N-II (rocket)

N-II (rocket)

The N-II rocket
Function	Carrier rocket
Manufacturer	Mitsubishi Heavy Industries
Country of origin	United States (design)  Japan (production)
Size
Height	35 metres (115 ft)
Diameter	2.44 metres (8.0 ft)
Mass	132,690 kilograms (292,500 lb)
Stages	2 or 3
Capacity
Payload to LEO	2,000 kilograms (4,400 lb)
Payload to GTO	730 kilograms (1,600 lb)
Associated rockets
Family	Delta
Launch history
Status	Retired
Launch sites	LA-N, Tanegashima
Total launches	8
Successes	8
First flight	11 February 1981
Last flight	19 February 1987
Boosters (Stage 0) - Castor 2
No boosters	9
Engines	1 TX-354-3
Thrust	258.9 kilonewtons (58,200 lbf)
Specific impulse	262 sec
Burn time	37 seconds
Fuel	Solid
First Stage - Thor-ELT
Engines	1 MB-3-3
Thrust	866.7 kilonewtons (194,800 lbf)
Specific impulse	290 sec
Burn time	270 seconds
Fuel	RP-1/LOX
Second Stage - Delta-F
Engines	1 AJ-10-118F
Thrust	41.3 kilonewtons (9,300 lbf)
Specific impulse	280 sec
Burn time	335 seconds
Fuel	HNO3/UDMH
Third Stage (optional) - Star-37E
Engines	1 solid
Thrust	68 kilonewtons (15,000 lbf)
Specific impulse	284 sec
Burn time	42 seconds
Fuel	Solid
Third Stage (alternative, optional) - Burner-2
Engines	1 solid
Thrust	43.6 kilonewtons (9,800 lbf)
Specific impulse	285 sec
Burn time	42 seconds
Fuel	Solid

The N-II or N-2 was a derivative of the American Delta rocket, produced under licence in Japan. It used a Thor-ELT first stage, a Delta-F second stage, nine Castor SRMs, and on most flights either a Star-37E or Burner-2 upper stage, identical to the US Delta 0100 series configurations. Eight were launched between 1981 and 1987, before it was replaced by the H-I, which featured Japanese-produced upper stages. All eight launches were successful.

Launch history [edit]

See also [edit]

• Comparison of orbital launchers families
• Delta rocket
• H-I
• H-II
• H-IIA
• N-I rocket
• PGM-17 Thor

References [edit]

• Wade, Mark. "Delta". Encyclopedia Astronautica. Retrieved 2008-08-31. 
• McDowell, Jonathan. "Thor". Orbital and Suborbital Launch Database. Jonathan's Space Report. Retrieved 2008-08-31. 
• Krebs, Gunter. "N-2". Gunter's Space Page. Retrieved 2008-08-31. 

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v t e Thor and Delta rockets PGM-17 Thor Thor family Delta family Rockets Thor Thor Thor-Able Thor-Ablestar Thor-Agena Thor-Burner Thor-Delta Thor DSV-2 Thor DSV-2U Thorad-Agena Delta Alphabetical Delta A Delta B Delta C Delta D Delta E Delta F Delta G Delta J Delta L Delta M Delta N Numerical Delta 0100 Delta 1000 Delta 2000 Delta 3000 Delta 4000 Delta 5000 Delta 6000 Delta 7000 Delta 8000 Delta 9000 Modern Delta II Delta III Delta IV Export N-I N-II H-I Launch sites Canaveral (S)LC-17 LC-18B SLC-37B Johnston LE-1 LE-2 Tanegashima Osaki Vandenberg SLC-1 SLC-2 SLC-3 SLC-6 SLC-10 Bases Bardney Breighton Caistor Carnaby Catfoss Coleby Grange Driffield Feltwell Folkingham Full Sutton Harrington Hemswell Ludford Magna Melton Mowbray Mepal North Luffenham North Pickenham Polebrook Shepherds Grove Tuddenham Components Boosters Castor-1 Castor-1 Castor-4 Castor-4A CBC GEM-40 GEM-46 GEM-60 First stages Common Booster Core Upper Stages Delta Delta-A Delta-D Delta-E Delta-F Delta-K Delta-P DCSS Other Able Ablestar Agena Altair Burner FW-4D IABS PAM-D Star UM-129 Engines AJ-10 B-8048 B-8081 B-8096 LE-5 LR-79 MB-3 R-4D RL10 RS-27 RS-68 TR-201 Manufacturers Rocket Douglas McDonnell Douglas Boeing United Launch Alliance Engines Aerojet Alliant Rocketdyne Thiokol TRW Launches 1957–1959 1960–1969 1970–1979 1980–1989 1990–1999 2000–2009 2010–2019