Analysis of Unmanned, Tethered, Rotary-Wing Platforms (Vol. 1 or 2)
Final technical rept. Aug 1973-Apr 1974
KAMAN AEROSPACE CORP BLOOMFIELD CT
Pagination or Media Count:
A study was conducted 1 to determine the feasibility of an unmanned, tethered, rotary-wing vehicle as an elevated platform for target detection sensors or other payloads and 2 to determine the best approach to implementing specified design and performance requirements. A review was made of current and past developments of tethered platforms, and a large number of rotary-wing lift concepts, rotor drive and long-endurance power concepts, and stabilization and control concepts were formulated for evaluation. Mathematical models were designed and a digital computer was used to generate quantitative data on air vehicle size, weight, horsepower, etc., for alternative systems. A turboshaft-driven synchropter, utilizing fuel pumped from the ground for long endurance, was recommended as the best overall approach for an unmanned tethered platform. The synchropter, with cyclic pitch controls, will provide a stable platform for mission sensors and can be operated, without attention from the ground, by a simple automatic flight control system.
- Pilotless Aircraft