motion flight sim theory, man in Kinetic flight sim

Motion Flight Sim Theory – 3 Things You Need To Know

How Our Bodies Detect Motion

First of all, as I introduce the subject of motion flight sim theory, it helps to start with a foundational understanding of how our bodies sense movement and orientation. Movement is our sense of acceleration/deceleration and the notion that we are traveling through a space. Orientation is our attitude in space, our sense of pitch, roll, and yaw. The quality of a motion flight sim is in its ability to fool the human sensation of movement and orientation. For many normal flight attitudes in an airplane, there is a corresponding flight sim action that can emulate how it should look and feel from the cockpit. Consequently, this is the basis of motion flight sim theory.

 

Motion Flight Sim Theory: How do we know we’re moving?

The human body has three systems that inform the brain about movement and orientation:

  1. Visual system – the eyes that sense position by what is seen
  2. Vestibular system – the inner ear organs that senses balance and orientation
  3. Somatosensory system – the nerves in your body that sense position and movement. For example, when you accelerate forward, you feel pressed back into your seat.

Valid motion flight sim theory states that a moving rig, like the Kinetic motion flight sim, does specific things to fool each of these systems.

 

Visual System

A pilot recognizes his position in space by seeing the simulated environment produced by the flight sim software. It is vital that the pilot only sees the simulated environment, and nothing else. For example, imagine you’re looking at the flight sim displays, but you can also see the walls of the room in your peripheral vision. As a result, your brain will not be fooled.

One way to create an immersive visual experience is to seat the pilot in an enclosed cabin like the expensive flight sims used by airlines. Even when a pilot uses an inexpensive DIY rig like the DIY Flight Sim Pod he can feel immersion because all he sees is the simulated flight environment. The other option is to use a high-quality virtual reality headset. In either case, the pilot must not see the room beyond the flight sim.

Even with a static flight sim, an effective visual system can give you a feeling of movement… or even motion sickness if you are prone to it.

 

Vestibular System (the Inner Ear)

In our airplane, we control movement around the pitch axis, the roll axis, and the yaw axis. Coincidentally, the inner ear contains three semicircular canals that are aligned roughly the same way – pitch, roll, and yaw. How do we fool the inner ear? You already know at least one way to do it. We discover as little kids that if we spin around and around, we get dizzy and lose our balance. The effect is so profound that even when we stop spinning, we still stagger around for a bit before fully regaining our balance.

The semicircular canals contain tiny hairs and a special fluid. When the fluid is displaced by movement, the hairs are pushed around by the moving fluid. The brain interprets this signal as motion.

In a motion flight sim that moves in pitch, roll, and yaw, the inner ear will also detect that same movement. In real airplanes, there are certain scenarios that can confuse a pilot’s inner ear and cause spatial disorientation. Furthermore, some of these scenarios can be emulated in a simulator.

 

Motion Flight Sim Theory - Semicircular Canals
Motion Flight Sim Theory – Semicircular Canals

 

Somatosensory System

Imagine accelerating down a runway. You can feel yourself being pressed back into your seat. Now imagine you’re in a regular chair and you simply lean back in it. You can feel yourself being pressed into the back of that seat too. Your somatosensory system will give you a similar feeling for the two situations, to a certain extent. A motion flight sim can fool your somatosensory system for mild maneuvers and mile acceleration/deceleration.

When you’re in a real airplane, and you’re making a steep bank, your somatosensory system will tell you when you’re starting to pull G forces. In a 60 degree bank, you will feel two G’s as you are pressed down in your seat. If you fly inverted, you will feel one negative G as you hang upside-down from your seatbelt. Unfortunately, we can’t simulate G forces like that in a simulator. But certain motion flight sims can simulate heave, like turbulence, or like a hard landing.

 

Putting it All Together: Motion Flight Sim Theory

For example, imagine a pilot is in the Kinetic motion flight sim and he starts a climbing turn. He can see the simulated horizon and as he banks the wings, he can see the corresponding bank angle. Also, shadows inside the cockpit move as the airplane turns. This is a climbing turn, so the pilot also pulls back on the joystick. His inner ear detects that he is pitching nose up. The pilot also feels that he is being pressed back in his seat slightly, that’s his somatosensory system.

The pilot should feel like he’s flying. If the pilot is in a quality motion flight sim, then the machine is able to fool the pilot’s sense of motion and orientation.

disassemble enclosed flight sim

How to Disassemble the DIY Flight Simulator Pod – Enclosed Flight Sim

The DIY Flight Sim Pod is a fully enclosed flight sim cockpit and your view is completely filled with the simulated environment. Therefore, you don’t see the other things in the room like furniture, book shelf, plants, etc. You fly in a totally immersive environment. In addition, when you strap into the Pod to start a flight, it really feels like you’re preparing to go somewhere. It’s relatively easy to disassemble the Flight Sim Pod because it’s a modular structure. This is how to disassemble this enclosed flight sim.

