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www.Aviapress.com >  Books >  Archives-Press/Major Publ. > 

ARX-007 Tupolev Tu-142 (Navy variant of Tu-95) Long range anti-submarine aircraft book

Archives-Press/Major Publ. ARX-007 Tupolev Tu-142 (Navy variant of Tu-95) Long range anti-submarine aircraft book
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ARX-007 Tupolev Tu-142 (Navy variant of Tu-95) Long range anti-submarine aircraft book

Archives-Press/Major Publ. Tupolev Tu-142 (Navy variant of Tu-95) Long range anti-submarine aircraft book. Pic.1
Archives-Press/Major Publ. Tupolev Tu-142 (Navy variant of Tu-95) Long range anti-submarine aircraft book. Pic.1

Archives-Press/Major Publ. Tupolev Tu-142 (Navy variant of Tu-95) Long range anti-submarine aircraft book. Pic.2
Archives-Press/Major Publ. Tupolev Tu-142 (Navy variant of Tu-95) Long range anti-submarine aircraft book. Pic.2

Archives-Press/Major Publ. Tupolev Tu-142 (Navy variant of Tu-95) Long range anti-submarine aircraft book. Pic.3
Archives-Press/Major Publ. Tupolev Tu-142 (Navy variant of Tu-95) Long range anti-submarine aircraft book. Pic.3

Archives-Press/Major Publ. Tupolev Tu-142 (Navy variant of Tu-95) Long range anti-submarine aircraft book. Pic.4
Archives-Press/Major Publ. Tupolev Tu-142 (Navy variant of Tu-95) Long range anti-submarine aircraft book. Pic.4

Archives-Press/Major Publ. Tupolev Tu-142 (Navy variant of Tu-95) Long range anti-submarine aircraft book. Pic.5
Archives-Press/Major Publ. Tupolev Tu-142 (Navy variant of Tu-95) Long range anti-submarine aircraft book. Pic.5

Archives-Press/Major Publ. Tupolev Tu-142 (Navy variant of Tu-95) Long range anti-submarine aircraft book. Pic.6
Archives-Press/Major Publ. Tupolev Tu-142 (Navy variant of Tu-95) Long range anti-submarine aircraft book. Pic.6

Contents
Tupolev Tu-142 aircraft for the Berkut-95 system
Searching-Aiming System Berkut-95
Tupolev Tu-142 plus Berkut-95
Tupolev Tu-142 on service
Tupolev Tu-142 with the letter ?
Tupolev Tu-142M for Korshun system
Searching-Aiming System 2 Korshun-Kaira
Tupolev Tu-142 plus 2 Korshun-Kaira
Tupolev Tu-142 plus 2 Korshun-K
Tupolev Tu-142M on service
Modification of Searching-Aiming System
48 pages, 81 photos, large insert with 1:144 plans

