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model-jet-planes-video-github All components are held by 3D-printed brackets which clamp on to the frame tubes. Threads and fine holes - Most filament deposition printers do not have sufficient resolution to print threads or fine holes. Autopilot modes cannot be triggered via key bindings or controllers and must currently model jet planes video github triggered in the cockpit with the mouse. Some of the constraints which were important for the Hoverjet parts are:. ABSit is stronger, stiffer, and maintains it strength up to a higher model jet planes video github. These tokens do time out from time-to-time, vireo if you're mosel by the aircraft, or if you ever encounter difficulties loading charts, please go back to this option and resync your account.

These tokens do time out from time-to-time, so if you're prompted by the aircraft, or if you ever encounter difficulties loading charts, please go back to this option and resync your account. Details on using the Charts capabilities are in the user guide.

Skip to content. Releases Tags. This commit was created on GitHub. Choose a tag to compare. Search for a tag. Working Title CJ4 v0. Installation Installation is easy, simply copy the workingtitle-aircraft-cj4 folder inside the zip file to your MSFS Community folder. VNAV Fixed bug where in certain circumstances below constraints were not observed in the first segment of the vertical flight plan.

Adjusted glideslope capture to be more sensitive Model Jet Planes Video Zip and only capture with less than half scale deflection. This is currently a sim AP issue. Loading and saving flights can have bad results. Autopilot modes cannot be triggered via key bindings or controllers and must currently be triggered in the cockpit with the mouse.

Components can be added or relocated by adjusting the bracket locations or printing new brackets. Maintenance is easy: only a single hex key is needed to Model Jet Planes Video Unity remove any component all fasteners are 6 SHCS , and the frequently-accessed avionics bays are on the outside of the vehicle.

The most expensive component, the engine, is "caged" by the rest of the structure. The fuel tanks are filled with a open-cell foam, which prevents sloshing and limits severity of a fuel spill if the tanks are ruptured a technique borrowed from auto racing. We needed to build and maintain the aircraft in my friend's home machine shop. He does not have CNC cutting machines, so I designed most of the geometrically complicated parts to be made via 3D printing filament deposition.

Below is a time lapse of his Prusa i3 mk3 printing the main frame which holds the jet vanes and frame tubes. Compared to typical filament plastics i. ABS , it is stronger, stiffer, and maintains it strength up to a higher temperature. Additive manufacturing is not magic - one still has to pay careful attention to the design-for-manufacturing constraints.

However, additive processes have a different set of constraints than traditional cutting and forming processes. Some of the constraints which were important for the Hoverjet parts are:. Overhangs - Filament deposition printers cannot print large overhangs, or else the part will sag before the plastic filament cools.

When designing the parts for Hoverjet, I considered the orientation in which the part would be printed early in the design process, and shaped the details of the geometry to avoid overhangs in that direction.

Some filament printers can allow overhangs by printing a soluble support material under the part, but our printer did not have this capability. Threads and fine holes - Most filament deposition printers do not have sufficient resolution to print threads or fine holes.

On Hoverjet, I used heat-set threaded metal inserts to create threads in the printed parts. For holes that needed a close fit around a fastener, I printed the holes undersized, and then drilled them out to the required diameter. Anisotropic strength - Parts made by filament deposition are weaker in the z axis normal to layers than in the xy plane within layers.

For loaded parts, the printing orientation was chosen so that the loads would primarily be in the within-layer plane. This sometimes conflicted with the orientation which minimized overhangs, and resolving these conflicts required some judgment. Printing environment - Filament deposition printers are sensitive to the temperature and humidity of the printing environment. Variations in temperature cause the part to cool unevenly, which can distort its geometry or cause layers to peel apart from each other.

Many filaments including nylon will absorb moisture from humid air, and do not print well when wet. These issues are best managed by printing within an environmentally-controlled build chamber. However, Stratasys Inc. One can work around this limitation by putting the entire printer within a separately-purchased enclosure.

We used this approach, and also put desiccant in the enclosure to Model Jet Planes Video Windows 10 keep the humidity down it's the blue substance in the above video. I put a temperature and humidity gage in the enclosure to monitor the environment. I learned a good deal about additive manufacturing from Prof. John Hart's excellent 2. It was fun and instructive to apply what I had learned to this project. One interesting feature of the airframe is the IR radiation shield.

This reduces the radiative heat transfer from the jet nozzle to the surrounding structural components. These components are composite, and will weaken if they get above K. To reduce radiative heating of the structure, I surrounded the nozzle with a two-layer radiation shield made of aluminum. Infrared radiation from the nozzle must be absorbed and re-radiated by each layer before reaching the structure. The layers are separated by fiberglass cloth to prevent contact and thermal conduction between the layers.

This design is vaguely similar to the multilayer insulation used on spacecraft. The shield works - during static tests we have run the engine at full throttle for several minutes without any damage to the surrounding structure. We started by discussing the goals and requirements as a team.

I then though about manufacturing constraints - how much money were we willing to spend, what tools were available in my friend's shop, how much of the vehicle could I make on campus and bring with me? After establishing this context, I made a few design sketches see below and discussed them with the team. We selected the dual-tank configuration. I then asked the team to select or specify dimensions for the major components.

I made a rough-cut CAD assembly to make sure all the major components fit. After reviewing this with the team, I preceded to the detailed mechanical design. Throughout the entire process I kept a mass budget of the vehicle, which I refined as the design matured. The final design came in slightly under the initial mass prediction 9 kg vs 10 kg.

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