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Lockheed PV-2D Harpoon


SubRyan
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Model: Lockheed PV-2D Harpoon
 
Technical Description: Attack bomber, anti-shipping, anti-submarine, maritime patrol


Visual Aspects

Spoiler

PM7CxLq.jpg

 

 

Short History: As soon as production of the Navy version of the Ventura began at Burbank, Jack Wassal, Lockheed-Vega's Chief Engineer, began design work on a version which would better suit the Navy's needs. Wingspan was increased to 75 fl which substantially reduced the wing loading. Over a ton of payload was added, and fuel capacity was increased. A completely redesigned tail group resulted in a marked improvement in both ground handling and singe-engine control, two of the Venturas weak points. Wassal claimed a loss of 6 mph in top speed, but speed was actually reduced by 20-30 mph compared to the PV-1. 


Three follow-on production contracts for 908 Harpoons (BuNos 37535/37634, 84057/84589 and 102001/102275) were awarded but only thirty-five were delivered before the cancellation of contracts after VJ-Day. Forward-firing armament was increased to eight 0.50-in guns and these late-production aircraft were designated PV-2Ds. Final delivery took place in September 1945 to bring to an end the production of Models 37 / 137 / 237 Venturas and Model 15 Harpoons. PV-2D's would continue to serve in Naval Reserve squadrons and with the JMSDF

 

Configuration: Attack

 

Production Status

First flight: 1944
Introduction year: 1945

Status: retired

Number built: 35

 

Crew Data
Number of crew: 5
Roles of crew: pilot, copilot - navigator, radar operator, turret gunner, radio operator
 

Engine Data
Manufacturer:  Pratt & Whitney
Name:  R-2800-31
Number of engines: 2
Number of cylinders: 18

Configuration: radial

Cooling: air cooled
Supercharger / Turbo: single stage, two speed supercharger
Fuel: 100/130 octane
Dry weight:  2280 lb
Prop shaft ratio:  0.5625

Impeller / gear ratio: 7.5:1, 9.89:1

Cylinder compression ratio: 6.65:1

Fuel consumption:  300 gallons/hr @ military power (low blower)

 

Fuel Data

Fuel tanks: 1326 gallons

 

Oil Data
Oil tanks: 88 gallons

 

Power Data
Takeoff / Military Power (SL): 2000 hp @ 2700 rpm and 52 inHg [5 min limit] (no RAM air)

Military Power (1500 ft): 2000 hp @ 2700 rpm and 51 inHg [5 min limit] (no RAM air)

Military Power (13500 ft): 1600 hp @ 2700 rpm and 47 inHg [5 min limit] (no RAM air)

Normal Rated Power (5300 ft): 1600 hp @ 2400 rpm and 41.5 inHg (no RAM air)

Normal Rated Power (13200 ft): 1450 hp @ 2400 rpm and 42.5 inHg [60 min limit in high blower] (no RAM air)


Propeller Data
Manufacturer: Hamilton Standard
Type: Hydromatic
Number of blades: 3
Blade diameter: 10 ft 2 in
 
Basic Geometric Data
Length: 51 ft 9.5 in
Wing span: 75 ft
Wing area (including ailerons): 686 ft2
Height: 11 ft 11 in
Flap area (each):  ft2
Elevator area (including tab):  ft2
Rudder area (each): ft2
Aileron area (each): ft2

 

Weight Data
Empty weight: 21028 lbs

Gross weight: 33000 lbs

 
General Performance Data
Maximum speed: 282 mph (454 km/hr)

Minimum speed (gross weight): 

Landing speed: 
Cruising speed: 171 mph (275 km/hr)
Service ceiling: 23900 ft
Range: 1790 miles

Gear maximum speed: 173 mph (278 mph)

Landing flaps maximum speed: 138 mph (222 km/hr)

IAS limit: 356 mph (572 km/hr)

Takeoff run with takeoff flaps: 

 

Max Speed (33000 lbs)
.. at SL                                          unknown

.. at 13700 ft                                 282 mph (454 km/hr)                   


Rate of Climb (33000 lbs)
.. at SL                                          1910 fpm (10 m/s)

 

Time to altitude (33000 lbs)

.. to 3000 feet                               2 minutes

.. to 6000 feet                               3 minutes 42 seconds

.. to 9000 feet                               5 minutes 48 seconds

.. to 12000 feet                             8 minutes 36 seconds

.. to 15000 feet                             11 minutes 30 seconds


Armament
Guns:

  • 8 x 12.7mm M2 Browning machine guns in nose
  • 2 x 12.7mm M2 Browning machine guns in dorsal Martin 250CE-13B turret (800 rounds)
  • 4 x 12.7mm M2 Browning machine guns in DGP-1 gunpods (2 per gunpod)

Bombs / torpedo / rockets (bomb bay):

  • 1 x 2000 lb torpedo, or
  • 4 x 1000 lb bombs, or
  • 4 x 650 lb bombs, or
  • 6 x 500 lb bombs, or
  • 6 x 325 lb bombs, or
  • 2 x Tiny Tim rockets

Bombs (wings):

  • 2 x 1000 lb, or
  • 2 x 650 lb, or
  • 2 x 500 lb, or
  • 2 x 325 lb

Rockets:

  • 8x HVAR rockets on wing zero length rocket launchers

Ammunition


Notes

 

The weight might be for the PV-2

 

Here are the four remaining PV-2D's


Sources
1. Lockheed Aircraft since 1913

2. (Squadron/Signal Publications) PV-1 in Action

3. (AN 01-55ED-1) Pilot's Handbook for Navy Model PV-2 PV-2C PV-2D Airplanes, 1 December 1945, Revised 15 April 1946

Edited by SubRyan

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