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aahs_p002126, US Navy Photogrpah
Bell L-39 Experimental Aircraft.Head on view Public domain photograph of jet aircraft, free to use, no copyright restrictions image - Picryl description
aahs_p002125, US Navy Photogrpah
Bell L-39 Experimental Aircraft Showing wing sweep (Approx. 30 degrees) and 80% slats extended
aahs_p002124, US Navy Photogrpah
Modified Bell P-63 Project aircraft used for swept wing research
aahs_p002128, US Navy Photogrpah
Bell L-39 Experimental Aircraft Showing clean wing design (no leading edge devices)