Berliner-Joyce OJ-2

     Designed in 1930 to meet a USN requirement for an observation biplane, the OJ-2 had a very brief two-year service record from 1933-1935.  The plane was able to be catapult launched, and some planes were fitted with a center-line fuselage float and two wing floats in place of wheeled landing gear.  The forward MG was fitted to the upper starboard wing, while the observer had a trainable MG.  Ordnance was carried on three hardpoints under the wings and fuselage.  Some planes were used as late as 1940 in the Naval Reserves.  A total of 39 planes were received by the USN.

 

Subassemblies: Recon Fighter chassis +2; Recon Fighter wings with Biplane option +2 and 3 fixed wheels +0, OR 1 Medium Weapon pod [Body:U] +1 and 2 Mini Weapon pods [Wings:U] +0.

Powertrain:  298-kW Aerial HP gasoline engine with 298-kW old prop and 180-gallon fuel tank [Body]; 4,000-kW battery.

Occ.:  2 XCS Body

Cargo:  0 Body

 

Armor             F         RL           B           T           U

Body:           1/2C     1/2C       1/2C      1/2C      1/2C

Wings:         1/2C     1/2C       1/2C      1/2C      1/2C

Wheels:         2/3       2/3          2/3         2/3        2/3

 

Weaponry:

Aircraft LMG/7.62mm Browning LMG [Wing:F] (500 rounds).

Aircraft LMG/7.62mm Browning LMG [Body:B] (500 rounds).

 

Equipment:

Body:  Casemate mount, three hardpoints totaling 500 lbs [Body and Wings].

 

Statistics:

Size:  26'x34'x11'     Payload:  0.69 tons       Lwt.:  1.86 tons

Volume:  96             Maint.:  81 hours          Cost:  $6,116

HT:  6.    HPs:  15 Body, 50 each Wing, 2 each Wheel.

aSpeed:  154    aAccel:  4     aDecel:  10   aMR:  2.5   aSR:  1

Stall Speed: 38 mph.  Take Off Run: 250 yards.  Catapult Launch: 210 yards.  Landing Run: 250 yards.

+2 aSpeed per empty hardpoint.

gSpeed:  203     gAccel:  10    gDecel:  10   gMR:  0.5    gSR:  2

Ground Pressure: Very High.  1/8 Off-Road Speed.

Or as a floatplane:

wSpeed:  30     wAccel:  4     wDecel:  5 (7)   wMR:  0.25    wSR:  3

Draft: 0.9 feet.  Flotation Rating: 5,045 lbs.

 

Design Notes:

     Historical wing area was 284 sf.  Design loaded weight was 3,757 lbs.; it was increased 1% to the historical.  Design aSpeed was 154 mph with loaded hardpoints.  Historical values were used for all calculations when available.  Fuel capacity was based on a rough calculation between range (530 miles) at cruising speed and design fuel consumption.  MG load-outs are a guess.  Adding floats to the design (one Medium Weapon pod and two Mini Weapon pods) increases design weight by 866 lbs.; wSpeed is 60% of stall speed, requiring calm waters and a slight tailwind to get airborne.

 

Variants:

     The XOJ-1 prototype featured a 224-kW engine.

     The XOJ-3 had a cockpit canopy.  It crashed in March 1934 and was rebuilt as a standard OJ-2.

 

From the Aerodrome for GURPS

© 2008 by Jim Antonicic