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Upgrades and Modifications of the NASA Ames HFFAF Ballistic Range
NTRS Full-Text: Click to View  [PDF Size: 2.10 MB]
Author and Affiliation:
Bogdanoff, David W.(Analytical Mechanics Associates, Inc., Moffett Field, CA, United States)
Wilder, Michael C.(NASA Ames Research Center, Moffett Field, CA, United States)
Cornelison, Charles J.(NASA Ames Research Center, Moffett Field, CA, United States)
Perez, Alfredo J.(Jacobs Technology, Inc., Moffett Field, CA, United States)
Abstract: The NASA Ames Hypervelocity Free Flight Aerodynamics Facility ballistic range is described. The various configurations of the shadowgraph stations are presented. This includes the original stations with film and configurations with two different types of digital cameras. Resolution tests for the 3 shadowgraph station configurations are described. The advantages of the digital cameras are discussed, including the immediate availability of the shadowgraphs. The final shadowgraph station configuration is a mix of 26 Nikon cameras and 6 PI-MAX2 cameras. Two types of trigger light sheet stations are described visible and IR. The two gunpowders used for the NASA Ames 6.251.50 light gas guns are presented. These are the Hercules HC-33-FS powder (no longer available) and the St. Marks Powder WC 886 powder. The results from eight proof shots for the two powders are presented. Both muzzle velocities and piston velocities are 5 9 lower for the new St. Marks WC 886 powder than for the old Hercules HC-33-FS powder (no longer available). The experimental and CFD (computational) piston and muzzle velocities are in good agreement. Shadowgraph-reading software that employs template-matching pattern recognition to locate the ballistic-range model is described. Templates are generated from a 3D solid model of the ballistic-range model. The accuracy of the approach is assessed using a set of computer-generated test images.
Publication Date: Sep 17, 2017
Document ID:
20170011587
(Acquired Dec 13, 2017)
Subject Category: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
Report/Patent Number: ARC-E-DAA-TN45651
Document Type: Conference Paper
Meeting Information: Meeting of the Aeroballistic Range Association; 68th; 17-23 Sep. 2017; Monterey, CA; United States
Meeting Sponsor: Aeroballistic Range Association; unknown
Contract/Grant/Task Num: NNA15BB15C; NNA16BD26C
Financial Sponsor: NASA Ames Research Center; Moffett Field, CA, United States
Organization Source: NASA Ames Research Center; Moffett Field, CA, United States
Description: 35p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Public use permitted
NASA Terms: HYPERSONIC FLIGHT; BALLISTIC RANGES; SHADOWGRAPH PHOTOGRAPHY; DIGITAL CAMERAS; PATTERN RECOGNITION; POWDER (PARTICLES); COMPUTATIONAL FLUID DYNAMICS; TEMPLATES; LIGHT GAS GUNS; PROVING; COMPUTER AIDED DESIGN
Other Descriptors: BALLISTIC RANGE
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Last Modified: December 13, 2017
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