CN117198114A - Aerodynamic simulation flight device - Google Patents

Abstract

The invention discloses a device for simulating real flight by utilizing aerodynamic force, which comprises: the aircraft is used for carrying simulated flight personnel; and one or more fans having air outlets directed proximate to the windward region of the aircraft. Optionally, an air supply bracket is also included, an aircraft bracket for suspending the aircraft from the ground.

Description

Aerodynamic simulation flight device

Technical Field

The invention relates to simulated flight equipment, in particular to equipment for simulating real flight experience and training of an aircraft on the ground by using real aerodynamic force.

Background

In the field of simulated flight, most of the existing simulated flight devices utilize acoustic, optical and electrical devices and motion sensing posture changing devices to provide simulated flight personnel with a feeling similar to that of flying in the air. This does not provide a true aerodynamic environment, and does not allow a person to fully truly experience and train the maneuvering of an aircraft in air on the ground. However, the flight experience and training requires that the aircraft on which the experimenter and the trainer are riding in a true aerodynamic environment, preferably achieve a "hover" state, to feel and practice the true maneuver of the aircraft. For safety, this suspension is preferably carried out at a location where the ground is very low.

The aerodynamic simulation of flight in the prior art is basically carried out in a wind tunnel. In order for an aircraft to "fly", i.e., hover, in a wind tunnel, it is desirable to provide sufficient lift to the aircraft. Wind tunnels therefore need to have a powerful power to provide sufficient wind power, which is often only available in special situations of aeronautical design, military, scientific research, etc. This is an obstacle that restricts the wide application of aerodynamic simulated flight in the general civilian field.

The wind tunnel provides wind over its entire cross-section, typically circular, i.e. the wind is substantially evenly distributed over its entire cross-section. In practice, from the windward cross section, what is really needed is the windward area of the aircraft, usually the area of the two wings, which is much smaller than the wind tunnel cross section +.! Therefore, the wind tunnel of the prior art simulates flying, and in fact causes a substantial portion of the wind to be wasted, although such waste is necessary. It is this necessity that has prevented the search for aerodynamic simulated flight devices that are more wind-powered, i.e., less costly, and thus no further improvement has been made to date.

Fig. 1a shows a front projection view of the windward region of several aircraft suspended in the wind tunnel, and fig. 1b shows a top view of these several aircraft from top to bottom, corresponding to fig. 1a, for aiding in the understanding of the front view of fig. 1 a.

As shown, in the wind tunnel, the wind receiving area 110 of the glider on the windward section, the wind receiving area 120 of the glider on the windward section (i.e. the parachute wing) and the wind receiving area 130 of the glider on the windward section are all very wide and very flat strips. The windward region of the glider is especially wide, and a common wind tunnel cannot be accommodated, so that the windward region is especially reduced and displayed in the figure, and the proportion of the windward region is different from that of the glider wings and the gliders with the same frame, and only the relative size of the windward region and the wind tunnel section is displayed.

Almost all of the aircraft's windward area occupies only a small portion of the circular cross-sectional area 100 of the wind tunnel, and the remaining majority of the cross-sectional area's wind is not directly used to cause the aircraft to generate lift.

In addition, the cylindrical passage wall of the wind tunnel needs to be made larger than the aircraft, and also requires high costs.

At present, no simulation flight equipment widely applicable to common civil environments exists, and the simulation flight equipment can provide a real aerodynamic environment with a cost which is greatly lower than that of a wind tunnel, so that an aircraft can safely simulate flight and even reach a suspension state on the ground at an extremely low height, and people can safely and truly experience the flight.

It would be of great value if a common residential aerodynamic simulated flying device could be provided at a low manufacturing and operating cost. Even if the fan power is not sufficient to suspend the aircraft along with the simulated flight crew, it is valuable to suspend the aircraft itself (without the simulated flight crew) for ground handling training (wing, parachute).

Disclosure of Invention

The invention provides an aerodynamic simulated flight device comprising: the aircraft is used for carrying simulated flight personnel; one or more fans having air outlets directed proximate to the air-receiving region of the aircraft.

