User:天津风不是天津的风/沙盒

Engineering technology unlocks radar, nuclear weapons, jet and rocket engines, and improves research speed, encryption, decryption, and rocket artillery attack.

Engineering technology is separate from industrial technology, meaning the player must hire an engineering design company such as the USA's General Electric (+15%) in order to get research bonuses for engineering technology research. A nation may also be offered political decisions, for example "Give refuge to German scientists (+5%)" or "Give refuge to Italian scientists (+5%)", that give a bonus to engineering technology research for a (PP) cost.

Engineering research tree

Clicking on a technology icon leads to the appropriate table row.

Electronics

This tree unlocks radar, radio, and improves research speed, encryption, and decryption. Electronics is also named electronic engineering.

Technology	Year	Base time	Effects	Equipment modules
Electronic mechanical engineering We live in an age when electrical machines can no longer only warm and light us, but help us think and communicate. Electronics will be key to military intelligence in the coming century.	1936	100 days	File:Research speed.png Research speed: +3%	Central rangefinding A central station high up in the ship's mast determines the range to the target and transmits that information to the gun mounts. Light attack: +5.0% Production cost: 60 Heavy attack: +5.0%

RADAR technology

Technology	Year	Base time	Prerequisites	Effects	Equipment modules
Radio Adopting the inventions of amateur radio operators and extending the use of FM radio will reduce radio interference and allow us to find new uses for radio technology.	1936	175 days	Electronic mechanical engineering	File:Reinforce rate.png Reinforce rate: +5% Coordination: +4%	Basic radio File:Basic radio.png A basic two-way radio allows tanks to coordinate their tactical maneuvers on a small scale. Defense: +25.0% Production cost: 0.5 Breakthrough: +15.0%
Radio detection Adopting the inventions of amateur radio operators and extending the use of FM radio will reduce radio interference and allow us to find new uses for radio technology.	1936	175 days	Radio	Coordination: +1% Unlocks  radar station with a limit of 1 per state	–
Decimetric radar Many units rely on the element of surprise for their efficiency. Development of decimetric radar allows us to deprive them of this advantage.	1938	125 days	Radio detection	Coordination: +1% Increases  radar station limit to 2 per state	Decimetric naval search radar A central station high up in the ship's mast determines the range to the target and transmits that information to the gun mounts. Surface detection: +5 Production cost: 80 Improved radio File:Improved radio.png An improved radio allows commanders effective control over larger formations of tanks, permitting large-scale operational maneuvers. Defense: +45.0% Production cost: 1.5 Breakthrough: +30.0%
Improved decimetric radar The use of radar has already proven crucial, but our decimetric radar sets are too few to ensure good coverage. Fitting more units with radar will allow us to maximize our technological edge.	1939	125 days	Decimetric radar	Coordination: +1% Increases  radar station limit to 3 per state	Improved decimetric naval search radar An improved radar set working in the 30cm wavelength range can accurately measure the range and bearing of even a small ship at ranges of over 25 kilometers. Surface detection: +7 Production cost: 110 Sub detection: +2
Centimetric radar New radar operating in the microwave bands enable us to detect objects too small for previous radars to pick up.	1940	125 days	Improved decimetric radar	Coordination: +1% Static anti air hit chance factor: +20% Increases  radar station limit to 4 per state	Centrimetric gunnery radar Equipped with cavity magnetrons, this radar set allows not only the detection of very small targets but even detecting the splashes of shells. This allows for true blind-fire against targets, even at night or in bad weather. Light attack: +5.0% Naval AA attack: +5.0% Sub detection: +6 Heavy attack: +5.0% Surface detection: +12 Production cost: 140 Advanced radio File:Advanced radio.png With a more powerful transmitter and better reception, this radio allows communications over dozens of kilometers and in the face of enemy jamming. Defense: +65.0% Production cost: 2.5 Breakthrough: +45.0%
Improved centimetric radar New radar operating in the microwave bands enable us to detect objects too small for previous radars to pick up.	1941	125 days	Centimetric radar	Coordination: +1% Static anti air hit chance factor: +20% Increases  radar station limit to 5 per state	–
Advanced centimetric radar Despite our advanced radars, there are still ways for the enemy to avoid detection. New developments like the Pulse-Doppler radar allows us to eliminate many of these limitations in our equipment.	1942	125 days	Improved centimetric radar	Coordination: +1% Static anti air hit chance factor: +20% Increases  radar station limit to 6 per state	Integrated fire control radar Working in the centimeter wavelength range, this radar set is fully integrated into the ships gunnery control and allows highly accurate gunfire control in all weather conditions. Light attack: +10.0% Naval AA attack: +10.0% Sub detection: +14 Heavy attack: +10.0% Surface detection: +18 Production cost: 170

