Delta Rocket - RC Glider or EDF Jet

thingiverse

DeltD Print Settings Printer: Han Bot Drt Rafts: No Supports: No Resolution: 0.2 Notes: Printer Settings: Brim = 5 layers Extruder Heat = 200 Bed Heat = 65 Print Speed= 100 Infill = 0% Shell = 0.4 Top Bottom thickness = 0 How I Designed This FreeCad 3D Modeling This model was designed using FreeCad. It was created using simple shapes and simple cut/union techniques that the program offers. Custom Section Project Project Name: Delta Rocket - RC Glider or EDF Jet Overview & Background: I designed this model as i wanted something more from the model rockets and rc planes that are currently available. i like flying rc jets/planes and i like launching model rockets. i wanted a rocket that i could send up high (100m +) and that i could fly back to earth. i wanted this model to not be limited to one use. if the model is scaled x10, it can fit a 50mm EDF inside the thrust tube. parts are made to push fit together and the optional parts required to convert to an EDF are also included. Objectives: Learning Outcomes In this project i aim to provide a walk through of how this model was created. By the end of this, you should have a clear understanding of the following techniques within FreeCad: Starting a Project Inserting Shapes Editing Shapes to create the model Bringing the Shapes together Finalizing the project Audiences: This is a project for any Hobby enthusiast. This is intended for ages 14+ when using as rocket or as RC If you choose to build as a display then age is not a problem. Parental supervision recommended when building the model. Skills Learned (Standards): The software used is FreeCad Starting a project inserting a shape hollowing a shape combining shapes model dissection model recreation finalizing a project This should provide a good understanding of how the FreeCad techniques work. Lesson/Activity: Please follow the below steps to create your own Delta Rocket - RC Glider or EDF Jet. 1- Open FreeCad 2- Create a new project 3- Let's start with the body of the model (fuselage) Insert a cylinder Change the length and diameter Hollow out the fuselage 4- Let's make the nose piece Insert a cone Change the length and radius Make the nose round insert a sphere change the size union the sphere to the nose cone hollow out the nose 5- Let's make the exhaust Insert a cone Change the length and radius hollow out the exhaust 6- Let's make the wings insert a cube change it's length, height and width turn the cube into a wing add an aileron 7- For EDF purposes, let's add some air ducts insert a sphere change dimensions hollow out the sphere insert a cone hollow out front of sphere to create air ducts 8- For EDF purposes, let's add a cable cover insert a cylinder change dimensions hollow out the cylinder and cut one side so it does not join together 9- Last part, let's make a vertical fin insert a cube change it's length, height and width turn the cube into a wing using cut technique Duration: The model took 2 hours to create. Print Duration: Model should print in 1-2 hours depending on size and quality. I printed this at 100mm/s on a 200x200mm bed. The print was scaled to 1.5. Preparation: Create a model using FreeCad: Make sure you have several hours free, a coffee and FreeCad. Printing this model: Software: Scale to the your preferred size Lay pieces so that the printer does not have difficulty printing them. the wings need to be printed on the leading edge Slice at desired speed and infill. Print with brim to be safe Printer: Level bed add adhesive Heat bed Heat nozzle Print References: http://www.thingiverse.com/thing:1585249 This guy produced an awesome FreeCad guide. I learned heaps from reading and following his guide. Thanks heaps for the lesson. Look forward to seeing more of your works... Top view of final Model Front view of final model FreeCad Main Page. Step 1 Starting a new project. Step 2 Need to make sure we have Part selected up the very top. Now we have shapes. Inserting a shape. Creating the fuselage. Step3 Click on the shape you want to insert. For this project we are using a cylinder. Make changes to the shape's Radius and Height. Right click on the shape and click Fit All or Fit Selection. This makes for easy viewing of the complete model or the piece being worked on. Select the original shape from the top left, on the keyboard (ctrl+c & ctrl+v). this will create a second shape the same as the first. Select the second shape from the top left corner and change its radius to be smaller then the original shape. Select the two shapes, first the original (bigger) shape and then the new (smaller) shape, holding down the ctrl button on the keyboard. Once both items are selected, click Part on the toolbar and Boolean. In the sub menu select Cut. Now we almost have a fuselage. the two shapes we started with have now been combined into one shape called Cut Adding a front part to the fuse so the nose can slide over. Do this by inserting another cylinder and changing the radius. Copy and paste the cylinder and change the second cylinders radius to be smaller. Select the two cylinders (bigger one first and smaller one second). Boolean - Cut. this will hollow out the new shape we added tot he front of the fuselage. The two parts are in place and they are both hollow. We need one of these pieces for the exhaust to slide over. Copy and paste the newly made Cut001. it will ask if you want to copy object dependencies. i normally say No. Create the copy, newly created Cut002 Move Cut002 to the back by changing the position in the z axis. Insert a cone, change the measurements to fit the fuselage. Copy the first cone and paste. Make the second cone a tiny bit smaller. Select the two (biggest cone first). Let's cut the shapes out and make the nose hollow. Hollow nose cone...Almost finished the nose, we will come back to this. Let's make the exhaust. Insert another cone and move it to the back of the fuse by changing the z axis position. Change the radius to fit the fuse and reverse the direction of the cone. The exhaust needs to be hollow so we will use the same technique used to hollow out the nose and the fuse. Copy and paste the cone, change measurements of the second cone to be smaller then the first. Select the two (biggest first). Cut the shapes out. Now we have an exhaust that is hollow and that should fit over the fuselage. Back to the nose. Insert a sphere and move it to the front of the nose cone. Make the sphere smaller by changing the radius. Move the sphere back so it is half in the nose cone and half out. Let's