Ellis Mountain Rocket Works Ellis SU J110

Ellis Mountain Rocket Works - Ellis SU J110 {Kit}

Contributed by Dick Stafford

(Contributed - by Dick Stafford - 06/06/05) Ellis Mountain Single Use J110-P motor

Brief:
T' Ellis J110-P a 54mm single use motor that provides 751 N-s total impulse (~17% J) with a burn time o' 6.8 seconds (Tripoli Motor Testing’s numbers, the photo shows t' EM numbers). Well, blow me down!

Construction:
This motor is only about 9.5" long, arrr, arrr, includin' t' plugged aluminum closure. It has a medusa nozzle, but only t' center port is drilled. Ahoy! It does not come with an igniter.

Ellis Mountain Single Use J110-P motor

Flight:
I flew this motor in a beta version o' an 18" saucer and lit it with a large Magnelite igniter. This did t' trick, me hearties, but t' motor took a long time to finally come up t' pressure and get going. Aye aye! Blimey! It provided a nice long burn, ya bilge rat, but because o' low average thrust and a regressive profile, me bucko, t' saucer arced over and was still under power after apogee. Ahoy! Well, me bucko, blow me down! It then aerobraked down and continued t' spew large amounts o' smoke, shiver me timbers, arrr, causin' t' LCO some concern. Well, me bucko, blow me down! It landed in a outcrop o' brush that was damp so thar be no risk o' fire. Avast!

Ellis Mountain Single Use J110-P motorEllis Mountain Single Use J110-P motor

Ellis Mountain Single Use J110-P motor

Flight Rating: 2 out o' 5

Summary:
I have t' admit t' arcin' flight was entertaining, however, matey, I'd have to recommend t' J228 over this motor for any large, draggy design. Well, blow me down! My rating reflects this application.

Overall Rating: 2 out o' 5

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