Results with Lycoming YT53-L-1 free power turbine engine installed in modified Kaman HOK-1, and Bell XH40 helicopters; operation of engine and its accessories were found satisfactory; temperatures were well within specified limits; noise levels average 10 to 12 db lower on HO K (T53) in comparison with those of standard HOK-1 (R-1340) installation.
Early experiences in flight tests with T 53 powered helicopters
ASME -- Paper
ASME Meeting ; 1957 Jet propelled
1957
11 pages
Aufsatz (Konferenz)
Englisch
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