The aerodynamic simulation flight device according to the present invention may further comprise: and the air supply bracket is used for installing the fan or an air pipe connected with the fan, so that an air outlet of the fan or an air outlet which is extended and distributed through the air pipe is obliquely upwards aligned to an air receiving area of the aircraft.

The aerodynamic simulated flight device according to the present invention may further comprise: and the aircraft bracket is used for suspending the aircraft.

According to the aerodynamic simulated flight device of the present invention, the air supply bracket and the aircraft bracket may be formed as one body.

According to the aerodynamic simulation flight device of the invention, the plurality of fans, or the one or more fans, are arranged on two or more horizontal layers in an extended distribution.

The aerodynamic simulated flight device according to the present invention may further comprise: running device for personnel to simulate running and take off on site. The running device can further comprise a brake device for preventing the running device from unnecessarily sliding, and can further comprise an operation speed signal acquisition device for controlling the gradient of the running device and/or controlling the wind power of the fan.

The aerodynamic simulated flight device according to the present invention may further comprise: and the video display equipment is used for being watched by the simulated flight personnel.

According to the technical scheme, the real aerodynamic levitation experience which cannot be provided by the existing simulated flight equipment or the equipment for ground control training of the aircraft are provided at low cost.

Drawings

The invention may be better understood by referring to the following description in conjunction with the accompanying drawings in which like or similar reference numerals are used to indicate like or similar elements throughout the several views.

FIG. 1a is a front view of a windward region of several aircraft, including a glider, a paraglider, and a glider, suspended in a wind tunnel;

fig. 1b is a plan view of several aircraft, corresponding to fig. 1a, suspended in a wind tunnel, of a glider, a paraglider;

FIG. 2a is a schematic diagram of one embodiment of the aerodynamic simulated flight device of the present invention wherein an aircraft employs glide wings suspended below a cantilevered aircraft support, with a plurality of fans mounted on two directly-landed "floor-standing" air supply supports;

FIG. 2b is a schematic view of another embodiment of the aerodynamic simulated flight device of the present invention wherein an aircraft employing glide wings is suspended below a cantilevered aircraft support, and a blower is branched and extended by ducts and then split into multiple outlets mounted on two directly-landed "floor" air supply supports;

FIG. 3 is a schematic view of one embodiment of a gantry of the aerodynamic simulated flying device of the present invention in which two "inverted" air delivery brackets are mounted inverted under a gantry header structure;

FIG. 4 is a schematic view of another embodiment of a gantry of the aerodynamic simulated flying device of the present invention wherein two air moving brackets are mounted upside down under the gantry roof beam structure and a glide wing is also suspended under the gantry roof beam structure;

FIG. 5 is a schematic view of yet another embodiment of the aerodynamic simulated flying device of the present invention wherein a hangar that opens back and forth to form an air duct is used to both mount an air supply rack and to suspend an aircraft;

fig. 6 is a front view of another embodiment of the aerodynamic simulated flight device of the present invention wherein the aircraft employs a paraglider, a hangar with front and rear doors forming an air duct is used as a portal frame, and an air supply bracket is mounted upside down under the roof beam structure of the hangar.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

As previously mentioned, most of the wind forces in the wind tunnels of the prior art are wasted and the dedicated tunnel walls are costly, so it would be advantageous to provide wind forces only in the windward areas of the aircraft and to remove the dedicated tunnel walls. Because the wind force will decay rapidly with distance from the air outlet after the wind tunnel wall is removed, it is also advantageous to bring the wind source, i.e. the wind turbine, into close proximity to the windward region of the aircraft.

Therefore, the aerodynamic simulation flying device provided by the invention at least comprises: the aircraft is used for carrying personnel to carry out simulated flight; and the air outlets of the one or more fans are close to the air-receiving area of the aligned aircraft.

An aircraft:

the aeronautical field of aircraft comprises a glider (also called an unpowered delta wing), a glider and the like, the stall speed of which is low, the required wind speed for suspension is low, and the aeronautical field of aircraft is suitable for being used as a low-cost ground simulation aircraft using aerodynamic suspension. Embodiments of the present invention are described below with reference to an aeronautical vehicle. It will be appreciated that other suitable aircraft may be employed.

