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WP14 Kunlun

The WP-14 Kunlun is a 78kN thrust turbofan for the Shenyang J-8II. The Kunlun was cleared for series production in May 2002, and it has a thrust-to-weight ratio of 7:1.

The China Defense Blog writes that "The WP14 ( Kunlun ) turbojet engine is a two-shaft turbojet engine with three compressor stages now powering both the J-7 and the twin-engine J-8. It was described as "the first jet engine to be designed and developed entirely in China " during it was first public display at the 2002 China Airshow. The J-8D was the first Chinese fighter to be equipped with the WP14, since installed in all follow-up J-8 models such as the F and H. Now, the J-7G is being refitted with the WP14, which makes it the single engine for both types of aircraft, thus greatly reducing the quartermaster's workload. The WP14 took 20 years to develop and while it is not state-of-the-art by any means, inside China the project is regarded as a major milestone for its domestic aircraft engine program."

Kun-lun Mountains

Recent Chinese jet engines have been named after famous mountains in China. The WP14 is named after the Kun-lun Mountains. The whole of the mountain systems of China are connected with the great Kun-lun Range of Central Asia. The Kunlun is the most northerly of the three great mountain chains of higher Asia, the most southerly being the Himalayan range. The Kunlun chain, is very remarkable. The Kunlun starts, like the Karakorums, from the south-east corner of the plateau. This is the Kunlun Range, which runs across Asia in an easterly direction, separating Tibet on the south from Chinese Turkestan and the Gobi Desert on the north. Very little is known by geographers of the western part of this chain, perhaps less than of any great tract in the world outside the Arctic regions. If one compares the maps of Central Asia in the most recent editions of the best atlases, one will see how geographers differ in their views concerning the Kun-lun Mountains. It seems certain, however, that a great branch is thrown off to the northward, probably about in longitude 83. For the first part of its course it is called the Altyn Tag. Further east, under other names, it passes north of the Yellow River, just above the great loop, and continues across Mongolia into Manchuria.

The main chain, with which we are more immediately concerned, maintains its eastward course into the southern part of Kokonor. Here it breaks up into several ranges. One range goes on through southern Kansu, across Shensi, running close by the great bend of the Yellow River into central Honan. Afterwards it bends south, then goes east again, becoming the frontier of Hupei and running nearly across Anhui, south of the valley of the Huai River. An offshoot is given off from this range in Kansu towards the north-east. It traverses northern Shensi, and, crossing the Yellow River, runs through northern Shansi and Chihli to the top of the Gulf of Pechili. This is the frontier line between China and Mongolia, and marks approximately the line of the Great Wall. A third range, to the south of the first one, forms the northern frontier of Sechuan and passes into Hupei, between the Yangtse and its tributary the Han.

Nephrite occurs on both sides of the Kunlun range; the predominating rock is gneiss; granite also sometimes occurs. Beds of nephrite are found from 20 to 40 feet in thickness. The name given to nephrite in Eastern Turkistan is "yashem," or "yashm;" in China it is called "yu." The same name is found in Germany, England, and France modified to "jade." Nephrite, jade, and saussurite belong to the anhydrous silicates; nephrite may be regarded as a calcium-magnesium silicate, while jade is more properly an aluminium-sodium silicate, saussurite being an aluminium-calcium silicate. Saussurite melts before the blowpipe more easily than nephrite, but with more difficulty than jade. Jade held in an ordinary alcohol flame melts to a yellowish glass, which becomes blue when strongly heated, after being moistened with solution of cobalt nitrate.




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