Beyond Visual Range missile


Beyond Visual Range missile

A Beyond Visual Range missile usually refers to an air-to-air missile that is capable of engaging at ranges beyond 20 nautical miles (37 km). This range has been achieved using dual pulse rocket motors or booster rocket motor and ramjet sustainer motor.

In addition to the range capability, the missile must also be capable of tracking its target at this range or of acquiring the target in flight. Systems in which a mid course correction is transmitted to the missile have been used.

Early air-to-air missile used semi active radar guidance, that is the missile used the radiation produced by the launching aircraft to guide it to the target. The latest generation of BVR missiles use a combination of semi-active and active radar.

The first such missiles were relatively simple beam riding designs that were soon replaced by Semi-active radar homing (SARH). This is where the launching aircraft's radar is "locked" onto the target in a Single Target Track (STT) mode, directing a radar energy at the target that the missile seeker can "see" as it reflects off the target. The radar antenna must "illuminate" the target until impact. Missiles like the Raytheon AIM-7 Sparrow and Vympel R-27 (NATO designation AA-10 'Alamo') home in on the reflected radiation, much like a Laser-guided bomb homes in on the reflected laser radiation. Some of the longest range missiles in use today still use this technology.

The first air-to-air missile to introduce a terminal active seeker of its own was the AIM-54 Phoenix carried by the F-14 Tomcat, which entered service in 1972. This relieved the launch platform of the need to illuminate the target until impact putting it at risk. The Phoenix and its associated Tomcat radar, the AWG-9 was capable of multiple track and launch capability, which was unique to the Tomcat/Phoenix until the advent of AMRAAM in 1991. Newer fire-and-forget type missiles like the Raytheon AIM-120 AMRAAM and the Vympel R-77 (NATO designation AA-12 'Adder') instead use an Inertial navigation system (INS) combined with initial target information from the launching aircraft and updates from a one or two-way data link in order to launch beyond visual range, and then switch to a terminal homing mode, typically active radar guidance. These types of missiles have the advantage of not requiring the launching aircraft to illuminate the target with radar energy for the entire flight of the missile, and in fact do not require a radar lock to launch at all, only target tracking information. This gives the target less warning that a missile has been launched and also allows the launching aircraft to turn away once the missile is in its terminal homing phase or engage other aircraft. The very longest range missiles like the Hughes (now Raytheon) AIM-54 Phoenix missile and Vympel R-33 (NATO designation AA-9 'Amos') use this technique also.

Some variants of the Vympel R-27 use Semi-active radar homing (SARH) for the initial guidance and then passive infra-red guidance for the final stage. This type of missile requires active guidance for a longer part of the flight than the fire-and-forget type of missiles but will still guide to the target even if radar lock is broken in the crucial final seconds of the engagement and may be harder to spoof with chaff due to the dual-type guidance.

Astra missile is an active radar homing Beyond visual range air to air missile (BVRAAM)being developed by Defence Research and Development Organisation (DRDO), India. This is the first air-to-air missile developed by India and when tested successfully India will join a prestigious group of countries that are US, France,Israel,Japan,Russia,South Africa and China who have so far produced such advanced missiles. The single stage, solid fuelled 'Astra' missile is more advanced in its category than the contemporary BVR missiles and it is capable of engaging and destroying highly manoeuvrable supersonic aerial targets.

Despite many years of development, this class of weapon has never been tested in the environment for which it was designed, but has instead mostly been used against poorly equipped adversaries.

ee also

* Skyflash
* AMRAAM
* AIM-54 Phoenix
* Astra missile
* Vympel R-27
* Vympel R-33
* Vympel R-77
* MBDA Meteor
* Sky Sword II
* SD-10 BVRAAM

External links

* [http://www.janes.com/defence/news/jdw/jdw060831_1_n.shtml Meteor blazes path but challenges remain] Jane's Defence Weekly, 31 August 2006


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Beyond Visual Range — (engl. für: außerhalb der Sichtweite), abgekürzt BVR, ist eine Bezeichnung in der militärischen Luftfahrt für Objekte und Geschehnisse – sowohl in der Luft, wie am Boden – welche sich außerhalb der Sichtweite eines Piloten befinden, bzw.… …   Deutsch Wikipedia

  • beyond visual range — Out of sight of the unaided eye; usually refers to radar guided missile engagements. The downside to a BVR engagement is that without visual identification of the target the possibility of “friendly fire” increases …   Aviation dictionary

  • missile — Any object thrown, dropped, fired, launched, propelled, or otherwise projected with the purpose of striking a target. Short for ballistic missile or guided missile. The various types of missiles are air to air (short and/or close combat, medium… …   Aviation dictionary

  • Air-to-air missile — An air to air missile (AAM) is a guided missile fired from an aircraft for the purpose of destroying another aircraft. It is typically powered by one or more rocket motors, usually solid fuelled but sometimes liquid fuelled. Ramjet engines, as… …   Wikipedia

  • Astra missile — Infobox Weapon is missile=yes name=Astra caption=Artistic image of Astra. origin= IND type=Air to Air Missile used by= manufacturer=DRDO unit cost= propellant= production date=May 9, 2003 service= engine=Solid Fuel Rocket engine power= weight=154 …   Wikipedia

  • Python (missile) — Python 5 The Python 5 missile as displayed in the foreground with an older Shafrir 1 missile in the background Type Short range air to air missile …   Wikipedia

  • Nag (missile) — See also: Integrated Guided Missile Development Program#Nag missile system Nag Nag missile with the NAMICA in the background. Picture taken during DEFEXPO 2008 …   Wikipedia

  • Integrated Guided Missile Development Program — An Agni II during the Republic Day Parade in 2004 The Integrated Guided Missile Development Program (IGMDP) was an Indian Ministry of Defence program between the early 1980s and 2007 for the development of a comprehensive range of missiles,… …   Wikipedia

  • Dongfeng (missile) — The Dongfeng (Chinese: 东风; literally East Wind ) missile is a series of intermediate and intercontinental ballistic missiles operated by the People s Republic of China. Typically, the word Dongfeng is shortened to DF , so Dongfeng 9 is written as …   Wikipedia

  • Maitri (missile) — The Maitri missile project is a next generation Quick Reaction Surface to Air Missile (QRSAM) with a lethal hundred per cent kill probability. It is a short range (15km,9.3mi) surface to air point defense missile system. It should not be confused …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.