Balloon mass determination method and flat floating balloon

Abstract

This application provides a method for determining balloon weight and a horizontally drifting balloon. The method includes the following steps: conducting balloon bursting experiments of different specifications at room temperature to establish the relationship between balloon weight and room temperature bursting diameter; testing the bursting performance of the balloon at low temperature to establish the relationship between temperature and bursting diameter reduction coefficient; establishing the relationship between balloon weight and altitude based on the relationship between balloon weight and room temperature bursting diameter, and the relationship between temperature and bursting diameter reduction coefficient; and determining the balloon weight based on the established relationship between balloon weight and altitude, and setting the balloon's altitude and inflation volume. By introducing the parameter of temperature affecting the balloon's bursting diameter, a new algorithm for the relationship between balloon weight and altitude is constructed, which is more accurate than previous algorithms. This algorithm is applied to horizontally drifting balloons, providing a horizontally drifting balloon that meets operational requirements for altitude while ensuring a high success rate of inner balloon horizontal drift.

Description

Technical Field

[0001] This application relates to the field of high-altitude exploration technology, and in particular to a method for determining the mass of a balloon and a horizontally floating balloon. Background Technology

[0002] A horizontal drift balloon is a new type of meteorological balloon capable of carrying a radiosonde for upper-air meteorological exploration. It consists of an outer sphere and an inner sphere located within the outer sphere's cavity. After filling both the inner and outer spheres with appropriate buoyancy gas, the system ascends under the influence of buoyancy. The outer sphere reaches its maximum volume at a certain altitude and bursts. At this point, the buoyancy provided by the inner sphere balances the system's own weight, causing the system to drift within a small range at this altitude.

[0003] Due to the environmental differences between the ground and high altitudes, the buoyancy of a balloon at high altitudes will inevitably differ from that at ground level, and this buoyancy variable must be considered during inflation. A common practice is to preset a height, assuming the buoyancy provided by the inner balloon at that height balances the system's own weight, and then calculate the buoyancy variable between the ground and that height to obtain the buoyancy parameters of the inner balloon at the ground. Clearly, the closer the actual explosion altitude of the outer balloon is to this preset altitude, the easier it is for the inner balloon to drift horizontally. To ensure a high success rate of horizontal drift, the precision control of the outer balloon's explosion altitude is crucial. Furthermore, as a carrier for meteorological radiosonde observation, the horizontal drift balloon must meet existing meteorological operational radiosonde observation requirements; that is, the outer balloon's explosion altitude, ascent speed, and other indicators must all meet operational specifications. Generally speaking, given a fixed net lift, a larger balloon mass allows for a higher ascent altitude, but also increases the balloon's cost and consumes more buoyancy gas. Therefore, determining the mass combination of the horizontal drift balloon is of great significance in terms of horizontal drift success rate, meeting radiosonde observation requirements, and cost savings.

[0004] Current technologies primarily rely on controlling the balloon's mass and inflation volume to determine its ascent altitude, but this control is not precise enough. For example, a 750g balloon is deployed for altitudes above 28,000 meters, while a 1600g balloon is deployed for altitudes above 35,000 meters. Inflation volume control only needs to meet the ascent speed requirements. Currently, there is no precise algorithm applicable to the relationship between the mass and ascent altitude of a horizontally drifting balloon to accurately determine its mass. Summary of the Invention

[0005] This application provides a method for determining the quality of a balloon, confirming the quality of a horizontally floating balloon.

[0006] This application provides a method for determining the mass of a balloon, the method comprising the following steps:

[0007] Experiments were conducted on balloons of different sizes at room temperature, and the relationship between balloon mass and diameter at room temperature was constructed based on the experimental results.

[0008] The bursting performance of the tested balloon was tested at low temperature, and the relationship between temperature and burst diameter reduction coefficient was constructed based on the test results.

[0009] Based on the relationship between the mass of the constructed balloon and the burst diameter at room temperature, and the relationship between temperature and the burst diameter reduction coefficient, the relationship between the mass of the constructed balloon and the altitude at ascent was determined.

[0010] Obtain the set altitude and inflation volume of the balloon. Based on the relationship between the mass of the constructed balloon and the altitude, as well as the obtained set altitude and inflation volume, determine the mass of the balloon.

