Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Albert R. Allen"'
Publikováno v:
28th AIAA/CEAS Aeroacoustics 2022 Conference.
Publikováno v:
SAE Int J Veh Dyn Stab NVH
Corrugated-core sandwich structures with integrated acoustic resonator arrays have been of recent interest for launch vehicle noise control applications. Previous tests and analyses have demonstrated the ability of this concept to increase sound abso
Autor:
Albert R. Allen, Adam Przekop
Publikováno v:
Journal of Aircraft. 52:692-702
An efficient multi-objective design tailoring procedure seeking to improve the vibroacoustic performance of a fuselage panel while maintaining or reducing weight is presented. The structure considered is the pultruded rod stitched efficient unitized
Sound Transmission Loss Through a Corrugated-Core Sandwich Panel With Integrated Acoustic Resonators
Publikováno v:
Volume 13: Vibration, Acoustics and Wave Propagation.
The goal of this study is to better understand the effect of structurally integrated resonators on the transmission loss of a sandwich panel. The sandwich panel has facesheets over a corrugated core, which creates long aligned chambers that run paral
Autor:
Adam Przekop, Albert R. Allen
Publikováno v:
ASME 2012 Noise Control and Acoustics Division Conference.
A lighter, more robust airframe design is required to withstand the loading inherent to next generation non–cylindrical commercial airliners. The Pultruded Rod Stitched Efficient Unitized Structure concept, a highly integrated composite design invo
Autor:
Chester W. Moen, Albert R. Allen
Publikováno v:
The Journal of Thoracic and Cardiovascular Surgery. 49:388-397
Publikováno v:
Diseases of the Chest. 28:537-547
1. The use of antibiotics in the treatment of tuberculosis should follow the same basic requirements as the use of antibiotics against any other bacterial disease. An adequate period of treatment with the three drugs lies between six months and one y
Autor:
Andrey W. Stevenson, Albert R. Allen
Publikováno v:
The Journal of Bone & Joint Surgery. 39:32-42
This is an early report of a regimen of treatment in which streptomycin, paraaminosalicylic acid, and isonicotinic acid hydrazide were administered to seventeen patients with bone tuberculosis on admittance to the Hospital. These drugs were used cont
Autor:
Albert R. Allen
Publikováno v:
The American Journal of Medicine. 25:75-88
Autor:
Albert R. Allen
Publikováno v:
Diseases of the Chest. 33:275-284
SUMMARY Reactivation of tuberculosis is due to the presence of virulent viable tubercle bacilli that remain in the tissue. Because of the tendency of the blood vessels in the involved area to be obliterated, chemotherapy does not penetrate into the c