Delta 4000

Delta 4000

Launch of a Delta 4925 (Delta 196) with INSAT-1D
Function
Project cost
Cost per launch
Cost per year
Size
Stages
Capacity
Payload to LEO
Altitude
	3,400 kg (7,500 lb)
Volume
Payload to GTO
Altitude
	1,200 kg (2,600 lb)
Volume
Associated rockets
Family
Comparable	Delta 5000, Delta II
Launch history
Status
Launch sites
Total launches
Success(es)
FailureTemplate:Pluralize from text
Partial failureTemplate:Pluralize from text
Notable outcomeTemplate:Pluralize from text
Landings
First flight
Last flight
Boosters – Castor 4A
No. boosters	9
Empty mass
Gross mass
Propellant mass
Specific impulse
Burn time
Propellant
First stage – Thor/Delta ELT
Empty mass
Gross mass
Propellant mass
Specific impulse
Burn time
Propellant
Second stage – Delta K
Empty mass
Gross mass
Propellant mass
Specific impulse
Burn time
Propellant
Third stage – PAM-D (optional)
Empty mass
Gross mass
Propellant mass
Specific impulse
Burn time
Propellant
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The Delta 4000 series was an American expendable launch system which was used to conduct two orbital launches in 1989 and 1990. It was a member of the Delta family of rockets. Although several variants were put forward, only the Delta 4925 was launched. The designations used a four digit numerical code to store information on the configuration of the rocket. It was built from a combination of spare parts left over from earlier Delta rockets, which were being retired, and parts from the Delta II 6000-series, which was just entering service.

Configuration

The first stage was the MB-3-III powered Extended Long Tank Thor, previously flown on the 1000-series. Nine Castor-4A solid rocket boosters were attached to increase thrust at lift-off, replacing the less powerful Castor-4 boosters used on the 3000 series. The Delta-K was used as a second stage. A Star-48B PAM-D was used as a third stage, to boost payloads into geosynchronous transfer orbit.

Launches

Two Delta 4000 launches occurred from Launch Complex 17B at Cape Canaveral. The first launched Marco Polo 1 for BSkyB, and the second launched INSAT-1D for the Indian Space Research Organisation. Both were successful.

Delta 4000 series launches

S/N	Version	Date	Location	Payload
Delta 187	Delta 4925	27.08.1989	LC-17B	Marco Polo 1
Delta 196	Delta 4925	12.06.1990	LC-17B	INSAT-1D