NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Some experiments on Yaw stability of wind turbines with various coning anglesA horizontal axis wind turbine was constructed to study the effect of coning angle on the yawing moments produced. Coning angles of 0 deg, +10 deg and -10 deg were studied in the upwind and downwind cases. Moment and rotational frequency of the blades at each yaw angle setting were taken. It was found that as the coning angle increased from -10 deg to +10 deg in either the upwind or downwind case the stability decreased. The downwind case was slightly more stable for all coning angles than was the upwind case. It is found that all the previous cases were stable for high rotation speeds, but at lower rotation speeds, they were all unstable and could not self start unless held in the wind.
Document ID
19830014469
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Bundas, D. (Massachusetts Inst. of Tech. Cambridge, MA, United States)
Dugundji, J. (Massachusetts Inst. of Tech. Cambridge, MA, United States)
Date Acquired
September 4, 2013
Publication Date
July 1, 1981
Subject Category
Energy Production And Conversion
Report/Patent Number
DOE/NASA/3303-1
MIT-ASRL-TR-197-2
NAS 1.26:168108
NASA-CR-168108
Accession Number
83N22740
Funding Number(s)
CONTRACT_GRANT: NSG-3303
CONTRACT_GRANT: DE-AI01-76ET-20320
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available