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Ramjets can be particularly useful in applications requiring a small and simple mechanism for high-speed use, such as missiles. The US, Canada, and UK had widespread ramjet powered missile defenses during the 1960s onward, such as the CIM-10 Bomarc and Bloodhound. Weapon designers are looking to use ramjet technology in artillery shells to give added range; a 120 mm mortar shell, if assisted by a ramjet, is thought to be able to attain a range of 35 km (22 mi).[1] They have also been used successfully, though not efficiently, as tip jets on the ends of helicopter rotors.[2]

In 1915, Hungarian inventor Albert Fonó devised a solution for increasing the range of artillery, comprising a gun-launched projectile which was to be united with a ramjet propulsion unit, thus giving a long range from relatively low muzzle velocities, allowing heavy shells to be fired from relatively lightweight guns. Fonó submitted his invention to the Austro-Hungarian Army, but the proposal was rejected.[5] After World War I, Fonó returned to the subject of jet propulsion, in May 1928 describing an "air-jet engine" which he described as being suitable for high-altitude supersonic aircraft, in a German patent application. In an additional patent application, he adapted the engine for subsonic speed. The patent was granted in 1932 after four years of examination (German Patent No. 554,906, 1932-11-02).[6]

In the Soviet Union, a theory of supersonic ramjet engines was presented in 1928 by Boris Stechkin. Yuri Pobedonostsev, chief of GIRD's 3rd Brigade, carried out a great deal of research into ramjet engines. The first engine, the GIRD-04, was designed by I.A. Merkulov and tested in April 1933. To simulate supersonic flight, it was fed by air compressed to 20,000 kilopascals (200 atm), and was fueled with hydrogen. The GIRD-08 phosphorus-fueled ramjet was tested by firing it from an artillery cannon. These shells may have been the first jet-powered projectiles to break the speed of sound.

At higher speeds still, part of the supersonic diffusion has to take place internally so there are external and internal oblique shock waves. The final normal shock has to occur in the vicinity of a minimum flow area known as the throat, which is followed by the subsonic diffuser.

Hello, I am Senada, currently living and working as a psychologist and clicnic mgmt assistant in Munich, Germany. I was part of the first LCL group, but had unfortunately little time back then to actively participate - hope, though, to be able to contribute and take part regularly this time (am normally still working when the online meeting takes place...).Currently I am interested in learning more about creative learning, so that I can use the knowledge for further developing and creating new learning tools/platforms for online courses and trainings in the health sector. Serious games are too getting more and more interesting for me, as they wonderfully allow to merge fun, education, training, self-development and personal growth.So! Am looking forward to this adventure and yes! - would love to become friends (at FB e.g.) and to exchange ideas, impulses and inspiration!Wishing you and me a lovely day -Senada

Hello, my name is James. I loved the last LCL, and am excited about LCL2. I have yet to explore Lego WeDo or Pico, but I am still enjoying Scratch, MaKey MaKey, and TurtleArt. The biggest and most valuable takeaway for me from LCL was how it changed and enhanced my perception of creative learning.

Hi, Karen!We did four days of prototyping/piloting (scribblebots, LED fashion, and two days of pinball machines) on the floor during winter break weeks. We'll be taking what we learned and creating a three-week Tinkering Lab program/exhibit (likely to be located upstairs near the moose) during the summer. Keep an eye on our website or subscribe to our facebook page to be notified. I'd tell you more if we knew more at this point! It's still a work in progress.

I think these edu-MOOCs have great promise in helping to facilitate discussions about transforming education to be interesting, relevant, and supportive... but huge gulfs still remain. I'm very interesting to see how LCL2 can help bridge some of those gulfs.

