Get And Sign Air Force Vehicle Maintenance Forms 1999-2021

No ,Now at this time you cant change the preferences!!As per my knowledge i suggest you to go for SSB without any tension.If you clear it as well as medicals then you just join the academy as it is .After joining the academy you can change your service according to your choice .So now just prepare for your SSB.All the best !!!!

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There is a fundamental difference between two airplanes. Tu-160 is more comparable in application with B-1a, not B-1b.Both B-1a and Tu-160 are strategic bombers with max speed of about Ma=2, altitude of about 20 km, intercontinental range and nuclear cruise missile payload. Both aircrafts were developed in ’70s eith ’70 technology and concepts. Only 4 B-1a prototypes was produced.After cancellation of Valkyrie, Ma=3 class bomber because of cost and conclusion even such an extreme performance of Ma=3 speed and altitude of 24km don’t guarantee safety of the bomber US Strategic Air Command changed requirements. Extremely low flight with terrain avoidance and reduction of radar observability was only possible solution. B-1b variant was born.Whole construction was optimized to low flight, received unregulated air intakes what reduced effective surface of radar reflection and reduced max speed to about Ma=1.25 which was anyway even more than possible to achieve during low flight by any aircraft due to dense air.Real difference between B-1b and Tu-160 is B-1b was built to penetrate modern air defense on low altitude with supersonic speed, rely on stealth and strike with supersonic nuclear missiles and nuclear bombs when Tu-160 was built to deliver long range cruise missiles from outside air defense.When far more advanced B-2a entered service in US SAC and took more dangerous role of penetrating air defense B-1b was degraded to the role of delivering cruise missiles from outside air defense - the role similar to Tu-160. Russia didn’t manage to replace Tu-160 in similar way.Prototype T-4MS “Project 200” by Sukhoi OKBSoviet Union also had their advanced bomber concept named T-4MS "Project 200" from Sukhoi OKB designed to penetrate air defence with Ma=3 at 24km or Ma-1 at low altitude but it was canceled early on because the project failed to met designed parameters and lack of funds. Cheap and conventional Tu-160 based on Tu-144 passenger airplane was selected, but it was clear from the beginning it won’t be able to penetrate even moderately modern air defense -it was not fast nor stealthy. General of the USSR Air Force mentioned the following about the Tu-160 project, - “You are practically offering to us a passenger airplane”.Rival of B-1a variant - passenger airplane B-747–400 modified to carry long range maneuvering missiles from outside enemy’s air defenceToday both B-1b and Tu-160M2 are completely outdated in symetric battlefield and unable to penetrate even moderately modern air defense. Both of them can only perform auxiliary functions of launching long range maneuvering missiles from beyond the signNow of modern air defense (this task can be performed even by modified passenger air liner B-747–400) or can be used in asymmetric conflicts against an opponent who does not have air defense. During the penetration of moderately modern air defense at low altitude B-1b has big advantage due to smaller dimensions, a much smaller effective surface of radar reflection and smaller heat emission, the speed at low altitude is identical for both planes.Effective surface of radar reflection

In terms of aerodynamics, the F-22A Raptor is an upgraded verison of the F-15 Eagle, while the J-20 is an upgraded version of the J-10B.The F-22A Raptor is fairly short-ranged with ~800km combat radius, at least considering the operational distances in the Pacific theatre. It is a reasonable estimate that the J-20 could have as much as 40% more internal fuel capacity than the F-22 and could perform longer combat missions with a ~1,100km combat radius.The longer J-20 fuselage improves fineness ratio, with benefits for transonic drag. The wing and control surface layout of the J-20 is also very different from the F-22A. J-20's leading edge root extensions project from the trapezoidal wings almost all the way to canard fore- planes, which contribute to better maneuverability.The J-20's canards contribute positively to the total lift of the aircraft, and along with the forward fuselage strakes, contribute to a huge surplus of lift that is necessary to horse the plane around at very low airspeeds and in a very high alpha angle of Attack. Both of these factors should minimize mach tuck, an aerodynamic phenomena that pitches the nose down as the plane approaches supersonic speed. The F-22A does not possess canards and rely entirely on its high-powered engines to vary lift. While some observers have suggested canards are incompatible with stealth, foreplanes were present on early F-35 designs and engineers who worked on the program have stated the final quad-tail configuration was no stealthier than the earlier canard-delta design.J-20′s hinged shaft rotational missile pylon allows its side weapon bay door to close after the pylon rotates out of the bay, unlike the off-axis missile launch rack on the F-22A, in which the weapon bay doors have to remain open after the missile pops out in order to get a target lock-on. This side weapons bay launch mechanism will give the J-20 a three-second advantage over the F-22A when firing Air-To-Air Missiles.The F-22 Raptor launches its missile first and lock on to its target later, limiting its No-Escape-Zone (NEZ) to abt 50 km, while the J-20 will lock on first before missile launch, thus extending distance of NEZ.The J-20 has an edge in the avionics suite. Because of the late starting point of Chinese aviation development, modern Chinese air force jets were able to leverage on post-2000 era technology. A cutting edge avionics suite greatly increase the success rate of a fighter jet's future aerial engagements and is the key to winning air battles in the future.UPDATE: The first batch of LRIP J-20s shall possess the ability for off-boresight launching of AAMs.(see 0.33 - 0.36 of this Lockheed Martin Weapons commercial : Laser Weapon Systems Capabilities for Air, Land and Sea Platforms . This ability is a critical advantage during within-visual range combat. The F-22A will only possess off-boresight launch capability in 2020.In summary, the F-22A Raptor may possess the most powerful engines to ensure its survivability in harsh operational conditions, but the J-20's overall creative configuration helps reduce more drag and avoid engineering difficulties such as managing structural strength, and its off-boresight launching of AAMs capability gives it a signNow edge during air-to-air combat. This is extremely crucial in an all-stealth encounter, where stealth fighter jets will only detect each other within 100km and WVR combat will be the main mode of engagement.