F-10B Improved Analysis: China's first-type "after the
fourth-generation" machine
March 2009, the Chinese Internet was the first time,
modified F-10 fighter pictures, users who subsequently called the
"F-10B". F-10B equipped with the most recent airborne phased array
radar images are exposed on the network.F-10A fighter then this compared to what
improvements? The main purpose of the development of F-10B, what
is? Netease will be exclusively military
analysis.
F-10B from the images the latest public opinion, can be
found in F-10B has been installed passive phased array radar, radar
picture yellow dot matrix face reality as black antenna, which is
judged as passive phased array radar the main sign.
Using airborne phased array radar reduces
RCS
F-10B the most obvious improvement is the most important
one is the use of a fixed front phased array radar, which slightly
tilted from the F-10B fuselage radome combination of lines can be
seen with. As to shoot radar waves through the waves from the radar
radome into the cabin, the machine scan the radar antenna and the
base structure of the complex between the reflection, superposition
and resonance, the re-direction of the reflected radio, radar cabin
become airborne radar sweep by machine the three resonant cavity fighter, one of great influence
on the whole head-RCS.
Thus the fixed front of the phased array radar, the
aircraft designer will generally be designed radar front tilt so
you can enter the tank to shoot radar radar radar by tilting the
front direction of the radar reflectivity to the
other , thereby greatly reducing the RCS radar cabin head for
the contribution of aircraft to improve the aircraft's stealth
characteristics. This is a type of aircraft to determine whether to adopt a
phased array airborne radar features.According to recent exposure on the network radome Open
J-10B showing the yellow front of the photo fixed antennas, has
been able to confirm the F-10B uses a phased array airborne
radar.
Made airborne active phased array radar development has
been completed
Phased array radar for everyone has been very familiar
with the phased array airborne radar by adjusting the
electromagnetic waves emitted by the different array elements to
achieve the phase difference between the electronic scanning radar
beam, relative to the mechanical scanning radar with detection
distance, scanning quickly,
multi-functional and immunity against interception so on
edge. Currently, the main fighter air power is still the main
machine sweeping radar equipment, but are beginning to modify the
phased array radar. F-10B is equipped with active or whether passive phased
array radar, can be said to follow the development of airborne
radar aircraft of the latest trend.
In 2008, the aircraft developed by lightning hospital with
completely independent intellectual property rights of the active
phased array radar has been successfully completed validation of an
aircraft flight. F-10B which uses active phased array airborne radar, there
are no technical problems, but just a benefit-cost ratio or
cost. Because China has not carried out passive phased array
radar technology and engineering development of a comprehensive
study, if the F-10B uses a passive phased array radar, it is likely
that the introduction of similar products in Russia and the
transmitter phase shifter technology, based
on developed. If the F-10B is used in active phased array radar, it's
the development of China as the Five Dynasties and machine results
of active phased array radar is used to improve fourth-generation
fighter, the overall performance of similar products should be able
to achieve the overall performance of Western.
Open until a new painting by J-10B, F-10B can be clearly
seen by the DSI intake.
China has more fighters in the use of DSI
inlet
F-10B Another notable feature is the original F-10A
supersonic inlet system tunable multi-wave conversion of
non-separated boundary layer, supersonic inlet channel, that DSI
inlet. Before the F-10B, China Xiaolong 04 aircraft has been used
in the domestic first DSI intake, the F-10B, the Chinese also used
in the Five Dynasties and the machine inlet
technology. This not only shows the mechanism of China for the DSI
inlet skilled master and engineering applications, but also shows
China's overall performance for the recognition of DSI
inlet.
F-10B enhanced the performance of transonic
BVRAC
DSI is based on conical inlet flow theory, generated by
wave theory: the characteristics of the conical flow itself, drum
kits exist on the surface method of compression and transverse
pressure gradient, there is equivalent to the combined effects of
both can be great part of the fuselage boundary layer blowing inlet estuary;
the same time the inlet through the drum kits drum kits produced by
three-dimensional cone surface to the supersonic shock wave into
the air down to subsonic, three-dimensional shock surface as more
relaxed, leading to the shock of the
engine surge may also come down; conical flow characteristics
also led to the inlet for the drum kit aircraft angle of attack and
sideslip angle is less sensitive to stability.
According to relevant data, drum kits even when the inlet
Mach 1.8 and 0.9 above to ensure that the total pressure recovery
coefficient. However, when the Mach number to 2, DSI inlet total
pressure recovery coefficient will drop to 0.87 or so, the
performance is still better to maintain the total pressure recovery
coefficient of 0.9 or more adjustable
inlet. Although the DSI the right end of the inlet part of the
flight envelope in the region as the total pressure recovery of
supersonic variable inlet, but to see the supersonic inlet is
adjustable to pay hundreds of kilograms in weight of the structure,
system complexity and reliability of the premise. DSI inlet to the supersonic F-10B although slightly worse
performance, but in exchange for the subsonic and transonic
performance envelope. From this point, said F-10A J-10B strengthened relative to
the BVR Air Combat Maneuvering transonic
performance.
J-10B cockpit before the increase in the photoelectric
sensor, which allows it to be implemented in the strong
interference of passive detection, the formation of additional
airborne radar.
