Delta 4 – Page 17 – Spaceflight Now

Delta 4 rocket evolving to upgraded main engine

March 27, 2015 Justin Ray

When the next Delta 4 rocket flies in July, as well as all future ones to come, the enhanced RS-68A main engine will power the boosters off the launch pad.

Photos: More shots of Delta 4 liftoff

March 26, 2015 Justin Ray

The United Launch Alliance Delta 4 rocket roars off the pad with the Global Positioning System 2F-9 satellite. Photos by ULA.

Recap story: New bird flies for GPS navigation network

March 25, 2015 Justin Ray

Climbing away from Earth on the power of its liquid hydrogen-fueled main engine and twin solid rockets, a Delta 4 booster successfully launched a new Global Positioning System satellite Wednesday to benefit U.S. military operations and civilian society as a whole.

Photos: Delta 4’s foggy launch

March 25, 2015 Justin Ray

The 721,000-pound United Launch Alliance Delta 4 rocket launches on-time at 2:36 p.m. EDT Wednesday into a deck of low-hanging clouds over Complex 37 at Cape Canaveral Air Force Station carrying the GPS 2F-9 navigation satellite.

Video: Delta 4 lifts off

March 25, 2015 Justin Ray

A United Launch Alliance Delta 4 rocket was launched on-time today at 2:36 p.m. EDT carrying a new Global Positioning System spacecraft to advance the navigation network with every launch.

Live coverage: Delta 4 rocket launches with GPS satellite

March 25, 2015 Justin Ray

A United Launch Alliance Delta 4 rocket lifted off Wednesday at 2:36 p.m. EDT (1836 GMT) from Cape Canaveral on a mission to place into orbit a fresh satellite for the Global Positioning System.

Photos: Delta 4 awaits blastoff

March 24, 2015 Justin Ray

The United Launch Alliance Delta 4 rocket sits peacefully inside its mobile service gantry on Tuesday afternoon, one day before its scheduled launch of the GPS 2F-9 navigation satellite.

Preview: 10 months, 4 launches to finish GPS Block 2F deployment

March 22, 2015 Justin Ray

The final year of launches in the current breed of Global Positioning System navigation satellites kicks off Wednesday afternoon aboard a Delta 4 rocket from Cape Canaveral.

Delta 4-Heavy selected for launch of solar probe

March 18, 2015 Stephen Clark

A NASA spacecraft that will fly closer to the sun than any mission before will launch on a Delta 4-Heavy rocket in 2018, requiring a boost from the largest active launcher in the U.S. inventory and repeated flybys around Venus to reach an operating post inside the solar atmosphere.

Stats: Delta 4 history and manifest

March 18, 2015 Justin Ray

Here’s a look by the numbers of the previous Delta 4 flight history and the remaining flights of the rocket named Delta.