Browse TRAIL Inventories

Tire friction coefficients and their relation to ground-run distance in landing

Effect of Helicopter Performance of Modifications in Profile-Drag Characteristics of Rotor-Blade Airfoil Sections

Charts for estimation of the characteristics of a helicopter rotor in forward flight I: profile drag-lift ratio for untwisted rectangular blades

Flight Tests of the Sikorsky HNS-1 (Army YR-4B) Helicopter 2: Hovering and Vertical-Flight Performance With the Original and an Alternate Set of Main-Rotor Blades, Including a Comparison With Hovering Performance Theory

Flight Tests of the Sikorsky HNS-1 (Army YR-4B) Helicopter 1: Experimental Data on Level-Flight Performance With Original Rotor Blades

Stalling of Helicopter Blades

Stalling of Helicopter Blades

Effect of Rotor-Tip Speed on Helicopter Hovering Performance and Maximum Forward Speed

Effect of blade stalling on the efficiency of a helicopter rotor as measured in flight

Analysis of Flight-Performance Measurements on a Twisted, Plywood-Covered Helicopter Rotor in Various Flight Conditions

Helicopter Stability

Notes on the Application of Airfoil Studies to Helicopter Rotor Design

Longitudinal flying qualities of several single-rotor helicopters in forward flight

The application of airfoil studies to helicopter rotor design


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