Enclosed Flight Sim Components

The entire project includes three major assemblies, three subassemblies, flight simulator hardware (including computer), and displays.

Major assemblies

  • Inner Frame
  • Left fuselage side
  • Right fuselage side

Subassemblies

  • Nose cone (top and bottom)
  • Top Canopy with Bumper
  • Tail

 

Enclosed flight sim Pod, partial disassembly
Enclosed flight sim Pod, partial disassembly

 

Disassemble the Enclosed Flight Sim

Start by removing the Tail, Top Canopy with Bumper and Tail. The Bumper is simply the single padded PVC pipe that attaches the Left and Right Fuselage Sides just below the Top Canopy. Unscrew the self-drilling screws as needed to free the PVC fittings.

Next, remove the Left and Right Fuselage Sides. This leaves the Inner Frame still packed with computer hardware and displays. Again, unscrew all self-drilling screws necessary to free the applicable fittings.
Carefully remove the 40” HDTV main display, cushion it, and place in moving box. Do the same with the instrument panel display. Finally, remove and box all computer hardware and flight controls.

 

Disassemble the Inner Frame

The Inner Frame consists of lumber and PVC pipe and is consequently the strong center structure of the enclosed flight sim. The Nose Cone is the pipe and foam structure that attaches to the front of the Inner Frame.
The top and bottom of the Nose Cone is glued together. However, you can separate the bottom Nose Cone panel by cutting just under the point of the Nose Cone. Cut from across the top edge of the bottom Nose Cone panel and also the top corners around the fittings. This will separate the top and bottom of the Nose Cone leaving only the fittings to hold them together. Remove self-drilling screws as required.

 

Enclosed flight sim, ready to move
Enclosed flight sim, ready to move

 

The Pod on the Move

If you load the Pod into a moving van, note how many of the parts can lay flat. Even the Inner Frame doesn’t take up much room because it’s like a shelf – you can load boxes onto it. Your flight sim controls will all fit into boxes as shown in the picture.

Home Flight Simulator for Sale, 7 Ways to Choose

7 Ways to Choose the Best DIY Flight Sim | Home Flight Simulator For Sale

You’re looking for a home flight simulator for sale and you come across two similar DIY projects. How do you tell the two apart? The DIY Deluxe Desktop Flight Sim and the DIY Triple Screen Flight Sim are similar, but there are some significant differences too. Here are 7 ways to choose the best multi-screen DIY Flight Sim for you.

Note: for brevity, you’ll see me refer to the projects by their item numbers.
Item #D250: DIY Deluxe Desktop Flight Sim
Item #T440: DIY Triple Screen Flight Sim

1. Adaptability

The D250 Deluxe is much more adaptable than the T440 Triple Screen.
D250: You can build the D250 with a yoke and throttle quadrant, or pair it with one of the DIY floor frames so you can use HOTAS style controls or even a helicopter collective. Match the D250 with the #F311 Side Joystick Frame, the #F321 Center Joystick Frame, or the #F331 Easy Helicopter Collective.
T440: On the other hand, the T440 is great with a yoke and throttle quadrant as originally designed. But if you want a joystick and side throttle, you would need to invent some modifications.

 

2. Recent Work

The D250 instructional video is much newer than the T440.
T440: I produced the T440 video in 2011 as a part of a successful Kickstarter campaign. I had a very short amount of time to design and build the project and a short time to film, edit, and publish the video. It’s still a great project though.
D250: I produced the D250 video in 2016 so it has better lighting, better sound, I used a better camera, and I had more experience editing than I did in 2011.

 

Deluxe Desktop Flight Sim with Side Joystick Frame
Deluxe Desktop Flight Sim with Side Joystick Frame

3. Displays

The D250 has larger screens.
D250: I used 32” HDTVs for the three main displays. The combined screen width is over 6 feet wide.
T440: I used 24” monitors for the three main displays. The combined screen width is less than the D250, but still impressive.

 

4. Keyboard Modification

The T440 was designed to have an overhead panel like an airliner. For this reason, the T440 Triple Screen bundle includes the DIY Airliner Keyboard Modification. The D250 doesn’t have a place for an overhead panel.