Computing technology

Technology	Year	Base time	Prerequisites	Effects
Mechanical computing Constructing machines capable of advanced differential analysis will radically change what sort of machine-assisted calculations can be made.	1936	250 days	Electronic mechanical engineering	File:Research speed.png Research speed: +4%
Computing machine Developing a theoretical groundwork for modern computers and constructing electromechanical machines to start putting them into practice will be the first steps into this realm of possibilities.	1938	250 days	Mechanical computing	File:Research speed.png Research speed: +5%
Improved computing machine Electronic digital computers can now be made which are programmable. Although still expensive and large, these machines allow for intelligence analysis far beyond human capacity.	1940	250 days	Computing machine	File:Research speed.png Research speed: +8%
Advanced computing machine Beginning to work on computers capable of storing programs and making use of transistors will put us on the path to a Digital Revolution where these machines may be used in nearly any field.	1942	250 days	Improved computing machine	File:Research speed.png Research speed: +8%

Ships

Technology	Year	Base time	Prerequisites	Equipment modules
Basic fire control system All fire of the ship's guns is controlled from a central position, ensuring a tighter grouping of shots and increases accuracy.	1936	100 days	Mechanical computing	Director fire A central director station fires all guns simultaneously at the command of the gunnery officer. Light attack: +10.0% Naval AA attack: +10.0% Production cost: 90 Heavy attack: +10.0% Reliability: −5.0%
Improved fire control system By entering course, speed and distance of a target, a mechanical computer can accurately predict where the target will be when the next salvo is ready to fire.	1939	100 days	Basic fire control system	Mechanical rangekeeper A mechanical computer in the ship continuously updates range and bearing to target from information fed to it by rangefinders and other sensors. Light attack: +15.0% Naval AA attack: +15.0% Production cost: 120 Heavy attack: +15.0% Reliability: −7.5%
Advanced fire control system By entering course, speed and distance of a target, a mechanical computer can accurately predict where the target will be when the next salvo is ready to fire.	1941	100 days	Improved fire control system	Ballistic computer A more complex mechanical computer considers a large variety of factors when calculating the ballistic solutions to engage the target. Light attack: +20.0% Naval AA attack: +20.0% Production cost: 180 Heavy attack: +20.0% Reliability: −10.0%

Encryption methods

These technologies are only available without ‘La Résistance’ DLC. Computing machine, improved computing machine and advanced computing machine also count as encryption methods.

Technology	Year	Base time	Prerequisites	Effects
File:Encryption - polyalphabetical ciphers.png Encryption - polyalphabetical ciphers With new methods of communication comes new risks for interception. Rotor cipher machines can be used to allow for rapid, complex encryption.	1938	100 days	Computing machine	Encryption: +1
File:Encryption - cyclic permutations.png Encryption - cyclic permutations Limitation in the randomization of cipher machines can be exploited to break the ciphers. By improving the randomness of the rotor mechanics, we can make this kind of cryptanalysis more difficult.	1940	100 days	Improved computing machine	Encryption: +1
File:Encryption - pulse-code modulation.png Encryption - pulse-code modulation Technological improvements and hard-earned experience allows us to implement more traffic flow security measures in our communication.	1942	100 days	Advanced computing machine	Encryption: +1

Decryption methods

These technologies are only available without ‘La Résistance’ DLC. Computing machine, improved computing machine and advanced computing machine also count as decryption methods.

Technology	Year	Base time	Prerequisites	Effects
File:Decryption - frequency analysis.png Decryption - frequency analysis Cryptanalysis is increasingly becoming an advanced mathematical science. Systems like card catalogs and devices like cyclometers can aid the necessary work.	1938	150 days	Computing machine	Decryption: +1
File:Decryption - side-channel attack.png Decryption - side-channel attack The development of more sophisticated computers allows for new applications of cryptanalysis methods like differencing, which can be used to break advanced cyphers when combined with new hand codebreaking methods.	1940	150 days	Improved computing machine	Decryption: +1
File:Decryption - automated deduction.png Decryption - automated deduction The increased computation power that improved our cryptanalysis so far threatens to create nearly unbreakable ciphers in the future. To stay ahead, we must be prepared to work more aggressively on gaining inside information on the technology.	1942	150 days	Advanced computing machine	Decryption: +1

