The two fighters of the Soviet 5.3 are the famous Lavochkin fighters, the La-7B-20 and the La-11. Pen ~ fun ~ pavilion www.biquge.info

Originally known as the "1944 Standard" La-5FN, the La-7 was a significant difference from its predecessors. The spar of the aircraft replaced the previous wooden part with metal, improved the sealing performance of the fuselage power system, equipped with 3 UB-20 cannons, moved the position of the oil cooler from the bottom of the engine fairing to the rear fuselage, and moved the supercharger from the engine fairing to the leading edge of the middle section of the wing. The take-off weight of the aircraft was reduced by 121 pounds, and the aerodynamics were improved.

As a result of these improvements, the prototype demonstrated excellent performance: 373 mph at low altitude, 419 mph at 10,500 feet, and 425 mph at 20,000 feet. Soon the La-7 was finalized, and in the spring of 1944 the production version of the La-7 (Lavochkin Design Bureau Internal No. 45) began production at plant No. 21 in Gorky, and in September 1944 plants No. 381 and No. 99 also began production of La-7. Due to problems with the planned B-7 cannon to be equipped with the La-20, the aircraft were armed with only two 20-mm Schwark cannons.

It was not until January 1945 that a production version of the La-7 was fitted with three B-20 cannons. The B-20 cannon uses the same 20x99mmR shells as the Schwark cannon, which is almost identical to the ShVAK in terms of performance alone, but has the advantage of being super light - a 20mm cannon weighs only 25kg, which is absolutely frighteningly light.

The firepower of the three-door 20mm B-20 is very strong and has already thrown off the BF109 and FW190 fighters without hanging pods. Its arrangement on the central axis of the fuselage also ensures the accuracy of shooting.

After the end of the war, Lavochkin made some modifications to the La-7 again, and the La-9 basically maintained the aerodynamic layout and shape characteristics of the La-7, the main improvements were the use of all-metal structure, laminar flow airfoil, and the replacement of weapons with four NS-23 cannons.

Although the rate of fire and muzzle velocity of the NS-23 are inferior to those of the B-20 cannon, the power of the 23X115mm shells used in it is not comparable to that of the 20X99mmR shells.

The La-11 is a modification of the La-9, which is mainly used to escort bombers. The basic structure of the La-11 is the same as that of the La-9, with the elimination of an NS-23 cannon and the increase in fuel reserves.

Due to the decrease in firepower and the increase in fuel weight, the weight of the La-11 also fell from 5.7 to 5.3 on the La-9, which is the same class as the La-7B-20.

"The basic performance of the La-7B-20 and the La-11 is not too different, and the two fighters are excellent in terms of speed, climb, roll and maneuver within 3,000 meters. The disadvantage is probably the poor performance above 4000 meters, and then there is the problem of high-speed rudder locking of light fighters. ”

Listening to Otowa's words, Mika just smiled.

"The height of this competition is not very high, Otowa-san, but that's not a problem. ”

"Well, so these two fighters are actually very good choices. Otowa nodded, then continued, "But let's take a look at the rest of the fighters first." ”

THE 5.3 OF BRITISH IS SPITFIRE LFMK.IX, SPITFIRE FMK.XIIVE, SPITFIRE FRMK.XIIVE, AND SEAFIRE MK.XVII.

To deal with the Fw190, a model based on the Spitfire MkVIII was put on the agenda. This model of the Spitfire has a reinforced fuselage on the basis of the MkVIII, a retractable tail wheel is installed, and the Merlin 60 series engine used is fitted with a two-stage two-speed supercharger, which can output much more power at high altitudes.

Among these improvements, the modification of the airframe is the most important, but it is time-consuming. The program of improving the airframe eventually developed an excellent fighter, but in order to meet the urgent demand for a new fighter, the Merlin 60 engine was first "temporarily" installed on the fuselage of the Mk.V. To accommodate the intake air cooling of the supercharger, two radiators were symmetrically installed under the wing. As a result, the Mk.IX, like the Mk.V, was a huge success, with a total of 5,665 aircraft built, making it the second most produced model in the Spitfire.

The Spitfire LFMK.IX is a low-altitude Spitfire, using a Merlin 66 engine with 1,300 horsepower, but it can reach an astonishing 2,000 horsepower after turning on afterburner.

Although the power of the Merlin engine was increased, a larger "Griffon" engine was developed to meet the demand. The Griffin adopted the same 12-cylinder V-shaped structure as the Merlin, but increased the displacement of the Merlin from 27 litres to 36 litres. In addition, the direction of rotation of this engine is also opposite to that of Merlin, and many pilots were surprised by the diametrically opposite direction of deflection during takeoff.

The Spitfire MK.XIVE is the same model with the Griffin engine, but with a modern bubble cockpit, which is much faster than the Merlin engine's Spitfire MK.IX, but with less flexibility. THE SPITFIRE FRMK.XIIVE, ON THE OTHER HAND, HAS SHORTENED THE WINGS ON THE ORIGINAL TO ENHANCE ROLL PERFORMANCE, BUT AT THE COST OF HORIZONTAL MANEUVERABILITY.

The Seafire is a naval version of the Spitfire, and in order to meet the needs of its use as a carrier-based fighter, the Seafire is equipped with a landing hook, equipment for aircraft catapults, and folding wings on the basis of the Spitfire. The Seafire fighter is not a very ideal carrier-based fighter, mainly because of the fact that there are certain difficulties when landing on an aircraft carrier and the short range of the Seafire. Despite these shortcomings, the aircraft is still very effective in providing air cover for the fleet due to its fast climb and good maneuverability.

The Seafire MK.XVII also features a Griffin engine, as well as a bubble cockpit. HOWEVER, THE GRIFFIN-VI USED IS NOT VERY GOOD AT HIGH ALTITUDES, AND ITS SPEED IS NOT AS GOOD AS THAT OF THE SPITFIRE MK.XIE.

In terms of firepower, all four Spitfires are based on two 20mm Sispano MK.II cannons. With the exception of the four 7.7mm Brownings with the Sea Fire, the other three Spitfires are all two 12.7mm M2.

Otowa quickly swept over the four fighters, and at the same time had a bottom on the four fighters.

"The four Spitfires have good low-altitude maneuverability and are all suitable for this race. The low-altitude performance of the Low Spray 9 is strong and the maneuverability is very good. Although the spray 14 has poor maneuverability, the speed is much faster, and the rolling performance after the specialization of the 14 should not be underestimated. The Maneuverability of the Seafire 17 is between the low-jet 9 and jet-14, and although it is not fast, it is equipped with a landing hook that can land on the carrier. ”