Heinkel
He 51
Designed in secret under the guise of
being a civil transport, the He 51 was revealed to Europe in 1935 as the first
fighter plane of the newly formed Luftwaffe.
Although of moderate performance, the plane formed the backbone of the
early German air force, and in 1936 was sent with German units to support the
Nationalists in the Spanish Civil War.
As its weaknesses were revealed by the I-15 and more advanced fighters,
the He 51 began serving in the dive-bombing and close support roles. By the beginning of WWII, the He 51 was a
second-line aircraft, and served mostly as a trainer.
The He 51 has a crew of one. It could be fitted with a 13.2-gallon drop
tank to increase range from 354 miles to 460 miles. As the plane changed roles, it was fitted with external bomb
racks for six 22-lb. bombs. The He 51
burns 28 gallons of aviation fuel per hour at routine usage. A full load of fuel and ammo costs $18.80
(+$2.64 for the drop tank).
Heinkel
He 51B-1
Subassemblies:
Light Fighter chassis +3; Recon Fighter wings with Biplane option +2; 3 fixed
wheels +0.
Powertrain: 559-kW HP gasoline engine with 559-kW prop
and 44-gallon fuel tank [Body].
Occ.: 1 XCS Body
Cargo: 10 Body
Armor F RL B T U
Body: 2/2C 2/2C 2/2C 2/2C 2/2C
Wings: 2/2C 2/2C 2/2C 2/2C 2/2C
Wheels: 2/3 2/3 2/3 2/3 2/3
Weaponry:
2xAircraft
LMG/7.92 mm MG 17 [Body:F] (500 rounds each).*
*Linked.
Equipment:
Body: Medium radio transmitter and receiver, 13.2
gallon drop tank. Wings: Six 22-lb. of hardpoints.
Statistics:
Size: 28'x36'x11' Payload: 0.48
tons Lwt.: 2.09 tons
Volume: 144
Maint.: 82 hours Cost:
$5,965
HT: 7.
HPs: 50 Body, 100 each Wing, 5
each Wheel.
aSpeed: 205
aAccel: 7 aDecel:
17 aMR: 4.5
aSR: 1
Stall
Speed: 52 mph. Take-Off Run 208 yards. Landing Run 270 yards.
gSpeed: 262
gAccel: 13 gDecel: 10 gMR:
0.5 gSR: 2
Ground
Pressure: Very High. 1/8 Off-Road
Speed.
Design
Notes:
Historical wing area was 293 sf. A 45-gallon main tank and 15-gallon drop
tank were purchased; the historical capacities are shown. The weight, cost and HPs of the wings were
doubled to increase design weight. The
design Empty weight was within 1 lb. of the historical. The design uses a "modern" aerial
propeller, but performance calculations are closer to historical using 2.5x
thrust of an old prop, so aSpeed and aAccel were calculated in this way. aSpeed was reduced a further 6 mph to the
historical. Design loaded weight was
within 5% of the historical. All
performance calculations were based on historical values for wing area and
loaded weight.
Variants:
The He 49a, -b, and -c were all
prototypes leading up to the -d, which was then designated the He 51. Work on the He 49 series progressed from
1932 to 1935.
The He 51A-1 (1935) was the initial
production model. 150 built. The -B was a single floatplane conversion.
The He 51B-2 was a floatplane
version. 46 built.
The He 51C was the dedicated ground
attack version with bomb racks. 79
built for the Spanish Nationalists and 21 for German coastal defense.
From the Aerodrome for GURPS
© 2008 by Jim Antonicic