Nuclear technology

Technology	Year	Base time	Prerequisites	Effects
Atomic research In nuclear fission, splitting the atom yields enormous amounts of energy and limitless destructive capability.	1940	500 days	–	File:Research speed.png Research speed: +4%
Nuclear reactor This building provides the state with production of enriched Uranium for use in Nuclear weapons.	1943	500 days	Atomic research	Unlocks  nuclear reactor with a limit of 1 per state
File:Nuclear bombs.png Nuclear bombs A project to construct an atomic bomb will be one of the most secretive and difficult tasks a nation can undertake, but, if successful, may change not only the course of today's wars but of the future of the world.	1945	500 days	Nuclear reactor	Enables nuclear bombs

Rocketry technology

Note: Bug forum:1521765 regarding guided missile graphics erroneously showing resource costs and production costs. Guided missiles are produced at no cost through rocket sites at the rate of 1 missile per day per site. Please disregard all guided missile costs shown in the table below.

Technology	Year	Base time	Prerequisites	Effects	Equipment and modules
Experimental rockets Advancing the science of rocketry by improving the range and reliability of liquid-fuel rockets will teach us enough about the technology to allow the construction of launch sites for more advanced models.	1943	150 days	–	Unlocks  rocket site with a limit of 2 per state	–
Rocket engines Knowledge of rocket propulsion is reaching a point where we can construct flying bombs and rocket-powered aircraft, operating at previously unreachable speeds.	1944	200 days	Experimental rockets	Support rocket artillery,  Rocket artillery, Truck-drawn rocket artillery Truck-drawn rocket artillery and  Motorized rocket artillery: Soft attack: +5%	Rocket Interceptor I 3 2 1 Short range experimental interceptor powered by an unreliable chemical rocket engine. Service manpower: 5 Air defense: 5 Agility: 30 Naval attack: 5 Max speed: 950 km/h Production cost: 16 Range: 150 km Air attack: 47 Air superiority: 1.0 Naval targetting: 10 Reliability: 30% Basic guided missile 3 3 Unmanned flying bomb Range: 500 km Strategic bombing: 300 Naval targetting: 0.6 Reliability: 80% Agility: 10 Naval attack: 1.5 Max speed: 640 km/h Production cost: 54
Jet engines A breakthrough in propulsion technology, the Jet Engine will enable the development of an entirely new generation of aircraft.	1944	200 days	Rocket engines	The development of Jet Engines is an essential prerequisite for the development of jet powered aircraft. This must be researched before you can research advanced aircraft	Gas turbine File:Gas turbine.png An turbine developed from jet engines. High fuel consumption, but the highest speed of any engine at a given Engine Size. Max speed: +0.5 km/h Reliability: −10% Production cost: 3 Max speed: +25% Fuel usage: +4
Improved rocket engines The first long-range ballistic missiles can be built and made ever more precise, reaching distant enemy cities and even into space.	1945	150 days	Rocket engines	Support rocket artillery,  Rocket artillery, Truck-drawn rocket artillery Truck-drawn rocket artillery and  Motorized rocket artillery: Soft attack: +5%	Rocket Interceptor II 3 3 1 Short range interceptor powered by a slightly more reliable chemical rocket engine. Service manpower: 5 Air defense: 7 Agility: 36 Naval attack: 5 Max speed: 1100 km/h Production cost: 18 Range: 300 km Air attack: 56 Air superiority: 1.0 Naval targetting: 10 Reliability: 50% Improved guided missile 3 3 Better unmanned flying bomb Range: 640 km Strategic bombing: 450 Naval targetting: 0.6 Reliability: 80% Agility: 10 Naval attack: 1.5 Max speed: 5760 km/h Production cost: 54
Advanced rocket engines The future of rocketry opens up possibilities like intercontinental missiles, the range of which knows few limits while the payloads grow more lethal.	1946	150 days	Improved rocket engines	Support rocket artillery,  Rocket artillery, Truck-drawn rocket artillery Truck-drawn rocket artillery and  Motorized rocket artillery: Soft attack: +5%	Rocket Interceptor III 3 3 1 We have finally worked out most of the problems with the rocket engines and the Rocket Interceptor is now a solid close range defender of facilities. Service manpower: 5 Air defense: 10 Agility: 60 Naval attack: 5 Max speed: 1150 km/h Production cost: 20 Range: 500 km Air attack: 60 Air superiority: 1.0 Naval targetting: 10 Reliability: 80% Advanced guided missile 3 3 Best unmanned flying bomb Range: 11,000 km Strategic bombing: 600 Naval targetting: 0.6 Reliability: 80% Agility: 10 Naval attack: 1.5 Max speed: 9999 km/h Production cost: 54

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