超级军网请教个超级虫子的问题
来源：百度文库 编辑：超级军网 时间：2024/04/29 15:17:22
那位高手知道为何f-18e/f 的挂架向外倾斜6度？那不是增加阻力吗？那位高手知道为何f-18e/f 的挂架向外倾斜6度？那不是增加阻力吗？
某些状态下挂物投放时分离不好， 倾斜6度是没办法的办法
同样的还有那个翼刀， 十几度迎角时会掉机翼。
f-18e/f这飞机的开发在美国那里算是比较臭的
同样的还有那个翼刀， 十几度迎角时会掉机翼。
f-18e/f这飞机的开发在美国那里算是比较臭的
翼刀只有EA－18G才有，可能是为了挂电子战舱的问题。F／A－18E／F没有翼刀，
贝尔纳多特 发表于 2009-8-17 12:19 
早些时候F／A－18E／F我记得可是有的。 不过最后改成打孔了
早些时候F／A－18E／F我记得可是有的。 不过最后改成打孔了
bensmat 发表于 2009-8-17 12:22
是你记错了吧
是你记错了吧
贝尔纳多特 发表于 2009-8-17 12:24
我记得当时是NＡＳＡ还是那个机构的文章里登出来的。 有时间我去找找看。
不过不论怎样， 超级虫子掉机翼这个问题够臭的， 特别是还是在几十度迎角这种长用的迎角下发生
我记得当时是NＡＳＡ还是那个机构的文章里登出来的。 有时间我去找找看。
不过不论怎样， 超级虫子掉机翼这个问题够臭的， 特别是还是在几十度迎角这种长用的迎角下发生
算了，我说的那篇文章我也懒得找了， 随便狗了以下
http://www.flightglobal.com/pdfa ... -09%20-%201843.html
Flight tests to follow a more permanent
fix began with a second
phase in late 2000 and culminated
with the development of a package
of improvements that have been in
flight test from August 2003 to the
present. Although some testing
continues, the baseline improvements
are now being introduced to
the fleet as well as to new production
aircraft. They include a sawtooth
leading-edge flap that
reduces the buffet problem, and
the resealing of the wingfold hinge
door. The most significant new
external feature is a 127mm (5in)-
high, full-chord wing fence at butt
line 152, which alters the flow and
prevents the wing drop as well as
reducing buffet onset and intensity.
算了，我说的那篇文章我也懒得找了， 随便狗了以下
http://www.flightglobal.com/pdfa ... -09%20-%201843.html
Flight tests to follow a more permanent
fix began with a second
phase in late 2000 and culminated
with the development of a package
of improvements that have been in
flight test from August 2003 to the
present. Although some testing
continues, the baseline improvements
are now being introduced to
the fleet as well as to new production
aircraft. They include a sawtooth
leading-edge flap that
reduces the buffet problem, and
the resealing of the wingfold hinge
door. The most significant new
external feature is a 127mm (5in)-
high, full-chord wing fence at butt
line 152, which alters the flow and
prevents the wing drop as well as
reducing buffet onset and intensity.
E/F进气口向下向外斜切一刀后，会吞蛋蛋的尾气。
bensmat 发表于 2009-8-17 12:49
这个不是早些时候有的，是因为发现问题后，进行飞行测试的几种方案里的一种，但是后来没有采用。
DATE:07/01/98
SOURCE:Flight International
Boeing and the US Navy identify F/A-18E/F wing-drop solutions
Graham Warwick/WASHINGTON DC
Boeing and the US Navy are testing three solutions to the wing-drop problem encountered during flight testing of the F/A-18E/F. The Navy is now "extremely confident" that an expensive wing redesign will not be required, says a US Department of Defense official.
Wing drops of up to 30 degrees occur during manoeuvres at high subsonic Mach numbers, making it difficult for the pilot to track a target during an air-to-air gun engagement. Airflow over the fairings covering the F/A-18E/F's wing-fold hinges is believed to be the cause of the asymmetric stall which results in the wing drop.
