Exploring genetic resistance to infectious salmon anaemia virus in Atlantic salmon by genome-wide association and RNA sequencing

Funding The authors gratefully acknowledge funding from BBSRC (BB/R008612/1, BB/R008973/1), in addition to BBSRC Institute Strategic Programme Grants to the Roslin Institute (BB/P013759/1 and BB/P013740/1).Peer reviewedPublisher PD

Plume Characterisation Testing of European Thrusters, Test Report

An experimental study has been performed to get a first insight into thruster plume shield functioning and efficiency. The shield was mounted on an Astrium 10N bipropellant thruster and was designed to protect the backflow region from contaminants. A nozzle collar made of plexiglass was installed behind the shield and thus served as a witness plate. Its light transmission after firing with and without plume shield was used to assess the shielding effect. Moreover the mass of contaminants collected on collar and shield was determined. The experiments were carried out in the Contamination Chamber Göttingen (CCG). The pure gaseous backflow has been investigated by means of simulated N2-plumes emanating from a smaller nozzle with the shield scaled down. These experiments were carried out in the high vacuum plume test facility STG, where space-like vacuum conditions are realised

Plume Characterisation Testing of European Thrusters, Executive Summary

An extensive study with 6 various subjects (work packages) has been performed to demonstrate the full plume test capacity available at DLR-Göttingen. This meant especially the use of the high vacuum facility STG with its helium-driven cryopump. In addition it could be shown how this facility and the Contamination Chamber CCG, where moderate vacuum can be achieved, complement one another. The study comprised 4 work packages with experimental work including investigations of the backflow and demonstration of the facilitys capacity to maintain space-like vacuum (<10-5 mbar) even when a 10N thruster is fired. The 2 other work packages dealt with possible future applications of STG: investigation of scaled thruster plumes and feasibility of electric thruster plume testing. On the whole 9 reports have been written to document the contract work