Fan and optional air supply support:

as shown in fig. 1a, the orthographic projections of the windward regions of the aircraft are all substantially elongated. In order to reduce the wind power required for suspending the aircraft, considering that wind power is only provided in close proximity in the windward region of the aircraft, the total power required for the fans is much smaller, and the wind tunnel wall is not required for gathering wind. Therefore, the technical scheme of the invention aims at the windward area of the aircraft to arrange the air outlets of the fans in rows, so that the total power of the required fans is reduced. If wind power is provided by a plurality of fans in a scattered manner, the power required by each fan is smaller, so that the common civil fan can be adopted.

The air outlets of the fans can be arranged to be directly close to the air-receiving area of the aligned aircraft, but in order to adapt to the heights of the air-receiving areas of different aircrafts and facilitate on-site transportation, installation and arrangement, an air supply bracket can be added, the fans are arranged on one air supply bracket, or the air outlets of the fans extending through the air pipes are arranged on the air supply bracket, and the fans are arranged on the ground or other positions.

In the embodiment shown in fig. 2a, the aircraft uses the glide wings 11, the personnel 5 carries out simulated flight, and the fans 21 are respectively mounted on two air supply brackets 22 in rows, so that the fans 21, more specifically the air outlets of the fans, are close to the air receiving area of the aircraft, and preferably the two-wing air supply which is directed obliquely upwards to the glide wings 11.

Fig. 2b shows another embodiment, instead of directly making multiple fans close to the aligned glide wing 11, only one fan 21 with higher power is used to connect the air duct 25, and the air outlets thereof are extended and branched, and distributed into multiple air outlets 251 obliquely close to both wings of the aligned glide wing 11. It can be understood that the plurality of air outlets 251 distributed along the two wings in the figure may be connected into two elongated air outlets, and even two elongated air outlets may be connected into one body to form one elongated air outlet. The fan 21 can be farther away from the personnel through the arrangement that the air pipe extends out of the air opening, and the noise is smaller. It will be appreciated that instead of using one fan with a higher power to connect the ductwork, two or more fans with a lower power may be used in a distributed fashion.

The height and position of the air supply bracket 22 are set as follows: the air outlets of the fans 21 or the air outlets 251 of one or more fans are extended and distributed to be close to the front edges of the two wings of the glider as much as possible, so as to reduce the attenuation before the wind reaches the windward region. However, if too close, the aircraft is prone to crashing forward against the fan or rack, causing concern to the simulated flight crew.

The mounting of the blower bracket with the gantry shown in fig. 3, wherein the gantry 23 is illustrated with a simple thick black line, may help to reduce the above concerns. Unlike the "floor" air moving rack 22 shown in fig. 2a, 2b, which is directly landed, the "inverted" air moving rack 22 in fig. 3 is mounted inverted under the top beam structure 231 of the gantry 23. In this way, in order to support the fan at a certain height so as to be aligned with the components of the windward region of the aircraft, the two side supports of the portal frame are changed from at least four supports of the floor-standing bracket, the space near the ground in the middle of the portal frame is free from barriers, and the barriers in the field of view of personnel are reduced.

The building shown in fig. 5, such as the hangar 32, replaces the portal frame, and the two air supply brackets 22 and the plurality of fans 21 are mounted under the top structure 321 of the hangar 32 in an inverted manner, so that the obstacles on the ground in the field of view of the personnel are reduced, and people feel more confident.

The building is preferably a hangar 32 that can be opened back and forth to form an air duct as shown in fig. 5. It will be appreciated that even with the embodiment shown in figures 2a, 2b, 3, 4, i.e. with the hangar 32 but not for mounting a blower bracket or suspending an aircraft, it is advantageous to implement the invention only in a building such as a hangar forming a ventilation duct. Because the existing building is lower in cost than the wind tunnel, the ventilating duct also plays a role of the wind tunnel to a certain extent. In addition, the simulated flight can be carried out in adverse weather such as rain, snow, hail and the like.

In the embodiment shown in the drawings of the present disclosure, the plurality of fans 21 or the plurality of air outlets 251 extending from one or more fans are divided into two groups, and are respectively mounted on two air supply brackets 22 in a row, and are close to the two wings aligned with the glider wings 11. Because the two air supply brackets are divided, the device is convenient to adapt to the sweepback angles of different aircrafts, provides better lifting force, and is also convenient to manufacture, install, detach and transport.

