How powerful is the banned rotary engine?

First of all, introduce the status quo. With the progress of silicon-based Al-RE alloy, the "ghost claw" wear phenomenon caused by the friction between rotor and cylinder block in the past has been greatly improved! Therefore, the overhaul life of the engine can range from hundreds of hours to 2000 hours according to the load! Compared with the past, there has been a qualitative leap! Secondly, emphasize the characteristics of the current rotary engine! First, the power-to-weight ratio is high, in other words, the power provided by the engine per unit weight is far greater than that of two-stroke and four-stroke piston machines! This provides powerful power for the power supply of competitive racing cars, motorboats, motorcycles, UAV aero engines, UAV over-the-horizon control base stations, army infantry marching power generation backpacks, radar or monitoring systems of unattended islands and reefs or peaks, and artillery fire control systems. Second, there is no need for crankshaft connecting rod mechanism in rotary engine, so the transmission chain is simple and the internal power loss is less! Therefore, low engine noise is of great practical significance to the concealment and penetration of military equipment! Third, with the technical breakthrough of atomization and combustion mechanism of various fuels! Heavy oil rotary engine welcomes new life! Both the Roadmap of UAV System from 2005 to 2030 issued by the US Army in the early years and the Guide of Equipment Pre-research and Innovation Project 20 17 issued by the China Navy in April this year put forward higher requirements for heavy oil rotary engines! Because heavy oil has high calorific value and flash point, it is easy to store in battle! Unmanned aerial vehicle powered by heavy oil rotary engine has the characteristics of large industrial load and long flight time, and it is a key project in the development of tactical unmanned aerial vehicle of the US military. For example, the ORB92 liquid-cooled heavy oil rotary engine of Honeywell Power System has a dead weight of 3.5 kg and an average power output of 15 HP (horsepower). It can tow an unmanned aerial vehicle with a wingspan of 65,438+08 feet (5.4 meters), with a takeoff weight of 200 pounds (965,438+0 kilograms) and continuous flight at a speed of 56 mph (90 km/h). It is also the case that rotary engines, especially heavy oil rotary engines, are a commanding height in the competition of military equipment between China and the United States! However, at present, China needs to make breakthroughs in materials (corrosion resistance and wear resistance at high speed and high temperature), atomization (heat preservation control technology for cold start failure, air stop and restart, atomized oil injection technology), high-energy ignition (using spark plug to ignite), adaptive turbocharging technology and so on. However, China began to solve the above problems in the 1950s and 1960s, but it is a pity that there is no greater breakthrough so far! At present, domestic rotary engines still use gasoline as fuel!