Jiangsu Haifa Machinery Manufacturing Co., Ltd.

"Flame No. 2" (LY-2) is an electric-cycle liquid rocket engine independently developed by Spark Space. Its most notable feature is the adoption of electric pump cycle technology, using high-power motors and battery systems to drive the propellant pumps, replacing the complex gas generator and turbo-pump systems found in traditional liquid rocket engines. Public reports indicate that the "Flame No. 2" has a single-engine thrust of 10 tons and has completed full-system testing, making it one of the currently largest-thrust electric-cycle liquid rocket engines. Traditional liquid rocket engines typically rely on-temperature gas to drive turbo-pumps, pressurizing propellants such as liquid oxygen and kerosene before sending them into the combustion chamber. This approach offers high performance but involves complex systems, including gas generators, turbines, pumps, valves, ignition controls, and high-temperature seals, leading to high manufacturing difficulty, high testing costs, and demanding maintenance requirements. In contrast, electric-cycle engines directly drive the oxidizer and fuel pumps via motors, eliminating the high-temperature turbine system and significantly simplifying the engine structure. The advantages of the electric pump approach are mainly reflected in three aspects. First, it offers a simple structure and high reliability. Without the high-temperature gas turbine, the engine's thermal load and mechanical complexity are reduced, helping to lower the number of failure points. Second, thrust adjustment is more flexible. Motor speed can be quickly adjusted through the control system, thereby changing the propellant flow rate, making it suitable for commercial rockets that require rapid response and repeated launches. Third, manufacturing and maintenance costs are lower. Electric pump engines are better suited for modular design and mass production, offering clear appeal to private commercial aerospace companies. Of course, electric-cycle engines also have their limitations. The battery system adds extra weight, and the greater the thrust and the longer the operating time, the higher the demands on battery energy density, motor power density, and management capabilities. Therefore, electric pump technology is more suitable for small and medium-sized launch vehicles, upper stages, or commercial aerospace scenarios emphasizing low-cost and rapid launches, while in the field of ultra-high-thrust main engines traditional turbo-pump engines still hold performance advantages. The significance of "Flame No. 2" lies in its validation of the feasibility of domestically developed electric pump technology in larger-thrust liquid rocket engines. information shows that Spark Space is developing the "Evolution No. 1" electric-cycle liquid launch vehicle, whose propulsion system will adopt the "Flame No. 2" engine configuration, providing a new technical pathway for low-cost, high-reliability, and rapid launches in commercial aerospace. From the perspective of the pump, "Flame No. 2" reflects the development direction of high-end pump technology: high-speed motor drives, high-power-density pumps, cryogenic propellant delivery, lightweight structures, and high-reliability controls. Although rocket electric pumps differ in application scenarios from ordinary industrial pumps, their technical concepts offer important references for cryogenic pumps, high-speed pumps, liquid oxygen pumps, liquid hydrogen pumps, and high-end chemical process pumps. Jiangsu Haifa Machinery Manufacturing Co., Ltd. was restructured from the Jiangsu Ligong Group Co., Ltd. Jingjiang Stainless Steel Pump and Valve Factory of the Iron and Steel Research Institute of the Ministry of Metallurgical Industry, established in 1958. primarily produces API610 chemical process pumps - OH1 pumps, OH2 pumps, OH3 pumps, OH4 pumps, BB1 pumps, BB2 pumps, BB3, BB4, BB5 multi-stage pumps, VS1, VS4,5, VS6 barrel pumps, HES-type chemical process pumps, chemical pumps, petrochemical pumps, sixth-generation ultra-low carbon stainless steel high-quality leak-free molten urea pumps, urea hydrolyzer feed pumps, high-temperature asphalt pumps, pitot tube pumps, rotary jet pumps, low-flow high-head pumps, multi-stage vortex pumps, high-temperature molten salt pumps, high-temperature nitric acid pumps, vertical submerged pumps, magnetic drive pumps, low-temperature liquid hydrogen and methanol pumps, high-pressure liquid hydrogen pumps, high-temperature nitric acid magnetic pumps, magnetic drive pumps for conveying solid-containing media, industrial pumps, furnace water circulation pumps, canned motor pumps, slurry pumps, titanium tetrachloride pumps, strong self-priming pumps, lined fluorine pumps, clamped lined fluorine pumps, leak-free pumps, desulfurization and denitrification pumps, alkali pumps, pumps, geothermal pumps, oil pumps, axial flow pumps, printing and dyeing pumps, dyeing and finishing pumps, Ti alloy pumps, C-276 material, Hastelloy, 316L, forced circulation pumps, fourth-generation nuclear pumps, nuclear island pumps, special pumps for filter presses, refrigerant pumps, long-shaft vertical submerged pumps, CQC first-level energy efficiency chemical pumps, high-pressure descaling industrial pumps, China chemical pumps. www.jslgpump.com Contact: 13905263417 E-mail: jslgpump@gmail.com E-mail: jsareva@163.com