GB/T 34305-2017 in English
VALID37 mm Anti-aircraft gun seeding mode of hail suppression operation
- Issued on:2017-09-07
- Implemented on:2018-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
| Standard No: | GB/T 34305-2017 |
| Document status: | VALID |
| Title in English: | 37 mm Anti-aircraft gun seeding mode of hail suppression operation |
| Title in Chinese: | 37mm高射炮防雹作业方式 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2017-09-07 |
| Implemented on: | 2018-04-01 |
| Professional Classification: | GB-National Standard |
| Related Keywords: | hail prevention operation methods operation
circular hail prevention area single-point operation mode approximate single-point distribution hail prevention horizontal gradient operation method approximate horizontal hail suppression operation introduction national standard high-density hail prevention area concentric circle operation mode horizontal projection presents |
| Related Topics: | anti-aircraft gun
GBT34305 GB/T 34305-2017 |
《GB/T 34305-201737mm高射炮防雹作业方式》由TC538（全国人工影响天气标准化技术委员会）归口，主管部门为中国气象局。
Introduction
National Standard of the People's Republic of China GB/T 34305-2017: Operation Method of 37mm Anti-aircraft Gun for Hail Prevention
Background and Significance of Standard Formulation
Artificial weather modification technology is an important part of modern meteorological science, and anti-aircraft guns, as the main ground operation tool, play a key role in hail prevention and disaster reduction. The formulation of GB/T 34305-2017 aims to standardize the operation method of $37~\mathrm{mm}$ anti-aircraft guns for hail prevention under different meteorological conditions to ensure the safety and effectiveness of the operation.
Actual Application Cases
For example, in many successful hail prevention operations in Shaanxi Province, the standard provided clear guidance, and achieved effective destruction of hail clouds by adjusting the shooting elevation and azimuth.
Classification and technical comparison of hail prevention operation methods
| Operation method | Distribution of bomb points | Fuse self-detonation time control | Firing elevation angle range | Applicable scenarios |
|---|---|---|---|---|
| Spherical gradient operation method | Spherical distribution centered on anti-aircraft guns | Same self-detonation time | $45^\circ$ to $85^\circ$ | Large area of hail prevention |
| Horizontal gradient operation method | Approximate horizontal curved surface distribution | Different self-detonation times at high and low elevation angles | $45^\circ$ to $85^\circ$ | Regional hail prevention needs |
| Vertical gradient operation mode | Approximate vertical curved surface distribution | Different self-detonation times at high and low elevation angles | $45^\circ$ to $85^\circ$ | High-density hail prevention area |
| Concentric circle operation mode | Horizontal projection presents concentric circle distribution | Uniform self-detonation time | $45^\circ$ to $85^\circ$ | Circular hail prevention area |
| Single-point operation mode | Approximate single-point distribution | Uniform self-destruction time | $45^\circ$ to $85^\circ$ | Precise hail prevention in a small range |
Operation requirements and implementation suggestions
The rotation speed of the steering machine and the elevation machine:Slow gear should be used to ensure the accuracy of the distribution of the bomb explosion point.
Firing elevation angle range:Should be controlled between $45^\circ$ and $85^\circ$, and the adjustment value each time should be between $2.0^\circ$ and $4.5^\circ$.
Implementation suggestions
- Choose appropriate operation methods according to meteorological conditions
- Regularly calibrate the elevation and azimuth of anti-aircraft guns
- Optimize the distribution of bombing points in combination with radar monitoring data
- Train operators to ensure standardized implementation
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