NASA Logo, External Link
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed AddThis share icon
 

Record Details

Record 54 of 872
The Chemistry of Saudi Arabian Sand - A Deposition Problem on Helicopter Turbine Airfoils
Author and Affiliation:
Smialek, James L.(NASA Lewis Research Center, Cleveland, OH, United States)
Archer, Frances A.(NASA Lewis Research Center, Cleveland, OH, United States)
Garlick, Ralph G.(NASA Lewis Research Center, Cleveland, OH, United States)
Abstract: Operations in the Persian Gulf have exposed military helicopter turbines to excessive amounts of ingested sand. Fine particles, less than 10 microns, are able to bypass the particle separators and enter the cooling and combustion systems. The initial sand chemistry varies by location, but is made up of a calcium aluminum silicate glass, SiO2 low quartz, (Ca,Mg)CO3 dolomite, CaCO3 calcite, and occasionally NaCl rocksalt. The sand reacts in the hot combustion gases and deposits onto the turbine vanes as CaSO4, glass, and various crystalline silicates. Deposits up to 5 mm thick have been collected. Although cooling hole plugging is a considerable problem, excessive corrosion is not commonly observed due to the high melting point of CaSO4.
Publication Date: Jan 01, 1992
Document ID:
19930069471
(Acquired Dec 28, 1995)
Accession Number: 93A53468
Subject Category: STRUCTURAL MECHANICS
Report/Patent Number: E-7459
Document Type: Conference Paper
Publication Information: In: International SAMPE Technical Conference, 24th and International SAMPE Metals and Metals Processing Conference, 3rd, Toronto, Canada, Oct. 20-22, 1992, Proceedings. Vol. 3 (A93-53376 23-23); p. M63-M77.
Publisher Information: Society for the Advancement of Material and Process Engineering, Covina, CA, United States
Financial Sponsor: NASA; United States
Organization Source: NASA Lewis Research Center; Cleveland, OH, United States
Description: 15p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: CHEMICAL COMPOSITION; CORROSION TESTS; EROSION; HELICOPTER ENGINES; SANDS; SAUDI ARABIA; TURBINE ENGINES; ALUMINUM SILICATES; CALCIUM COMPOUNDS; CALCIUM SILICATES; DEPOSITION; GLASS; SULFATES
Imprint And Other Notes: In: International SAMPE Technical Conference, 24th and International SAMPE Metals and Metals Processing Conference, 3rd, Toronto, Canada, Oct. 20-22, 1992, Proceedings. Vol. 3 (A93-53376 23-23), p. M63-M77.
Availability Source: Other Sources
› Back to Top
Find Similar Records
NASA Logo, External Link
NASA Official: Gerald Steeman
Site Curator: STI Program
Last Modified: December 08, 2011
Contact Us