Steve Jackson Games - Site Navigation
Home General Info Follow Us Search Illuminator Store Forums What's New Other Games Ogre GURPS Munchkin Our Games: Home

Go Back   Steve Jackson Games Forums > Roleplaying > GURPS

Thread Tools Display Modes
Old 06-02-2010, 04:28 AM   #1
copeab's Avatar
Join Date: Mar 2005
Location: near Houston
Default [WWII] Pitcairn PA-19 autogyro [USA]

Pitcairn PA-19 autogyro
Copyright 2010 by Brandon Cope

Most early autogyros seated one or two men in open cockpits. The PA-19 of 1932 was quite different, capable of carrying up to five men in a fully enclosed cabin. It used wings for stability (a fully tilting rotor-head for control would come in a couple of years). Only four were built before financial problems of the era forced Pitcairn to cease production.

The PA-19 is an ideal aircraft for a small party in a Cliffhangers campaign and perhaps in a slightly weird WWII campaign.

The PA-19 had a crew of one and uses 14 gallons of aviation gas per hour at routine usage.

Subassemblies: Large Helicopter chassis +3, Recon Wings +2, Rotors -1, three fixed wheels +0.
P&P: 310-kW HP aerial gasoline engine with 310-kW old prop and 102-gallon standard fuel tank [Body]; 2,000-kW batteries.
Occ: 1 CS, 4 PS Cargo: 0.5 Body

Body/Wings: 2/2C
Rotor: 4/10
Wheels: 3/5

Body: Medium radio receiver and transmitter, navigation instruments, autopilot.

Size: 26'x51'x15'
Payload: 0.83 tons
Lwt: 2.31 tons
Volume: 264
Maint.: 78 hours
Price: $6,600

HT: 12
HP: 270 Body, 60 Rotors, 25 each Wing, 7 each Wheel

aSpeed: 120
aAccel: 3
aDecel: 9
aMR: 2.25
aSR: 2
Stall: 34 mph

Design Notes
Design speed was 116 mph. To better match the historical performance of autogyros, rotor area was raised to the 1,5 power for for determining top speed and to the 1.75 power for determining stall speed. Takeoff (246 yards) and landing (530 yards) distances are also far longer than is proper for an autogyro. A suggestion is to drop the takeoff run to 1/3 this and the landing run to 1/10.

Like other autogyros, the stall speed works differently than from fixed-wing aircraft. Below 34 miles per hour, the rotors begin losing lift but, unlike lift from a wing, it is not lost suddenly; the autogyro would simply autorotate down as it lost forward speed and make a (relatively) safe landing.

Because the chassis was too small (but the next larger, the Huge Helicopter, was far too large), a Large Weapon subassembly was “added” to the chassis. It's stats (cost, weight and HP) were divided by two to better match the lighter chassis build. Subassembly HP were added to chassis HPs, as well as surface area added to chassis surface area. Armor is expensive, to better match the chassis,
A generous and sadistic GM,
Brandon Cope

GURPS 3e stuff:

Last edited by copeab; 06-02-2010 at 04:38 AM. Reason: corrected aMR and aDecel
copeab is offline   Reply With Quote

airplane, autogyro, cliffhangers, usa, wwii

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Fnords are Off
[IMG] code is Off
HTML code is Off

Forum Jump

All times are GMT -6. The time now is 06:42 PM.

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2018, vBulletin Solutions, Inc.