F-15 ... leading ledge devices

Cobra.. where did you get your information? Everything I've read says the

same thing... 60klbs of thrust for the 15. 30k for each engine.

Dude, Cobra is right. 30K per engine?! You do realize its the same engine that used to power F-16's dont you?

Yep, the F-15A/B/C/D all have 23,450lbs per engine. The F-15E has 29K per engine.

the f-15 dont need slats because it has washout

The advertised engine thrusts are misleading. Specific engine thrust varies according to the flight regime. The Dash 220s on the F-15C could potentially produce as much as 26 000 lb or as little as 2000 lb.

I know that that. Thrust varies with altitude and ambient air temperature. High alt, low air density = less power. Low temps = gives more power. Thats why F-15Es with heavy weapon loads had to use afterburner to stay on the boom when refueling at high alt in OIF. Still nowhere near 30K but 23K is the standard manufacture advertised thrust rating for the PW 220Es.

Yeah.. you guys are right...

I double checked my info and it goes anywhere from 23 - 28k depending on source...

That's because F-15's used several different model engines.

I'm fairly certain that most of the F-15C's have been upgraded to 220's by now, giving them a significant boost in power.

F-15E's have been sporting the 229's which are pretty powerful.

The F-15 started life with the F100-PW-100 that were rated at 25,000lbs each. These engines suffered from reliability problems and the engine could suffer from power surges if the pilot became very active with the throttle in a dogfight.

The new F100-PW-220Es have better reliability and offer higher performance in the ability for the pilot to perform throttle slams without worrying about a flame out. But as a down side is that these engines are slightly less powerful, rated in around the 23,000lbs bracket.

The F100-PW-229s are rated at 29,000lbs each. They are the same as those fitted to the Block 52 F-16s. They are fitted to offset the extra weight of the F-15Es CFTs with extra fuel, LANTIRN system and the typically heavy bomb loads carried by them.

The 229s will be fitted in future to the F-15C/Ds that are to remain in service till 2025.

They may also get the new F110-PW-132s rated at 32,000lbs each.

Flying an F-15C with two of those hogs will be happy days indeed. There is life left in the 30 year old design yet.

I know figures vary from source to source but this backs up my figures.

http://www.globalsecurity.org/military/systems/aircraft/f-15-specs.htm

Some source say the 220Es have a higher thrust rating while others say they are slightly less powerful to improve the reliability.

As you already know no leading-edge maneuvering flaps are utilized in the F-15. Leading edge flaps were extensively analyzed in the design of the wing. This complication was avoided by the combination of low wing loading and fixed leading-edge camber that varies with spanwise position along the wing. Airfoil thickness ratios vary from 6 percent at the root to 3 percent at the tip.

The link to the full article I found on this below is well worth a read.

http://www.hq.nasa.gov/office/pao/History/SP-468/ch11-6.htm

Good post, but I have to disagree on some points.

- Dash 229 engines are for the E only. The C will not be retrofitted with them (or any new engine besides 220Es)

- The current definitive engine for the F-15C is the Dash 220, not the Dash 220E. The 220E is the 220 incorporating technology from the Dash 229s on the F-15E, and is a relatively new engine. There aren't any exact figures, but it probably produces more than the 23450lb of thrust of the 220 (probably between the 220 and the 229), because it was mainly designed to provide greater thrust to Block 32/42 F-16Cs.

- Currently, Block 42 F-16CGs are being re-equipped with Dash 229s, so spare 220/220Es have been made available to the F-15C fleet.

- the Dash 100s were rated at 23 800 lb approx., not 25 000 lb. The Dash 220 is slightly less powerful - 23450.

- F-15Es may be retrofitted sometime in the future with Dash 229As, which produce 32 000 to 35 000 lb of thrust (compared to the Dash 229, which produces 29 100 lb). Don't know where you got the F110-PW-132 from - pretty sure it doesn't exist as a Pratt&Whitney engine (the F110 is General Electric I believe)

- F-15Ks are built with GE's F110, producing somewhere like 29 800 lb of thrust I believe.

Your right the F110s are GE engines. I made a typing mistake, should have been F100-PW-132. This is the PW equivelent of the F110-GE-132 that is use in the Block 60 F-16s. That are rated at 32,500lbs.

A recent study has show that the USAF will need to serve beyond 2014 and to achieve this it will need new engines as the current 220/Es will be well past their life span. And there are to more 220s being made. Some of those 220s that were made available are to be fitted to ANG F-15A/B MSIP models aswell. Most of the ANG fleet are still using the -100s and desperatly want the upgrades.

Seeing as the first GE 132 was tested in a Block 50, it is possible to equip them in the F-15 in the future as the engine is able to fit in the engine mounting brackets. Along with possibly the 229s as said above. PW are still test their 132 engine so right now the 229 is the prime contender.

Those F-15K are powerful beasts. They are the only GE powered production F-15s, they may be able to set new records for the F-15 if they are done without CFTs loaded.

The upgrade program is commonly referred to as a -220 equivalent kit, or “E-kit,” upgrade, meaning that the F100-PW-100 engine is brought up to the equivalent specification in thrust and reliability of a production model F100-PW-220 engine.

In the upgrade process, the -100 engines are removed from the aircraft and overhauled at the U.S. Air Force’s depot at Tinker Air Force Base. During overhaul, the engines receive upgraded parts and components via an E-kit supplied by P&W, thus becoming the equivalent of a -220 production engine at less than half the cost of a new engine.

My bad, found an article from Pratt&Whitney that clears up the 220 stuff:

Dash 220: "Based on lessons learned, incorporates the latest technology available in the 1980s for both F-15s and F-16s, providing increased reliability, durability, operability and ease of maintenance. It has achieved the best safety record in U.S. Air Force history."

Dash 220E: "Earlier F100-PW-100 and F100-PW-200 engines can be upgraded to achieve the level of technology of the F100-PW-220. This configuration is termed the F100-PW-220E, "E" standing for equivalent."

Dash 220E+: "The technology of the F100-PW-229 can be incorporated into earlier F100 engines to enhance safety, reliability and performance. This configuration is known an the F100-PW-220+ or F100PW-220E+."

he link to the full article I found on this below is well worth a read.

http://www.hq.nasa.gov/office/pao/History/SP-468/ch11-6.htm