And I 've also changed many jobs till turning into a teacher, always around technology though. Once I used to be a database engineer, then I did some project management for a couple of years for educational technology projects, then I taught java at the university and finally I am here at the elementary school as an ICT and CS teacher and as a mom of two boys 8 and 11 years old. Hope to have time to explore new teaching ideas together,maria

Hello Creative Learners, My name is Juan, I was born and live in Santa Marta, Colombia, I am an new media artist , designer, hackeducator , maker and recently I co -founded a company that seeks to combine technological development , art and education, since I became a teacher I could not stop learning all the time, even though a year ago and left my teaching job , I am still interested to hack education for my two daughters and the people around me have better access to learning opportunities and knowledge.I have various interests such as datavisualisation, contemporary art, particle physics, 3d printing, creative learning, open source, neuroscience, creative commons, digital citizenship, visual arts, programming, robotics and many more.I found the LCL and I loved the proposal , and why I'm here , I want to share, learn and teach others, also want to hear and interact with different worldviews of people from diverse cultures and knowledge ..

Hi Massimo, I visited your blog and I'm very interested in the project MilleMolucche. I was thinking about something similar trying to use Open Source Intelligence strategy to help teenagers understand how they share very important things about themselves on internet very often unconsciously. I was thinking about a game where they should be investigators... but I still have very confusing ideas regarding how to implement it. I think that your idea to start before talking to younger children is very interesting, can you give me some more infromation about this projetct you are following? Thank you, Melissa

While still recovering from the bootcamp, I've learned that (it is more fun to be a pirate than to join the navy and) it is more about the journey rather than the destination and perhaps, the best way to do this well is to journey together as a community and creatively share what we've learned to others so as to better understand it ourselves.

My name is Beth, and I am a biology tutor and an advanced skills practitioner in information learning technology (ILT). I am interested in how online learning can be supported from both a blended (flipped) perspective, and in courses delivered completely online.I am also here for selfish reasons, as I was previously a post-doctoral researcher and briefly a lecturer in neuroscience; I just can't stay away from research;finding out new things and passing them on. Outside of work I enjoy gardening and Chinese brush painting, though I am still getting to drips with both.

Hi ,My name is James.I have been teaching now for about 20 years as a primary teacher in New Zealand. More recently I have been specializing in teaching ICT. I live in Manly, Auckland, New Zealand. My wife Christine is also a primary teacher. We have four children. Our oldest son is a web developer and our other children are still in school. I am excited to be joining LCL!

Hi! My name is Carlos and I am based in London, UK. I work in education and community development. I am interested in creating and promoting makerspaces in schools, libraries and communty centers. The maker movement is gaining traction in the UK but there is still a very long way to go. I am currently developing a 'maker cart' to introduce some of the machines, thinking and projects that are associated with makerspaces. I am also interested in learning and teaching creative learning and design thinking. I am open to collaborate with others and share ideas.

Welcome to LCL. More than a course this is also a community with people from different backgrounds, culture, languages, but has this passion in common. I'm happy to know that a person with your influence is such open minded and still connecting,learning and looking for making things better. The InnoCampus seems a wonderful idea! Congrats!I've been part of this since the first LCL in 2013 and as moderator since the last edition. I've met and connected to amazing people! Please feel free to ask about any doubts you should have.

I run a creative thinking initiative : giantpeachproject.tumblr.com Link here - it's still in its fledgling stages. With partnerships I hope to create so e education workshops, education resources, and social experiments that encourage people to rethink their everyday using their imaginations.

Also, I headed the organization of the annual edition undergraduate research fair of Polytechnic High School, here where I work this year. Moreover, we have a working group in our school being so awarded in international school science fairs for developing shingles recycling PET bottles. I never before had assumed such responsibility as a teacher, but someone had to do it; after all my colleague, with whom I planned the fair, was receiving awards in Peru, with their workgroup, in the only date that the school administration has given us to do so... Still, our internal school fair was very cool!

I liked what I saw from the pictures of your space. I would love to communicate with you about your experience in running your space. I run a similar thing but not from a school but from a science center which is affiliated to the organization I work for. We have students and adults come to our open to the public events. Most ofthe programs we have had using tinkering ideas to make participation a different learning experience. We are planning on bringing these programs to schools to get students to realize that knowledge can assimilated in ways other than the standarded classrooms. With what they have already they can be creative and it is important that they can still think independently. _Spaces/ 2b1af7f3a8