Accession Number : AD0021495


Title :   THE LAUNCHING AND LANDING OF CARRIER AIRCRAFT. PART 2. LIMITATIONS OF CABLE-DRIVE CATAPULTS


Descriptive Note : Final rept.


Corporate Author : KANSAS UNIV LAWRENCE


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/021495.pdf


Report Date : Dec 1952


Pagination or Media Count : 70


Abstract : A study was made of the performance limitations of hydraulic catapults which transfer the force of the catapult engine to the aircraft by a cable. The ultimate strength of the cable was shown to limit the acceleration to 802 fps for a cable length equal to the total run length. However, the speed appeared to be limited practically below this by a rapid total-weight increase as the accelerated-run length increased to give a higher terminal velocity. A multiply reeved system decreased the maximum attainable velocity as the multiplication of reeving increased. An increase in cable limitations with cable length indicated improved performance by using shuttle-or multiple-braking systems and eliminating multiple reevings. A continuous-cable-drive, shuttle- clutch catapult offered possibilities for medium-capacity installations. Catapult choice was shown to be a compromise among considerations of low over- all weight, low topside weight, high efficiency, protection from damage, reliability and durability, and lack of interference with armor, flight-deck structures, and aircraft-carrier equipment.


Descriptors :   *CARRIER LANDINGS , *CATAPULTS , *MECHANICAL CABLES , VELOCITY , ARMOR , HIGH RATE , STRUCTURES , LIGHTWEIGHT , AIRCRAFT CARRIERS , FLIGHT DECKS , HYDRAULICS , ENGINES , EFFICIENCY , RELIABILITY , LIMITATIONS , LENGTH , STRENGTH(GENERAL)


Subject Categories : Aircraft
      Terminal Flight Facilities
      Marine Engineering


Distribution Statement : APPROVED FOR PUBLIC RELEASE