MAKER  F7U-4  Name

  The story which didn't happen ... outside Atlantic Air Combat  
  See also : AAC Data Sheet
Illustrations :
Illustrations :
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The PBM Mariner was a patrol-bomber flying boat which entered service with the US Navy in 1940. Developped as an ASW platform (PBM-5S) and also as an amphibian aircrafts (the PBM-5A), it was used post war by a few countries (see: PBM Seaplane) :

Country = = QTY Aircraft Name 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967

USN: VP53 NA ASW (---) PBM5A Mariner 1948 1949

USN: VP53 NA ASW (---) PBM5S Mariner 1950 1956 1956                      

Netherlands NA ASW (17) PBM5A Mariner 1955 1960 >> >> >> >> 1960

Argentina NA ASW (9) PBM5 Mariner 1955 1964 >> >> >> >> >> >> >> >> 1964
Uruguay NA ASW (3) PBM5S2 Mariner 1956 1965 1956 >> >> >> >> >> >> >> >> 1965

Topografica NA TA 2 PBM5 Mariner 1958 ??     1958                  

Only used in their colony of

The use made by Topografica, an Portuguese airline, is yet to be defined.   Initiated in 1958, the company suffered the loss of one of their two aircrafts after a couple of months of activities in november 1958 so it might have ended operations of their PBM5 at the same time.


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About the Be-6 Madge, most of the data get here, after a painful, long and sometimes funny work with automatic translator (the acronyms in Russian are most of times "translated" in absurd in other terms, in other not-related acronyms or in impossible full texts phrases, "noncircular" should be omnidirectional, "machine" on this context is clearly "aircraft", and not "car", and a lot more):

Maximum height 6100 meters/médium.
Máximum speed sea level = 203 knots.
Máximum speed médium height = 224.
Cruise speed sea level = 135.
Cruise speed médium height = 140.
Máximum range, unloaded = 2700 nm.

But the website is a very good site, full of details and with interesting historical and technical descriptions. Worth of visit for all with Russian planes interests.

Only 123 Be-6 build. In service 1953. First only employed for sea search and reconnaissance, later adapted and modified for ASW and employed 1954-1969 ASW variant named in full Be-6PLO. ASW variant converted and in service in Black and Baltic Seas in 1954, in Northern Fleet in 1955, in Pacific Fleet in 1956-1957 (in Pacific Fleet many planes converted first only with MAD, Baku systems and sonobuoys added later).

Radar is PSBN-M (sometimes called Look Two, also employed by Il-28, Yak-26, Tu-14. Surface search, some 27 nm range, PD=30?), in a retractable dustbin underfuselage. MAD first located in the wing leading edge, later relocated on tail, deleting two of the five 23mm defensive guns.

The usual weapons descriptions about bombs are correct, but the torpedos employed were apparently only high altitude dropping unguided antiship torpedoes, 2xBT-45-54 (or sometimes traslated as 45-54VT), not ASW torpedoes, and less the AT-1 (1962) (too weak to be launched from planes, only launched from helicopters) or the SET-40/MGT-2 (1962), only employed from surface ships. More data about the torpedoes here or elsewhere, no contradictions detected about this issue: http://navweaps.com/Weapons/WTRussian_post-WWII.htm

But the more trascendent detail is Be-6PLO was not only equipped with MAD, also has from 1954 the Baku system for sonobuoys (same Bakú system also employed at least by Mi-4M/ME ASW variants), with only 18 channels, and with original capacity only for carry underwing 16 RGBN or RGBN-M passive omnidirectional sonobuoys with some 0,4-0,5 nm range on Harpoon HCE/HUCE (2 meters long, 45 Kg weight, 4 in each of the 4 hardpoints).
The Be-6PLO has not bomb bay, but later another 27 sonobuoys of the same type were carried into the fuselage and discharged though hatches.

About the ASW weapons employed, from the 16xMPLAB-100 load underwing (apparently designed 1940 and introduced 1944, weight 100 Kg) was developed the PLAB-MK (1955?) of 7,54 kg overall weight, and 0,74 kg high explosive.
A Be-6 can load underwing 2, 4 or 6 PLAB-MK pods with 57xPLAB-MK each container pod, weighing each pod 490 Kg.
2/4/6x57 PLAB-MK containers, 490 Kg each.
Usual loadouts are 16 x MPLAB-100 underwing+27xsonobuoys in the fuselage, or 4x57x PLAB-MK+27 sonobuoys in the fuselage (6x57x PLAB-MK is at practical effects an overload), or more usually 2x57x PLAB-MK underwing+6/12xSonobuoys underwing+27xSonobuoys into the fuselage.

About Russian airborne depth charges:
http://bazalt.ru/ru/o_predpriyatii/istoriya/ MPLAB-100 in service date 1944.

More details about his sucessor Be-12 here: http://www.be-12.info/eng/history/

Curiously in Command CMANO the Be-6 is depicted with loadouts very similar to IL-38, with some 216+ sonobuouys of more modern types, as BM-1, BM-2, BM-3.

General Specifications

While there was no lack of structural differences between the prototypes, the pre-production and production aircrafts, their respective specifications are short noted below.   The AAC P6M2A remains close to the actual aircrafts.  Radar and engine specs to be defined later as "standard" AAC items of equipment.

