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China “owlet dragon” and India “glory” contrast
When the people talk about India and China two kind of new fights machine-hours which develops, inevitably can carry on them the contrast. Certainly, the people still hoped “the glory” and “owlet’s dragon” never can encounter in the fight. “The glory” and “the owlet dragon” basically belongs to the identical rank the fighter aircraft, similarly all is at the flight-test stage, moreover all is India, center both countries independent development airplane. In both countries aviation industry tradition all is according to specially permits the production military airplane, but is not independently develops by our country. But, although two kind of airplanes are extremely similar in the volume and the weight aspect, but the bilateral designers in the aerodynamic force contour, the flight control idea and the body structure aspect actually are following the completely different principle. Under lets us according to the information which at present can obtain, only makes an analysis from the technical stratification plane to them.
Aerodynamic force and flight control
In two kind of fighter aircrafts, “the glory” the type fighter aircraft most has the innovation without doubt. Its compound 三角翼 design idea is advanced, meanwhile used the numeral to fax the flight control system. The compound 三角翼 design in theoretically may have a higher lifting force, but the tradition the delta-winged aeroplane actually with difficulty realizes. “The glory” the type fighter aircraft also peacefully has in the leading edge 阻力板, causes its lift-drag ratio to be better.
In fact, printed these achievements which the side obtained to spend the long time and to invest the huge endeavor, moreover the distance obtained completely successfully also has quite section of distances. The performance flight plan slow progress and passed for 3 years only partially to complete to the flight enveloping curve test, also had indicated it passed the difficulty which experienced, also indicates future will face question.
“The owlet dragon” the type fighter aircraft had reflected the more conservative design thought, this mainly is stems from avoids the technical risk the consideration. The designer has used the traditional aerodynamic force layout, simultaneously also discretely has accepted some most advanced aerodynamics technology, but all is the technology which quite 简便易行 or passes through repeatedly confirms. The airplane makes which according to this kind of design thought both can effectively enhance the whole operational performance, simultaneously and quite simple is reliable.
As a result of the special leading edge design, effectively enhanced the lifting force which the airplane may obtain. This causes to use the single channel fax control system to become possibly, simultaneously comprehensively will use the fax control for the future to leave behind the promotion leeway.
Body structure
Two kind of fighter aircrafts have made the entirely different choice in the structural design aspect. “The glory” the type fighter aircraft plans one of main technical goals maximum limit uses the compound material, the compound material weight will possibly occupy in on the volume production fighter aircraft above entire fuselage weight 40%. This speaking of reduces tare weight, enhances the load-carrying capacity and the thrust ratio the count for much, but definitely can increase the production cost. However, because “the glory” the type fighter aircraft price must far surpass the political factor influence the industry factor, the production cost question possibly cannot produce to this molding machine exportation price too greatly affects.
“The owlet dragon” the type fighter aircraft based on the absolute traditional design thought, the nearly entire fuselage all is makes by the ordinary alloy. This both reduced the technical risk, and saved the cost, certainly must make a sacrifice in the fuselage weight aspect. _ on the battlefield 生存 survivability aspect, completely in combat in and hit by the compound material manufacture airplane time performance comparatively bad.
Propulsion system
India hoped borrows the development “the glory” the type fighter aircraft opportunity, may develop the production advanced fighter aircraft in the domestic establishment the complete set industry facility. The development “the card 维里” the engine also is one of its goals. The India side understood this will bring in technical the high risk, “the card 维里” the type engine slowly will not be able to achieve the qualified standard, will print the side to be able not but to make the unpleasant decision, namely at least will assemble the American engine on the first batch new fighter aircraft. This enable the entire plan to have the possibility to be threaten which US embargoes, because if India and Pakistan make war beautifully definitely can carry out the sanction. Moreover, foreign exports the fighter aircraft also to have to obtain American the agreement.
“The thunder and lightning” the type fighter aircraft Kerry not husband :diablo: RD-93 engine and US’S F404 engine performance is similar. But because oil consumption less, therefore works as the fuel on board same time combat radius is bigger. But “thunder and lightning” type fighter aircraft 推重 quite small, its reason one is because 空重 bigger, two is because the internal fuel on board are many (certainly latter itself also is merit). In the long-range view, if the FC-1/JF-17 fighter aircraft will replace the SMR-95 engine which will improve by the RD-33 engine to be more appropriate. This kind of engine already installed in the South African air force equips “the illusory image” F1 and “the ultra cheetah” on the type fighter aircraft, and has obtained the noticeable success, were most may enhance the thrust force 6%. The SMR-95 engine opens when the thrust augmentation is 86,000 cows, does not open when the thrust augmentation is 54,000 cows; The RD-33/RD-93 engine opens when the thrust augmentation is 81.5000 cows, does not open when the thrust augmentation is 49.4000 cows. :diablo: This causes the thrust ratio when opens the thrust augmentation is 0.92, does not open when the thrust augmentation is 0.589. This “the glory” between the fighter aircraft thrust ratio disparity from approximately 15% drops with the equipment US standard F404-GE-IN20 engine to approximately 10%.
Uses the Russian engine other latent advantage is, it has an air vent to be allowed to cause the airplane realization thrust vector control. This kind of equipment has applied on the RD-33 engine, but the F404 engine only plans the installment. Certainly, US does this by no means is because lacks the technical strength.
Fire control system and weaponry
But on two kind of fighter aircrafts fire control radar operational capacities basically are possible to be same. If installs a infrared reconnaissance tracking device, and makes the pilot through the comprehensive display system to understand well the battlefield situation, possibly can enable the fighter aircraft to hold some superiority. The similar equipment most has the possibility to come from Russia, but has the satire significance is, Russia finally possibly is two kind of fighter aircrafts both provides the similar equipment. Also possibly can have the similar situation in the weaponry aspect, because “the glory” and “the owlet dragon” the type fighter aircraft majority weapon all originates from Russia. However, the Indian air force also possibly besides equips our country to develop “Astra” the type beyond line of sight missile, but also seeks equips France “the plum card” type air-to-air missile. (End)
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November 9, 2004 at 5:57 am