The BPD Sirio motor had a fiberglass case (or a Ti case?) and was 0.49m diameter, 1.29m long. The 500 kNs impulse engine was 200 kg full, 177 kg of propellant, with a 35s burn time.
A Carbon fiber motor case version was proposed for OTS but not used.
| Int'l | Motor | Burn Date | Result | Usage | Launch |
| Desig. | Vehicle | ||||
| SNIA-BPD Glass fibre AKM (possibly called Ciron) | |||||
| 1977-029A | Geos 1 AKM | 1977 Apr 25 | S | Geos 1 ABM | Delta 130 |
| 1977-080A | Sirio 1 AKM | 1977 Aug 26: | S | Sirio 1 ABM | Delta 133 |
| 1978-071A | Geos 2 ABM | 1978 Jul 15: | S | Geos 2 ABM | Delta 143 |
| 1982-F06 | Sirio 2 AKM | 1982 Sep 9 | NT | Sirio 2 ABM | Ariane 1 L5 |