Tuesday, July 20, 2010

Aerotech H load tested!

From Aerotech's Facebook page comes the news that they've sucessfully tested H loads for the 29/40-120 case. Range between 162 and 166 Ns total impulse - baby Hs - and 1.05 to 1.1 second burns. Delay time 14 seconds, adjustable by drilling or buying different delay kits.

Assuming 164Ns and 1.08s burn, that's about an H152-14T.

Delivered Isp was 237.4 with 70.4 grams of Blue Thunder propellant. Core size was slightly over 1/4". The motor operates at around 650 PSI.

It's a single-grain load requiring hazmat shipping, but I buy my high-power loads at the field anyway. Price should be under $20 per load, available in a month or two.

The burn is heavily progressive, sloping from 90N to 180N thrust over the first second.

Photo on Facebook

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