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The
^ith’ *tIUCI her miles(of the carrier. The car- ttakes n ■ 8r°uP s high ambient noise best. As a 'Ve Prospcution difficult at s°r of r-n result> active sonar is the sen- SH-1 r °!ce f°r the inner zone. The
nots> alio • . ween u'P points at 100
area than d t0 cover a much larger ^ The nn aubul’'m°unted sonar.
J'ke prom er °f dips is not limited, un- ^ its accuCUtl°n wbb active sonobuoys. high. racy 'n active-sonar contact is
Navv\ fFA'125 Rough Raiders, the formed in’m F/A'18 squadron, was Hornet ~ ^ 6arly 1980s' The F/A->8 missions "!bmed the fi8hler and attack SV-22 n.nt° °ne squadron. When the P|oyedinmrey tllt"rotor aircraft is de- ASW ‘ C rn)d-1990s, it will afford the of missiommUTnity a simbar combination
c°Pter ASW m^°Uld “mbine the hcli" and thP r , . squadron’s inner-zone
r°n’s outer*6 Wlng Asw squad- mission ofZOne missions into the VHS -■ 1 carrier battle group ASW.
°ri-3 Sea iuuc. ms
deploy th; ln§ 's the best platform tc
► It canS aCtive sonar:
advantanearVbe dePtb °f its sonar to take ^ ft can tr ° . environmental conditions. hn°ts> au unsit between dip points at 100
Th
’be Sf[ w'll soon be replaced by
tesents a , helicoPter. The SH-60F repine of ~-vear jump in technology. 'ncrease i 6,1tnaj°r improvements is the depth to "i so d'PP'n8 sonar’s maximum s°nar Can ’ 99 feet. At that depth, the "dth its in rcacb die deep sound channel addition ^reased ranges. Paired with the lrig capaiyi- lniProvcd sonobuoy process- fhat \yjji 1 lly and a new coupler system, lnner-zrmma^e tbe SH-60F a formidable
c The^e hencaP0n-.
Cann°t on CoPter inner-zone platforms reasons pfate 'n (he outer zone for two transitSp "|St’ tbe SH-60F has a slow s,raints a , anb has on-station time conquer Zon datUm at the outer edge of the + the tin? Wouid be almost an hour old ?Cc°tid th d'e dipper arrived on station. n the out 3re severely buoy-limited, 'be garneer zone, passive is the name of "'ouid n t h 6 bu°ys carried in the helos rtlaintain° °e ,nearly enough to gain and the o Pass'Ve contact. h°ise pUter zone is free of battle group sired mlns(;quently. passive is the de- 0ther rc. . °d °f prosecution—if for no Jtfirihc as°n than that an unalerted subtly eva6asier t0 track and attack than a b'atf0rrnSlVe °ne. The current outer-zone ls the S-3A Viking, which is a good complement to the SH-3H and SH- 60F. Its 400+-knot transit speed makes for a quick trip to the outer zone. It carries five times as many sonobuoys as the helos, making extended tracking with buoys feasible. The computer-assisted buoy processors on board can easily detect the sub. Radar and electronic support measures capability give the S-3 a dimension that the helicopters lack. And its seven-hour endurance makes the trip to the outer zone worthwhile.
The S-3 is good for outer-zone passive prosecution, but may be limited in the active inner-zone role. Since it has a fixed number of buoys on board, some of its passive capability is sacrificed to carry active buoys. Even then, there may not be enough active buoys on board to gain contact and launch an attack. The attack launched off an active buoy will not be as accurate as one off the dipping sonar be-
Flying into the future of ASW is the tilt-rotor SV-22. With its ability to hover and deploy active sonar—like the SH-3H—and to fly at 270 knots and carry numerous buoys—like the S-3—the SV-22 is forcing both those platforms into the past.
+di
ln8s / October 1987
145
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The SV-22 will also have to
carr>er'
________ ___ ____ todo
Again, why train the VS crewmen ^
train
rertise
cause of plot stab and on-top errors, buoy drift, and weapon placement errors.
With its unique capabilities, the SV-22 will not only replace the S-3B, but should take sole responsibility for ASW around the carrier battle group. The SV-22 truly represents the best of both ASW aviation worlds. It will be able to hover, deploy an active sonar, and actively track and attack a sub in the inner zone as the SH-60F does. Yet it will also be able to transit to the outer zone at 270 knots and carry enough buoys to track a sub passively. The ASW Osprey will be able to process passive buoys at least as well as the S-3, making it one of the best passive platforms available.
As fleet experience with the Osprey increases, the tactics from both ASW aviation communities will be combined and will evolve. In addition, several new tactics will develop. For example: The SV-22 could fly to the outer zone, gain contact and localize with passive buoys, dip on the passive contact and gain active contact, launch an attack off of the more accurate active dipping sonar contact, and kill the sub before she gets within 200 miles of the carrier.
Deception could also be employed. Active sonar is normally only used close to the battle group. Because of the long counterdetection range of the active sonar, submarines can home in on the active sonar to find the carrier. The SV-22 could fly to a point several hundred miles away from the carrier and use its active sonar to draw the submarine away from the carrier.
Last but not least, who will fly the SV- 22? The logical response is: helicopter pilots and aircrewmen. The V-22 is a helicopter that can fly like a plane, not an airplane that can hover. The difference might seem trivial, but it is n°1' ,er SV-22 will be operated in the heIic°F mode to launch and recover from * e -n. and to deploy the active sonar. Th^P^, ciples of power-available, P ef. required, hover-in-ground effect, ^ out-of-ground effect, and vorteX Jay state will still apply. These are eve^.jot considerations for the helicopter F' . Why retrain all of the fixed-wing * lots to do what HS pilots do The ball, line-up, and angle-c)t-a ^ expertise of the VS pilots can be P use in other fixed-wing commu Leave the hovering to the experts- the HS community’s secondary of search and rescue for the something the HS crewmen daily? The VS crewman’s exP^Up3trol passive tactics can be used in t e
squadron community. njties
Combining the two cornII'oVe the makes sense and will greatly impr ^ttle ASW capability of the carrier group. _
Lieutenant Toombs graduated with a B - ’ sjty |fl cal engineering from Arizona State 0 -ator
1983. After being designated a nava aS .it 1985, he is currently in his first 0eet ASW helicopter pilot with Helicopter An > Squadron 8.
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