Free paper models of PzKpfw VI «Tiger»

Free paper models of PzKpfw VI «Tiger» here German doctrine before World War II didn't clearly specify the parameters used to define a light, medium or heavy tank. This lack of an exact definition of the role of each tank type was a result of the inherent qualities of the tank as a weapons system operating in a combined arms force, and as such, it's potential were not fully understood at the time. The same conceptual lack of a clear definition of the three generic tank types also existed in the US, the UK and the Soviet Union. What existed was a somewhat loose classification based on the weight of the tank and the doctrinal missions of each type. In face of that, what was generally accepted was that the light tank was to be employed in reconnaissance missions, that demanded great mobility but didn't require much armor protection nor great lethality. The medium tank were to be used in exploitation or pursuit missions, requiring a different mix of mobility, armor protection and firepower. To fulfill these requirements, medium tanks had to be fast, and to have a greater level of mechanical reliability, since those tanks were to be able of conducting fast maneuvers necessary to exploitation or pursuit missions. Under this classification, heavy tanks were to act as support for the infantry and artillery, but the main purpose of the heavy tank was to penetrate the enemy's defenses, thus allowing the medium tanks to exploit the breakthrough. However, that classification also implied the assumption that the light and medium tanks could, to an extent, perform each other's missions. This was not possible for the heavy tanks, as they wouldn't have the same degree of speed and the operational range of the other two types, because of the greater weight, consequence of the heavier weapons and high degree of armor protection required for these tanks. In 1937, Guderian described the operational principles and tactics that would shape German thinking on how to employ armored formations in a future war. The mission of the heavy tank within this concept was to effect a breakthrough, and it's first objective was to engage and destroy the enemy's anti-tank guns in the defensive line. The next objective of the heavy tanks was to destroy the enemy artillery - but Guderian correctly anticipated that the penetration of the defensive lines would force the enemy to throw his armor reserves in a counter-attack. About the importance of defeating this counter-attack, Guderian emphasized that the greatest enemy of the tank is another tank, and that because of that, the armored forces had to be capable of defeating this counterattack, or the breakthrough would fail. The German doctrine of that time focused mainly on the offensive. Naturally, when the tide turned against Germany, the doctrinal recommendation was that the armor formations would be kept back, and ready to counter-attack any breakthrough of the German defense lines. Consequently, the doctrinal mission of the Tiger was first and foremost, whether in the offense or in the defense, to kill the enemy's tanks. Understanding this way of thinking is fundamental to comprehend why the Tiger was developed and employed the way it was (Source: WILBECK, Christopher W., Sledgehammers: Strengths and Flaws of Tiger Heavy Tank Battalions in World War II). Heinz Guderian, Germany's greatest armor theorist, thought that the primary mission of the heavy tank was to kill enemy's tanks in counter-attacks against German breakthrough attempts. As Generalinspekteur der Panzertruppen, Guderian understood the value of the Tiger as a force multiplier factor either in the offense or in the defense. After the tide turned against the Wehrmacht, the Tiger proved to be a most effective weapons system in defensive operations. Despite the decision to mass produce the Pz.Kpfw.III and IV, and the far certainty at the time that these two models would be adequate for the expected battles of the future, the German general staff also called for an even heavier tank in 1937. This was to be of 29.53 tons (30,000 kg) or more and was to be a heavy "breakthrough" tank to lead the armored assaults. The design lapsed until 1941, by when it was realized that the Pz.Kpfw.III and IV had been less successful than had been expected against the heavily armored French and British tanks in 1940. This view was fully endorsed when the Soviet T-34s and KV-1s were met later in 1941, and resulted in a specification for a heavy tank capable of mounting the highly successful 88 mm high-velocity gun in a turret with full traverse and carrying sufficient armor to defeat all present and future anti-tank weapons. Two firms submitted prototypes, using some of the developments from the 1937 ideas. These were Porsche and Henschel. The turret was common to both and came from Krupp. It is interesting to add, at this point, that Hitler had demonstrated great interest in the Rheinmetall 88mm Flak 41 as the main gun of the Tiger I. This was an indigest proposition for Krupp, which designed and built the Tiger I turret, to have to mount in their turret a gun developed by their archrival. In the end, events unfolded in such a way that the main gun of the Tiger I would be the 88mm KwK 36 L/56, as Porsche never asked Krupp for a turret with 200 cm of diameter (necessary to mount the 88mm Flak 41 on it) - but ordered the production of 6 turrets with a 190 cm diameter, to mount the 88mm KwK 36 L/56. After the turrets production started, it was impossible to mount the 88mm Flak 41 on the Tiger I turrets. The official WaPrüf 6 designation to the Porsche prototype from 5 March 1942 was PzKpfw VI (VK 45.01 P) (Ausfürung P). The Inspekteur der Panzertruppen (In6) designation, specified for use in training and maintenance manuals and in organization tables, was Panzerkampfwagen VI P (88 mm) (SdKfz 181) Ausfürung P. Suggested names were 'Tiger (P)', 'Tiger P1' or 'Porsche Tiger'. The Henschel prototype received the designation VK 45.01 (H). This Henschel model came into being as a rush job, quickly assembled from a mixture of components available from previous heavy panzer designs. Henschel were not originally involved in the 45 metric ton heavy tanks project, as they had been tasked with the development of a 36 metric ton medium tank with 80 mm front armor, the designation of which was Panzerkampfwagen VI Ausfürung B (VK 36.01). To meet the demand that the production program was to start in 1942, the VK 45.01(H) was quickly created by redesigning the VK 36.01. A new feature was the Vorpanzer (frontal shield) which could be lowered to protect the track and drive sprockets. However, this feature was quickly dropped, having only been fitted on this Versuchsserie Tiger Nr. 'V1'. The Porsche prototype - VK 45.01(P). After tests conducted on 20 April 1942, the Henschel prototype was chosen for series production. The decision was based on a maneuverability test, and on the fact that the Henschel prototype was more conventional, cheaper and easier to produce than the extravagant Porsche design. At the time of its introduction, and for some time afterwards, the Tiger was the most powerful tank in the world. The 88 mm gun, which had 92 rounds of ammunition, was enormously formidable, and the armor ensured that any frontal shot could not penetrate. So effectively was it that the Allies had to develop special tactics to deal with it. Production began slowly in August 1942. How to make RC Airplanes

