The reason why the 107mm rocket can maintain a high accuracy without a barrel is because it uses a more advanced turborocket engine than the early rocket artillery, and the high speed of flight greatly improves the stability of the trajectory, coupled with the perfect design of the tail, so that the 107mm rocket even if it is launched without a barrel, the accuracy is outrageously high, if it is combined with a special parameter comparison table, the 107mm rocket can hit a target 4 kilometers away without a barrel, and the deviation is only 2-3 meters, if the gunner is experiencedThe error can even be reduced to within 1 meter. Moreover, the weight of the 107mm rocket is moderate, and the weight of a single shot of 18.8 kg allows any adult man to carry it alone through any non-natural terrain, which is simply designed for guerrilla warfare

Even if the whole artillery is used, the 107mm rocket launcher is also an excellent front-line support artillery, but the weight of more than 600 kilograms, so that it can be easily dragged by mules and horses, if on flat terrain, it is two soldiers can push forward quickly, it is easy to split and make it have the ability to pass through most of the harsh terrain, mobility even exceeds 75mm mountain artillery, and its small size and low shape, and it is very easy to hide, which is very easy for the Red Army under great pressure on air defense, It's almost like it's tailor-made.

However, the 107mm rocket artillery also has a big drawback, that is, the turborocket engine of the 107mm rocket is slightly complicated, which increases the difficulty of research and development on the one hand, and on the other hand, it also increases the cost of the rocket (in fact, the cost of rockets has always been expensive, generally speaking, it is roughly equivalent to 1.5 times the caliber of ordinary artillery shells. Even the rockets used in the 40mm rocket launcher in the book cost hundreds of yuan per shot, and the cost performance is actually not as good as the 107mm rocket, but because the use is relatively narrow, the performance is not as obvious as the 107mm rocket. ）。 The former quickly overcame the difficulties on Jishu because of Goddard, a rocket expert, but the latter had nothing to do. If even the labor cost is included, the average cost of the first batch of 107mm rockets is as high as more than 300 legal currency, which is equivalent to the living expenses of 10 people in a large city of China for a year at that time. Later, after mass production, the cost dropped a lot, but it was still as high as more than 160 yuan. Based on the economic strength of the base area, no matter how easy the 107mm rocket launcher is. For a long time, it can only be used as a surprise soldier, and cannot play the strategic role it could have played

It is precisely because the rocket artillery is too expensive that the main artillery must be ordinary barreled artillery, among which the mountain artillery, which is highly mobile, especially the terrain adaptability, is the most valued by Hu Weidong. The reason why Hu Weidong did not build 75mm mountain guns, but went directly to the horse, and now the Japanese army has not equipped the troops with 105mm mountain guns, is because as an artillery expert, he has insight into the real difference between mountain artillery and field artillery, not in the caliber and weight of the two, but in whether it can be easily split into parts that can be carried purely by manpower, in this case, it is better to directly mount the more powerful 105mm mountain gun (the largest is this caliber). No matter how large it is, the barrel that cannot be divided will inevitably be carried by manpower. Well, of course, Hu Weidong has a ready-made template "105-mm lightweight howitzer" available in his head, which is also a factor that cannot be ignored.

The 105mm lightweight howitzer is a medium-caliber ultra-light suppression artillery independently developed by New China. It is a multi-purpose weapon that can play a prominent role in a variety of military operations. This type of howitzer has the characteristics of light weight, small size and fierce firepower, easy to disassemble and assemble, has flexible mobility and good tactical adaptability in combat, it is an ideal ground suppression weapon for mountain troops and special forces.

Compared with other medium-caliber howitzers, the 105mm portable howitzer has the following advantages: (1) Excellent handling performance: The weight of the 105mm portable howitzer is only 1310 kg. It can be transported and airdropped by aircraft (as it was during World War II); towed by a vehicle or animal power; Or disassemble into 11 parts for quick transport by people or horses. 7 gunners can be disassembled into 11 parts in 3~4 minutes, and a single part can be handled by manpower (so if the gun is placed in the Anti-Japanese War period, it will definitely be counted as a mountain cannon in terms of classification.) ）； All parts can be reloaded into a complete howitzer in 4~5 minutes to perform new tasks. (2) One artillery is multi-purpose: the artillery has a variety of tactical uses, soldiers can adjust the rifling height of the gun according to operational needs, and in the high rifling position, the gun is used as a howitzer to perform fire suppression tasks; In a low-rifled position, it can be used as an anti-tank weapon to perform anti-armor tasks. In addition, it can be used as a mortar or a non-action gun. …,

The main jishu indicator of the 105-mm portable howitzer

caliber 105 mm; muzzle velocity 420 m/s; maximum firing range 10222 meters; Minimum firing range 2200 meters; total weight 1310 kg;

Howitzer status

Firing speed: 3~4 rounds/min; Breech wheelhead height from ground 1070 mm; Directional firing boundary±18°; High and low emission range -5~+65°;

Operational state artillery dimensions: height 1930 mm; width 2530 mm; length 4200 mm;

Dimensions of the artillery in the towed state: height 1900 mm; width 1500 mm; Length: 3650 mm (vehicle traction), 5300 mm (animal traction)

Anti-tank artillery status

Launch speed 8 rounds / min; Breech wheelhead height 690 mm; Directional firing boundary±28°; High and low emission range -5~+25°;

Operational state artillery dimensions: height 1550 mm; Length 4000 mm; length 4700 mm;

Dimensions of the artillery in the towed state: height 1900 mm; width 1500 mm; Length 3650 mm (vehicle traction), 5300 mm (animal traction).

Because the cannon uses very few materials and technological processes, Hu Weidong is confident that it can be manufactured almost without any changes, obviously a mountain cannon, but it has the range of a field cannon and the power of a heavy cannon (according to domestic standards at this time), and it can also be used for more purposes, which can only be described as a rebellion

After the successful development of these weapons, Hu Weidong believed that the devil's army would no longer have any advantage in weapon performance, and it was only a numerical advantage in a limited time, but the air superiority of small Japan still made him quite jealous, and while stepping up the development and improvement of practical radars and proximity fuses, Hu Weidong spent a lot of effort on the development of anti-aircraft guns (your support is my greatest motivation. )