[推荐]看看老外们是如何比较飞机机动性的~~~

来源:百度文库 编辑:超级军网 时间:2024/04/27 19:25:06
<P>比较的飞机是F16(Viper)和MIG-29(Fulcrum)[大家一起来翻译,每人翻一段]</P>
<P>(图表是用Falcon4模拟得到的,当然采用的是真实性能数据)</P>
<P>图例说明:Note that we will draw curves for both the Viper and the Fulcrum overlaid on each other. This makes the graphs a little busy but it’s by far the easiest way to get a good visual picture of how the two jets match up. The F-16 will be blue lines and the MiG-29 will be drawn in red. Heavy lines will mark the flight envelope limits determined by aerodynamic design, structural <I>g</I> load tolerance and maximum design speed. The lighter lines will represent neutral Specific Excess Power (Ps = 0), the curve representing the point at which available thrust is not able to generate further acceleration.</P>
<P>The calculations used to derive the data for these curve plots are made using the same level of complexity as the flight model in the game. As such, the curves will be a true representation of what you will see in the game. That said, there are some assumptions made in performing the calculations that are used to plot the curves but these are situational. The same treatment is applied to generating curves for both aircraft. For example, in each case we start with clean aircraft, free of external stores but with 100% internal fuel aboard. All the calculations are done with maximum thrust available used also, with the engine in full afterburner. We will also only consider level turn performance for comparative purposes. Lastly, we assume a standard atmosphere.(两架飞机的比较条件:无任何外挂。100%机内燃油。引擎全开加力。气压是一个标准大气压。)</P>
<P>

上面是两机在海平面高度下的能量机动图(兰色是F16,红色是MIG29)</P>
<P>海平面高度能量机动性比较:</P>
<P>The curves seem almost to be overlaid right on top of each other. From this it’s easy to see that the fight will be very close, all other things being equal.(显而易见,两架战机在这个高度性能非常接近)</P>
<P>Looking first at the Ps curves, the MiG-29 has slightly worse sustained turn performance through most of the envelope as the red Ps curve stays below the blue curve. Only at the very low end of the speed range, where the engine/inlet design of the F-16 reduce it’s sustained turn rate, can the MiG-29 hold a turn better than the F-16. For the most part though, the F-16 can hold turn rates marginally better provided the fight stays above 220kts. However this advantage is razor thin for the F-16 pilot and for all practical purposes won’t really be exploitable.</P>
<P>The left side of the limit curves shows the aerodynamic limits of the two jets which govern the amount of lift that can be generated and hence the instantaneous turn rate. In this case, the MiG-29 has advantages in both higher instantaneous turn rate and smaller turn radius at any given speed up to corner speed for the F-16 (recall that corner speed is the highest apex of the limit curves).</P>
<P>From the F-16’s corner speed up to the design airspeed limit (the vertical line at the right hand side of the limit curves) of the two airframes, turn rate and radius are in lock step for both aircraft. Notice that the F-16’s top airspeed is a smidgeon higher than that for the MiG-29 but once again, making advantage out of that is likely to be difficult.</P>


[此贴子已经被作者于2005-1-27 5:19:15编辑过]
<P>比较的飞机是F16(Viper)和MIG-29(Fulcrum)[大家一起来翻译,每人翻一段]</P>
<P>(图表是用Falcon4模拟得到的,当然采用的是真实性能数据)</P>
<P>图例说明:Note that we will draw curves for both the Viper and the Fulcrum overlaid on each other. This makes the graphs a little busy but it’s by far the easiest way to get a good visual picture of how the two jets match up. The F-16 will be blue lines and the MiG-29 will be drawn in red. Heavy lines will mark the flight envelope limits determined by aerodynamic design, structural <I>g</I> load tolerance and maximum design speed. The lighter lines will represent neutral Specific Excess Power (Ps = 0), the curve representing the point at which available thrust is not able to generate further acceleration.</P>
