After Vega E there will be Vega Light, which is currently in the research and development stage. CEO Giulio Ranzo said that the aim is to have a "mini-launcher for satellites weighing 300-350 kilograms. It could be a possible development to meet market demand."http://www.ansa.it/english/news/science_tecnology/2017/06/21/future-vega-launcher-models-showcased_ef2693b8-6752-4b91-bd03-c56461ccc07c.html
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AFAIK Vega (C) batch orders and usage.There are 11 Vega and 4 Vega C in the pipe line.Nine launches have been booked into the orderbook. So five Vega and one Vega C are still available for the 2019-2021 time frame.
Vega at a glance– 2012: first launch from CSG.– 11 launches, all successful, including eight for Earth observation satellites.– 26 satellites launched (13 for Earth observation, 11 for technology applications, and two for scientific missions).– 11.3 metric tons orbited.– Six launches in the order book (all for Earth observation)
ELV will develop and extensively test a new European cryogenic upper stage engine development model for Vega evolutions beyond 2025, based on low-cost liquid oxygen–methane propulsion.The engine replaces the current Zefiro-9 solid-propellant motor and the AVUM upper stage engine for Vega-E, matching Vega-C performance at significantly reduced costs and improved flexibility.In addition, complementing the Small Spacecraft Mission Services (SSMS) programme already under development, ELV will investigate how existing motors such as the P120, P80, Z40, Z23, Z9, could be used to create a family of Vega-E configurations able to place payloads of 200–2500 kg into orbit.--The contract for Space Rider activities worth €36.7 million was signed by ESA Director of Space Transportation Daniel Neuenschwander, Thales Alenia Space Vice President Domain Exploration and Science Walter Cugno, and ELV Managing Director Andrea Preve at ESA headquarters in Paris. The Vega and Space Rider development programmes provide the framework to consolidate a Vega space system able to capture the broadest market needs with Vega-C and its spin-offs products: SSMS, Space Rider, and the VEnUS Vega electric upper stage, covering access to low Earth orbit (LEO) for payloads up to 2300 kg, orbital transfer from LEO, and return from LEO, for a multitude of space applications in a competitive manner.
I wonder if ELV will test a version of Myra or if they will test FLPP NEO ETID-ID-M. Most likely this has been worked upon for several years already. (I'm speculating)ESA/ELV are going to study multiple Vega-E versions to make a Vega-E launcher family that can orbit payloads form 200-2500kg. Vega-E is going to be P120C + Z40C + VUS, GLOW ~200mT payload ~2.5mT to 700km polar (Slightly more than Vega-C).I think Vega-L could have two versions, the forst derived from Vega-C and the second derived from Vega-E.Vega-L (from -C): P40 + Z9A + AVUM+ | Vega-L (from -E): P40 + VUS, both GLOW ~55mT, payload <0,5mTedit: Vega-L would look like Vega-E (/C) without P120C and with the fairing of Vega, but straight at the bottom.I think there could be one version in between: ?(P40-P80) + Z40C + VUS. GLOW 100-150mT, payload ~1,5mT.All launched from ELV with different launch tables, that keep the connectors at the same height. Let's add this ESA image to see the size difference between Vega and Vega-C/E[zubenelgenubi: Embedded image deleted.]The attitude control thrusters are in the wrong location according to the new Vega-E renderings. [zubenelgenubi: Embedded image deleted.]Edit: A stage the same size as Castor 120 would be a P50, A stage like SRB-A (H2/Epsilon) would be a P65.