My prop fell off - what did I do about it, and why did it happen?
My design methodology, involving Belleville washers, to make the prop mounting system more robust.
Everything you need to know about props:
How the Berkut aircraft design has evolved into the optionally controlled Mobius aircraft. Mobius can be totally autonomous or manually controlled. There will be several movies showing the Mobius autonomously flying, landing and taking off.
There seems to be a lot of hanger talk about the advantages or disadvantages of 3 bladed propellers in use. I will do my best to answer the question for you as to when and under what conditions the 3 bladed may be best.
This presentation describes the conversion of a Cozy NACA scoop to P-51 style to feed a radiator. Shown are the construction details as well as the before and after pressure and temperature measurements. Pressure measuring techniques are described.
Craig started flying sailplanes at age 13 and soloed at age 14, going on to getting his private pilots license and while also flying hang gliders from age 14. Craig and his brother Chuck were amongst the first to put an engine on a hang glider that further evolved into the ultra light aviation industry. It was then that Craig made his first propellers back in 1974. Since then thousands of his propellers were made for ultra lights and since 1989 propellers for the homebuilt industry. Craig's propellers have set world altitude records in excess of 82,000 feet and also dominate the bi-plane race class at the Reno Air Races. Craig now produces both 2 and 3 bladed propellers for all the popular home built aircraft.
Jeremy joined the RAF (Royal Air Force) in England in January 1968 and was trained for 2 years at the No1 School of Technical Training, RAF Halton, as an aircraft Electrical and Instrument Technician. From 1970 he worked in that capacity on the UK's famous 'V-bomber' aircraft, the Victor and the Vulcan, with occasional work on the Hawker Hunter and the Canberra. His RAF term ended in November 1974. Jeremy emigrated to Canada right afterward and was employed by Pacific Western Airlines in Vancouver, maintaining Boeing 707, 727 and 737 aircraft. He now lives in Santa Cruz, California.
Dave has built around 20 complete EZ type aircraft, more than anyone else. He has built 12 longEzes, 7 Berkuts and 2 Mobius aircraft His first design, Magna, was started in 1976. Then in 1980 he became a professional builder. In 1986 he designed the Berkut, which first flew in 1991.
Keith is a two time Cozy builder going back to 1984. He has worked in flight test at Lockheed, Hughes Helicopters and McDonnell Douglas as a Mechanical Engineer with 42 years of experience. He is currently Chief Engineer at an FAA 145 Repair Station.
Marc works on cutting edge (and some not-so-cutting edge) aeronautical engineering projects under Burt Rutan, and contributes to the continuing effort to bring space travel to the masses. He had responsibility for the Environmental and Pneumatic systems for the Space Ship 2 project.
Marc has built two experimental aircraft and is a licensed A&P mechanic.