What are the maximum dive angles (CCIP) for MK82 and MK82 AIR?

[Kenan]

I searched the manual but couldn't find this info. If it's in there, please point me to the page or post the answer here.

 

Thanks.

[Pfadfinder]

I think everything over 90 degress could become hard:lol:

[Eddie]

There is no maximum. But see above :D

[WildBillKelsoe]

It depends on your speed , altitude and dive angle, and not the dive angle alone. Say your speed was 180 KIAs, Alt 4000, Angle o (HZL). As an observation of mine, it starts to appear under 1000 at 300 KIAs, at 0 degree.

 

I think also weight (drag) vs speed also affects it.

 

My 2 cents:

 

unless someone could provide a curve for PBIL solidarity (lol), I'd say floor the throttle and dive above 4000. My channel has a video for you to observe. Have a paper and pen and freeze the minute PBIL becomes solid. You have the HUD so write down Alt, Spd, and pitch angle. Use a 0,0 curve and draw a line X=Y. Plot Alt and speed and extend range to 10,000... To give the line curve...

[Laud]

Common procedures are 0°, 10°, 15°, 20°, 30°, 45°. But with enough altitude you can also use a higher angle.

[Geert Hooghe]

In WWII some US Divebombers were espacially build en reinforced to counter the forces on wings, ailerons and fuselage into a 90° (or more) dive, mostely used in the Pacific.

 

Has anyone an idea where the limit lies with the A-10 concerning divingspeed and angle ?

[EtherealN]

Divespeed restrictions are the same as any airspeed restrictions: M .75 if memory serves. There's no angle-restriction per se, there isn't for any aircraft - you just need to set it up such that you can exit the dive without over-Ging the airframe.

 

That's what the reinforcements were about - giving higher G tolerance to the wingspars.

 

You should be able to get proper speed and G limits data from the -1, which should be possible to find on the internet. There isn't a single limit because it all depends on your weight and drag index.

[Geert Hooghe]

Divespeed restrictions are the same as any airspeed restrictions: M .75 if memory serves. There's no angle-restriction per se, there isn't for any aircraft - you just need to set it up such that you can exit the dive without over-Ging the airframe.

 

That's what the reinforcements were about - giving higher G tolerance to the wingspars.

 

You should be able to get proper speed and G limits data from the -1, which should be possible to find on the internet. There isn't a single limit because it all depends on your weight and drag index.

 

:book:

[EtherealN]

One of the veterans at the club flew attack planes in the 40's, including divers, lots of fun hearing stories. He's still flying, too, at 90+! (Though obviously not military - he was considered "too old" by the papershufflers when the first proper jet was introduced!) That's the "right stuff" right there when you can pass your medicals at that age. :)

 

I'm a bit busy right now, but I'll try to remember checking the -1 for the relevant information tonight. Remind me by PM if I forget.

[Ein Name wie kein Name]

Well, from my own simulation experience I can tell that G should not be negative, otherwise you will get blown up. :doh:

[BlueRidgeDx]

What is the max and min Gs for dropping a MK-82?

 

MK-82 LDGP/AIR limits are:

 

Acceleration limits

+3.0 to +0.5g for Low Drag

+3.0 to +0.8g for High Drag

 

Dive Angle limits:

0 to -60 for Low Drag

0 to -35 for High Drag

[Yskonyn]

Divespeed restrictions are the same as any airspeed restrictions: M .75 if memory serves. There's no angle-restriction per se, there isn't for any aircraft - you just need to set it up such that you can exit the dive without over-Ging the airframe.

 

That's what the reinforcements were about - giving higher G tolerance to the wingspars.

 

You should be able to get proper speed and G limits data from the -1, which should be possible to find on the internet. There isn't a single limit because it all depends on your weight and drag index.

 

How would this Mach number translate into an IAS setting on lower altitudes?

In other words what is the IAS limit?

[Yskonyn]

mach 0.75 is indeed 450KIAS, but normally a Mach limit speed is not directly converted into an KIAS, but lower KIAS speeds apply.

I am interested to know what the limit speed in KIAS is, because I doubt it is 450KIAS as per the rule of thumb M = KIAS / 60

But I may be wrong?

[EtherealN]

How would this Mach number translate into an IAS setting on lower altitudes?

In other words what is the IAS limit?

 

I checked my -1 and could not find the appropriate charts to solve this problem, unfortunately. :(

 

The chart I remembered applied to top speed, not an actual Vne with adjustments for drag indexes and so on.

[Yskonyn]

What's a -1 ? :S

[Eddie]

Flight manual.

[jeffyd123]

Ive tried dropping bombs at 80 or 90 degrees and sometimes the hit my plane and blow me up.

[Laud]

The steeper the dive, the closer you have to watch your G's! ;)

[krazybiskit]

how exactly does one go past 90 degrees? past straight down and into the other direction, wouldnt that cause a neg g condition and a very bad time for a weapons release

[WildBillKelsoe]

Guys, we should agree that the CCIP PBIL represents the current bomb impact point relative to the conditions affecting the bomb, not the aircraft itself. With that said, the conditions affecting the bomb are the exact conditions affecting the aircraft..

 

Meaning, that the aircraft and the bomb are connected and the airframe affects bomb behaviour.. With that also said, your aircraft is the bomb. How you want the bomb to hit depends on how you want the aircraft to hit.. Both are unguided..

 

Because the bomb replicates the aircraft trajectory as it detaches..

[Laud]

Because the bomb replicates the aircraft trajectory as it detaches..

 

Uhm... No! All weapons (incl. Mk-82) have individual weight and drag and lift chracteristics. Especially different from the aircraft it's dropped from! That means they all have a significantly different flightpath towards the ground. That is why the IFFCC has to compute the pipper different for different types of ordnance.

[Laud]

At the time of release the bomb has exactly the same position and velocity vector as the releasing platform.

 

And what is that fact useful for? A split of a second later it's flightpath begins to develop according to it's own aerodynamic characteristics...

[EtherealN]

how exactly does one go past 90 degrees? past straight down and into the other direction, wouldnt that cause a neg g condition and a very bad time for a weapons release

 

Negative-G condition is a separate issue and you should NEVER release a bomb while having a negative G-load. You can be pointing up and still have a negative G-load; just put yourself into a 45-degree climbt and then push stick forward: done. :)

 

As for how to go past 90 degrees, that depends a little bit on how you choose to label the numbers, but essentially it is through simply pushing stick forward past a straight dive; after passing 90 degrees you'll either say you have a negative 90+ degree attitude, or you might say you have a less than 90 degree attitude but inverted. I personally prefer the former since it gives you more attitude information in less words.

[krazybiskit]

ethereal

thats the point i was trying to make in the first place, HOW DO YOU DROP A BOMB WHILE INVERTED!!!

[Wichid]

I think getting the dive angle right might be my problem with Mk-82 AIRs. These always seem to miss for me and go long and wide. How should these be dropped? Low and fast? Or in a 30 deg + dive?