[0011] In the above technical solution, the parameter of temperature change on the balloon explosion diameter is introduced, and a new algorithm for the relationship between balloon mass and ascent altitude is constructed, which is more accurate than the previous algorithm.

[0012] In one specific implementation scheme, based on the test results and the relationship between the mass of the constructed balloon and its diameter at room temperature burst, a decreasing fitting curve of temperature and burst diameter is constructed; specifically:

[0013] The burst diameter reduction coefficient is obtained by dividing the burst diameter of the test balloon under different low temperature gradients by the conventional burst diameter of the test balloon.

[0014] Using temperature as the horizontal axis and the descent coefficient as the vertical axis, a fitting curve is constructed between the temperature of the test balloon and the descent coefficient of the burst diameter.

[0015] In one specific implementation scheme, testing the bursting performance of the balloon under test at low temperature specifically involves testing the bursting performance of the balloon under test using a low-temperature bursting instrument.

[0016] In a specific feasible implementation, the relationship between the balloon's mass and its burst diameter at room temperature is constructed based on the relationship between the constructed balloon's mass and the burst diameter reduction coefficient; specifically:

[0017] Construct the state equations for the balloon from the ground to high altitude;

[0018] Based on the relationships between balloon mass and burst diameter at room temperature, temperature and burst diameter descent coefficient, and the state equation of the balloon from the ground to high altitude, the relationship between balloon mass and altitude is constructed.

[0019] In one specific feasible implementation, the curve fitting formula for the fitting curve of the temperature of the tested balloon versus the burst diameter reduction coefficient is:

[0020] in It is the blasting diameter reduction coefficient. This is Celsius temperature, measured in °C. The determination coefficient R is also present. 2 The value is 0.987.

[0021] Secondly, a horizontal floating balloon is provided, which includes an outer sphere and an inner sphere nested within the cavity of the outer sphere;

[0022] Wherein, the mass of the outer sphere is the mass determined by any of the above-described methods for determining the mass of a balloon.

[0023] In one specific implementation, the mass of the outer sphere is 750-850g.

[0024] In one specific implementation, the mass of the inner sphere is 900~1100g.

[0025] In one specific implementation, the mass of the outer sphere is 600-700g.

[0026] In one specific feasible implementation, the mass of the inner ball is 750~850g.

[0027] The above technical solution introduces the parameter of temperature affecting the balloon's explosion diameter, constructs a new algorithm for the relationship between balloon mass and ascent altitude, which is more accurate than previous algorithms, and applies it to horizontal drifting balloons, providing a horizontal drifting balloon that meets operational requirements for ascent altitude while ensuring a high success rate for the inner balloon's horizontal drift. Attached Figure Description

[0028] Figure 1 A flowchart of the balloon quality determination method provided for this application;

[0029] Figure 2 The curve showing the relationship between balloon mass and burst diameter at room temperature;

[0030] Figure 3 The curve is a fitted curve of the balloon's temperature versus the coefficient of decrease in burst diameter. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this application clearer, the application will now be described in further detail with reference to the accompanying drawings.

[0032] It should be noted that, unless otherwise defined, the technical or scientific terms used in one or more embodiments of this specification should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar words used in one or more embodiments of this specification do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] refer to Figure 1 This application provides a method for determining the mass of a balloon, the method comprising the following steps:

[0034] Step 001: Conduct balloon bursting experiments of different specifications at room temperature, and construct the relationship between balloon mass and bursting diameter at room temperature based on the experimental results.

[0035] Specifically, the following method can be used to construct the relationship between balloon mass and burst diameter at room temperature:

[0036] There are many existing balloon models, with specifications including 10g, 100g, 300g, 500g, 750g, and 1600g. Popping tests were conducted on balloons of different specifications at room temperature, and their popping diameter data were recorded. The specifications of the balloons differ slightly from their actual weight, as shown in Table 1.

[0037]

[0038] With the actual mass of the balloon as the x-axis, the average burst diameter at room temperature (in terms of...) Using the unit (m) as the ordinate, construct a fitting curve of balloon mass versus room temperature burst diameter (e.g., Figure 2 (As shown). The curve fitting formula is:

[0039] Among them, the determination coefficient R 2 The value is 0.9916, indicating a good fit.

