After a successful test campaign of Lotus Dev 1 (LD1), BURPG is introducing the latest engine to the Lotus series, Lotus Dev 2 (LD2). LD2 will power BURPG’s Starscraper suborbital launch vehicle to 100km in the summer of 2017.
The pressure-fed engine produces 2,500 lbs of thrust with 233 sec Isp SL. LD2 features an increased chamber pressure and L* for boosted engine performance. A single LD2 will replace the clustered LD1 configuration for Starscraper’s spaceshot.
To support development of LD2, BURPG will employ Iron Lotus - a steel heat-sink engine with the internal chamber geometry of LD2. Iron Lotus will allow the team to complete ignition testing prior to putting LD2 on the stand; getting BURPG to the test stand faster and with less hardware risk. Ignition data collected will be used to push LD2’s aggressive test campaign.
In order to obtain reliable and repeatable ignition, BURPG has turned to Triton Space Technologies’ TS-160Y pyro actuated poppet valves for the engine's main valves. The TS-160Y provides up to 3,000 psi working pressure and is coupled with high flow capacity. It features 1" male AN connections, a liquid CV of 13, and an open response time of < 75 ms - faster than typical pneumatically actuated ball valves. BURPG is lucky to be working closely with Triton Space Technologies in support of the Starscraper program. Triton Space Technologies' technical and financial support will go a long way as BURPG pushes the envelope of amateur aerospace. Read more about Triton Space Technologies (www.triton-space.com) and the TS-160Y valves here: www.triton-space.com/ts-160y.
In parallel with LD2 development, vehicle design continues. Starscraper subsystems have undergone both internal and external CDR's for the new intertank, fuel tank, feed system, and TVC system. A full vehicle CDR is scheduled for the month of December as we aim to complete flight paperwork before the end of the year.
BURPG is excited for the months ahead as Starscraper build ramps up and engine testing progresses. If you would like to support our team, please email us at firstname.lastname@example.org.