Unreasonable Rocket – OTRAG Lite

Paul Breed of Unreasonable Rocket has picked up his project for a mini OTRAG style launcher, the goal is to have flown a single tube by April 2019, just in time for the Space Access Conference.

For those not familiar, check out my post from a few years ago on the project.

The project will make use of 4″ dia 6061 tube, housing 90% hydrogen peroxide and a yet non-disclosed hypergolic fuel.

Paul has already been making progress as outlayed in the blog posts below,

Well worth a read.

Unreasonable Rocket Update

OTRAG Staging (Credit: Unreasonable rocket)

Paul Breed of Unreasonable rocket recently posted an update and his slides from the Space Access Conference earlier this year. Paul is working towards building an OTRAG style nanosatellite launcher.

Updated 21/6/2016

Continue reading “Unreasonable Rocket Update”

Unreasonable Rocket Engine Test

Paul Breed of Unreasonable Rocket has conducted a recent test of his new 3D printed peroxide/gasoline rocket engine.

The engine is designed to test for a OTRAG style nano-sat launcher, discussed here, once performance has been achieved, Paul aims to make it light enough until it fails and then progress onto a flight-weight engine and OTRAG tube.

Make sure to check Unreasonable Rockets blog for many more updates.

Unreasonable Rocket Update

Paul Breed has a new update on his quest to build a nano-satellite launch vehicle.

Paul first started looking into this back in 2012, even going as far as entering the Space Frontier Foundation, NewSpace business plan competition. Recently he has resurrected his plan and idea with a newfound approach. Paul is no stranger to rockets and space, having entered in Level 1 of the Northrop Grumman Lunar Lander Challenge with his VTVL rocket “Blue Ball” and level 2 with “Silver Ball”.

Unreasonable Rockets current approach for a nano-satellite launcher uses the OTRAG example, where common propulsion modules (tanks and engines) are strapped together to form a larger rocket and staged as necessary along its flight path. This common propulsion module approach was first tried in the 1970s, although never making an orbital flight, and is also the approach being used by Interorbital Systems for their N-5 rocket.

Work has been carried out on carbon fibre tanks and it is now that a mass ratio (wet mass to dry mass) of 15 has been achieved with the current set up. Work now continues on an extended version of the tank for testing and motor design, that will be 3D printed. An artist rendering of the proposed rocket is shown below.

Unreasonable Rocket Nano-Satellite launcher (Credit: Unreasonable Rocket, Ed Lebouthillier)

This promises to be a very exciting project and one that will deliver.
You can find more info on the project to date by clicking here.

Paul on twitter: @unrocket

Unreasonable Rocket 2012 Business Plan Competition entry:
Executive Summary
Business Plan
Slide Link