[0040] Step 002: Test the bursting performance of the balloon at low temperature, and construct the relationship between temperature and burst diameter reduction coefficient based on the test results.

[0041] During ascent, balloons are prone to crystallization and brittleness due to the low ambient temperature, resulting in a much smaller burst diameter compared to their normal ground-level burst diameter. Ignoring the impact of the high-altitude low-temperature environment on the balloon's burst diameter and calculating its ascent altitude in a low-temperature environment using the balloon's ground-level burst diameter at normal temperature is the reason why current technologies do not offer high precision in controlling the ascent altitude of individual balloons.

[0042] To study the effect of temperature on the burst diameter of a balloon, the burst performance of the balloon was tested using a cryogenic burst tester.

[0043] The burst diameter of the balloon under different low temperature gradients is divided by the conventional burst diameter of the balloon to obtain the burst diameter reduction coefficient. A fitting curve of the temperature and burst diameter reduction coefficient of the balloon is constructed with temperature as the abscissa and reduction coefficient as the ordinate.

[0044] When using a cryogenic burst tester, due to the limited size of the tester's internal cavity, a 10g ball was used for testing. The burst diameter of the 10g ball under different cryogenic gradients was measured, and divided by its conventional burst diameter, the decrease coefficient of the burst diameter under different cryogenic gradients was obtained. A temperature-burst diameter decrease coefficient fitting curve for the 10g ball was constructed with temperature as the x-axis and the decrease coefficient as the y-axis (e.g., ...). Figure 3 As shown in the figure, and applied to other balloons of the same specifications with the same formula and process. The curve fitting formula is:

[0045]

[0046] in It is the blasting diameter reduction coefficient. This is Celsius temperature, measured in °C. The determination coefficient R is also present. 2 The value is 0.987, indicating a good fit.

[0047] Assuming the balloon bursts at high altitude and low temperature, the diameter is... Then we have:

[0048]

[0049] Step 003: Based on the relationship between the constructed balloon mass and the burst diameter at room temperature, and the relationship between temperature and the burst diameter reduction coefficient, construct the relationship between the balloon mass and the ascent altitude.

[0050] Specifically, a) Construct the state equations of the balloon from the ground to high altitude;

[0051] According to the ideal gas law, assume the volume of the balloon at high altitude is... Temperature is air pressure is Then we have:

[0052]

[0053] Assume the burst diameter of the balloon at high altitude is Then we have:

[0054]

[0055] Assuming the balloon does not leak air during ascent, that is Unchanged. Let the balloon's inflation volume (measured using a spring scale after the balloon is fully inflated with hydrogen, in grams) be m, and its mass be... The density of air at ground level is The density of hydrogen gas is The volume is Then we have:

[0056]

[0057] Assuming the ground temperature is air pressure is Then we have:

[0058]

[0059] Combining formulas (4) to (7), we have:

[0060]

[0061] b) Based on the relationship between the balloon mass and the burst diameter at room temperature, the relationship between temperature and the burst diameter descent coefficient, and the state equation of the balloon from the ground to high altitude, construct the relationship between the balloon mass and the altitude.

[0062] By integrating and unifying the formulas from (1) to (8), and constructing an algorithm for the relationship between balloon mass and ascent altitude, we have:

[0063]

[0064] In the above formula, It is the density of air at ground level. The density of hydrogen gas at ground level is a known quantity; the temperature of the ground level is... air pressure is The temperature of the balloon at high altitude is air pressure is Both are altitude-related parameters in atmospheric sounding; t is the upper-level temperature. The temperature is in Celsius; m is the amount of air the balloon is inflated on the ground.

[0065] Step 004: Obtain the set altitude and inflation volume of the balloon. Based on the relationship between the mass of the constructed balloon and the altitude, as well as the obtained set altitude and inflation volume of the balloon, determine the mass of the balloon.

