This is a weekly posting with GURPS vehicles (and the like) to the
GURPSnet mailing list. I grant the permission for all non-commercial
redistribution of my work, but I would like to know if you put it on
a website or the like. My site is down for rebuilding, but sooner or
later the old stuff should reappear at omeyer.gmxhome.de
Onno Meyer, 2007-09-02
Anachronistic Attack Helicopter v1.0 (TL6)
Copyright 2007 by Onno Meyer
In some alternate history stories, one side finds efficient uses for
historical technologies. In other novels, genuine time travelers bring
modern concepts with them. Both helicopters and wire-guided anti-tank
missiles were available in the 1940s, waiting to be combined ...
The attack helicopter has a sleek airframe with the pilot and gunner
in a tandem cockpit. The armament consists of a 40mm automatic grenade
launcher and eight missiles under the small wings. The helicopter has
a combat radius of 150 miles and a ferry range of more than 300 miles.
In an alternative history game, the attack helicopter could cover the
flanks of early panzer divisions or fly ACC over allied tank columns.
At routine travel speed, the engine burns 80 gallons of aviation gas
per hour. A full load of fuel and ammunition is $96,456.
Subassemblies: Body +3, two Skids +0, two standard Wings +1, Rotor +0,
full-rotation Open Mount +0.
Powertrain: 1,600-kW top-and-tail rotor drivetrain; 1,600-kW aerial
turbocharged HP gas engine; 1,000-kWs lead-acid batteries.
Fuel: 240 gallons avgas (fire 14).
Occ: 2 NCS.
Armor F RL B T U
Body: 3/10 3/10 3/10 3/10 3/10
Skids: 3/5 3/5 3/5 3/5 3/5
Wings: 3/5 3/5 3/5 3/5 3/5
Rotor: 3/10 3/10 3/10 3/10 3/10
Weaponry
40mm AGL [OM:F] (200 rounds) +0.
Equipment
Body: Two medium-range radios; intercom; navigation instruments; IFF.
Open Mount: 0.5-mile searchlight. Wings: Four 100-lb. hardpoints each.
Statistics
Size: 56'x48'x16' Payload: 1.5 tons Lwt.: 6 tons
Volume: 359 cf Maint.: 26 hrs. Price: $587,670
HT: 12. HP: 450 Body, 30 each Skid, 90 each Wing, 180 Rotor, 40 Open
Mount
aSpeed: 150 aAccel: 4 aDecel: 22 aMR: 5.5 aSR: 2
Stall Speed 0. Ceiling 2,300 yards.
Design Notes
Body is 300 cf. Skids are 15 cf. Wings are 16 cf. Rotor is 6 cf. Open
Mount is 6 cf. Structure is medium and expensive. Armor is advanced
metal. Light, self-sealing tanks. Mechanical controls with duplicate
maneuver controls. 4.375 cf empty space in body. 200 rounds of 40mm HE
in the Open Mount. Empty weight is 9,000 lbs.
Weapon Weight Volume Cost Power WPS VPS CPS TL
40mm AGL 120 2.4 $1,600 - 1.2 0.012 $1.8(1) 6
170mm ATGM N/A N/A N/A - 100 2 $12,000 6
Ammo type: (1) HE, also fires HEAT at 1.5x cost.
Weapon Ammo Malf. Type Damage SS Acc 1/2D Max RoF
40mm AGL HE crit. exp. 3d[4d] 20 10 290 2,300 8
HEAT crit. exp. 2d(10) 20 10 290 2,300 8
Weapon Guid Malf. Type Damage SS Spd End Min Max
170mm ATGM WG 15 exp. 6d*9(10) 20 300 12 200 3,600
The vehicle uses the design rules from GURPS Vehicles [2nd edition,
3rd printing, Dec 2004 errata], WWII (only the aerial engine and cruise
speed/fuel consumption rules, not the entire modular system), VXii (the
armor volume and ceiling rules), and the text format from Vehicles Lite.
Next Week: A cargo variant.
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