INTA-255
The INTA-255 was a Spanish sounding rocket developed by the Instituto Nacional de Tecnica Aerospacial.
It was based on existing british solid rocket motors: four Chick rockets as a booster stage and a single Goose-2 as stage 1. All the engines were fired at launch, with the Chicks burning for 0.2 seconds and the Goose-2 continuing for 17 seconds.
The apogee of INTA-255 was 150 km for a 5 kg payload, the takeoff thrust 42.00 kN, the gross mass 340 kg, the diameter 0.26 m and the length to 6.03 m.
Launches
The INTA-255 was launched by INTA three times from El Arenosillo, between 1969 and 1970.| Date | Mission type | Apogee |
| July 19, 1969 | Booster test | 1 km |
| December 20, 1969 | Test mission | 73 km |
| December 22, 1969 | Test mission | 132 km |