Drone with no external propeller and flight body
Internal propeller systems in drones and aircraft generate lift and thrust, addressing damage and downdraft issues, ensuring continuous flight and noise reduction with integrated fall prevention.
Patent Information
- Application Number
- JP2024083670
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-11-19
AI Technical Summary
Conventional drones and aircraft using external propellers or rotors face issues such as damage from obstacles and dust generation during flight due to downdrafts, and malfunction risks without a fall prevention mechanism.
Drones and aircraft are designed without external propellers, utilizing fixed wings and internal propellers to generate lift and thrust, with a motor and propeller system integrated within the body.
This design allows for continuous flight despite obstacle contact, reduces noise, and enables a fall prevention mechanism through internal components.
Smart Images

Figure 2025170723000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to drones and flying vehicles that do not have exposed propellers or rotors. [Background technology]
[0002] Conventional drones and aircraft fly using the thrust of propellers or rotors attached to the outside of the aircraft, as disclosed in Patent Document 1 below. [Prior art documents] [Patent documents]
[0003] [Patent Document 1] Patent No. 6913979 [Patent Document 2] Patent No. 6888219 [Patent Document 3] Patent No. 6744615 Summary of the Invention [Problem to be solved by the invention]
[0004] The problem that this invention aims to solve is that conventional drones and aircraft fly by generating downdrafts using external propellers or rotors to gain thrust, and because the propellers and rotors are exposed to the outside, there are issues such as the propellers or rotors coming into contact with obstacles during flight, causing damage and making them unable to fly, or the downdrafts generated during takeoff and landing causing dust and other particles to fly up. [Means for solving the problem]
[0005] In order to solve the above-mentioned problems, the drones and aircraft without external propellers of the present invention do not have external propellers or rotors, but instead fly by having fixed wings and propellers that generate lift and thrust within the body. [Effects of the Invention]
[0006] By installing a drone without external propellers and fixed wings and propellers that generate lift and thrust within the main body of the aircraft, it is possible to fly without generating downdrafts externally.
[0007] Even if drones and aircraft without external propellers come into contact with an obstacle during flight, they have the advantage of being able to continue flying without impairing flight-related functions because they have mechanisms installed inside the main body that generate lift and thrust.
[0008] The motor and propeller that power it are built into the main body, which has the advantage of reducing noise to the surrounding area.
[0009] Drones and aircraft without external propellers have the advantage that if a malfunction occurs during flight, since there are no external propellers or rotors, a fall prevention device such as a parachute can be attached to the top of the body. [Brief explanation of the drawings]
[0010] [Figure 1] 1 is a schematic diagram illustrating the flight principle according to the present invention; [Figure 2] 1 is a schematic cross-sectional view of a drone and air vehicle without external propellers. [Figure 3] This is an external view of a drone and an air vehicle without external propellers. DETAILED DESCRIPTION OF THE INVENTION
[0011] The present invention will be described by way of example with reference to the drawings. As shown in Figures 1 and 2, a fixed wing 2 equivalent to a fixed-wing aircraft is horizontally fixed within the main body 1 of a drone or air vehicle without external propellers.
[0012] A propeller 4 that generates an airflow is installed in front of the fixed wing 2, and a motor 3 that controls its rotation is installed, and the airflow is made to flow horizontally over the fixed wing 2.
[0013] In the embodiment shown in Figure 2, the main body 1 of a drone or aircraft without external propellers has an intake port A for taking in airflow at the upper rear of the motor 3, and also has an exhaust port B for discharging airflow behind the fixed wing 2.
[0014] The embodiment configured as above must be arranged symmetrically like the embodiment shown in FIG.
[0015] The lift 6 generated on the fixed wing 2 increases or decreases in proportion to the speed of the airflow 5 generated by the propeller 4 whose rotation is controlled by the motor 3, causing the drone and the main body 1 of the aircraft, which has no external propellers, to float.
[0016] In addition, the airflow 5 generated from the propeller 4, whose rotation is controlled by the motor 3, generates lift on the fixed wing 2 and is then discharged from the exhaust port B, becoming thrust, and the rudder 7 allows the drone, which does not have an external propeller, and the main body 1 of the aircraft to control its direction and fly. [Industrial Applicability]
[0017] The external propeller-less drones and air vehicles of the present invention can be used in the transportation and aviation fields. [Explanation of symbols]
[0018] 1. Drones and aircraft bodies 2 fixed wing 3 motors 4 propellers 5. Airflow 6. Lift 7 rudder A Air intake B Exhaust port
Claims
1. Drones and flying vehicles that are characterized by not having any exposed propellers or rotors on the outside.
2. The drone and aircraft described in claim 1, characterized in that fixed wings are installed inside the drone and aircraft body, and propellers installed in front of the fixed wings generate airflow to generate lift on the fixed wings.
3. The drone and aircraft described in claim 1, characterized in that the fixed wings inside the drone and aircraft body are arranged vertically in multiple stages, thereby doubling the generated lift in proportion to the number of fixed wings.
Citation Information
Patent Citations
flying object
JP6744615B2
drone
JP6888219B2
drone
JP6913979B2