Engineering:P80 (rocket stage)
 P80 being transferred at Guiana Space Centre | |
| Manufacturer | Avio |
|---|---|
| Country of origin | Italy |
| Used on | Vega |
| Associated stages | |
| Derivatives | P120 |
| Launch history | |
| Status | Active |
| Total launches | 21 |
| Successes (stage only) | 21 |
| First flight | 13 February 2012 |
| Last flight | 9 October 2023 |
| 1 stage – P80FW [1] | |
| Length | 10.6 metres (35 ft) |
| Diameter | 3 metres (9.8 ft) |
| Empty mass | 7,330 kilograms (16,160 lb) |
| Gross mass | 95 tonnes (93 long tons; 105 short tons) |
| Propellant mass | 88 tonnes (87 long tons; 97 short tons) |
| Thrust | 3,037 kilonewtons (683,000 lbf) |
| Specific impulse | 280 seconds |
| Burn time | 114 seconds |
| Fuel | Aluminium-HTPB 1912 |
P80 is a solid-fuel first-stage rocket motor used on the European Space Agency Vega rocket (in the P80FW version). It was the world's largest and most powerful one-piece solid-fuel rocket engine, being replaced by the larger P120C on 13th July, 2022.[2]
History
The P80's development was led by a joint team of ESA, CNES and ASI since 2005, with Avio selected as the prime contractor.[3]:15 The first test of the P80 engine was completed at Centre Spatial Guyanais in November 2006 followed by qualification tests in December 2007.[4] The first launch was completed on 13 February 2012,[5][6] with the first commercial launch following on 7 May 2012.[7] Total development cost of the engine reached €76 million.[3]:15
Overview
P80FW is a single monolithic solid rocket motor propelled by hydroxyl-terminated polybutadiene which burns for 114 seconds and is jettisoned at an altitude of 53 km after achieving a relative speed of 1.7 km/s.[3]:13[2]
The engine shares specifications with Ariane 5 solid rocket boosters - it has the same 3 meter diameter and similar height to the largest segments of the booster. This allows using the same facilities and equipment at the Guiana Propellant Plant for loading the propellant and transporting the engine to the launch site. The nozzle of the P80 is also a direct evolution of the one used in Ariane 5 boosters.[3]:5
The manufacture process is divided among several European companies. Italian Avio manufactures the main motor case loaded with fuel, performs integration of the components, and final testing. French-Italian Europropulsion manufactures the P80 motor while Regulus performs propellant loading. Aerospace Propulsion Products B.V. from Netherlands builds the igniter.[8] Belgian SABCA produces components for thrust vectoring and the staging skirt. French Herakles manufactures the engine nozzle.[3]:5
Related development
P120C
The P120C a wider version of the engine with increased propellant mass to 143.6 tons, is in development for use as Ariane 6 boosters and Vega C first stage.[9] In 2022, an extended P120C+ version was proposed.[10]
See also
- P120 (rocket stage)
- Zefiro (rocket stage)
- Solid rocket
- Vega (rocket)
References
- ↑ "VEGA: 1° Stage - P80 Motor". Avio. http://www.avio.com/en/vega/vega/vega-1-stadio-p80-motor/.
- ↑ 2.0 2.1 "Vega Launcher - Launcher Composition". European Launch Vehicle S.p.A. P.IVA. http://www.elv.it/en/launcher-vega/composizione-lanciatore/primo-stadio/.
- ↑ 3.0 3.1 3.2 3.3 3.4 "Press Kit - Vega qualification flight VV01". ESA. http://download.esa.int/docs/VEGA/Vega_PressKit_06-02-2012_EN.pdf.
- ↑ "Vega Satellite Launcher". Avio. http://www.avio.com/files/catalog/pdf/motore_p80_75.pdf.
- ↑ "ESA's new Vega launcher scores success on maiden flight". ESA. 13 February 2012. http://www.esa.int/Our_Activities/Launchers/Launch_vehicles/Vega3/ESA_s_new_Vega_launcher_scores_success_on_maiden_flight.
- ↑ "Vega maiden launch goes to plan". Flightglobal. 13 February 2012. https://www.flightglobal.com/news/articles/vega-maiden-launch-goes-to-plan-368170/.
- ↑ "Vega's second success 'confirms functionality'". Flightglobal. 9 May 2013. https://www.flightglobal.com/news/articles/vegas-second-success-confirms-functionality-385689/.
- ↑ APP Aerospace Propulsion Products B.V. (2013-05-07). "APP: Space - Specialist in the development and production of igniters for rocket engines". http://www.appbv.nl/index.asp?grp_id=3.
- ↑ "P120 C solid propellant motor". http://www.avio.com/en/ariane/ariane-6/p120c-motor/.
- ↑ ESA-developed P120C solid rocket motor enters production April 2022
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