[0066] a) When the balloon is a regular single balloon, in formula (9) The set altitude can be determined by obtaining upper-level temperatures based on historical atmospheric observation data. High-altitude air pressure ; and due to high-altitude temperature Calculate its Celsius temperature t; ground temperature Ground air pressure Ground air density can be obtained directly during ground-based measurements. Ground hydrogen density The quantity is known; by setting the inflation volume m of the balloon, the mass of the balloon can be calculated. .

[0067] b) When the balloon is a horizontally floating balloon, the formula (9) Includes the mass of the inner sphere and the mass of the outer sphere. Due to the inherent characteristics of horizontally floating balloons (the outer balloon explodes first, and the inner balloon needs to remain intact and horizontally floating after the outer balloon explodes), the maximum volume of the inner balloon is usually larger than that of the outer balloon; that is, the inner balloon's dimensions are usually larger than the outer balloon's dimensions. Based on experience and considering cost-saving measures, it is advisable for the inner balloon to be 150-200g larger than the outer balloon.

[0068] Example 1:

[0069] If we take the inner sphere as being 200g larger than the outer sphere as an example, then equation (9) can be transformed into:

[0070] (10)

[0071] The current meteorological operational standards specify an altitude of 28,600 meters as the optimal altitude for assessment. According to the formula in the "GJB365.2-1987 Altitude-Pressure Conversion Table," the atmospheric pressure at 28,600 meters is 14.48 hPa, and the standard atmospheric pressure at ground level is 1013.24 hPa. The Pa is 1013.24 hPa. The value is 14.48 hPa. The ground temperature is normally 25℃, but according to atmospheric data, the lowest temperature at 28600 meters can reach -55℃. It is 298.15K. It is 218.15K. The temperature is -55℃. Air density. At 25℃ and standard atmospheric pressure, it is 1185 g / m³. 3 hydrogen density At 25°C and standard atmospheric pressure, it is 84 g / m³.3 In the actual deployment of the horizontal drift balloon, to ensure that the ascent speed of the horizontal drift balloon is within a suitable range, the inflation volume of each station is mostly 2000~2600g. In order to ensure that the horizontal drift balloon can still meet the ascent height requirements at the maximum inflation volume, the inflation volume m is taken as 2600g. Substituting the above parameters into formula (10), the outer sphere mass of the horizontal drift balloon is calculated to be 800g, and the inner sphere mass is 1000g. That is, in order to make the outer sphere of the horizontal drift balloon reach the excellent test height of 28600 meters and meet the ascent speed requirements, while ensuring the success rate of the horizontal drift of the inner sphere, the combination of the horizontal drift balloon is an outer sphere mass of about 800g and an inner sphere mass of about 1000g.

[0072] Because the balloons are produced using ion deposition, individual balloons will still vary in quality even with the same impregnation time. Therefore, the weight of the balloons is usually limited to a range. The above-mentioned combination of horizontally floating balloons is limited to: outer balloon weight 750g~850g, inner balloon weight 900g~1100g.

[0073] Balloons of different weights have different lengths, and their length varies with weight to ensure they meet performance requirements. Based on actual balloon production, a balloon weighing around 800g requires a length of 2100-2500mm to meet performance requirements, while a balloon weighing around 1000g requires a length of 2250-2750mm.

[0074] Example 2:

[0075] If we take the inner sphere as being 150g larger than the outer sphere as an example, then equation (9) can be transformed into:

[0076] (11)

[0077] The current meteorological operational standards specify a qualified altitude of 26,000 meters. However, to ensure the compliance rate of horizontal drift balloons at their launch altitude, a certain margin is required. Therefore, the mass calculation for horizontal drift balloons is based on an altitude of 27,000 meters. According to the formula in the "Altitude-Pressure Conversion Table" (GJB365.2-1987), the atmospheric pressure at 27,000 meters is 18.47 hPa, and the standard atmospheric pressure at ground level is 1013.24 hPa. The Pa is 1013.24 hPa. The value is 18.47 hPa. The surface temperature is normally 25℃, but according to atmospheric data, the lowest temperature at 27,000 meters can reach -57℃. It is 298.15K. It is 216.15K. The temperature is -57℃. Air density. At 25℃ and standard atmospheric pressure, it is 1185 g / m³. 3 hydrogen density At 25°C and standard atmospheric pressure, it is 84 g / m³. 3 As above, the inflation volume m is taken as 2600g. Substituting the above parameters into formula (11), the outer sphere mass of the horizontal drifting balloon is calculated to be 650g, and the inner sphere mass is 800g. That is, in order to ensure that the outer sphere of the horizontal drifting balloon meets the mandatory requirement of a launch altitude of 26,000 meters, and at the same time ensures the success rate of horizontal drifting of the inner sphere, the combination of the horizontal drifting balloon is an outer sphere mass of about 650g and an inner sphere mass of about 800g.