Cockpit before the increase in photoelectric
sensor
F-10B in front of the cockpit to increase the
photoelectric sensor, the Su-27 layout with similar points of light
sensors. Photoelectric sensors for airborne fire control radar has
three obvious advantages: the ability to achieve passive detection,
target identification through imaging and able to work under
high-intensity electromagnetic
interference. There are also several drawbacks: the limited detection
range, performance, influenced by the weather, the laser distance
measuring devices used in the role of distance is very
limited.
I believe that the increase in F-10A F-10B had not used a
photoelectric sensor with the main intention is to confront the
world's most advanced fighter aircraft under the conditions of the
complex electromagnetic environment, when the airborne radar
ineffective because of interference, can have a completely
uninterrupted sensors can be used as supplement.
Although the photoelectric sensor target difficult to
achieve large-scale search, but under the radar detection mode
passive sources of interference are given accurate tracking and
identification of coarse coordinates the release of interference
with aircraft or enemy electronic warfare aircraft, and then bound
to the target data from the air to air
missile , under the conditions of complex electromagnetic silent
attack. From this point of view, F-10B in the demonstration phase,
the performance target set for the operations is very high, at
least ordinary fourth-generation fighter requirement for the
formation of large performance advantages, but also with the most
advanced fourth-generation variants fighters head-on confrontation.
F-10B in the tail and wings to increase the electronic
module and electronic pods (shown in red circle at, can be compared
with the F-10A), which showed increased F-10B high-intensity
focused electronic warfare environment, air superiority
capability.
E-tail e-bay and wing pods
F-10B at the top and the tail wing to increase the e-pod,
and more reflect the condition of the aircraft in operations under
complicated electromagnetic
considerations. Especially under the wing of a pair of electronic pods,
larger size and should be fixed or semi-fixed design, and takes up
under the wing of the most "gold" in the mount position, so unless
there is a high capacity for electronic warfare requirements, or do
not will pay such a high price. F-10B flight photos are not aware of looking up the pod
under the wing of a rail or hang bomb mechanism design, which is
likely after the installation of pods in the corresponding location
can not be linked to bomb or missile in order to hang on the need
to install special pod compatible system.
In the photo, the tail wing pods and front electronic
module compartment was gray with the same color radar, and other
parts of the pod body rust and yellow body paint and color, so
basic that there is gray pod antenna front-end. This arrangement of the antenna operating in passive mode,
with the tail to the top of the antenna together constitute the
three o'clock passive detection, will be better than conventional
radar warning device for more accurate determination of the
coordinates of enemy radar, frequency and waveform, a significant
increase in air perception of the electromagnetic spectrum; work in active
mode, you can tail, left and right with the means to achieve the
pod-style flashing active deception jamming, can effectively lead
to enemy radar and radar-guided angle decreased ability to lock off
the air to air missiles .
F-10B of the dressing with the phased array fire control
radar, optical sensors and electronic countermeasure pods to
comprehensive judgments, F-10B is aimed at the future
high-intensity, high-spectral-density operational environments, and
with the world's most advanced fighter jets to direct
confrontation air superiority fighter, but not the outside world has
been to strengthen the conjecture of a multi-purpose combat
capability modifications.This F-16 fighter jets with improvement ideas very
different.
F-10B is still used Russian-made AL-31FN engine, but may
soon be equipped with F-10B Taihang engine.
AL-31F performance has been in the "bottom"
level
According to F-10B can determine the basic picture is
still using the F-10A aircraft used by the Russian AL-31FN engine,
which can not be said to be F-10B's a great pity, will largely
affect the performance of the play of advanced
F-10B. AL-31F engine is fame, but in fact the third generation of
performance in the world, high-thrust turbofan engine performance
in the "bottom" level.AL-31F afterburning reached a relatively large 12.5 tons,
the Soviet Union to push than the standard 8 level, but the French
military in accordance with the same rigorous standards of China
national military standard computing, AL-31F in 300 flight hours
during the first turn of the 10 tons of thrust at about -11 tons, only 6.9 more than
push.
This F100 and F110 engines contemporary United States to
push more than 7.5 or so basic, so the improved performance to push
a far cry from more than 7.8, and China independently developed the
Taihang engine than the 7.1 training push / push operations
performance than the 7.5, there is a big gap.
Taihang engine soon or will be equipped with
F-10B
Since the successful development of the Taihang engine is
a critical period to the volume of equipment, exposure to a number
of reliability problems, so that F-10B not use more advanced stage
of domestic power. However, the Taihang engine equipped with F-11B, J-11BS
more and more pictures, especially the emphasis on the reliability
of carrier-based aircraft F-15, has recently been discovered photos
of the Taihang engine used, I believe the problem F-10B does not
require too much power long to resolve.
Indian Air Force Su-30MKI's total number reached 280
equipment, and the use of passive phased array fire control radar,
the front wing and vectored thrust, and other new
technologies. F-10B in large part because of China's development is to
confront these "after the fourth-generation"
fighters.
F-10B is not the main multi-purpose performance
enhancement
Available before the F-10B, F-10 media and magazines for
ideas to improve the general focus on how to increase the F-10
multi-strike capability and range of the. Appear on the network simulation maps most of the modified
F-10 to F-10 conformal fuel tanks installed and mounted under the
wing of a variety of ground attack
munitions. But now look, according to F-16 fighter aircraft
modification is the increasing ability of this fact to identify
multi-purpose F-10 will be along the same lines is the need to
re-examine the development of the.