Free paper models of Focke Wulf Ta-152H

Free paper models of Focke Wulf Ta-152H is here Focke Wulf Ta-152H is a Germanic high-altitude fighter World War II. Paper airplane model is very beautiful. What would make a model aircraft, you must print, cut and glue. Total: 4 steps to making paper model airplane. The Focke-Wulf Ta 152 was a World War II German high-altitude fighter-interceptor. The Ta 152 was a development of the Focke-Wulf Fw 190 aircraft, but the prefix was changed from "Fw" to "Ta" to recognize the contributions of Kurt Tank who headed the design team. The number 152 was chosen in the German air ministry's list of numbers allocated to German aircraft companies, and was not related to the designer's previous projects or achievements. It was intended to be made in at least three versions — the Ta 152H Höhenjäger, the Ta 152C designed for slightly lower-altitude operations and ground-attack using a different engine and smaller wing, and the Ta 152E fighter-reconnaissance aircraft with the engine of the H model and the wing of the C model. The first Ta 152H entered service with the Luftwaffe in January 1945. Total production - including prototypes and pre-production aircraft - is estimated at about 220. But only some 43 production aircraft were delivered until the end of the war. This was too late to allow the Ta 152 to have a significant impact on the war effort. How to make RC Airplanes

Free drawings YAK-54 for Laser CNC

You can download drawings YAK-54 from here. I found this plans of rc airmodel Yak-54 in internet and publish in my blog. It's a big 3D airmodel.  How to make RC Airplanes

How to make a rc air plane Cessna 150

How to do rc airplane Cessna 150. The Cessna 150 it’s RC Electric Foam Aircraft. I designed and built it from deprone. Motor 2205C 1400Kv Brushless motor 3 servo HXT500 5g / .8 kg / 10sec Micro Serv 1 servo HXT900 9g / 1.6kg / .12 sec Micro Servo (for elevator) Speed Controller SuperSimple 18A ESC Battery ZIPPY Flightmax 1000mAh 2S1P 20C Prop GWS 8x6 or 9x4.7 You can download plans for Cessna 150 from here or here. Print the drawings and cut piece from deprone. I used double-sided sticky tape for joining the keel and rudder. Also fixed а elevator. Plaster with a thin layer of glue all around the adhesive tape and pressed the second part. Skeleton of Cessna 150. Glue the keel to the sidewall of the fuselage. And a nasal lining. Glue the second side of the fuselage and the lower and upper part.    Production of a wing model aircraft.     Cut the back of the wing. Fixes it. And glue spar. Now glue the back edge of the wing. Making the edge of the wing     Glue a V part spar into one console of wing. And look at the model aircraft   Part 2. Install electronic in RC model Cessna 150. Servo for rudder.   Servo for elevator. Glue it. Connect rudder and elevator into servos. Cut a aileron. Servo for the aileron.   For mounting the ailerons, I used colored tape.   Glue the wing. On top of the wing put the pad width 115 mm. Now glue the wooden sticks on the front and rear edge. This is to ensure that the gum would not selling the wing model aircraft. Ok. Done. RC model airplane flying weight of 314 grams. The Cessna 150 on a ground. Test fly My frends made Cessna 150 too How to make RC Airplanes