Genre     Seaplane                
Sub-Genre     Vintage                
Carrier.Capable     YES/NO                
Launch=No.catap     YES/NO -              
Propulsion:     Piston Jet Turbine Rocket          
Length     metre or Imp 0.00m              
Span     metre or Imp 0.00m              
Height     metre or Imp 0.00m              
Speed:rotation     knot:F15*1.0


Speed:takeoff     knot:F35*1.2


Speed:max     knot


Speed:cruise     knot 000.kn              
Speed:stall/F00     knot 00.kn              
Speed:stall/F15     knot 00.kn              
Speed:stall/F35     knot 00.kn              
Speed:approach     knot:F35*1.4 00.kn              
Speed:landing     knot 00.kn              
Climb.rate     feet/minute 0000.ft/m              
Ceiling     feet 0000.ft              
TakeOff.Run     metre 000.m              
LandingRun Brakes   metre 000.m              
LaindingRun Reverse   metre -              
LaindingRun Chute   metre -              
Avionics:Radar     ID                
Avionics:IRST     ID                
Avionics:Warning     ID                
Engine-1.ID     ID ID              
Engine-1.Nbr   Q Total 1              
Engine-1.Pwr.Max Military   hp or lbf 0.hp              
Engine-1.Pwr.Xtra Afterbrn   hp or lbf 0.hp              
Engine:Propeller Diam   metre or Imp 0.00m              
Engine:Propeller Blades   number 1              
Engine-1:SFC1 Mass   lbs/hr*hp 0.000              
Engine-1:SFC2 Volume   gal/hr*lbf 0.000              
Engine-1:SFC1 Mass   lbs/hr*hp -              
Engine-1:SFC2 Volume   gal/hr*lbf -              
Engine-1:Reverse     YES/NO                
IFR:boom Fixed   YES/NO                
IFR:boom Retract   YES/NO                
IFR:receptacle     YES/NO                
IFR:receptacle Doors   YES/NO                
Air.Brakes     YES/NO                
Flaps     YES/NO                
Landing.Gear     YES/NO                
Landing.Gear Retract   YES/NO                
Arresting.Hook     YES/NO                
Brake.Chute     YES/NO                
Powered.Wingfold     YES/NO                
Canopy.Opening InFlight   YES/NO                
Fire.Extinguisers Engines   YES/NO                
Bomb/Cargo.Doors     YES/NO                
Search.Light     YES/NO                
Egress.Procedure     Eject/Bail                
INTERNAL WEAPONS                    
Recce.Pack Inbuilt   YES/NO                
Guns:fwd.firing/T1 cal Q Gun.ID                
Guns:fwd.firing/T2 cal Q Gun.ID                
Guns:fwd.firing/T3 cal Q Gun.ID                
Gun.Turret:Nose cal Q Gun.ID                
Gun.Turret:Dorsal cal Q Gun.ID                
Gun.Turret:Ventral cal Q Gun.ID                
Gun.Turret:Waist cal Q Gun.ID                
Gun.Turret:Tail cal Q Gun.ID                
FFAR ID   FFAR.ID                
Fuel:Internal Std   Imp.Gal                
Fuel:Internal Extra   Imp.Gal                
WEIGHTS & LOADS                    
Weight:Empty     lb                
Crew: 200 lb/@ Q lb                
Fuel:Internal 0000.gal ×7.6 lb                
Guns:fwd.firing/T1 000.rpg Q lb                
Guns:fwd.firing/T2 000.rpg Q lb                
Guns:fwd.firing/T3 000.rpg Q lb                
Gun.Turret:Nose 000.rpg Q lb                
Gun.Turret:Dorsal 000.rpg Q lb                
Gun.Turret:Ventral 000.rpg Q lb                
Gun.Turret:Waist 000.rpg Q lb                
Gun.Turret:Tail 000.rpg Q lb                
FFAR Q Q lb                
Payload:Internal     lb                
Pylon:Wing Tip port T1                
HVAR:   port R1 R3 R5 R7                
Pylon:Wing Outer port W5                
Pylon:Wing Central port W3                
Pylon:Wing Inner port W1                
Pylon:Fuselage Outer port F3                
Pylon:Fuselage Inner port F1                
Pylon:Fuselage Central   F0                
Pylon:Fuselage Inner stb F2                
Pylon:Fuselage Outer stb F4                
Pylon:Wing Inner stb W2                
Pylon:Wing Central stb W4                
Pylon:Wing Outer stb W6                
HVAR:   stb R2 R4 R6 R8                
Pylon:Wing Tip stb T2                
Bomb/Cargo.Bay Wings port B1                
Bomb/Cargo.Bay Fusel fwd BF                
Bomb/Cargo.Bay Fusel ctrl BC                
Bomb/Cargo.Bay Fusel aft BA                
Bomb/Cargo.Bay Wings stb B2                
Passengers 260 lb/@ Q lb                
Weight:Total     lb                
Weight:MTOW     lb - - - - - - - -
SPECIAL LOADS                    
Weight:Empty     lb                

PBM-5S 2253 gal fuel capacity is based on BuAer drawings showing 2702 US gal (+   786 US gal in bomb bay cells).
P5M2    2342 gal fuel capacity is based on BuAer drawings showing 2809 US gal (+ 1160 US gal in bomb bay cells)
SFC is then based upon these factors.  Cruise power and fuel weight ratios are AAC's standard (see: Measurements)

PBM5   : 2100hp × 2 × 66% × 0.34lb/hp/hr × [2362Nm÷130Kn=18.1669 hr] = 17122 lb ÷7.6lb/gal = 2253 gal (revised)

P5M2   : 3400hp × 2 × 66% × 0.29lb/hp/hr × [2070Nm÷151Kn=13.6755 hr] = 17799 lb ÷7.6lb/gal = 2342 gal (revised)

P-40E 281 rounds per gun
P-51B&C 280 outboard 350 inboard guns
P-51D 400 inboard and 270 middle and outboard guns
P-47D 260 to 425

F6F-3 400 RPG
F4U 390 RPG

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