Three "solution sets" have been demonstrated which overcome the problem, and flight testing continues in an effort to optimise the cure and determine its impact on performance, the official says.
The first solution involves fitting stall strips on the wing upper surface inboard of the hinge fairing. The spanwise strips are about 450mm long and "several" are mounted one behind the other on each side of the wing, beginning close to the leading edge.
The second solution involves a wing-fold fence which runs chordwise across the wing upper-surface just inboard of the hinge fairing. The fence is designed to keep the airflow over the outer section of the wing away from that over the mid-span area, where the stall occurs.
The third solution involves a "porous" hinge fairing. Slots in the fairing allow air to flow in both directions through the wing fold and effectively make the fairing "aerodynamically invisible". This cure was developed after flights with the hinge fairings removed showed no wing drop.
Flight tests are continuing to determine which solution has the least impact on weight, drag, mission radius and radar cross-section. The porous fairing looks the most promising, but the Navy "has not declared victory yet", the official says. Some modifications improve aircraft controllability, the official says, notably the 450mm inboard extension of the wing leading-edge "snags" which is part of all three solution sets.
By mid-December, testing was "about 90% complete" and had been accomplished without delaying the F/A-18E/F development flight-test programme, the official says. A solution set is expected to be selected in early January.
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这个不是早些时候有的，是因为发现问题后，进行飞行测试的几种方案里的一种，但是后来没有采用。
DATE:07/01/98
SOURCE:Flight International
Boeing and the US Navy identify F/A-18E/F wing-drop solutions
Graham Warwick/WASHINGTON DC
Boeing and the US Navy are testing three solutions to the wing-drop problem encountered during flight testing of the F/A-18E/F. The Navy is now "extremely confident" that an expensive wing redesign will not be required, says a US Department of Defense official.
Wing drops of up to 30 degrees occur during manoeuvres at high subsonic Mach numbers, making it difficult for the pilot to track a target during an air-to-air gun engagement. Airflow over the fairings covering the F/A-18E/F's wing-fold hinges is believed to be the cause of the asymmetric stall which results in the wing drop.
Three "solution sets" have been demonstrated which overcome the problem, and flight testing continues in an effort to optimise the cure and determine its impact on performance, the official says.
The first solution involves fitting stall strips on the wing upper surface inboard of the hinge fairing. The spanwise strips are about 450mm long and "several" are mounted one behind the other on each side of the wing, beginning close to the leading edge.
The second solution involves a wing-fold fence which runs chordwise across the wing upper-surface just inboard of the hinge fairing. The fence is designed to keep the airflow over the outer section of the wing away from that over the mid-span area, where the stall occurs.
The third solution involves a "porous" hinge fairing. Slots in the fairing allow air to flow in both directions through the wing fold and effectively make the fairing "aerodynamically invisible". This cure was developed after flights with the hinge fairings removed showed no wing drop.
Flight tests are continuing to determine which solution has the least impact on weight, drag, mission radius and radar cross-section. The porous fairing looks the most promising, but the Navy "has not declared victory yet", the official says. Some modifications improve aircraft controllability, the official says, notably the 450mm inboard extension of the wing leading-edge "snags" which is part of all three solution sets.
By mid-December, testing was "about 90% complete" and had been accomplished without delaying the F/A-18E/F development flight-test programme, the official says. A solution set is expected to be selected in early January.
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Rate this article
1 2 3 4 5
贝尔纳多特 发表于 2009-8-17 14:01
DATE:07/01/98
DATE:07/01/98
Ｔｈｅ flightglobal article was 2004
bensmat 发表于 2009-8-17 14:09
那是试飞过程，那文章上不是写了test pilots .
那是试飞过程，那文章上不是写了test pilots .
是呀，这个气动外形，我也注意到过...合着还真得好好研究研究.
多谢以上几位，长见识了。
贝尔纳多特 发表于 2009-8-17 14:29
下面这段也是试飞？ 要不要我来翻译一下？
Although some testing
continues, the baseline improvements
are now being introduced to
the fleet as well as to new production
aircraft. They include a sawtooth
leading-edge flap that
reduces the buffet problem, and
the resealing of the wingfold hinge
door. The most significant new
external feature is a 127mm (5in)-
high, full-chord wing fence at butt
line 152...
