P-3100: Fill & Download for Free

The Curtiss P-40 Warhawk is an American single-engined, single-seat, all-metal fighter and ground-attack aircraft that was introduced in 1941, and served throughout the entire war mainly in North Africa and the Pacific but was superseded by the P-51 and Spitfires. Known as the Kittyhawk Mk. IV by the British, the lightweight P-40N Warhawk was the most-produced P-40 variant. With a top speed of 378 mph, the P-40N also had the best performance of the production-model P-40s. It had a new service ceiling of 31,000 feet, it had a range of 340 miles with a 500 pound bomb underneath the fuselage. However three drop tanks promised a ferry range of up to 3100 miles at 198 mph. It had a new canopy which allowed for better visibility while being up armed with 6 50 calibre machine guns instead of the previous 4 giving it much better firepower. It severed till the end of the War against the Japanese in the Pacific, and is now a common Warbird.Curtiss P-40N Kittyhawk

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Classification of Indian LocomotivesYou should have seen the letters WDP-3A ,WDM-3F or some thing like this painted on the front and sides of an engine,but have you guys ever wondered what these letters stand for?Well,these letters are used to classify these locos according to their track gauge,the motive power,the work they are suited for and their power or model number.The first letter (gauge)W – Indian broad gauge (the "W" Stands for Wide Gauge - 5 ft 6 in)Y – metre gauge (the "Y" stands for Yard Gauge - 3 ft or 1000mm)Z – narrow gauge(2 ft 6 in)N – narrow gauge (toy gauge) (2 ft)The second letter (motive power)D – dieselC – DC electric (can run under DC overhead line only)A – AC electric (can run under AC overhead line only)CA – both DC and AC (can run under both AC and DC overhead line); 'CA' is considered a single letterB – Battery electric locomotive (rare)The third letter (job type)G – goodsP – passengerM – mixed; both goods and passengerS – shunting (also known as switching engines or switchers in the USA and some other countries)U – electric multiple unit (used to carry commuters in city suburbs)R – RailcarThe fourth letter is used to denote locomotives' chronological model number. However, from 2002 a new classification scheme has been adopted. Under this system, for newer diesel locomotives, the fourth letter will denote their horsepower range. Electric locomotives don't come under this scheme and even all diesel locos are not covered. For them this letter denotes their model number as usual.For example, in "WDM 3A":"W" means broad gauge"D" means diesel motive power"M" means suitable for both goods and passenger service"3A" means the locomotive's power is 3,100 hp ('3' stands for 3000 hp, 'A' denotes 100 hp more)Or, in "WAP 5":"W" means broad gauge"A" mean AC electric traction motive power"P" means suitable for Passenger service"5" denotes that this locomotive is chronologically the fifth electric locomotive model used by the railways for passenger serviceA locomotive may sometimes have a fifth letter in its name which generally denotes a technical variant or subclass or subtype. This fifth letter indicates some smaller variation in the basic model or series, perhaps different motors, or a different manufacturer. With the new scheme for classifying diesel locomotives (as mentioned above) the fifth item is a letter that further refines the horsepower indication in 100 hp increments: 'A' for 100 hp, 'B' for 200 hp, 'C' for 300 hp, etc. So in this scheme, a WDP-3A refers to a 3100 hp loco, while a WDM-3F would be a 3600 hp loco.Source : Wikipedia