It will be appreciated that although the plurality of fans or the air outlets 251 extending and distributed in the drawing are installed on the same horizontal layer, one layer of fans or air outlets may be added at a slightly higher height on the air supply bracket, so that the aircraft has more vertical lifting space during simulated flight.

Preferably, the two air supply brackets 22 are respectively arranged substantially parallel to the two wing front edges 111 of the glider wing 11, so that each fan 21 or the air outlet 251 is equally close to the two wings of the glider wing 11. Because the front edges 111 of the two wings of the glider have a certain sweepback angle, the two I-shaped brackets are arranged in an eight shape on the ground.

In the embodiment of the aircraft using the paraglider, the position of the inflated paraglider wing is much higher than that of a person, and if the blower is to be arranged along the windward region of the paraglider, the air supply bracket also needs to have a corresponding height which is much higher than that of the paraglider wing (not shown). Therefore, for paragliders, it is preferable to install a blower bracket using a building-hangar 32 like that shown in fig. 5, as shown in fig. 6. It will be appreciated that for paragliders, the "floor-standing" air-supply support shown in figures 2a, 2b may be used, except that the support needs to be made higher or to be made up-down to accommodate different aircraft airfoil heights.

As shown in fig. 6, the air delivery bracket 22 is mounted upside down below the roof structure 321 within the hangar 32. In order to align the air outlets of one or more fans along the windward region of the paraglider 12, that is, to align the front edge of the circular-arc-shaped paraglider wing after the paraglider wing is inflated and formed by the paraglider 12, the two air-supplying brackets 22 may be arranged to be in a splayed shape on the vertical plane, and have a certain radian and are aligned with the front edges 121 of the left and right sections of paraglider wings respectively.

It will be appreciated that, if viewed from a top view (not shown) corresponding to the embodiment of fig. 6, a straight line formed by the two air-sending brackets 22 is also parallel to a straight line formed by the two wing front edges 121 of the inflated and formed wing of the paraglider 12.

It should be understood that although the blower bracket 22 shown in fig. 6 is circular, for simplicity of manufacture, a straight shape may be used, and the two wing front edges 121 of the paraglider 12 may be aligned approximately.

It will be appreciated that although fig. 6 does not show an embodiment in which fans extend through the air duct to distribute the air outlets for the paraglider, it is obvious that this solution may also be adopted.

For the embodiment of the aircraft using glider, the sweepback angle formed by the front edges 131 of the two wings is approximately 0 degree as shown in fig. 1b, the air outlets of the fans can be all arranged on one air supply bracket in a straight line, or the two air supply brackets are arranged in a straight line, so that no included angle (not shown) is formed. It will be appreciated that the present invention may be practiced with one, two, or more blower brackets.

Different from a common wind tunnel, the air outlet of the fan can be arranged to have an inclined elevation angle, so that the air supply direction is inclined upwards to simulate the inclined upward blowing power air flow of a windward hillside, and more lifting force can be provided with the same power, and the aircraft is easier to suspend.

The total power of the fan 21 arranged as above is smaller than the total power of the fan required in the wind tunnel, so that the energy consumption is reduced, the cost is low, and the wind tunnel is more suitable for common civilian use.

Optional aircraft stand:

because the glider can be carried by a person, the glider can be blown up by wind and the landing is very light, the ultra-light aircraft can simulate flying, and the bracket for suspending the aircraft is not necessary but optional. Before the fan is started, the glider (and some ultra-light gliders) is carried on the body of a person, and the glider is on the ground behind the body of the person; when the fan is started, the glider or the glider is firstly suspended along with the increase of wind power, and then the personnel are suspended along with the glider or the glider along with the further increase of wind power; when the fan is stopped, or when a person is not well operated and does not have enough lift force for the glider or the glider, the person can land on the ground at any time, so that the whole glider or the hanging bag of the glider is not necessarily hung by the aircraft bracket.