 

Home flight simulator for sale, how to choose the best
Home flight simulator for sale

 

5. Styrofoam

The T440 has Styrofoam, the D250 does not.
Builders use ½” styrofoam sheets when constructing the T440 Triple Screen project. Styrofoam may be cheap or expensive depending on where you live in the world.

 

6. Instrument Panel on a 4th Monitor

T440: You will see several builders in the Customer Gallery added a 4th monitor to display the flight instruments. I didn’t include anything about that in the instructions, those clever builders modified their projects on their own.
D250: I included instructions to add an optional 4th monitor for the flight instruments.

 

DIY Easy Helicopter Collective
DIY Easy Helicopter Collective paired with the Deluxe Desktop Flight sim

 

7. Ease of construction

I think the D250 is easier to build than the T440.
D250: The project doesn’t require gluing any Styrofoam panels in place. But the D250 does include 1×8 boards. If your saw won’t cut 1×8 boards, you’ll need to get that done at the store when you buy them.
T440: The project doesn’t require you to cut any lumber wider than a 1×6. You do cut Styrofoam with a utility knife, but it is not difficult just a little time-consuming.

 

Home Flight Simulator for Sale

You have a lot of choices when it comes to your home flight sim project. I hope this comparison helps you.

How to Build Your Own Helicopter Simulator

How to Build Your Own Helicopter Simulator Controls

When you try to fly helicopters with regular HOTAS flight sim controls one thing is perfectly clear: a throttle is definitely not a collective. A legitimate helicopter collective control is essential if you fly (or are learning to fly) helicopters. Unfortunately, retail collective controls are surprisingly expensive. Consequently, I created an online course that shows you how to build your own helicopter simulator controls.

 

The DIY Easy Helicopter Collective

This project does two major things. Firstly, it allows you to use a standard HOTAS throttle as a collective. The PVC pipe framework suspends the throttle vertically and connects it to a collective lever via a linkage. Most noteworthy: you don’t have to modify the throttle because the linkage straps onto the throttle handle without harming it. You can adjust the sensitivity of the collective by moving the linkage. Also, you can adjust the collective resistance with a friction knob.

The second thing this project does is make it easy to switch back to airplane configuration. Maybe you still want to fly an airplane once in a while. You can add the optional throttle stand and easily move the throttle for a HOTAS (hands on throttle and stick) control configuration. Best of all, you don’t have to change the control assignments in the flight sim software. It’s so easy! It’s also easy to build your own helicopter simulator collective. That’s why I named this project the DIY Easy Helicopter Collective.

 

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Online course

I produced an affordable, online course that shows you how to build your own helicopter simulator collective. I show you how to build this project with inexpensive materials from your local home improvement store. We’ll be working with PVC pipe, lumber, paint, and other materials.

This comprehensive course includes:

  • Video clips
  • Full text instructions
  • Diagrams and pictures
  • Pipe frame maps in US and Metric measurements
  • Printouts

You can view the course on nearly any device even smart phones and tablets. See the full curriculum and a free trial at this link. Most noteworthy, the DIY Easy Helicopter Collective course is available now at a new lower price!

DIY Triple Screen Flight Simulator update

Free Update: DIY Triple Screen Flight Simulator

Roger Dodger Aviation’s defining project is probably the Triple Screen Flight Simulator, item #T440. This project has sold well since it was published in 2011. In addition, hundreds of people have flown the sim at the KC Maker Faire and at the National Airline History Museum. I’m proud to announce this DIY project is now available as a online e-learning course. If you already purchased the DIY Triple Screen Flight Simulator project as a download, you will be upgraded to the online course for free.

 

What is the DIY Triple Screen Flight Simulator Update?

The new version is the same content, but in an online e-learning format. This means the student sees the video clip, instructions, pictures, and diagrams for each particular step. You no longer have to look through an hour long video or 100 page manual to find something. Furthermore, you can access the course on mobile devices like smart phones and tablets as well as standard desktop and laptop computers.

 

Build with materials from a hardware store
Build with materials from a hardware store
DIY Triple Screen Flight Simulator online course
DIY Triple Screen Flight Simulator online course

 

 

 

 

 

 

How do You Get the Update?

If you’ve already purchased item T440 DIY Triple Screen Flight Simulator, the new update is FREE. Just email me at DIYflightsims@rogerdodger.net to get the new updated version. In addition, tell me what email address you used so I can look up your order. Then, I’ll send you a coupon code that allows you access to the update for free. Also, you get free access to the Builder Academy where you can learn all the basic skills for building DIY Flight Sim projects.

 

DIY Triple Screen Flight Simulator free update
DIY Triple Screen Flight Simulator free update

 

What About the Keyboard Mod?