Summary
Having nuclear submarines as the primary target Tupolev's Tu-142 brightly shows Soviet ASW facilities development. Built on the basis of the Tu-95RC new aircraft was extensively redesigned. This had improved wing aerodynamic shape and efficient double-slotted flaps. The forward fuselage was extended from the second experimental aircraft. Increased rudder chord, larger elevators and movable stabilizer were intended for better control-ability. Furthermore, GU-54A non-reversible boosters and AP-15RZ autopilot were introduced. Initial production series of 12 aircraft possessed «rough field» landing gear with 12-wheel bogies in enlarged inboard engine nacelle «tails», subsequently removed. The prototype (bu. # 4200) was first flown on 18 July 1968 in hands of crew under guidance of I. K. Vedernikov. It was fitted with four NK-12MV turboprops driving AV-60P counterrotating autofeatheres. Later Tu-142s had strengthened four-wheel landing gear bogies, larger flaps area and were powered with AV-60K propellers.
The first Tu-142s and Ilyushin IL-38 featured the same searching/targeting systems (STS) with «Berkut» search radar, RGB-1 and RGB-2 sound operating band buoys, ANP-3V navigation system, TsVM-263 computer and J-band navigation/weather radar under the «chin». Tu-142's difference laid in two times bigger flight range and two times larger sonobuoys payload only. It was the second type of aircraft fitted with digital computer for secondary data processing. But the anti-submarine complex couldn't show high detecting capability.
Tu-142M's enlarged flight deck floor to provide pilots with more comfortable environment was unusual feature for Soviet aviation designers. Uprated with airborne magnetometer ASW complex still had quite weak searching capability. MAD's small operational range and minimum flight level of 300 m resulted in slight improvement over the earlier aircraft version. Infrasound sonobuoys and explosive sound sources introduction could help to get better performance. However, the trials were made in a hurry. So, «green» equipment entered into productional and further reaserches and upgrades took a lot of time. Virtually, new ASW complex creation was forthcoming later.
Tupolev design bureau was far sighted enough to see that their aircraft could be developed further. Airframe modifications on the subsequent version of the aeroplane were minor. Fitting of improved canopy, additional elevator balance tabs, another rudder and ailerons trailing edges shape and refuelling probe inclined at the negative angle of 1,5 degrees with longitudinal axis, were about the only external changes. Furthermore, new reclining seats were introduced. The main variations were made in the ASW equipment.
Early types of sonobuoys employment gave way to the improved infrasound detection buoys usable with explosive sound sources. The aircraft featured modernized «Korshun» STS operating with NPK-142 navigation system. The last one interacted with radar and autopilot. The Tu-142M with «Korshun» system possessed equipment providing under-water and above-water situation determination (POTO). Furthermore, it enabled cooperating forces and the aircraft position assessment together with exchange of information in secret channels.
The next Tu-142M with «2 Korshun-Kaira» version included the installation of updates STS, MMS-106 «Ladoga» magnetometer in fin-mounted fairing and Nerchinsk sonar set. All of them are combined with the NPK-142 and autopilot. The STS incorporates airborne copmlex with radar, sonar system, digital computer and tactical situation representation subsystem. The aircraft is compatible with RGB-15 and RGB-75 sonobuoys and with directional RGB-25s (passive) and RGB-55As (active). Small aviation bombs are used as explosive sound sources. «Kaira-P» sonar system is the most important feature. It provides target data processing, RGB-55A buoys control and joint with POTO system tactical information representation. Computer subsystem processes and translates data to be used by NPK-142 in aircraft and armament control.
From crew members point of view who flew in the Tu-142MZ on many occasions found it both functional and easy to handle in flight and possessing much more comfortable cockpits environment. It is fitted with more powerful NK-12MP propeller-turbine engines.
This aircraft version has further improved ASW and «Sayany» ECM equipment. It featured new «Korshun-N» (KNN) STS and «Zarechye» sonar system which resulted in higher ability to detect, locate and track submarines. The Tu-142MZ is equipped with RGB-16, RGB-26 and RGB-36 sonobuoys. This is final productional ASW platform.
Having «Berkut» STS early Tu-142's were intended to show Soviet Naval aviation antisubmarine capability. The aircraft could reach underwater missile carriers patrol areas, but enemy air defence resistance wasn't taken into account then.
Foreign military specialists noted, that Soviet aviation possessed long range aeroplanes showing quite low speeds. These can be armed with torpedoes, nuclear depth charges, sonobuoys, magnetometers and computers for acoustic data processing. But, the aircraft aren't fitted with powerful selfprotection systems. Hence, they are known to be escorted for their mission.
Sonobuoys provide continuous submarines searching at significant areas. However, the efficiency depends on their quantity, data processing systems perfection and environment conditions. Unfortunally, Soviet electronics couldn't create essential basis for the ASW systems and computers. Featuring advanced avionics US Navy's anti-submarine aviation even shows quite good efficiency being directed in more or less fixed area only. So, the specialists are not very impressed with these aircraft generally and long range ASW aviation operational capability out of own air defence area is believed to be problematical.
It is therefore wonder that the last Tu-142 version proved its versatility. Many years after the initial orders great interest was shown in the Tu-142MZ as it fitted the requirements of strategic missile submarines defence during their missions. Despite of high subsequent operating costs it finds favor with potential customers.
In a final bid to develop the Tu-142M design still showing high performance Tupolev design bureau constructed a Tu-142MR with VLF communications avionics to maintain on-station/all-ocean link between national command authorities and nuclear missile armed submarines under most operating conditions. Its airframe is an modified Tu-142MZ's one. Large ventral pod for VLF suspended wire antenna, several kilometers long, was installed under centre fuselage in weapon bay area. The Tu-142MR features undernose fairing, fin-tip IR warning pod and SATCOM dome aft of flight deck canopy.
Obsolete Tu-95RC were suggested to be replaced by new Tu-142MRC, but no order was forthcoming for this. Soviet Navy commanders supposed they would manage with space satellites only.

Illustrations
1.Tupolev Tu-142
2.Tupolev Tu-142
3.RGB-25 (top) and RGB-16 sonobuoys
4.Tupolev Tu-142M canopy provides 1,5 degrees greater downward inflight one. Two serial Tu-142s of 1971 year production batch were separated for Korshun system installation.Compared to the Tu-95RG and Tu-142, these possessed 2 m longer forward pressurized cabin, 0,18 m wider fuselage sections near pilots seats and bigger canopy
5.Indian Navy Tupolev Tu-142M. Indian Navy was interested in the Tu-142 purchase late in 1980s. It was thought to be a good idea to send a number of obsolete Tu-142s to that country. But India liked to possess more advanced aircraft. There was the release of 8 aircraft named Tu-142ME to the Indian Navy. "E" letter means export version of the aeroplane which differed slightly from the original one in having reduced combat means set
6.The tail-turred of the Tupolev Tu-142MZ