Merlin 1A Merlin (rocket engine family)

-


spacex merlin 1a


the initial version, merlin 1a, used inexpensive, expendable, ablatively cooled carbon-fiber-reinforced polymer composite nozzle, , produced 340 kn (77,000 lbf) of thrust. merlin 1a flew twice: first on march 24, 2006, when caught fire , failed due fuel leak shortly after launch, , second time on march 21, 2007, when performed successfully. both times merlin 1a mounted on falcon 1 first stage.


the spacex turbopump entirely new, clean sheet design contracted barber-nichols, inc. in 2002 performed design, engineering analysis, , construction; company had worked on turbopumps rs-88 (bantam) , nasa fastrac engine programs. merlin 1a turbopump used unique friction-welded main shaft, inconel 718 ends , integral aluminum rp-1 impeller in middle. turbopump housing constructed using investment castings, inconel @ turbine end, aluminum in center, , 300-series stainless steel @ lox end. turbine partial-admission impulse design , turned @ 20,000 rpm, total weight of 150 lb.








Comments

Post a Comment

Popular posts from this blog

Types Raffinate

-
1 types 1.1 raffinate-1 or c4r1 1.2 raffinate-2 or c4r2 1.3 raffinate-3 or c4r3 1.4 raffinate-4 or c4r4 types raffinate-1 or c4r1 in naphtha cracking process, c4r1 refers c4 residual obtained after separation of 1,3-butadiene c4 raffinate stream , which, consists of isobutylene 40~50 wt% , cis- or trans-2-butene 30~35 wt%. c4r1 side product in 1,3-butadiene plant , feed tert-butyl alcohol plant. raffinate-2 or c4r2 in naphtha cracking process, c4r2 refers c4 residual obtained after separation of 1,3-butadiene , isobutylene c4 raffinate stream , consists of cis- or trans-2-butene 50~60 wt%, 1-butene 10~15 wt%, , n-butane ~20 wt%. c4r2 side product in tert-butyl alcohol plant if c4r1 used feed. raffinate-3 or c4r3 in naphtha cracking process, c4r3 refers c4 residual obtained after separation of 1,3-butadiene, isobutylene, , 1-butene c4 raffinate stream consists of cis- or trans-2-butene, n-butane, , unseparated 1-butene. c4r3 being process through selective hydrogenation unit (shu) , cdh...
Read more

Biography Michał Vituška

-
meanwhile, special units (ss-jagdverbände) of local collaborationists trained germans infiltrate soviet rear. trained in dahlwitz near berlin ss-standartenführer otto skorzeny. paratroopers came reichskommissariat ostland; , split commandos based on country of origin. part of nazi effort combat growing soviet partisan movement in belarus during war, thirty belarusians espionage , sabotage outfit known Čorny kot (black cat) led michał vituška age 37, airdropped luftwaffe in late 1944 behind lines of red army. @ time, german forces had been expelled present-day belarus during operation bagration. black cats experienced initial successes due disorganization in rear of red army. other german-trained belarusian nationalist units slipped through białowieża forest in 1945. however, nkvd secret police informants infiltrated these units. result, ambushed , killed in short order. the anti-soviet partisans experienced initial success due disorganization in rear of red army. vituška became coord...
Read more

Caf.C3.A9 Types of restaurant

-
byways cafe in portland, oregon, usa cafés informal restaurants offering range of hot meals , made-to-order sandwiches. coffee shops, while similar cafés, not restaurants due fact serve , derive majority of revenue hot drinks. many cafés open breakfast , serve full hot breakfasts. in areas, cafés offer outdoor seating. word comes french café, designates coffee shop and/or bar in france.
Read more