CN205980958U - Civilian combination powder charge of single chamber dualthrust for rocket - Google Patents
Civilian combination powder charge of single chamber dualthrust for rocket Download PDFInfo
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- CN205980958U CN205980958U CN201620853158.8U CN201620853158U CN205980958U CN 205980958 U CN205980958 U CN 205980958U CN 201620853158 U CN201620853158 U CN 201620853158U CN 205980958 U CN205980958 U CN 205980958U
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- propellant
- charge
- powder charge
- propellant charge
- dualthrust
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Abstract
The utility model relates to a civilian combination powder charge of single chamber dualthrust for rocket belongs to powder charge design field. The utility model discloses a combination powder charge comprises two sections longitudinal arrangement's being located same combustion chamber propellant grain, and the external diameter of two sections propellant grains is the same, and the length of anterior segment propellant grain is greater than the length of back end propellant grain, and the internal diameter of anterior segment propellant grain is less than the internal diameter of back end propellant grain. The utility model discloses make a powder charge realize single chamber dualthrust operating characteristic, range and precision obtain improving.
Description
Technical field
This utility model is related to a kind of mixed charge of civil rocket Design of Single-chamber, belongs to powder charge design field.
Background technology
Certain civil rocket bullet is to improve bullet precision and meet general flat pad requirement, needs to improve a speed, with
Improve flight stability；And need low thrust to work on after going out cylinder, reduce flight resistance, will to meet range and precision
Ask.Reach above-mentioned dual thrust to require, usually designing two stage motor first class engines is booster, provides relatively
High thrust；Two stage motors are sustainer motor, provide less and lasting thrust, this is accomplished by designing two sets of engine systems
Structure, and this structure is not suitable for, and range is shorter, the less some civil rockets of the useful space.
Utility model content
The purpose of this utility model is to rely on two stage motors to realize the structure discomfort of dual thrust to solve tradition
Conjunction range is short, the technical barrier of the useful space little civil rocket bullet, and provides a kind of combination of civil rocket Design of Single-chamber
Powder charge.
The purpose of this utility model is achieved through the following technical solutions：
A kind of mixed charge of civil rocket Design of Single-chamber of the present utility model, by two in same chamber
The propellant charge composition of section longitudinal arrangement, the external diameter of two sections of propellant charges is identical, and the length of leading portion propellant charge is more than
The length of back segment propellant charge, the internal diameter of leading portion propellant charge is less than the internal diameter of back segment propellant charge；Leading portion propellant
The two ends bonding covering piece of powder column, the rear end bonding covering piece of back segment propellant charge, the front end of back segment propellant charge with front
The opposite side cementation of section propellant charge rear end covering piece.
Operation principle
When rocket initialization, two kinds of size propellants burn simultaneously, and back segment propellant charge produces larger thrust,
Velocity of shot is made to increase rapidly；Leading portion propellant charge works on afterwards, provides less and lasting thrust, thus realizing sending out
The Design of Single-chamber work of motivation.
Beneficial effect
This utility model makes a powder charge achieve Design of Single-chamber operating characteristic, and range and precision are improved.Single chamber
The powder charge design of dual thrust has initial combustion face greatly, and loading density is high, design simple feature.By the rocket engine of thousands of
From the point of view of standing test and flight test result, projectile charge not only one or two grades of thrusts, one or two grades of works of designing and producing
Make time, total punching and specific impulse and spread the index request that the technical parameters such as middle deviation meet, and projectile charge work
Stable performance, good manufacturability, concordance is good, and reliability is high.Ensure that certain civil rocket bullet develops smoothly completing of task, innovation
Achieve the Design of Single-chamber of free loading propellant formula single tubular powder structure.And provide theoretical base for the research of single chamber multistagc thrust
Plinth and foundation.
Brief description
Fig. 1 is this utility model mixed charge structure chart；
In figure, 1- covering piece；2- propellant charge.
Specific embodiment
Below in conjunction with the accompanying drawings content of the present utility model is further described.
Embodiment 1：
The motor charge of certain model rocket projectile adopts charge constitution as shown in Figure 1, from two sections of double base propellant medicines
Post, the external diameter of two sections of double base propellant powder columns is 33.3mm；The internal diameter 7.3mm of leading portion double base propellant powder column, length are
65mm；The internal diameter 20mm of back segment double base propellant powder column, length are 40mm；
The two ends bonding ethylene propylene diene rubber covering piece of leading portion double base propellant powder column, after back segment double base propellant powder column
End bonding ethylene propylene diene rubber covering piece, the front end of back segment double base propellant powder column is coated with leading portion double base propellant powder column rear end
The opposite side cementation of piece.
Tested by out-of-core techniques, one-level balance thrust is 1220N at normal temperatures to record this powder charge, the one-level working time
0.15s；Two grades of balances thrust average out to 710N, secondary work time 0.20s.Achieve the technical specification of Design of Single-chamber.Should
After full bullet, closeness test meets requirement.
Embodiment 2：
Rocket projectile same as Example 1, motor charge adopts the double base propellant powder column of conventional tube charge constitution,
Powder charge external diameter is 33.3mm；Internal diameter is 7.3mm；Grain length is 105mm, and two ends adopt ethylene propylene diene rubber to coat.
Tested by out-of-core techniques, recording this powder charge and balancing thrust at normal temperatures is 1050N, working time 0.38s.Application
In full bullet, closeness test cannot meet requirement.
Claims (1)
1. a kind of mixed charge of civil rocket Design of Single-chamber, is characterized in that：Indulged by two sections in same chamber
To the propellant charge composition of arrangement, the external diameter of two sections of propellant charges is identical, and the length of leading portion propellant charge is more than back segment
The length of propellant charge, the internal diameter of leading portion propellant charge is less than the internal diameter of back segment propellant charge；Leading portion propellant charge
Two ends bonding covering piece, the rear end bonding covering piece of back segment propellant charge, the front end of back segment propellant charge and leading portion push away
Enter the opposite side cementation of agent powder column rear end covering piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620853158.8U CN205980958U (en) | 2016-08-09 | 2016-08-09 | Civilian combination powder charge of single chamber dualthrust for rocket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620853158.8U CN205980958U (en) | 2016-08-09 | 2016-08-09 | Civilian combination powder charge of single chamber dualthrust for rocket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205980958U true CN205980958U (en) | 2017-02-22 |
Family
ID=58030230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620853158.8U Active CN205980958U (en) | 2016-08-09 | 2016-08-09 | Civilian combination powder charge of single chamber dualthrust for rocket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205980958U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617160A (en) * | 2019-08-30 | 2019-12-27 | 南京理工大学 | Step type combustion chamber and inner wall of engine without spray pipe |
| CN113882969A (en) * | 2021-09-30 | 2022-01-04 | 四川航天川南火工技术有限公司 | Free-loading type single-chamber double-pushing solid small rocket structure |
-
2016
- 2016-08-09 CN CN201620853158.8U patent/CN205980958U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617160A (en) * | 2019-08-30 | 2019-12-27 | 南京理工大学 | Step type combustion chamber and inner wall of engine without spray pipe |
| CN113882969A (en) * | 2021-09-30 | 2022-01-04 | 四川航天川南火工技术有限公司 | Free-loading type single-chamber double-pushing solid small rocket structure |
| CN113882969B (en) * | 2021-09-30 | 2022-07-29 | 四川航天川南火工技术有限公司 | Free-loading type single-chamber double-pushing solid small rocket structure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |