Grumman A-6 Intruder
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aeronewsline :: Accueil :: Histoire :: Aéronefs 1956 à 1965
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Re: Grumman A-6 Intruder
The much more advanced and substantially redesigned EA-6B was developed beginning in 1966 as a replacement for [Vous devez être inscrit et connecté pour voir ce lien] for the U.S. Navy.
The forward fuselage was lengthened to create a rear area for a larger four-seat cockpit, and an antenna fairing was added to the tip of its [Vous devez être inscrit et connecté pour voir ce lien].
[Vous devez être inscrit et connecté pour voir ce lien] The Prowler first flew on 25 May 1968, and it entered service on [Vous devez être inscrit et connecté pour voir ce lien] in July 1971.
Three prototype EA-6Bs were converted from A-6As, and five EA-6Bs were developmental airplanes.
A total of 170 EA-6B production aircraft were manufactured from 1966 through 1991.
The forward fuselage was lengthened to create a rear area for a larger four-seat cockpit, and an antenna fairing was added to the tip of its [Vous devez être inscrit et connecté pour voir ce lien].
[Vous devez être inscrit et connecté pour voir ce lien] The Prowler first flew on 25 May 1968, and it entered service on [Vous devez être inscrit et connecté pour voir ce lien] in July 1971.
Three prototype EA-6Bs were converted from A-6As, and five EA-6Bs were developmental airplanes.
A total of 170 EA-6B production aircraft were manufactured from 1966 through 1991.
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Re: Grumman A-6 Intruder
The EA-6B Prowler is powered by two [Vous devez être inscrit et connecté pour voir ce lien], and it is capable of high subsonic speeds.
Due to its extensive electronic warfare operations, and the aircraft's age (produced until 1991), the EA-6B is a high-maintenance aircraft, and it also has undergone more frequent equipment upgrades than any other aircraft in
the Navy or Marine Corps.
Although designed as an electronic warfare and command-and-control aircraft for [Vous devez être inscrit et connecté pour voir ce lien] missions, the EA-6B is also capable of attacking some surface targets on its own, in particular enemy [Vous devez être inscrit et connecté pour voir ce lien] and [Vous devez être inscrit et connecté pour voir ce lien] launchers.
In addition, the EA-6B is capable of gathering [Vous devez être inscrit et connecté pour voir ce lien].
Due to its extensive electronic warfare operations, and the aircraft's age (produced until 1991), the EA-6B is a high-maintenance aircraft, and it also has undergone more frequent equipment upgrades than any other aircraft in
the Navy or Marine Corps.
Although designed as an electronic warfare and command-and-control aircraft for [Vous devez être inscrit et connecté pour voir ce lien] missions, the EA-6B is also capable of attacking some surface targets on its own, in particular enemy [Vous devez être inscrit et connecté pour voir ce lien] and [Vous devez être inscrit et connecté pour voir ce lien] launchers.
In addition, the EA-6B is capable of gathering [Vous devez être inscrit et connecté pour voir ce lien].
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Re: Grumman A-6 Intruder
The EA-6B Prowler has been continually upgraded over the years.
The first of which was named "expanded capability" (EXCAP) beginning in 1973.
Then came "improved capability" (ICAP) in 1976 and ICAP II in 1980.
The ICAP II upgrade provided the EA-6B with the capability of firing [Vous devez être inscrit et connecté pour voir ce lien] and [Vous devez être inscrit et connecté pour voir ce lien] missiles.
The first of which was named "expanded capability" (EXCAP) beginning in 1973.
Then came "improved capability" (ICAP) in 1976 and ICAP II in 1980.
The ICAP II upgrade provided the EA-6B with the capability of firing [Vous devez être inscrit et connecté pour voir ce lien] and [Vous devez être inscrit et connecté pour voir ce lien] missiles.
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Re: Grumman A-6 Intruder
Advanced Capability EA-6B
The Advanced Capability EA-6B Prowler (ADVCAP) was a development program initiated to improve the flying qualities of the EA-6B and to upgrade the [Vous devez être inscrit et connecté pour voir ce lien] and [Vous devez être inscrit et connecté pour voir ce lien] systems.
The intention was to modify all EA-6Bs into the ADVCAP configuration, however the program was removed from the Fiscal Year 1995 budget due to financial pressure from competing [Vous devez être inscrit et connecté pour voir ce lien] acquisition programs.
The Advanced Capability EA-6B Prowler (ADVCAP) was a development program initiated to improve the flying qualities of the EA-6B and to upgrade the [Vous devez être inscrit et connecté pour voir ce lien] and [Vous devez être inscrit et connecté pour voir ce lien] systems.
The intention was to modify all EA-6Bs into the ADVCAP configuration, however the program was removed from the Fiscal Year 1995 budget due to financial pressure from competing [Vous devez être inscrit et connecté pour voir ce lien] acquisition programs.
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Re: Grumman A-6 Intruder
The ADVCAP development program was initiated in the late 1980s and was broken into three distinct phases: Full-Scale Development (FSD), Vehicle Enhancement Program (VEP) and the Avionics Improvement Program (AIP).
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Re: Grumman A-6 Intruder
FSD served primarily to evaluate the new AN/ALQ-149 Electronic Warfare System.
The program utilized a slightly modified EA-6B to house the new system.
The program utilized a slightly modified EA-6B to house the new system.
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Re: Grumman A-6 Intruder
The VEP added numerous changes to the aircraft to address deficiencies with the original EA-6B flying qualities, particularly
lateral-directional problems that hampered recovery from out-of-control flight.
Bureau Number 158542 was used. Changes included:
lateral-directional problems that hampered recovery from out-of-control flight.
Bureau Number 158542 was used. Changes included:
- Leading edge [Vous devez être inscrit et connecté pour voir ce lien] (to improve directional stability)
- Fin pod extension (to improve directional stability)
- [Vous devez être inscrit et connecté pour voir ce lien] (to improve slow speed lateral control)
- Re-contoured leading edge slats and trailing edge flaps (to compensate for an increase in gross weight)
- Two additional wing stations on the outer wing panel (for [Vous devez être inscrit et connecté pour voir ce lien] only)
- New J52-P-409 engines (increased thrust by 2,000 lbf (8.9 kN) per engine)
- New digital Standard Automatic Flight Control System (SAFCS)
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Re: Grumman A-6 Intruder
The added modifications increased the aircraft gross weight approximately 2,000 pound (900 kg) and shifted the center of gravity 3% MAC aft of the baseline EA-6B.
When operating at sustained high [Vous devez être inscrit et connecté pour voir ce lien], fuel migration would cause additional shifts in CG with the result that
the aircraft had slightly negative longitudinal static stability.
Results of flight tests of the new configuration showed greatly improved flying qualities and the rearward shift of the CG had minimal impact.
When operating at sustained high [Vous devez être inscrit et connecté pour voir ce lien], fuel migration would cause additional shifts in CG with the result that
the aircraft had slightly negative longitudinal static stability.
Results of flight tests of the new configuration showed greatly improved flying qualities and the rearward shift of the CG had minimal impact.
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Re: Grumman A-6 Intruder
The AIP prototype (bureau number 158547) represented the final ADVCAP configuration, incorporating all of the FSD and VEP modifications plus a completely new avionics suite which added multi-function displays to all crew positions, a [Vous devez être inscrit et connecté pour voir ce lien] for the pilot, and dual [Vous devez être inscrit et connecté pour voir ce lien]/[Vous devez être inscrit et connecté pour voir ce lien].
The initial joint test phase between the contractor and the US Navy test pilots completed successfully with few deficiencies.
The initial joint test phase between the contractor and the US Navy test pilots completed successfully with few deficiencies.
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