[0078] Because the balloons are produced using ion deposition, individual balloons will still vary in quality even with the same impregnation time. Therefore, the weight of the balloons is usually limited to a range. The above-mentioned combination of horizontally floating balloons is limited to: outer balloon weight 600g~700g, inner balloon weight 750g~850g.

[0079] Based on actual balloon production, to make a balloon weighing around 650g meet the performance requirements, its length should be 1950~2250mm; to make a balloon weighing around 800g meet the performance requirements, its length should be 2100~2500mm.

[0080] As can be seen from the above description, the balloon mass determination method provided in this application introduces the parameter of temperature change on the balloon explosion diameter, constructs a new algorithm for the relationship between balloon mass and ascent height, which is more accurate than previous algorithms, and applies it to horizontal drifting balloons, providing a horizontal drifting balloon that meets business indicator requirements at the ascent height while ensuring the success rate of horizontal drifting of the inner balloon.

[0081] This application embodiment also provides a horizontal floating balloon, which includes an outer sphere and an inner sphere nested within the cavity of the outer sphere;

[0082] The mass of the outer sphere is the mass determined according to any of the above methods for determining the mass of a balloon.

[0083] The above technical solution introduces the parameter of temperature affecting the balloon's explosion diameter, constructs a new algorithm for the relationship between balloon mass and ascent altitude, which is more accurate than previous algorithms, and applies it to horizontal drifting balloons, providing a horizontal drifting balloon that meets operational requirements for ascent speed while ensuring the success rate of the inner balloon's horizontal drift.

[0084] For example, the outer sphere has a mass of 750-850g, and the inner sphere has a mass of 900-1100g. The outer sphere has a length of 2100-2500mm, and the inner sphere has a length of 2250-2750mm.

[0085] Alternatively, the outer sphere has a mass of 600-700g, and the inner sphere has a mass of 750-850g. The outer sphere has a length of 1950-2250mm, and the inner sphere has a length of 2100-2500mm.

[0086] To facilitate understanding of the effect of the flat-floating balloons provided in the embodiments of this application, a batch of the above-mentioned double-layer flat-floating balloon combinations (outer balloon mass 750g~850g, inner balloon mass 900g~1100g; and outer balloon mass 600~700g, inner balloon mass 750~850g) were produced and released at stations in Changsha, Anqing, Yichang, Nanchang, Ganzhou and other places, with an inflation volume of 2000g~2600g. The specific results are shown in Tables 2 and 3.

[0087] Table 2. Statistics on the release of horizontally drifting balloons with an outer sphere mass of 750g~850g and an inner sphere mass of 900g~1100g.

[0088]

[0089] Table 2 shows the launch results at each station. For all horizontally drifting balloon combinations, the outer balloon mass was in the range of 750g~850g, the inner balloon mass was in the range of 900g~1100g, the inflation volume was in the range of 2000~2600g, the average outer balloon burst height was 28908m, and the average ascent speed was 329m / min, which met the excellent performance requirements of the 28600m assessment. The difference between the outer balloon burst height and the preset height of 28600m was mostly within 1000m, with an average difference of 482m, indicating that the control accuracy of the outer balloon height of the horizontally drifting balloons was high.

[0090] Table 3. Statistics on the release of combined horizontally drifting balloons with an outer sphere mass of 600g~700g and an inner sphere mass of 750g~850g.

