The objective of the refan program is to demonstrate the technical feasibility of substantially reducing the noise levels of existing JT8D powered aircraft. The program consists of the design, manufacturing and testing of the refan engines and modified nacelles and airplanes. Experimental testing was completed for the refan engine both at sea level and at altitude conditions. Ground testing for the B727 side- and center-engine installations and flight testing of the DC-9 with refan engines and acoustic nacelles were performed. Preliminary results presented show that substantial noise reductions were achieved.
NASA refan program status
Air Transportation Meeting ; 1975 ; Hartford, CT, United States
1975-01-01
Conference paper
No indication
English
NTIS | 1975
|NTIS | 1973
The 727/JT8D refan side nacelle airloads
NTRS | 1974
|The 727/Jt8d Refan Side Nacelle Airloads
NTIS | 1974
|