However, in order to make the people experienced by the general public feel safe, not to be blown over and fall hurt by wind during the simulated flight, and also to facilitate the display of the aircraft, a suspension device, such as the aircraft support 31 shown in fig. 2a and 2b, may be added for suspending the aircraft (glider 11) and the carried person (if any), so that they remain suspended from the ground even without wind, and thus will not fall to the ground even if mishandled and the blower is stopped. Since the paraglider is soft and unshaped, the paraglider itself is not suspended, and the bag and the occupant are suspended under the carrier 31 as shown in fig. 6.

For a glider which is relatively heavy and cannot be carried by a person, a suspension device is preferable to suspend the glider off the ground, otherwise, the switching from the landing state to the suspension state is not easy to realize, and conversely, the switching from the suspension state to the landing state can face the problem of falling damage. For example, the cantilever aircraft carrier 31 shown in fig. 2a, 2b with post-mounted struts can be used to avoid collision of the two struts of the carrier with the wings of the glider with a generally small sweepback angle.

It will be appreciated that the aircraft carrier may take other forms than cantilever, such as a gantry, or even a gantry formed by a hangar.

In embodiments employing a gantry or hangar mounted blower bracket, the aircraft bracket 31 may also be integrally formed with the gantry 23 or hangar 32, i.e., both the blower bracket and blower are mounted under the roof beam structure 231 of the gantry 23 or the roof structure 321 of the hangar 32, as shown in fig. 4 and 5.

Fig. 4 shows an embodiment in which both the air supply rack and its fans are mounted with a portal frame, and the glide wings are suspended, wherein the portal frame 23 is illustrated with a simple thick black line. The upright posts of the portal frame 23 are positioned at the left and right sides, an air supply bracket 22 and a hanging gliding wing 11 are respectively hung in front of and behind a top beam structure 231 of the portal frame 23 in a reverse manner, and a plurality of fans 21 (or air outlets and an air pipe scheme) are arranged on the air supply bracket 22.

It will be appreciated that the air supply rack 22 may be mounted without inverted hanging, and still be mounted in a floor-mounted manner similar to that of figures 2a, 2b, as a "floor-mounted" rack connected to the gantry, which merely serves as a rack for suspending the aircraft.

Fig. 4 shows an unmanned state, in which the glide wing 11 naturally hangs, and has a certain height from the ground, the hanging rope 301 suspending the glide wing 11 is in a straightened state, and the front edges of the two wings are lower than the height of the blower 21. While simulating flight, a person will carry the glide wing 11 so that the glide wing 11 is lifted slightly, the lifting rope 301 will soften and bend, and the front edges of the two wings are just close to the alignment fan 21. At this time, the blower 21 is started to supply air, and the glider 11 starts to suspend, even with the personnel. It will be appreciated that the air supply bracket 22 and its fan 21, as well as the glide wing, may be mounted between the left and right side uprights of the gantry 23 in a fixed 90 degree rotation together.

If the front end and the rear end of the hangar can be opened to form an air channel so as to gather and utilize natural wind, the hangar is more beneficial. In the embodiment shown in fig. 5, the aircraft is suspended from the roof structure 321 of the hangar 32 in the hangar 32 where the door can be opened at both the front and rear ends to form an air duct. The air supply stand 22 is also mounted upside down below the top structure 321 of the hangar 32. In the figure, the glide wing 11 is shown naturally hanging in a windless state, and has a certain height from the ground, the hanging rope 301 suspending the glide wing 11 is in a straightened state, and the front edges of the two wings are lower than the height of the fan outlet. When the simulation flies, a person carries the glide wing 11, so that the height of the glide wing 11 is lifted slightly, the front edges of the two wings are just close to the outlet of the alignment fan, the fan 21 is started to supply air at the moment, and the glide wing 11 starts to suspend and even suspends the person together.

It will be appreciated that other buildings than hangars may be used, provided that the aircraft is accommodated and suspended, and that it is advantageous if the front and rear ends can be opened to form a passageway. Instead of the top structure 321, the blower bracket 22 may be mounted using a gantry 23 as shown in fig. 3.

It will be appreciated that in such a hangar 32, an aircraft carrier 31 as shown in fig. 2a, 2b may be added, the aircraft not being suspended under the roof structure 321, but under the aircraft carrier 31, and still be able to perform simulated flight.