<P>The calculations used to derive the data for these curve plots are made using the same level of complexity as the flight model in the game. As such, the curves will be a true representation of what you will see in the game. That said, there are some assumptions made in performing the calculations that are used to plot the curves but these are situational. The same treatment is applied to generating curves for both aircraft. For example, in each case we start with clean aircraft, free of external stores but with 100% internal fuel aboard. All the calculations are done with maximum thrust available used also, with the engine in full afterburner. We will also only consider level turn performance for comparative purposes. Lastly, we assume a standard atmosphere.(两架飞机的比较条件:无任何外挂。100%机内燃油。引擎全开加力。气压是一个标准大气压。)</P>
<P>

上面是两机在海平面高度下的能量机动图(兰色是F16,红色是MIG29)</P>
<P>海平面高度能量机动性比较:</P>
<P>The curves seem almost to be overlaid right on top of each other. From this it’s easy to see that the fight will be very close, all other things being equal.(显而易见,两架战机在这个高度性能非常接近)</P>
<P>Looking first at the Ps curves, the MiG-29 has slightly worse sustained turn performance through most of the envelope as the red Ps curve stays below the blue curve. Only at the very low end of the speed range, where the engine/inlet design of the F-16 reduce it’s sustained turn rate, can the MiG-29 hold a turn better than the F-16. For the most part though, the F-16 can hold turn rates marginally better provided the fight stays above 220kts. However this advantage is razor thin for the F-16 pilot and for all practical purposes won’t really be exploitable.</P>
<P>The left side of the limit curves shows the aerodynamic limits of the two jets which govern the amount of lift that can be generated and hence the instantaneous turn rate. In this case, the MiG-29 has advantages in both higher instantaneous turn rate and smaller turn radius at any given speed up to corner speed for the F-16 (recall that corner speed is the highest apex of the limit curves).</P>
<P>From the F-16’s corner speed up to the design airspeed limit (the vertical line at the right hand side of the limit curves) of the two airframes, turn rate and radius are in lock step for both aircraft. Notice that the F-16’s top airspeed is a smidgeon higher than that for the MiG-29 but once again, making advantage out of that is likely to be difficult.</P>


[此贴子已经被作者于2005-1-27 5:19:15编辑过]
<P>好像就是飞行包线的比较吧。</P><P>还不快把图上来?</P>
[此贴子已经被作者于2005-1-26 1:58:15编辑过]
<P>
</P>
<P>三万英尺(顺便提一下,这是我去K歌时的必唱曲目,呵呵)高度:(也就是9150m)</P>
<P>At this altitude things are starting to look positively dicey for the F-16. The MiG-29 enjoys a noticeable sustained turn rate advantage at all speeds up to 850kts. Both aircraft struggle to sustain <I>g</I> load in the thinner air. Reading from the Ps curves, the MiG-29 peaks at just over 6<I>g</I> at around 780kts. The F-16 sustains less than 5<I>g</I> up to 750kts peaking at a mere 5.7<I>g</I> at a whopping 940kts.</P>
<P>In this case, superior sustained turn rate simply adds another advantage to those already realized by the MiG pilot at lower altitudes. Here too the MiG-29 enjoys smaller turn radii and instantaneous turn rates up to corner speed for the F-16, although these margins remain pretty slim.</P>
<P>The top speed advantage also erodes somewhat at the higher elevations but the F-16 still holds the edge in that department. This is probably of little practical value however.</P>
<P>Taken overall, the MiG pilot has decisive advantage at or below the corner speed of the F-16 given greater ability to point the nose with instantaneous turn rate, tighter turns and better ability to keep the pressure on with high sustained turn rates. Above corner speed the limits of turn radius and instantaneous turn rate even out at the load limit line but up to 850kts the MiG-29 still has the ability to sustain higher turn rates than the F-16.</P>
<P>In practical terms, the F-16 should try and avoid engaging at this altitude all other things being equal. You are better off trying to drag the fight down to lower altitudes if avoiding the engagement isn’t practical.</P>
<P> </P>
[此贴子已经被作者于2005-1-26 1:37:38编辑过]
楼主好像有一处理解错了,这些图的条件都是full AB,也就是全加力的,细线是Ps=0的情况,粗线是飞机气动上的限制,粗线超出细线的部分是Ps&lt;0的
[此贴子已经被作者于2005-1-26 1:23:44编辑过]