You get it too! The original DIY Triple Screen Flight Simulator project always came with the DIY Airliner Keyboard Mod project, item #K140B. The reason was that it was so easy to install an overhead panel in to this type of cockpit. The keyboard mod is also in an online e-learning format.

 

 

Free Update

DIY Flight Sim Keyboard Mod Update

DIY Flight Sim Keyboard Stickers and More

My finest keyboard modification project by far is the DIY Airliner keyboard Mod, item #K140B. This project replicates
an overhead panel and Mode Control Panel from popular modern airliners. This product is more than simple flight sim
keyboard stickers, this is a comprehensive DIY project complete with an online tutorial. If you have this product, you
get the update for free.

 

DIY Airliner Keyboard Mod, build it your way
DIY Airliner Keyboard Mod, build it your way

 

What is the Update?

The new version is in a totally online format. This means that you see a video clip, instructions, pictures, and
diagrams for each step. As a result, the new course is a much improved, learner-centered presentation. The printout
flight sim keyboard stickers are also included. In addition, you can access the course on mobile devices like tablets
and smart phones as well as the standard desktop and laptop computers. See the free trial version here.

 

How do you get the Update?

It’s easy! If you’ve already purchased item K140B DIY Airliner Keyboard Mod, the new version is FREE. Simply email
me at DIYflightsims@rogerdodger.net to get the new updated version. In addition, tell me what email address you
used so I can look up your order. Then, I’ll send you a coupon code that allows you access to the new version for
free. Don’t forget, you also get free access to the Builder Academy. Learn all the basic skills for building a DIY Flight
Sims project.

 

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More about the DIY Airliner Keyboard Mod

I first created this product in 2008, and it has been a great help to many home cockpit builders. Consequently, I’ve updated the project several times. I also included it with the purchase of the DIY Triple Screen Flight Sim, item #T440. You can see a preview of the newest version here and also check out the demo video below…

 

DIY enclosed flight simulator update

DIY Flight Sim Pod enclosed flight simulator | Free Update

The DIY Flight Sim Pod Enclosed Flight Simulator

If I had to choose my favorite DIY Flight Sim project, I think it would be the Pod. It’s my only enclosed flight simulator project so you actually enter it like a vehicle. When you take a flight in the Pod, it’s more like leaving on a trip. Plus… it’s big. This enclosed flight simulator is more than just a shell packed full of hardware, it also has an attractive exterior. I dreamed about having a flight sim like this for a long time before I had the opportunity to build one. Plus, I worked on the DIY videos, instructions, pictures, and drawings for over a year. Now I can present the entire project to you, step-by-step, so you can build one too.

DIY enclosed flight simulator cockpit
DIY enclosed flight simulator cockpit

 

What is the Update?

The updated version of these plans are in a new, online tutorial format. This means that for each step of the project you see a video clip and the associated instructions, pictures, or printouts. Recall the original Pod video is over 2 hours long and the manual is 130 pages. The new course is a better, learner-centered presentation. In addition, you can access the course on nearly any device like tablets and smart phones in addition to desktops and laptop computers. This means it’s easy to take the tutorials with you into your garage or workshop while you build. There are a few printout templates, and yes, you can still print them out. You can see a free trial here.

Krystal flying the enclosed flight simulator Pod
Krystal flying the enclosed flight simulator Pod

 

How do you get the Update?

This new online version is FREE if you’ve already bought the E430 DIY Flight Sim Pod enclosed flight simulator course. Email me at DIYflightsims@rogerdodger.net to get your updated version. Be sure to tell me what email address you used when you ordered so I can look you up. Then, I’ll send you a coupon code that will allow you access to the online lessons for free. Start the epic journey of building and flying the DIY Flight Sim Pod!

DIY Helicopter Simulator Controls, free upgrade to online tutorials

DIY Helicopter Simulator Controls | Free Upgrade to Online Tutorials

What is the Upgrade?

The F331 DIY Easy Helicopter Collective is one of my favorite projects because it fills an urgent need in the flight sim community. Try to find a helicopter collective control for a reasonable price. You will not find one, they are all hundreds of dollars. My DIY Helicopter Simulator Controls are still, after several years, the most cost-effective solution for home flight sim pilots. My tutorials show you how to build a framework from PVC pipe. You then attach standard HOTAS joystick/throttle and rudder pedals. The new, upgraded version of these tutorials are completely online and can be accessed with any device. No more cumbersome downloads!

 

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How do you get the Upgrade?

