Ракеты в DCS

[MicroShket]

20 часов назад, tavarish palkovnik сказал:

one model configuration and offsets

Still one model with each offset is a new configuration.

[MA_VMF]

2 часа назад, tavarish palkovnik сказал:

Your function in area where differ the most is about i58 1,45 so just as sample what it makes in flight, 1,35 vs 1,45

I think this is a margin of error.

[tavarish palkovnik]

3 hours ago, MA_VMF said:

I think this is a margin of error.

Fully agree !

Beside that...final drag coefficient, from angle of attack induced one, goes in drag force

 

Edited April 9 by tavarish palkovnik

[Seb]

 

Разработчики, а почему у Вас в игре ракета (коррект. НАР) С-25Л при срыве захвата может самоуничтожаться в воздухе? У неё нет самоликвидатора в принципе, она наследует электромеханический взрыватель от НАР С-25, он либо мгновенного действия, либо работает с замедлением. Исправить!

 

Цитата

При нажатии на боевую кнопку происходит подача электрических импульсов на электровоспламенители источников питания и ДУК. Через 1 сек, необходимую для выхода на режим бортовых источников питания , происходит подача электрических импульсов на электровоспламенители двигателя, арретира ДУК и на зарядку конденсаторов взрывательного устройства И-415, предварительно установленного на замедленное или мгновенное действие тумблером в кабине летчик.

В случаи отсутствия с ГСН сигнала о захвате цели или при отсутствии сигнала лазера летчик имеет возможность выполнить боевую задачу, осуществив пуск ракеты С-25ЛД в режиме неуправляемой ракеты с дальности, указанной в инструкции летчику. При нажатии на боевую кнопку рули в БУ переводятся во флюгирующий режим.

http://xn--80aafy5bs.xn--p1ai/aviamuseum/dvigateli-i-vooruzhenie/aviatsionnoe-vooruzhenie/sssr/aviatsionnye-rakety/upravlyaemye-rakety/ur-vozduh-poverhnost/takticheskaya-aviatsionnaya-raketa-maloj-dalnosti-s-25ld/

Edited April 11 by Seb

[okopanja]

@tavarish palkovnik 

 

[tripod3]

ОТРК делаются ли? Точка-У, искандер, АТАКМС, Дунь Фен-15

Когда отменят потолок 100 км для ракет?

[foxhound592]

@Chizh Будет ли новый апи для Р-73 с выходом модуля миг29?

[SkyStorm]

Всем привет! Ракеты Р-27ЭР стали самонаводящимися, как будто они активные, только у меня?

Заметил, что ракеты Р-27ЭР стали попадать после срыва захвата (применял с СУ-27). Решил поэкспериментировать и увидел, что ракета, выпущенная на разрешенной дальности по не маневрирующей цели поражает цель (бота на F/A-18C) даже если практически сразу после пуска развернуть самолет на 180 градусов и отключить РЛС. При этом бот не летит по прямой а совершает некий маневр. Однако с ракетами Р-27Р так не происходит, и ракета начинает лететь просто по прямой сразу после срыва захвата. Разве так и должно быть? Трек прилагаю

Р-27ЭР.trk

[MA_VMF]

Спойлер

 

1.5М

Спойлер

1.7М

Спойлер

 

2М

 

Edited May 12 by MA_VMF

[tavarish palkovnik]

On 5/11/2025 at 2:41 PM, MA_VMF said:

  Reveal hidden contents

 

1.5М

  Reveal hidden contents

1.7М

  Reveal hidden contents

 

2М

 

Content is not visible 

Hit it one more time, and with note what it presents 

[MA_VMF]

4 минуты назад, tavarish palkovnik сказал:

Content is not visible 

Hit it one more time, and with note what it presents 

Thanks for pointing out the problem. It should show

[tavarish palkovnik]

@MA_VMF

Will you give some words about these results. Grid fin obviously and you showed us dynamic pressure values. But this pressure is actually the easiest part of these calculations, simply density * velocity^2 * 1/2 … 1,225*680^2*1/2=283220 Pa

To me and for most others I guess, all these CFD modelings are “gold” digging where “gold” are Cx and Cy coefficients in function of Mach. When having these coefficients everything else is just piece of cake. So how you find those coefficients? I guess software gives you drag force and from that Cx coefficients just drop out.

So why and what for dynamic pressure? 
Just from curiosity, how long it takes, with some reasonable calculation grid, to get drag forces on let’s say 10 different Mach numbers at same altitude? Hours or days?

Generally, what takes the most time, making 3D model, or defining initial conditions or simply time computer needs to process data?

By the way, R-33, is it finished 

I really don’t have clue how long it could take for one rocket to get ballistic data from software. Yesterday, boring Sunday afternoon, I processed on rocket and let’s say in two and half hours I got Cx, Cy and roughly moment situations to define static stabilities of rocket depending of altitude, velocity and angle of attack

Maybe I’m just wrong and taking all that very simplified, but I question myself, why internet is not already filled with mostly all, if not all, rockets processed

Of course others are also welcome to share thoughts

[MA_VMF]

27 минут назад, tavarish palkovnik сказал:

@MA_VMF

Will you give some words about these results. Grid fin obviously and you showed us dynamic pressure values. But this pressure is actually the easiest part of these calculations, simply density * velocity^2 * 1/2 … 1,225*680^2*1/2=283220 Pa

To me and for most others I guess, all these CFD modelings are “gold” digging where “gold” are Cx and Cy coefficients in function of Mach. When having these coefficients everything else is just piece of cake. So how you find those coefficients? I guess software gives you drag force and from that Cx coefficients just drop out.

So why and what for dynamic pressure? 
Just from curiosity, how long it takes, with some reasonable calculation grid, to get drag forces on let’s say 10 different Mach numbers at same altitude? Hours or days?

Generally, what takes the most time, making 3D model, or defining initial conditions or simply time computer needs to process data?

By the way, R-33, is it finished 

I really don’t have clue how long it could take for one rocket to get ballistic data from software. Yesterday, boring Sunday afternoon, I processed on rocket and let’s say in two and half hours I got Cx, Cy and roughly moment situations to define static stabilities of rocket depending of altitude, velocity and angle of attack

Maybe I’m just wrong and taking all that very simplified, but I question myself, why internet is not already filled with mostly all, if not all, rockets processed

Of course others are also welcome to share thoughts

The BBCRF is doing this, I'm just taking the calculations from it and posting them here.

[tavarish palkovnik]

6 minutes ago, MA_VMF said:

BBCRF

??

 

[TotenDead]

В 19.05.2025 в 19:47, tavarish palkovnik сказал:

??

 

Альтер эго

[Fuerte]

Это другое ведомство, понимать надо)

[tavarish palkovnik]

 

Couple of new ones, actually one lately just remodeled (513-1) and other (507) started from blank 

 

Both motors are with significant sliver stage, one maybe with a bit to long but I don’t see some other reasonable configuration except this 6-points star

Although geometrically quite different, total impulse and propellant weight nearly same, under 6% difference 

For 513-1 I’m quite sure now it is with 8-points star, for 507 not fully sure in this 6, so if someone has some helpful graphics it would be appreciated

[tavarish palkovnik]

 

Nice view on motor interior (radiography)

I had, and still have dilemma, first I was on side of HARM motor, then split it 50:50 between HARM and Sparrow, but after reconsideration, this should be most likely image showing Mk58 motor

[MA_VMF]

В 05.04.2025 в 09:04, nighthawk2174 сказал:

May be relevant

nonsense