make the nose and sphere a single piece. Select the two peices. To join the pieces together we need to use the Union technique within FreeCad. Now we have a new item called Fusion. this is the new nose cone and sphere as one shape. What have we learnt so far...what step are we up to? So far we have learnt how to: Start FreeCad Setup a new project in FreeCad Insert basic shapes into the new project Hollow out shapes using other shapes of the same style. Union two different shapes. We step are we up to? we are up to step 6 - Creating the wing. we have completed steps 1-5 we have FreeCad working we have a project environment we have a fuse we have a nose cone we have an exhaust all pieces should fit into each other. Step 6: Making the wing To do this, i create a new blank project and build my wing in that section. I find it easier to work on one part at a time and if i rather have it in it's own window. Once we are finished with this piece, we can bring it back to the main project. Let's insert a cube and change its dimensions so that is looks flat enough to be a wing. Insert a second cube, rotate the cube by changing the axis from z to y (do this by putting a 1 next to Y and a 0 next to Z). Change the measurements of the cube so it fits over the existing cube. Please not we a re working on the LEFT wing. We need to use FreeCad's Cut technique again. We are left with the above shape. This shape needs an aileron. Let's make an aileron for the wing. Insert another cube, change it's measurements as required to fit the wing nicely. Make a copy of the aileron part. we make a copy as we will use the first one to cut the aileron shape into the wing. The copy will then become our aileron part. using the cut technique again...selecting the main wing first and then the aileron part. Now let's give this aileron something to hold on to. In the above pic, i have moved the aileron back so i t can be clear what we have done. To do this, change position Z axis. The easiest way i have found to make an aileron go up and down freely without falling out of position is to use ball joints. I have inserted a sphere and have changes its measurements to fit inside the wing. Half the sphere is inside the wing and the other half outside. We need 4 of these spheres. 2 on the main wing and 2 on the aileron. The main wing will need to have the spheres joined to it. we use the union technique. Selecting the main wing first and the sphere second. Now join the other sphere onto the main wing. the main wing now has two spheres for the aileron to grab onto. We need to fix the aileron now. Let's make the aileron work. We need to use the cut technique to make the spheres into holes. The sphere on the right of the aileron has now been removed and at the same time it has created a spot for the aileron to fit the ball on the right side of the wing. We must do this to the left side of the aileron as well. Now we have finished the wing. to make the aileron fit 100% will need to make it a little smaller from left to right. How to make the second wing quick and easy. Once we have finished the first wing and we are happy with what we see on the screen, we need to make a second one. We have finished the left wing and we are happy with how it looks. Now we want to replicate this and create the right wing. You can do this by selecting the wing and aileron, navigate to the toolbar button called "Mirror". This will create a a mirror copy of the wing. Another option is to select the wing and aileron. Copy and paste. Select the newly created two files and rotate them on the desired axis. By changing the z axis value to 180, the wing will be a mirror of the original but on the right side. We have just created the right wing. Using the mirror feature to create the second wing. Mirror done and so is the right wing. The Rocket Glider is now ready for some electrics. This should be enough to fly. The models needs a receiver, 2 micro servos (one for each wing), a small 1s or 2s battery and a size A rocket engine. The size A rocket engine should get this little model up to 100 meters minimum and then you can steer it back down to earth using your transmitter. i recommend putting the battery as far forward as possible to encourage some nose weight. If you choose to use this a rocket only and do not want to have any electrics in it, i recommend securing the ailerons and then letting it rip. Let's turn this model into an EDF RC Jet So the rocket and glider idea entertained me for a short time but then i reverted back to my jets. I don't just want to steer it down to earth, i want to fly this thing. I need a power supply system that will deliver thrust for longer then what a small rocket can. By scaling up the plans for this model (x10) i can fit a 50mm EDF in the fuselage. When adding an EDF to this equation , we need to consider where the cables will go and how to best protect them. We also need to think about air flow. The EDF needs air rushed into it so that it can produce thrust. With the rocket/glider version, we did not have this worry as the model was designed to be sharp and cut through the air. Let's make the EDF mods. The brushless motor wires will need to run outside the thrust tube. I ran the the wires over the top and created a tube to cover everything. The tube can be glued down to the and it has and insert for a vertical fin. Give this a go: To make the wire cover, refer to the the steps we used to make the fuse. Once the fuse replica is made, insert a cube the length of the fuse and use it to cut a flat section. The flat section needs to fit over the main fuse. To make the vertical fin, refer to how we made the wing. Cut the fin to whatever shape you like, get creative. To make an insert in the wire cover for the fin to slide in, refer to the section on ailerons. Last part, we need to make is the air vents. I make this using a sphere and a cylinder. Make the cylinder the same size as the fuse and make the sphere double the fuse size. Hollow out the sphere using the cylinder and the cut technique. Sphere is now hollow. We need air vents. Insert a cone. Change the position and the axis so the cone fits like the above picture. Copy the first cone and create the second cone. With the copy, make the axis negative and reverse the Y position. Remember to select the sphere first and to do one cut at a time. Once the first cut is done the part will get called Cut#. That's it All the pieces are now done. Below are pics of printed version. Thanks for reading Hope it helps Jet In pieces Estes rocket All done, have fun.