I created all of the concepts shown on this page. You are free to use them for whatever you want. They were originally posted on this website in the 2015-2016 time frame, unless noted otherwise. They were created using PROP_DESIGN, Rhino, and Keyshot.
Using adjustable thrust vectoring nozzles has many benefits compared to tiltrotors, helicopters, and/or quadcopters:
Below is an animation of an adjustable thrust vectoring nozzle of my own design. Four struts were used for added structural stability and strength. The struts were made using the NACA 65A009 airfoil. The struts should be placed ahead of the propeller (CFD and/or testing can be used to find the ideal distance). The ducting does not contribute to the propeller's performance. In this case, the ducting only acts to guide the air into the adjustable thrust vectoring nozzles. No static pressure is developed. Thus, tight tip clearances are not needed. The blades have the same chord as the struts. The blades use the same airfoil as the struts. The engine can be an electric motor, piston, or turboprop.
Below is a low speed surveillance drone concept. The adjustable thrust vectoring nozzles are the same ones shown above. Moreover, the yellow nozzles rotate 360 degrees. The white pods, that support the adjustable thrust vectoring nozzles, would also store batteries and/or fuel and act as the landing gear. Cameras are located in the black sphere.
Below is a high speed drone concept. It would cruise at and altitude of 32,000 ft and a speed of Mach .7. It can takeoff and land vertically. It can also hover in place. The adjustable thrust vectoring nozzles are the same as those featured previously. However, the inboard nozzles have their rotation limited to 180 degrees. Using adjustable thrust vectoring nozzles negates the need for thrust reversers. The blades, struts, and wings use the NACA 65A009 airfoil.
Below is another type of adjustable thrust vectoring nozzle concept I came up with, first posted on this website 09-26-17. Same benefits as the previous concept, however, it can be used in more ways that offer additional benefits. The previous concept creates a lot of drag. This concept can be used inside the aircraft, so no additional drag is created. The concept is also shown inside a flying wing. The ducted fan can be used in forward, reverse, up, and down. As configured in the flying wing concept, four ducted fans can be used for all flight controls. There are no flaps or anything on the wings. Pitch, roll, yaw, thrust, and reverse are all achieved using four ducted fans with adjustable thrust vectoring nozzles. The dimensions shown are in meters. It was scaled to be similar to the 747-8. However, you could make this concept to any scale or application desired. From drones, to transports, surveillance, fighter/bombers an so on.
Some details of the flying wing concept; NACA 65A009 airfoils used throughout, created in Rhino, rendered in KeyShot. This concept should easily be able to cruise at Mach .7 and 32,000 feet. Whereas, the previous concept would most likely have substantial drag issues. The flying wing can lift off and land vertically, if desired. It can also hover in place. It would be much more maneuverable than a traditional aircraft, easily being able to do amazing acrobatic maneuvers. Anything could be used to power the ducted fans; electric motors, piston engines, turbines, etc... Tip clearances in the ducts is a non-issue, as no back pressure is developed. The flying wing is not new. The first one I know of is the Ho-229. Created during WWII by the Horten brothers in Germany. Later on, Jack Northrop created numerous flying wings in the United States. There are other flying wings as well. This would be the first with this type of propulsion and control system that I am aware of.
This is a hovercar concept I have drawn by hand since I was in middle school. I modeled the concept in clay, when I was a child, to verify the perspective views. I finally got a chance to model it in CAD.
Wanting to understand how to create hovercars is what led me to getting a degree in Mechanical Engineering. I did learn how to create hovercars. Unfortunately, they are not practical for a number of reason. They do look cool, however, as evidenced by the photos below.
The concept shown uses six electric ducted fans. Four of the EDFs feed four plenum chambers. Two EDFs provide thrust and steering. The occupants face each other, one seat faces forward and one faces backward (the interior wasn't modeled). There is no trunk or engine compartment. Storage bins are located behind the seats, accessible from the interior. The wheel wells act as plenum chambers. Clear glass encloses the wheel wells, in the renderings. I envisioned these as programmable screens. Whereby you could show different colors, graphics, or animations on them. For instance, you could provide the illusion of having tires and wheels that spun as you moved. Yielding a more traditional vehicle. Or you could display fun and unique graphics that highlighted your personality or mood.
The car drives itself. In the 80s, when I first started creating this concept, self driving cars were not possible. It's nice to see that they are starting to become a reality. Another feature I envisioned was a solar powered canopy that would allow the HVAC system to keep the cabin at a comfortable temperature year round, The feature would work 24/7, regardless if the car was on or anyone was in it. Nowadays, with so many children dying in hot cars, this would be a very useful feature to have. That issue wasn't around in the 80s. It was born out of having to get into crazy hot cars in South Florida. Of course, many years later, I discovered getting into crazy cold cars was no joy either. But it would also be nice to be able to leave your groceries in the car, so you didn't have to go right home. There could be a refrigerated section and a freezer section. So you could go shopping, do other things, and get home whenever you get home. Self driving cars and solar powered 24/7 automatic HVAC would make road trips a lot more interesting too.
The inspiration for the shape of the hovercar was from the following vehicles:
If you view images of those vehicles, you can see the resemblance. I envisioned a car that was there but wasn't there. Where air moved through it more than anything else. Nowadays, there are many vehicles that have that philosophy. Their shapes are much more aerodynamic and CFD driven than my concept. But you have to remember, I originally drew this in the 80s.
Below are renderings of the fans used in the hovercar concept. Four struts were used for added structural stability and strength. The struts were made using the NACA 65A009 airfoil. The struts should be placed ahead of the propeller (CFD and/or testing can be used to find the ideal distance). The ducting does not contribute to the propeller's performance. In this case, the ducting is only needed to guide the air into the diffusers. Because static pressure is built up in the diffusers, tight tip clearances are not needed. The blades have the same chord as the struts. The blades use the same airfoil as the struts.