pad. We no longer have a
launch rod reaction force, but our propulsion now comes from
the water inside the bottle. The pressurized air pushes against
the surface of the water, causing the water to be expelled through
the nozzle of the bottle. This creates a propulsive force, pushing
the rocket upward.
Newton’s third law of motion states: “For every action there
is an equal, but opposite, reaction.” In this case, our action is
the expulsion of the water out of the nozzle, and our reaction is
the propulsive force on the rocket generated by our action.
After all of the water has been propelled out of the rocket, the
“air pulse” occurs. The air pulse is caused by the remaining air
pressure in the bottle leaving through the nozzle, much like the
water did earlier. This force is not nearly as great as the one
generated by the water, but it is important to consider it.
From this point on, our rocket no longer has any propulsive forces.
Since it already has so much speed built up, it continues travelling
upward, until the forces of drag and gravity finally bring the
rocket to a stop. The point at which the rocket’s velocity is zero
is called “apogee.”
Ahad, 24 Mei 2009
Bentuk-bentuk sayap 3
Nie sayap yang paling simple...boleh pakai kertas manila kad je tapi bila kena air kena tukar yang baru kalau nak lancar dua tiga kali......selamat mencuba....
Rabu, 29 April 2009
Jumaat, 24 April 2009
Perasmian Pertunjukkan Automobil
Nie gambar Team roket maokil yang telah dijemput untuk membuat demostrasi roket payung terjun dan seterusnya merasmikan program kembara automobil 2009 dengan cara melancarkan roket payung terjun ke udara ... masa program tu berdebar jugak, takut roket payung terjun yang dilancar ke udara tak kembang tapi alhamdulillah....semuanya berjalan lancar.
seronok juga tengok budak-budak belia semua berminat nak belajar buat roket h2o. Insyallah nanti kalau ada jemputan daripada belia, team roket maokil akan menganjurkan kursus sehari kemudian terus buat pertandingan.....
Jumaat, 10 April 2009
Pelancar Ringkas
Pelancar yang ringkas boleh dibina daripada paip PVC.
Pada bahagian hujungnya diletakkan besi pengepam tayar motor/basikal.
Pada bahagian yang akan di masukkan badan roket h2o nanti, kabel plastik pengikat dipasang disekeliling paip PVC. Kabel ini berfungsi sebagai pemegang badan roket h2o nanti
Gambar yng lebih jelas bagaimana kabel plastik pengikat memegang mulut botol yng dijadikan badan roket h2o
Sedia untuk dilancarkan. Jika anda ingin membina pelancar untuk jarak jauh, pastikan paip PVC pada bahagian yang akan dimasukkan badan roket h2o dicondongkan 45 darjah.
selamat mencuba.......
Khamis, 9 April 2009
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