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)

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). Begad! Blimey!

Construction:
This motor is only about 9.5" long, me hearties, shiver me timbers, includin' t' plugged aluminum closure. It has a medusa nozzle, arrr, shiver me timbers, but only t' center port is drilled. Blimey! Well, blow me down! It does not come with an igniter.

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

Flight Rating: 2 out o' 5

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

Overall Rating: 2 out o' 5

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