සාරාංශය
The Bell HSL was an American 1950s anti-submarine warfare (ASW) helicopter built by Bell Helicopter for the US Navy. The prototype first flew in 1953, but the type became obsolete during development and was found unsatisfactory upon entering service in 1957, resulting in the cancellation of the production contract; many of the 50 production aircraft were delivered directly into storage. The last HSL was retired in 1960. It was the only tandem rotor type designed by Bell.
පිරිවිතර
සංඛ්යා ප්රසිද්ධ මූලාශ්රවලින් එකතු කළ ඒවා බැවින් ආසන්න අගයන් විය හැක; ප්රභේදය සහ සැකසුම අනුව වෙනස් විය හැක.
ඡායාරූප
ඡායාරූපය 1: Department of the U.S. Navy / Wikimedia Commons · Public domain
සමහර පෙළ සහ රූප Wikipedia / Wikimedia Commons වෙතින් CC BY-SA බලපත්ර යටතේ ලබාගෙන ඇත. මූලාශ්රය