Note that we will draw curves for both the Viper and the Fulcrum overlaid on each other. This makes the graphs a little busy but it’s by far the easiest way to get a good visual picture of how the two jets match up. The F-16 will be blue lines and the MiG-29 will be drawn in red. Heavy lines will mark the flight envelope limits determined by aerodynamic design, structural <I>g</I> load tolerance and maximum design speed. The lighter lines will represent neutral Specific Excess Power (Ps = 0), the curve representing the point at which available thrust is not able to generate further acceleration.<p></p></P>注意:我们将绘制腹蛇(F-16的非官方绰号。)和支点的曲线,虽然这有点麻烦但能够最大限度的接近两个飞机真实的空战视图。F-16用蓝线而MIG-29用红线。精的线条代表两者受气动限制的飞行包线。结构G负荷和最大设计速度。细线代表SEP也就是能量曲线(PS=0),曲线将表现两者在哪点上其可用推力无法产生进步的加速。<p></p></P>
The calculations used to derive the data for these curve plots are made using the same level of complexity as the flight model in the game. As such, the curves will be a true representation of what you will see in the game. That said, there are some assumptions made in performing the calculations that are used to plot the curves but these are situational. The same treatment is applied to generating curves for both aircraft. For example, in each case we start with clean aircraft, free of external stores but with 100% internal fuel aboard. All the calculations are done with maximum thrust available used also, with the engine in full afterburner. We will also only consider level turn performance for comparative purposes. Lastly, we assume a standard atmosphere.<p></p></P>得到这些曲线区域的运算数据同样被用于相关飞行员游戏复杂飞行模型的运算。所以这里面的曲线就象你将在游戏中看到的那样真实。不过这有些假设的结果,相同的结果被应用于两个飞机产生的曲线。比如说;我们假设双方无外挂武器和副油箱,内部满油。开后燃的最大推力,同样仅考虑两者水平盘旋能力的区别<p></p></P> <p></p></P>
The curves seem almost to be overlaid right on top of each other. From this it’s easy to see that the fight will be very close, all other things being equal.(显而易见,两架战机在这个高度性能非常接近)<p></p></P> <p></p></P>Looking first at the Ps curves, the MiG-29 has slightly worse sustained turn performance through most of the envelope as the red Ps curve stays below the blue curve. Only at the very low end of the speed range, where the engine/inlet design of the F-16 reduce it’s sustained turn rate, can the MiG-29 hold a turn better than the F-16. For the most part though, the F-16 can hold turn rates marginally better provided the fight stays above 220kts. However this advantage is razor thin for the F-16 pilot and for all practical purposes won’t really be exploitable.<p></p></P>最初看S曲线,MIG-29的盘旋表现比F-16要稍微差些,大多数红色曲线在蓝色曲线以下,仅在低速度的区域,受发动机和进气道限制F-16的盘旋性能受到制约。MIG-29的盘旋性能比F-16要好。在大多数情况下,F-16可以在220节的左右可以保持更好的盘旋率。但这个优点对于F-16的飞行员来说是个双刃剑,并不是所有的科目都可以利用的。
<P>谢谢小飞猪啊~~</P><P>看来小飞猪的英语一定不错啦~呵呵</P>
The left side of the limit curves shows the aerodynamic limits of the two jets which govern the amount of lift that can be generated and hence the instantaneous turn rate. In this case, the MiG-29 has advantages in both higher instantaneous turn rate and smaller turn radius at any given speed up to corner speed for the F-16 (recall that corner speed is the highest apex of the limit curves).<p></p></P>左边的曲线显现两架飞机的气动所能提供的瞬间盘旋能力。在这个例子中,MIG-29有更高的瞬间盘旋能力和更小的盘旋半径可以提供比F-16更好的角速度,(那个角速度在限制曲线的最高点。)<p></p></P>
From the F-16’s corner speed up to the design airspeed limit (the vertical line at the right hand side of the limit curves) of the two airframes, turn rate and radius are in lock step for both aircraft. Notice that the F-16’s top airspeed is a smidgeon higher than that for the MiG-29 but once again, making advantage out of that is likely to be difficult</P>两者锁定的步骤中从F-16的角速度到由两者的结构,盘旋率和半径限制的空速(隐藏在曲线右边的垂线),F-16的空速略微的超过MIG-29,不过发挥这种优点似乎是困难的。<p></p></P>
高人里面好多词我都看不懂
However, the MiG-29 now also has the advantage in sustained turn rate up to 485kts at which point the F-16’s sustained turn rate takes over the advantage. The margin is still narrow but a little more pronounced than that we saw at sea level for the F-16. Anywhere in the range of 200-350kts, the MiG pilot should be able to gain advantage in a level turning fight started from a neutral position.<p></p></P>虽然MIG-29在485节速度下仍旧保持盘旋率上的优势蛤在此以上的速度F-16占据优势,边缘仍旧狭窄不过我们可以看到在200-350节速度条件下MIG-29的飞行员可以在进入交战中占据优势。<p></p></P>
小猪,把译文全文综合在一起更有利于大家阅读。谢谢!
