Viper (Six Flags AstroWorld)

Roller coaster in the United States
Watch the on-ride POV
Six Flags AstroWorld
Location Houston, Texas, USA
Coordinates 29°40′33″N 95°24′24″W / 29.675776°N 95.406716°W / 29.675776; -95.406716
Park section Oriental Village
Status Defunct
Operated 1989 to October 30, 2005
Rider height 42 inch minimum
Six Flags St. Louis
Name Jet Scream
Location Eureka, Missouri, USA
Operated April 4, 1981 to 1988
Replaced by Batman The Ride
Manufacturer Schwarzkopf
Product Looping Star
Designer / calculations Ing-. Büro Stengel GmbH
Type Steel
Track layout Figure-8
Riders per train 28
Hourly capacity 1700
Propulsion Chain lift hill
Area 252.6 feet × 103.3 feet
Height 80.4 feet
Top speed 47.8 mph
Length 1942.3 feet
Inversions 1

Viper was a steel roller coaster which operated at two Six Flags parks. These parks were Six Flags AstroWorld and Six Flags St. Louis.


The roller coaster initially opened at Six Flags St. Louis on April 4, 1981 and was called Jet Scream.[1] It was closed in 1988 and sent to Six Flags AstroWorld, where it opened the following year as Viper.[2] It was closed and demolished with the park in the fall of 2005.[3]



The ride featured a tunnel and a single vertical loop.

Color scheme

The ride was painted blue when it originally opened, but it was repainted green when it was relocated.


2 trains with 7 cars per train. In each car, riders are arranged 2 across in 2 rows, for a total of 28 riders per train.



  1. "Jetscream to zoom at Six Flags". The Rock Island Argus.
  2. AstroWorld 1989 brochure
  3. "For AstroWorld, the ride is over".

External links

  • Viper on the Roller Coaster DataBase.

Articles on Six Flags AstroWorld
Articles on Six Flags St. Louis