Encyclopedia Astronautica
Hydra-Iris


American sounding rocket. Two stage underwater-launched vehicle consisting of 3 x Sparrow motors in the booster stage and an Iris upper stage.

Joint US Navy-Lawrence Livermore National Laboratory project.

Failures: 2. First Fail Date: 1965-01-07. Last Fail Date: 1966-10-30.

Gross mass: 700 kg (1,540 lb).
Height: 6.50 m (21.30 ft).
Diameter: 0.61 m (2.00 ft).
Thrust: 105.00 kN (23,604 lbf).
Apogee: 300 km (180 mi).
First Launch: 1964.08.10.
Last Launch: 1968.11.03.
Number: 8 .

More... - Chronology...


Associated Countries
See also
  • Iris Sounding rocket developed by the US Navy, then handed over to NASA. Flown only four times, but then used in unique Hydra-Iris test series. More...

Associated Manufacturers and Agencies
  • Livermore American agency overseeing development of rockets and spacecraft. Livermore, USA. More...
  • NAWC American manufacturer of rocket engines and rockets. Naval Air Warfare Center, Weapons Division (formerly called Naval Weapons Center), USA. More...

Associated Launch Sites
  • Atlantic Ocean Sounding rocket launches made from naval vessels in the Atlantic accounted for 521 launches from 1947 to 1995, reaching up to 750 kilometers altitude. More...
  • Pacific Ocean Sounding rocket launches made from naval vessels in the Pacific accounted for 280 launches from 1949 to 2006, reaching up to 1000 kilometers altitude. More...

Associated Stages

Hydra-Iris Chronology


1964 August 10 - . Launch Site: Pacific Ocean. Launch Pad: 34.0 N x 123.0 W. Launch Platform: T-AGM-8. LV Family: Iris. Launch Vehicle: Hydra-Iris. LV Configuration: Hydra-Iris GSP-1.
  • LRL GSP-1 Magnetospheric mission - . Nation: USA. Agency: USN NMC. Apogee: 200 km (120 mi).

1965 January 7 - . Launch Site: Atlantic Ocean. Launch Pad: 56.5 S x 27.4 W. Launch Platform: T-AGM-8. LV Family: Iris. Launch Vehicle: Hydra-Iris. LV Configuration: Hydra-Iris SAP-1. FAILURE: Failure.
  • LRL SAP-1 Ionosphere/Magnesium release mission - . Nation: USA. Agency: USN NMC. Apogee: 2.00 km (1.20 mi).

1965 January 26 - . 09:40 GMT - . Launch Site: Atlantic Ocean. Launch Pad: 35.1 S x 35.5 W. Launch Platform: T-AGM-8. LV Family: Iris. Launch Vehicle: Hydra-Iris. LV Configuration: Hydra-Iris SAP-2.
  • LRL SAP-2 (SAA) Ionosphere / magnetosphere mission - . Nation: USA. Agency: USN NMC. Apogee: 289 km (179 mi).

1965 October 28 - . 18:01 GMT - . Launch Site: Pacific Ocean. Launch Pad: 30.0 N x 120.0 W. Launch Platform: T-AGM-8. LV Family: Iris. Launch Vehicle: Hydra-Iris. LV Configuration: Hydra-Iris BOX-2.
  • LRL BOX-2 X-ray astronomy mission - . Nation: USA. Agency: USN NMC. Apogee: 194 km (120 mi).

1966 May 31 - . 17:16 GMT - . Launch Site: Pacific Ocean. Launch Pad: 10.0 N x 115.9 W. Launch Platform: T-AGM-8. LV Family: Iris. Launch Vehicle: Hydra-Iris. LV Configuration: Hydra-Iris BOX-4.
  • LRL BOX-4 X-ray astronomy mission - . Nation: USA. Agency: USN NMC. Apogee: 188 km (116 mi).

1966 October 30 - . 17:45 GMT - . Launch Site: Pacific Ocean. Launch Pad: 31.0 N x 133.0 W. Launch Platform: T-AGM-8. LV Family: Iris. Launch Vehicle: Hydra-Iris. LV Configuration: Hydra-Iris BOX-5. FAILURE: Failure.
  • LRL BOX-5 X-ray astronomy mission - . Nation: USA. Agency: USN NMC. Apogee: 12 km (7 mi).

1968 March 20 - . 19:55 GMT - . Launch Site: Pacific Ocean. Launch Pad: 32.3 N x 128.0 W. Launch Platform: AVM1. LV Family: Iris. Launch Vehicle: Hydra-Iris. LV Configuration: Hydra-Iris BAR-1.
  • LRL BAR-1 test - . Nation: USA. Agency: USN NMC. Apogee: 195 km (121 mi).

1968 November 3 - . 18:00 GMT - . Launch Site: Pacific Ocean. Launch Pad: 27.5 N x 125.0 W. Launch Platform: T-AGM-8. LV Family: Iris. Launch Vehicle: Hydra-Iris. LV Configuration: Hydra-Iris BOX-15.
  • LRL BOX-15 X-ray astronomy mission - . Nation: USA. Agency: USN NMC. Apogee: 227 km (141 mi).

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