[0091]

[0092] Table 3 shows the launch results at each station. For all horizontally drifting balloon combinations, the outer balloon mass was in the range of 600g-700g, the inner balloon mass was in the range of 750g-850g, the inflation volume was in the range of 2000-2600g, the average outer balloon burst height was 26810m, and the average ascent speed was 372m / min, which met the 26000m qualification index requirements. The difference between the outer balloon burst height and the preset calculated height of 27000m was mostly within 1000m, with an average difference of 536m, indicating that the control accuracy of the outer balloon height of the horizontally drifting balloons was relatively high.

[0093] As can be seen from the above description, this invention introduces the parameter of temperature change on the balloon's burst diameter, constructs a new algorithm for the relationship between balloon mass and ascent altitude, which is more accurate than previous algorithms, and applies it to horizontal drifting balloons. It determines a horizontal drifting balloon that can reach an excellent operational assessment altitude of 28,600 meters and a qualified operational assessment altitude of 26,000 meters, with both ascent rates meeting operational requirements, while ensuring the success rate of horizontal drifting of the inner balloon.

[0094] This combination of horizontally drifting balloons ensures that the outer balloon's ascent altitude and speed meet the operational detection requirements of the ascent phase. Furthermore, because the outer balloon's explosion altitude matches the preset altitude, the success rate of the inner balloon's horizontal drift is guaranteed.

[0095] One or more embodiments of this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments of this specification should be included within the scope of protection of this disclosure.

[0096] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method of determining the mass of a balloon, characterized by, Includes the following steps: Experiments were conducted on balloons of different sizes at room temperature, and the relationship between balloon mass and diameter at room temperature was constructed based on the experimental results. The bursting performance of the tested balloon was tested at low temperature, and the relationship between temperature and burst diameter reduction coefficient was constructed based on the test results. Based on the relationship between the mass of the constructed balloon and the burst diameter at room temperature, and the relationship between temperature and the burst diameter reduction coefficient, the relationship between the mass of the constructed balloon and the altitude at ascent was determined. Obtain the set altitude and inflation volume of the balloon. Based on the relationship between the mass of the constructed balloon and the altitude, as well as the obtained set altitude and inflation volume, determine the mass of the balloon.

2. The balloon mass determination method of claim 1, wherein, The relationship between temperature and the blast diameter reduction coefficient is constructed based on the test results; specifically: The burst diameter reduction coefficient is obtained by dividing the burst diameter of the balloon under different low temperature gradients by the conventional burst diameter of the balloon under test. Using temperature as the horizontal axis and the descent coefficient as the vertical axis, a fitting curve is constructed between the temperature of the tested balloon and the descent coefficient of the burst diameter.

3. The method for determining balloon mass according to claim 2, characterized in that, The process of testing the bursting performance of the balloon under test at low temperature specifically involves testing the bursting performance of the balloon under test using a low-temperature bursting instrument.

4. The method for determining balloon mass according to claim 2, characterized in that, The relationship between balloon mass and altitude is constructed based on the relationship between balloon mass and burst diameter at room temperature, and the relationship between temperature and the burst diameter reduction coefficient; specifically: Construct the state equations for the balloon from the ground to high altitude; Based on the relationships between balloon mass and burst diameter at room temperature, temperature and burst diameter descent coefficient, and the state equation of the balloon from the ground to high altitude, the relationship between balloon mass and altitude is constructed.

5. The method for determining balloon mass according to any one of claims 1 to 4, characterized in that, The curve fitting formula for the fitting curve of the temperature and burst diameter reduction coefficient of the tested balloon is: in It is the blasting diameter reduction coefficient. It is Celsius temperature, in °C, where the coefficient of determination R is... 2 The value is 0.

987.

6. A type of horizontally floating balloon, characterized in that, The horizontal floating balloon includes an outer sphere and an inner sphere nested within the cavity of the outer sphere; Wherein, the mass of the outer sphere is the mass determined according to the balloon mass determination method according to any one of claims 1 to 5.

7. The horizontally floating balloon according to claim 6, characterized in that, The mass of the outer sphere is 750~850g.

8. The horizontally floating balloon according to claim 7, characterized in that, The mass of the inner sphere is 900~1100g.

9. The horizontally floating balloon according to claim 6, characterized in that, The mass of the outer sphere is 600~700g.

10. The horizontally floating balloon according to claim 9, characterized in that, The mass of the inner sphere is 750~850g.

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