Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
Aeroelastic Model Helicopter Rotor Testing in the Langley TDT
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
A Historical Overview of Aeroelasticity Branch and Transonic Dynamics Tunnel Contributions to Rotorcraft Technology and Development
Author: Publisher: DIANE Publishing
ISBN: 1428995803
Category :
Languages : en
Pages : 115
Book Description
Wind Tunnel Evaluation of a Model Helicopter Main-Rotor Blade With Slotted Airfoils at the Tip
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 134
Book Description
Data for rotors using unconventional airfoils are of interest to permit an evaluation of this technology's capability to meet the U.S. Army's need for increased helicopter mission effectiveness and improved safety and survivability. Thus, an experimental investigation was conducted in the Langley Transonic Dynamics Tunnel (TDT) to evaluate the effect of using slotted airfoils in the rotor blade tip region (85 to 100 percent radius) on rotor aerodynamic performance and loads. Four rotor configurations were tested in forward flight at advance ratios from 0.15 to 0.45 and in hover in-ground effect. The hover tip Mach number was 0.627, which is representative of a design point of 4000-ft geometric altitude and a temperature of 95 degrees F. The baseline rotor configuration had a conventional single element airfoil in the tip region. A second rotor configuration had a forward-slotted airfoil with a -6 degrees slat, a third configuration had a forward-slotted airfoil with a -10 degrees slat, and a fourth configuration had an aft-slotted airfoil with a 3 degrees flap (trailing edge down). The results of this investigation indicate that the -6 degrees slat configuration offers some performance and loads benefits over the other three configurations.
Scientific and Technical Information Output of the Langley Research Center for Calendar Year 1984
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 416
Book Description
Performance Data from a Wind-tunnel Test of Two Main-rotor Blade Designs for a Utility-class Helicopter
Author: Jeffrey D. SingletonPublisher: DIANE Publishing
ISBN: 1428915508
Category : Rotors (Helicopters)
Languages : en
Pages : 86
Book Description
Scientific and Technical Aerospace Reports
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 568
Book Description
A Historical Overview of Aeroelasticity Branch and Transonic Dynamics Tunnel Contributions to Rotorcraft Technology and Development
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 118
Book Description
Scientific and Technical Information Output of the Langley Research Center for Calendar Year 1985
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 284
Book Description
NASA's Contributions to Aeronautics: Aerodynamics, structures, propulsion, controls
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 980
Book Description
Two-volume collection of case studies on aspects of NACA-NASA research by noted engineers, airmen, historians, museum curators, journalists, and independent scholars. Explores various aspects of how NACA-NASA research took aeronautics from the subsonic to the hypersonic era.-publisher description.
Rotating Shake Test and Modal Analysis of a Model Helicopter Rotor Blade
Author: W. Keats WilkiePublisher:
ISBN:
Category : Modal analysis
Languages : en
Pages : 24
Book Description
