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Date of download: 6/28/2016 Copyright © 2016 SPIE. All rights reserved. Photographs of AAOL hardware during testing. The sensor turret is shown when integrated.

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Presentation on theme: "Date of download: 6/28/2016 Copyright © 2016 SPIE. All rights reserved. Photographs of AAOL hardware during testing. The sensor turret is shown when integrated."— Presentation transcript:

1 Date of download: 6/28/2016 Copyright © 2016 SPIE. All rights reserved. Photographs of AAOL hardware during testing. The sensor turret is shown when integrated on the aircraft receiving the green test beam and when integrated into a wind tunnel test section. Figure Legend: From: Aero-optical jitter estimation using higher-order wavefronts Opt. Eng. 2013;52(7):071411-071411. doi:10.1117/1.OE.52.7.071411

2 Date of download: 6/28/2016 Copyright © 2016 SPIE. All rights reserved. Higher-order (tilt-removed) rms wavefront error measured at various under various flight conditions with flat window and conformal aperture windows. (a) Actual measured rms WFE. (b) Nondimensionalized WFE. Figure Legend: From: Aero-optical jitter estimation using higher-order wavefronts Opt. Eng. 2013;52(7):071411-071411. doi:10.1117/1.OE.52.7.071411

3 Date of download: 6/28/2016 Copyright © 2016 SPIE. All rights reserved. Measured jitter values from AAOL wavefront data for fixed-geometry tests with flat and conformal window. (a) Jitter versus line-of- sight angle. (b) Jitter versus q, where q=ρu∞2/2. Figure Legend: From: Aero-optical jitter estimation using higher-order wavefronts Opt. Eng. 2013;52(7):071411-071411. doi:10.1117/1.OE.52.7.071411

4 Date of download: 6/28/2016 Copyright © 2016 SPIE. All rights reserved. CFD surface grids (top left and right), and streamwise-aligned slices (bottom, left and right) showing the grid system and instantaneous Mach number. Figure Legend: From: Aero-optical jitter estimation using higher-order wavefronts Opt. Eng. 2013;52(7):071411-071411. doi:10.1117/1.OE.52.7.071411

5 Date of download: 6/28/2016 Copyright © 2016 SPIE. All rights reserved. First 10 POD modes for CFD and AAOL flight test aero-optics at Mach 0.61: (a) CFD, coarse grid, (b) CFD, refined grid, (c) CFD, refined grid/refined timestep (d) AAOL. Flow is from left to right. Figure Legend: From: Aero-optical jitter estimation using higher-order wavefronts Opt. Eng. 2013;52(7):071411-071411. doi:10.1117/1.OE.52.7.071411

6 Date of download: 6/28/2016 Copyright © 2016 SPIE. All rights reserved. Nondimensionalized temporal properties of AAOL higher-order aero-optics and CFD modeling. (a) Temporal PSDs. (b) Cumulative PSDs. Plots are in units of nondimensionalized variance, i.e., [μm2/m2]. Figure Legend: From: Aero-optical jitter estimation using higher-order wavefronts Opt. Eng. 2013;52(7):071411-071411. doi:10.1117/1.OE.52.7.071411

7 Date of download: 6/28/2016 Copyright © 2016 SPIE. All rights reserved. Correlation coefficients of aero-optical tilt with higher-order modes for the AAOL turret. (a) Mach 0.4 CFD. (b) Mach 0.61 CFD. Figure Legend: From: Aero-optical jitter estimation using higher-order wavefronts Opt. Eng. 2013;52(7):071411-071411. doi:10.1117/1.OE.52.7.071411

8 Date of download: 6/28/2016 Copyright © 2016 SPIE. All rights reserved. Differential jitter variance between CFD-based wavefront jitter and the jitter estimate using higher-order wavefront modes only and variable length time history. (a) Mach 0.4 CFD. (b) Mach 0.61 CFD. Figure Legend: From: Aero-optical jitter estimation using higher-order wavefronts Opt. Eng. 2013;52(7):071411-071411. doi:10.1117/1.OE.52.7.071411

9 Date of download: 6/28/2016 Copyright © 2016 SPIE. All rights reserved. Comparison of design data tilt properties and estimator output from test data. Time history of jitter from CFD modeling is compared to the jitter estimate in each axis for (a) Mach 0.4 CFD and (b) Mach 0.61 CFD. Single-axis jitter PSD and cumulative jitter for applying CFD-based tilt estimator to CFD data for (c) Mach 0.4 CFD and (d) Mach 0.61 CFD. Figure Legend: From: Aero-optical jitter estimation using higher-order wavefronts Opt. Eng. 2013;52(7):071411-071411. doi:10.1117/1.OE.52.7.071411

10 Date of download: 6/28/2016 Copyright © 2016 SPIE. All rights reserved. Aero-optical jitter output from CFD-derived tilt estimator applied to AAOL higher-order wavefront data. Plots show time history of jitter estimates for (a) Mach 0.4 flight test and (b) Mach 0.61 flight tests. A comparison of the single-axis jitter PSD and cumulative jitter from the estimator to the design data from CFD is shown for (c) Mach 0.4 CFD and (d) Mach 0.61 CFD. Figure Legend: From: Aero-optical jitter estimation using higher-order wavefronts Opt. Eng. 2013;52(7):071411-071411. doi:10.1117/1.OE.52.7.071411

11 Date of download: 6/28/2016 Copyright © 2016 SPIE. All rights reserved. Comparison of aero-optics jitter temporal properties derived from Mach 0.4 and Mach 0.61 AAOL higher-order wavefront data. Magnitude of jitter and temporal frequency have been normalized according to Eqs. (21) and (2). Figure Legend: From: Aero-optical jitter estimation using higher-order wavefronts Opt. Eng. 2013;52(7):071411-071411. doi:10.1117/1.OE.52.7.071411


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