In a windless condition in which the wind turbine is not activated, as shown in fig. 5, for example, the glider 11 is not suspended and the lifting rope 301 straightens the weight of the suspended glider. The height of the aircraft carrier 31 and the length of the lifting rope 301 are set to ensure that: the suspended glider is slightly above ground and reserves a certain lifting space, and is relatively higher when suspended than when not suspended, but does not touch the top of the aircraft carrier (the aircraft carrier is used for the hangar roof beam structure in the embodiment shown in fig. 5). This can guarantee that even when aircraft control fails to drop also can not touch ground, can not touch the top when the suspension rises yet, is safe unsettled.

When the blower 21 is started, the glider 11 itself floats up (not shown), and at this time, the hanging rope 302 of the bag worn by the person 5 is straightened by the weight of the person 5, and the hanging rope 301 suspending the glider 11 under the aircraft frame 31 is in a soft and curved state due to the suspension of the glider. When the wind speed of the fan 21 is sufficient, the glide wings 11 can suspend the person 5, as shown in fig. 2a, 2b, with both feet of the person 5 leaving the ground.

Optional running device:

in order to provide running-up and take-off experience and training similar to that of a glider, a paraglider and an ultra-light glider, a running device 4 similar to a running machine can be additionally arranged and placed under an aircraft for simulating in-situ running up of flight personnel, as shown in fig. 2a and 2 b. Unlike a treadmill, the running device 4 does not provide power, does not move on its own, but rather passively rotates when simulating the running of a flight person. When the simulation flies, a simulation flight person starts running and drives the crawler belt or the roller on the running device 4 to rotate, so that a hillside-like running experience is provided.

The running device 4 can be provided with a sensor for sensing the rotation speed of the caterpillar or the roller, so that the running speed signal is transmitted to the air supply device to increase or decrease the wind power, the signal can also be used for adjusting the self gradient of the running device, and the gradient is increased when the running speed is accelerated so as to provide a more real mountain slope running-up simulation effect.

The running device 4 can be further provided with a brake device, and when the simulated flight personnel are not ready or fall to the ground, the brake device can be kept in a brake state so as to prevent the crawler of the running device from unnecessarily sliding, and people cannot stand stably. When the person is ready to start running, the brake can be released, so that the running steps of the person drive the crawler to run.

An optional video display device:

in order to provide better visual perception, a video display device (not shown) such as a large screen and virtual reality glasses can be arranged to play three-dimensional video of the air vision field for the simulation flight personnel to watch. The playing of the video can be controlled by a speed signal transmitted by the running device and the control action of personnel (a sensor is added).

Claims (9)

1. An aerodynamic simulated flight device comprising:

the aircraft is used for carrying simulated flight personnel; and

one or more fans having air outlets directed proximate to the air-receiving region of the aircraft.

2. The aerodynamic simulated flying device of claim 1, further comprising,

and the air supply bracket is used for installing the fan or an air pipe connected with the fan, so that an air outlet of the fan or an air outlet which is extended and distributed through the air pipe is obliquely upwards aligned to an air receiving area of the aircraft.

3. The aerodynamic simulated flying device of claim 2, further comprising,

and the aircraft bracket is used for suspending the aircraft.

4. The aerodynamic simulated flying device of claim 3, wherein,

the air supply bracket and the aircraft bracket are formed into a whole.

5. The aerodynamic simulated flight device of claim 2 wherein,

the plurality of fans or the one or more air outlets which are distributed in an extending way are arranged on two or more horizontal layers.

6. The aerodynamic simulated flying device of claim 1, further comprising,

running device for personnel to simulate running and take off on site.

7. The aerodynamic simulated flying device of claim 6, wherein,

the running device further comprises a brake device for preventing the running device from unnecessarily sliding.

8. The aerodynamic simulated flying device of claim 6, wherein,

the running device further comprises an operation speed signal acquisition device which is used for controlling the gradient of the running device and/or controlling the wind power of the fan.

9. The aerodynamic simulated flying device of claim 1, further comprising,

and the video display equipment is used for being watched by the simulated flight personnel.