Wind Tunnel Evaluation Of A Model Helicopter Main Rotor Blade With Slotted Airfoils At The Tip
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Wind Tunnel Evaluation Of A Model Helicopter Main Rotor Blade With Slotted Airfoils At The Tip
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Author :
language : en
Publisher:
Release Date : 2001
Wind Tunnel Evaluation Of A Model Helicopter Main Rotor Blade With Slotted Airfoils At The Tip written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
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.
Wind Tunnel Evaluation Of A Model Helicopter Main Rotor Blade With Slotted Airfoils At The Tip
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-06-15
Wind Tunnel Evaluation Of A Model Helicopter Main Rotor Blade With Slotted Airfoils At The Tip written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-15 with categories.
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 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 deg slat, a third configuration had a forward-slotted airfoil with a -10 slat, and a fourth configuration had an aft-slotted airfoil with a 3 deg flap (trailing edge down). The results of this investigation indicate that the -6 deg slat configuration offers some performance and loads benefits over the other three configurations. Noonan, Kevin W. and Yeager, William T., Jr. and Singleton, Jeffrey D. and Wilbur, Matthew L. and Mirick, Paul H. Langley Research Center RTOP 581-10-11-01
Wind Tunnel Evaluation Of A Model Helicopter Main Rotor Blade With Slotted Airfoils At The Tip
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Author : United States. National Aeronautics and Space Administration
language : en
Publisher:
Release Date : 2001
Wind Tunnel Evaluation Of A Model Helicopter Main Rotor Blade With Slotted Airfoils At The Tip written by United States. National Aeronautics and Space Administration and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Aerofoils categories.
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 F. The baseline rotor configuration had a conventional single-element airfoil in the tip region.
A Historical Overview Of Aeroelasticity Branch And Transonic Dynamics Tunnel Contributions To Rotorcraft Technology And Development
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Author :
language : en
Publisher: DIANE Publishing
Release Date : 2001
A Historical Overview Of Aeroelasticity Branch And Transonic Dynamics Tunnel Contributions To Rotorcraft Technology And Development written by and has been published by DIANE Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
Aerodynamic Characteristics Of A Rotorcraft Airfoil Designed For The Tip Region Of A Main Rotor Blade
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Author : Kevin W. Noonan
language : en
Publisher:
Release Date : 1991
Aerodynamic Characteristics Of A Rotorcraft Airfoil Designed For The Tip Region Of A Main Rotor Blade written by Kevin W. Noonan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Aerofoils categories.
Nasa Langley Scientific And Technical Information Output 2001
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Author :
language : en
Publisher:
Release Date : 2002
Nasa Langley Scientific And Technical Information Output 2001 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Aerodynamic Characteristics Of Three Helicopter Rotor Airfoil Sections At Reynolds Number From Model Scale To Full Scale At Mach Numbers From 0 35 To 0 90
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Author :
language : en
Publisher:
Release Date : 1980
Aerodynamic Characteristics Of Three Helicopter Rotor Airfoil Sections At Reynolds Number From Model Scale To Full Scale At Mach Numbers From 0 35 To 0 90 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1995
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aeronautics categories.
Aeronautical Engineering
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Author :
language : en
Publisher:
Release Date : 1991
Aeronautical Engineering written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Aeronautics categories.
Nasa Scientific And Technical Publications
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Author :
language : en
Publisher:
Release Date : 1987
Nasa Scientific And Technical Publications written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Aeronautics categories.