This new online version is FREE if you’ve already bought the F331 DIY Easy Helicopter Collective. Email me at DIYflightsims@rogerdodger.net to get your upgraded version. Be sure to tell me what email address you used when you ordered so I can look you up. Then, I’ll send you a coupon code that will allow you access to the online lessons for free. You can then build your own DIY Helicopter Simulator Controls and get flying… and hovering.

 

More about the DIY Helicopter Simulator Controls

Have you ever tried to fly a helicopter with a regular flight sim throttle? It’s not enjoyable. There is a reason why helicopter controls look different than airplane controls – they ARE different. Once you try a helicopter collective, you will never want to go back to a regular throttle. When you use a collective, the movement is completely natural, you don’t have to even think about the controls any more, just make the helicopter do what you need it to do. I could never hover, or even land a helicopter before I built my collective. Now everything is easier.

Below is a demonstration of the DIY Easy Helicopter Collective, among other things…

 

DIY HOTAS mount, upgrade to the new version

DIY Side Joystick Frame Upgrade | DIY HOTAS mount

What is the Upgrade?

The F311 DIY Side Joystick Frame project demonstrates how to build a simple and useful DIY HOTAS mount for your flight simulator controls. You can attach the joystick, throttle, and rudder pedals to this sturdy framework. Furthermore, you don’t have to modify your office chair or desk! The new upgrade provides more room on the side stands which is especially helpful when you wear a Virtual Reality headset.

 

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How Do You Get the Upgrade?

The project upgrade is FREE if you already purchased the F311 DIY Side Joystick Frame. Just email me at DIYflightsims@rogerdodger.net to get your upgraded version. Be sure to tell me what email address you used so I can verify your order. Then, I’ll send you a coupon code that will allow you free access to the project.

You can get the updated F311 project here and then access the plans on any device. The F311 instructions are completely online, so you don’t have to download anything. The instructions, streaming videos, pictures, and printouts are all included with this online training course.

 

More about the DIY HOTAS Mount

I realized that I needed to make a few changes to the F311 frame when I tried the Oculus Rift VR headset. Remember, you can only see things inside the headset when you use VR, so it’s difficult to tap a keyboard key or find your mouse. As a result, my solution was to attach a trackball mouse beside the joystick. It’s always in the same place, so I don’t have to look for it. I tested (e.g. played with) this solution for many hours on Elite Dangerous.

Even in its original configuration, the F311 Side Joystick Frame works well with many types of flight sim setups. It’s easy to slide the frame under a desk or table, and then roll up to the frame with your office chair. Hold your chair in place with the Velco straps. Remember, you don’t have to modify your chair or desk to use this DIY HOTAS mount. This is a great addition to your home flight sim and works well with Lockheed Prepar3D, X-plane, Flight Sim World, FSX Steam, and others.

Upgrade DIY flight sim with yoke + throttle quad for your FSX Multiple Monitors setup

DIY Deluxe Desktop Flight Sim Upgrade | FSX Multiple Monitors

Upgrade Available

The D250 DIY Deluxe Desktop Flight Sim project shows you how to build a multiple monitor flight simulator for your home. Until now the project was only used with a joystick and side throttle. However, this update makes it possible to use the D250 frame with an airplane yoke and throttle quadrant. The instructions show you how to raise the center instrument panel to make room for the yoke. Also, the Saitek switch panels are mounted in a different configuration which are detailed in the new plan drawings. The new switch panel placement is better for a pilot that is flying with a yoke. Use the D250 home cockpit with your FSX multiple monitors setup… or P3D, or X-plane, or Flight Sim World. The project is platform independent so you can use it with any flight sim program.

 

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How To Get Your Upgrade

This is a FREE upgrade if you already purchased the D250 Deluxe Desktop Flight Sim. Email me at DIYflightsims@rogerdodger.net to get your update. Tell me what email address you used when you ordered the project so I can verify your order. I’ll send you a coupon that will allow you free access to the project.

You can get the updated D250 project here and then access the plans on any device. The D250 instructions are now 100% online, so there are no downloads to worry about. The instructions, videos, pictures, and printouts are all categorized for easy access. You will receive ALL of the instructions, so scroll down to “Instrument Panels: Yoke and Throttle Quadrant” to see the updated material.

 

FSX Multiple Monitors

The new upgrade means that the DIY Deluxe Desktop can be combined with the F311 Side Joystick HOTAS Frame, the F321 Center Joystick Frame, or utilize the yoke + throttle quadrant option. It’s a multiple monitors flight simulator project that works with three screens. In addition, you can add a fourth smaller screen for the flight instruments. This project is one of the most versatile DIY Flight Sim projects I’ve ever created. I’m very excited to present it to you in this new mobile format.