At this altitude, neither jet can sustain 9<I>g</I> with the F-16 topping out at 8.6<I>g</I> sustained and the MiG-29 holding only 7.5<I>g</I>. The Ps curves cross over at roughly 485kts and the gap widens out from this point. As a result the F-16 will enjoy a significant advantage if the fight stays fast and level.<p></p></P>在这个高度上,任何战机都不能进行9G的机动,F-16的限制在8.6G,MIG-29是7.5G,PS曲线在485节处出现缺口,这意味着如果在这个速度和高度F-16将得到特别的好处,<p></p></P> <p></p></P>Notice also that the Viper has a considerable margin in top speed at this altitude. At the higher end of the spectrum then, the F-16 pilot may be able to use this in combination with higher specific excess power (applied to straight line acceleration) to separate in a guns only environment if the timing of the break is carefully arranged.<p></p></P>注意F-16在这个高度上在高速度上有相当的区域,在更高的范围,F-16的飞行员可以在近距格斗中使用更高的SEP,表现为直线加速度.<p></p></P> <p></p></P> <p></p></P> <p></p></P>At lower speeds the fight is still well balanced but at this altitude, the F-16 pilot would do well to keep the fight at speeds above 500kts where his jet will have a distinct sustained turn rate advantage.<p></p></P>在更低的速度下胜负的天平依然向着F-16,不过在这个高度条件下F-16的飞行员必须保持500节以下的速度这样才会得到更好的盘旋率的优势.<p></p></P> <p></p></P> <p></p></P>
At this altitude things are starting to look positively dicey for the F-16. The MiG-29 enjoys a noticeable sustained turn rate advantage at all speeds up to 850kts. Both aircraft struggle to sustain <I>g</I> load in the thinner air. Reading from the Ps curves, the MiG-29 peaks at just over 6<I>g</I> at around 780kts. The F-16 sustains less than 5<I>g</I> up to 750kts peaking at a mere 5.7<I>g</I> at a whopping 940kts.<p></p></P>在这个高度对F-16来说充满了不确定性,MIG-29在850节以上任何速度上具备盘旋上的优势,在稀薄的大气中战机都很难做G动作,MIG-29在780节速度条件下限制为6G,F-16在750节条件下至少可以做5G,在940节条件下的限制为5.7G<p></p></P>
In this case, superior sustained turn rate simply adds another advantage to those already realized by the MiG pilot at lower altitudes. Here too the MiG-29 enjoys smaller turn radii and instantaneous turn rates up to corner speed for the F-16, although these margins remain pretty slim.<p></p></P>在这个例子中,MIG飞行员继续保持在更低高度上的持续盘旋率上的优势,同时MIG-29凭借其更小的盘旋半径和更高的瞬间盘旋率可以在角速度超过F-16,虽然优势表现不那么明显的.<p></p></P>
请问图表的纵轴,DPS是指什么啊?
应该是高度,单位是英尺.