下面这段也是试飞？ 要不要我来翻译一下？
Although some testing
continues, the baseline improvements
are now being introduced to
the fleet as well as to new production
aircraft. They include a sawtooth
leading-edge flap that
reduces the buffet problem, and
the resealing of the wingfold hinge
door. The most significant new
external feature is a 127mm (5in)-
high, full-chord wing fence at butt
line 152...
bensmat 发表于 2009-8-18 09:08
原来计划在BLOCK II搞这个升级
Beyond the Block 2 Super Hornet, other improvements in the pipeline include:
Various aerodynamic improvements, such as wing fences.
A new 20 x 25 centimeter (8 x 10 inch) tactical display for the rear cockpit. This item was delivered from late 2005 and may be retrofitted to earlier Block 2 machines.
JHMCS support for the back-seater.
A solid-state data recorder, now being retrofitted to Super Hornets and to be introduced to new-build machines in 2007. The recorder will be used to store annotated targeting pod imagery for relay elsewhere via datalink, or accept such imagery from other platforms. Software upgrades will follow to network such imagery `
A "Multifunction Information Distribution System (MIDS)" high-speed datalink, complementary to a"Joint Tactical Radio System (JTRS)", a programmable radio that will be interoperable with a wide range of current radios. Ultimately, the Super Bug will be integrated into a combat network using standard Internet protocols.
An improved navigation system that will permit delivery of GPS-guided weapons with greater accuracy.
A "Hornet Autonomous Realtime Targeting (HART)" system now being developed by Boeing that will using the AN/APG-79's SAR mode to get a radar image of target, then convert the image into a template for a new precision infrared terminal guidance seeker attached to a 225 kilogram (500 pound) GBU-38 JDAM bomb; an AGM-154C Joint Stand-Off Weapon (JSOW) glide bomb; or the AGM-158 Joint Air-to-Surface Standoff Missile (JASSM). HART and its associated weapons will be introduced into service in late 2007 at earliest.
An enhancement to the aircraft's self-diagnostic system that allows diagnostic data to be relayed from an aircraft in flight back to the base. This would be useful in a high-turnaround environment, allowing service crews to be ready to install fixes moments after the aircraft touches down. This scheme was demonstrated experimentally by Boeing in 2004. It is unclear if it has been approved for operational implementation.
Integration of ATFLIR imagery with a digital terrain database, allowing a WSO to match a target viewed through ATFLIR with the target stored in the database.
A "Positive Identification System (PIDS)" to provide non-cooperative aerial target identification.
An "infrared search & track (IRST)" to provide passive sensing capability when the radar system is being jammed. Boeing is working on installing an improved AN/AAS-42 IRST, like that originally carried on the Tomcat, into the front of a 1,820 liter (480 US gallon) fuel tank for centerline carriage, where the IRST pod will have the best available field of view. There had been consideration of fitting an IRST into the airframe, but the "podded" solution was cheaper. The pod will also still be able to carry 1,250 liters (330 US gallons) of fuel. Initial deliveries will be in 2012.
但是后来波音给出的列表上BLOCK II没有执行这个升级
Upgradeability
Long-term designed in versatility ensures the Super Hornet's investment value. Current upgrades delivered in the Block Two configuration include:
Active electronically scanned array (AESA) radar
Advanced targeting forward-looking infrared (ATFLIR) system
Joint-helmet mounted cueing system (JHMCS)
Multifunctional information distribution system (MIDS)
Advanced aft crew station
Fibre channel switch for increased data processing capability
Fully integrated weapons systems and sensors for reduced crew workload and increased capability.
原来计划在BLOCK II搞这个升级
Beyond the Block 2 Super Hornet, other improvements in the pipeline include:
Various aerodynamic improvements, such as wing fences.
