21st Century motorgliders
For some years we've been working on a twin jet self launch package which can be retrofitted to many existing single seat gliders.
Current status is that we have an engine which produces close to 28 Kgf (61.6lbf) thrust at sea level ISA standard conditions. This engine is based on the AMT Netherlands Olympus Mark 2 with some modifications to internal gas flow paths and has been converted to kerosene start (no more propane start gas) and spark ignition for start reliability.
We have also produced a pilot control unit and a display unit for mounting in the cockpit and an add on to the AMT digital engine controller to control the extension and retraction of the engine and manage the battery power systems for the two engines in order to maximise redundancy and reliability. We are very close to taking delivery of two modified engines, ready to install.
For an overview of the project and some projected performance numbers see the file 21stCenturyMotorgliders.pdf
That article is reproduced here by permission of the Soaring Society of America and was first published in "Soaring" magazine in March 2008.
As progress is made on the project it will be reported here on the Borgelt Instruments website.