Subject: NAS2-99090 July monthly report

Date: August 2, 2000

The following items were completed or worked on during July.

• Designed, fabricated, and installed new rotor prerotator. Includes a modified Suzuki rear end and 2 constant velocity u-joints, a 5 groove belt drive/clutch with associated pulleys, idler and hydraulic cylinder, new rotor drive shaft and associated support structures.
• Performed torque proof tests on rotor drive at 3000 ft-lbs.
• Installed engine in aircraft.
• Determined new location for and installed the accessories that were originally mounted to the engine compartment floor which is now occupied by radiators and coolers.
• Installed all plumbing - electrical, oil and water.
• Painted rudders, wing, booms and horizontal stabilator.
• Finished installing co-pilot control stick and adjusted control cables.
• Improve prop design programs to make it easier to design for a wide variety of engines and aircraft.
• Started work on a new prop spinner.
• Presented forum at Oshkosh on CarterCopter.

The following items need to be completed before flight testing can resume, hopefully in August.

• Finish checking out electrical systems
• Finish a few mechanical details
• Calibrate all sensors needed to test rotor and prop in aircraft
• Test rotor to maximum RPM allowable at 2000 ft-lbs. on drive shaft. Hopefully, the rotor RPM will exceed 450. Check that rotor and rotor head is stable and smooth at all RPMs between 75 and 450 at varying degrees of collective. Design maximum jump takeoff RPM is set at 425.
• Assuming rotor tests are completed without additional modification, calibrate all data inputs and check that data downloading from aircraft to ground is in working order.
• Retest prop with new spinner.
• Perform taxi test.

Sampling of rotor lift data