A new 20 x 25 centimeter (8 x 10 inch) tactical display for the rear cockpit. This item was delivered from late 2005 and may be retrofitted to earlier Block 2 machines.
JHMCS support for the back-seater.
A solid-state data recorder, now being retrofitted to Super Hornets and to be introduced to new-build machines in 2007. The recorder will be used to store annotated targeting pod imagery for relay elsewhere via datalink, or accept such imagery from other platforms. Software upgrades will follow to network such imagery `
A "Multifunction Information Distribution System (MIDS)" high-speed datalink, complementary to a"Joint Tactical Radio System (JTRS)", a programmable radio that will be interoperable with a wide range of current radios. Ultimately, the Super Bug will be integrated into a combat network using standard Internet protocols.
An improved navigation system that will permit delivery of GPS-guided weapons with greater accuracy.
A "Hornet Autonomous Realtime Targeting (HART)" system now being developed by Boeing that will using the AN/APG-79's SAR mode to get a radar image of target, then convert the image into a template for a new precision infrared terminal guidance seeker attached to a 225 kilogram (500 pound) GBU-38 JDAM bomb; an AGM-154C Joint Stand-Off Weapon (JSOW) glide bomb; or the AGM-158 Joint Air-to-Surface Standoff Missile (JASSM). HART and its associated weapons will be introduced into service in late 2007 at earliest.
An enhancement to the aircraft's self-diagnostic system that allows diagnostic data to be relayed from an aircraft in flight back to the base. This would be useful in a high-turnaround environment, allowing service crews to be ready to install fixes moments after the aircraft touches down. This scheme was demonstrated experimentally by Boeing in 2004. It is unclear if it has been approved for operational implementation.
Integration of ATFLIR imagery with a digital terrain database, allowing a WSO to match a target viewed through ATFLIR with the target stored in the database.
A "Positive Identification System (PIDS)" to provide non-cooperative aerial target identification.
An "infrared search & track (IRST)" to provide passive sensing capability when the radar system is being jammed. Boeing is working on installing an improved AN/AAS-42 IRST, like that originally carried on the Tomcat, into the front of a 1,820 liter (480 US gallon) fuel tank for centerline carriage, where the IRST pod will have the best available field of view. There had been consideration of fitting an IRST into the airframe, but the "podded" solution was cheaper. The pod will also still be able to carry 1,250 liters (330 US gallons) of fuel. Initial deliveries will be in 2012.
但是后来波音给出的列表上BLOCK II没有执行这个升级
Upgradeability
Long-term designed in versatility ensures the Super Hornet's investment value. Current upgrades delivered in the Block Two configuration include:
Active electronically scanned array (AESA) radar
Advanced targeting forward-looking infrared (ATFLIR) system
Joint-helmet mounted cueing system (JHMCS)
Multifunctional information distribution system (MIDS)
Advanced aft crew station
Fibre channel switch for increased data processing capability
Fully integrated weapons systems and sensors for reduced crew workload and increased capability.
ST. LOUIS, July 8, 2009 -- Boeing [NYSE: BA] today unveiled the first of 24 F/A-18F Block II Super Hornets for the Royal Australian Air Force (RAAF) during a ceremony at Boeing Integrated Defense Systems' production facilities in St. Louis. The aircraft will be delivered later this month, three months ahead of schedule.
看看波音提供给澳大利亚的BLOCKII上哪来的翼刀
超级大黄蜂
给tg来 2套爽爽？？
给tg来 2套爽爽？？
掉机翼？
贝尔纳多特 发表于 2009-8-18 10:06
装翼刀又不是升级。 装翼刀是属于为解决飞机基本飞行问题打得布丁， 飞机并没有得到新的能力。
装翼刀又不是升级。 装翼刀是属于为解决飞机基本飞行问题打得布丁， 飞机并没有得到新的能力。
bensmat 发表于 2009-8-17 12:22
acoustics 发表于 2009-8-18 16:35
一边的机翼突然失速，导致两边机翼升力不平衡，飞机猛地滚转
一边的机翼突然失速，导致两边机翼升力不平衡，飞机猛地滚转