Yoyodyne Propulsion Systems

The Yoyodyne Division (also known as Yoyodyne Propulsion Systems or YPS) was a shipbuilding entity.

In the 22nd century the YPS pulse fusion was utilized in DY-500-class colony ships. (TNG: "Up The Long Ladder")

In the 24th century the Division built starships for the United Federation of Planets at various shipyards including 40 Eridani A Starfleet Construction Yards, Copernicus Ship Yards, and San Francisco Fleet Yards.

The firm had an office on Deep Space 9's Promenade. (Star Trek: Deep Space Nine)

The company's name was listed on a Promenade directory map seen in many episodes of Deep Space Nine.

Ships built

Class	Ship Name	Location	Date	References
Constellation-class	USS Hathaway	Luna	Unknown	TNG: "Peak Performance"
Miranda-class	USS Brattain	40 Eridani A	22519.5	TNG: "Night Terrors"
Nebula-class	USS Phoenix	40 Eridani	40250.5	TNG: "The Wounded"
Nebula-class	USS Sutherland	San Francisco	44820.5	TNG: "Redemption II"

The existence of this contractor is not mentioned in dialogue, but is derived from the text of the starship dedication plaques and display graphics. It is a reference to The Adventures of Buckaroo Banzai Across the Eighth Dimension!, which, in turn, took the name from Thomas Pynchon's novels V. and The Crying of Lot 49 (Star Trek: The Next Generation Companion)

See also

• Yoyodyne pulse fusion

External links

• Yoyodyne at Wikipedia
• Yoyodyne Propulsion Systems at Memory Beta, the wiki for licensed Star Trek works