Robuta

https://www.fraunhofer.de/en/press/research-news/2020/february/hm-preview2020-iws-additively-manufactured-rocket-engine-features-an-aerospike-nozzle-for-microlaunchers.html Additively manufactured rocket engine features an aerospike nozzle for microlaunchers Microlaunchers are an alternative to conventional launch vehicles. Able to carry payloads of up to 350 kilograms, these midsized transport systems are designed... rocket engineaerospike nozzlemanufacturedfeatures