YF-23 Black Widow II (Wallpaper 4)
Sunday, May 29, 2011
image dimensions : 1092 x 682
YF-23 Black Widow II (Wallpaper 4)
YF-23 Black Widow II fighter aircraft photo wallpaper gallery 4. YF-23 Black Widow II fighter aircraft pictures and images collection 4.
Both YF-23s were furnished in the configuration specified before the requirement for thrust reversing was dropped. The weapons bay was configured for weapons launch but no missiles were fired, unlike Lockheed's demonstration aircraft. The YF-23s flew 50 times for a total of 65.2 hours. The first YF-23 with P&W engines supercruised at Mach 1.43 on 18 September 1990 and the second YF-23 with GE engines reached Mach 1.6 on 29 November 1990. For comparison, the YF-22 achieved Mach 1.58 in supercruise. The flight testing demonstrated Northrop's predicted performance values for the YF-23. The YF-22 won the competition in April 1991. The YF-23 design was more stealthy and faster, but the YF-22 was more agile. It has been speculated in the aviation press that the YF-22 was also seen as more adaptable to the Navy's Navalized Advanced Tactical Fighter (NATF), though as it turned out the US Navy abandoned NATF a few months later. After losing the competition, both YF-23s were transferred to NASA's Dryden Flight Research Center, at Edwards AFB, California without the engines. YF-23 Black Widow II (Wallpaper 4). YF-23 Black Widow II fighter aircraft photo wallpaper gallery 4. YF-23 Black Widow II fighter aircraft pictures and images collection 4. NASA planned to use one of the aircraft to study strain gauge loads calibration techniques, but this did not occur. The YF-23 was stealthier than the F-22 Raptor. The two ruddervators reduce the Radar Cross Signature of the YF-23 significantly. This is beacuse instead of having four extremly large control surfaces on the tail, there are only two. The F-22 Raptor design utilizes the traditional configuration of two rudders, which are canted outward, and two elevators. This make the RCS larger. Another RCS reducing feature is the engines. These are mounted in nacelles in the wing that blend gracefully into the wing on the top, and form an extension of the fueslage on the bottom. The larger bottom fuselage lets it pack more missiles and other expendable weapons. The intake duct is angled up and inward to reflect radar beams and keep them from hitting the fast moving compressor face. The intake duct starts on the lower edge of the wing and moves through it onto the top of the wing. This feature can also reduce the RCS signature from a look down-shoot down radar from an aircraft flying overhead. Also reducing the RCS, is the way the leading and trailing edge of all surfaces are angled. All of the leading and trailing edges are angled the same. Therefore, the front of the right wing is parallel to the left wing's trailing edge, and the left section of the nose. For example, the leding edge of the wing is parallel to the trailing edge of the wing on the other side. YF-23 Black Widow II (Wallpaper 4). YF-23 Black Widow II fighter aircraft photo wallpaper gallery 4. YF-23 Black Widow II fighter aircraft pictures and images collection 4.
YF-23 Black Widow II fighter aircraft photo wallpaper gallery 4. YF-23 Black Widow II fighter aircraft pictures and images collection 4.
Both YF-23s were furnished in the configuration specified before the requirement for thrust reversing was dropped. The weapons bay was configured for weapons launch but no missiles were fired, unlike Lockheed's demonstration aircraft. The YF-23s flew 50 times for a total of 65.2 hours. The first YF-23 with P&W engines supercruised at Mach 1.43 on 18 September 1990 and the second YF-23 with GE engines reached Mach 1.6 on 29 November 1990. For comparison, the YF-22 achieved Mach 1.58 in supercruise. The flight testing demonstrated Northrop's predicted performance values for the YF-23. The YF-22 won the competition in April 1991. The YF-23 design was more stealthy and faster, but the YF-22 was more agile. It has been speculated in the aviation press that the YF-22 was also seen as more adaptable to the Navy's Navalized Advanced Tactical Fighter (NATF), though as it turned out the US Navy abandoned NATF a few months later. After losing the competition, both YF-23s were transferred to NASA's Dryden Flight Research Center, at Edwards AFB, California without the engines. YF-23 Black Widow II (Wallpaper 4). YF-23 Black Widow II fighter aircraft photo wallpaper gallery 4. YF-23 Black Widow II fighter aircraft pictures and images collection 4. NASA planned to use one of the aircraft to study strain gauge loads calibration techniques, but this did not occur. The YF-23 was stealthier than the F-22 Raptor. The two ruddervators reduce the Radar Cross Signature of the YF-23 significantly. This is beacuse instead of having four extremly large control surfaces on the tail, there are only two. The F-22 Raptor design utilizes the traditional configuration of two rudders, which are canted outward, and two elevators. This make the RCS larger. Another RCS reducing feature is the engines. These are mounted in nacelles in the wing that blend gracefully into the wing on the top, and form an extension of the fueslage on the bottom. The larger bottom fuselage lets it pack more missiles and other expendable weapons. The intake duct is angled up and inward to reflect radar beams and keep them from hitting the fast moving compressor face. The intake duct starts on the lower edge of the wing and moves through it onto the top of the wing. This feature can also reduce the RCS signature from a look down-shoot down radar from an aircraft flying overhead. Also reducing the RCS, is the way the leading and trailing edge of all surfaces are angled. All of the leading and trailing edges are angled the same. Therefore, the front of the right wing is parallel to the left wing's trailing edge, and the left section of the nose. For example, the leding edge of the wing is parallel to the trailing edge of the wing on the other side. YF-23 Black Widow II (Wallpaper 4). YF-23 Black Widow II fighter aircraft photo wallpaper gallery 4. YF-23 Black Widow II fighter aircraft pictures and images collection 4.
- YF-23 Black Widow II (Wallpaper 1)
- YF-23 Black Widow II (Wallpaper 2)
- YF-23 Black Widow II (Wallpaper 3)
Labels: YF-23 Black Widow II
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