Recent content by Cozyflier

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    Diesel fiberglass tank question

    I have also used EZ Poxy from Aircraft Spruce on a number of my builds. The fuel cells used 100 LL and also Gas station diesel depending on a piston or jet power plant. The EZ Poxy is commonly used by the Long EZ and Cozy builders for the fuel tanks and fuel sumps. As mentioned, as long as...
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    Turbine power for self launch and sustained flight.

    Here is an additional video of a short clip compilation of self-launches with the camera mounted in the cockpit, the wing tip and the wing mid point. https://www.youtube.com/watch?v=xeQIRrZ7JCU
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    Turbine power for self launch and sustained flight.

    Here is an additional video of a short clip compilation of self-launches with the camera mounted in the cockpit, the wing tip and the wing mid point. https://www.youtube.com/watch?v=xeQIRrZ7JCU
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    Turbine power for self launch and sustained flight.

    Here are a couple of video links showing the Sailplane while using the turbines. First flight: https://www.youtube.com/watch?v=YepD4f9igW8 The best section is from 1:30 to 2:00 into the clip. Colorado fly by: https://www.youtube.com/watch?v=y9BjPPhgWxo Short take of a turbine fly by...
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    Second HP-24 First Flight

    Congratulations Bob, Doug, Great to hear you have completed and launched another HP24. Your continued hard work and perseverance has payed off with another successful project. Hope to see you at the EAA Oshkosh convention. Regards, Chris
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    HP-18J Self-Launch Sailplane Project

    It seems to be about right if not a little better then expected. My goal was to be able to climb to 3K and have enough fuel remaining for a couple of re-lights.
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    HP-18J Self-Launch Sailplane Project

    The testing of the twin turbines is now complete, below are a couple of notes regarding my last flight test: The weather and wind was favorable for the one remaining flight test last Friday. After assembly and one turbine test run the HP-18J was pulled out to the runway for the last remaining...
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    Turbine power for self launch and sustained flight.

    The weather and wind was favorable for the one remaining flight test last Friday. After assembly and one turbine test run the HP-18J was pulled out to the runway for the last remaining flight test - the self-launch exercise. Wind speed and direction was 5 to 10 mph almost right down the...
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    Turbine power for self launch and sustained flight.

    In general an airspeed of 75 to 80 mph seemed to be the the best range for climb. I did increase it to 105 mph for a short duration and it showed a slowing trend in the climb rate. Many more flights will provide more finite data as I get time to do further speed and climb exercises.
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    Sorry I have missed your two posts. If you still need some info, let me know and I will try to...

    Sorry I have missed your two posts. If you still need some info, let me know and I will try to address your questions. Thanks, Chris
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    Lee, My mods appear to be successful with the twin turbines. The flight test program is mostly...

    Lee, My mods appear to be successful with the twin turbines. The flight test program is mostly completed and all I have remaining is the self launch procedure. I am the builder of my bird and have made many modifications, so I am somewhat free to change and modify as I please. At this point...
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    Turbine power for self launch and sustained flight.

    The weather has improved in the Mid West and the flight testing of the HP-18J has resumed. Last weekend I took a 3,000' tow with the twin turbines at idle. Upon release I applied full power for a 2 minute duration climb for the first test. The climb provided a 1,200 gain or a 600' per minute...
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    Turbine power for self launch and sustained flight.

    The HP-18J is currently at the end of its testing phase as a true sailplane (non turbine powered) and has been a joy to fly. I am starting to get used to the plane but have a ways to go before I am one with the craft. It seems to be a bit weak on yaw control during cross wind landings and...
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    HP-18J Self-Launch Sailplane Project

    None to really speak of. Being an experimental may have helped, but the key is that it is an aircraft and not an airplane. The turbines are not being used as the primary source of propulsion.
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    HP-18J Self-Launch Sailplane Project

    Most of the changes were Udo Rumpf's with his airfoil modification.
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