C-130 rocket assisted takeoff length

Hi all.
Does anyone know C-130 rocket assisted takeoff length?

Is it possible that it can be 30 meters (100 ft)?


Thanks.

"George" wrote in message
om
Hi all.
Does anyone know C-130 rocket assisted takeoff length?

I think normal JATO take off distance would be in the range of 800-1000 ft.
depending on load.

Is it possible that it can be 30 meters (100 ft)?

The CREDIBLE SPORT aircraft modifed for a second Iranian hostage rescue
attempt were supposed to take off with about a 100-ft ground roll. They
used a massive amount of rocket assist, far more that the usual RATO units.

A couple of descriptions of Credible Sport:
http://home.earthlink.net/~quade/crediblesport.html
http://www.spectrumwd.com/c130/artic...ible_Sport.htm

and pictures:
http://www.spectrumwd.com/c130/new-pics/dec.htm

--�
Tom Schoene Replace "invalid" with "net" to e-mail
"If brave men and women never died, there would be nothing
special about bravery." -- Andy Rooney (attributed)

George wrote:

Hi all.
Does anyone know C-130 rocket assisted takeoff length?

Is it possible that it can be 30 meters (100 ft)?

Thanks.

The SAC for the Navy C-130G (equivalent to the C-130E IIRR)
is online. Normal vs. Jato (8 x 1,000 lb. thrust ATO
rockets) t/o runs (in feet) at weights of 155,000 (normal
max., 2.5g) and 175,000 lb (overload, 2.25g):

Calm, ISA @ SL, Military rated power and 50% flaps. 155,000
lb: 4,125/3,565 feet. 175,000 lb: 5,390/4,750 feet.

The C-130H values should be somewhat less, as it had more
powerful engines but the same max. weights. I don't know
how the C-130J stacks up for t/o.

Guy

The 130J isn't set up for Jato. Those Dowty props and RR engines really toss
it in the air without it though!
Steve


"Guy Alcala" wrote in message
. ..
George wrote:

Hi all.
Does anyone know C-130 rocket assisted takeoff length?

Is it possible that it can be 30 meters (100 ft)?

Thanks.

The SAC for the Navy C-130G (equivalent to the C-130E IIRR)
is online. Normal vs. Jato (8 x 1,000 lb. thrust ATO
rockets) t/o runs (in feet) at weights of 155,000 (normal
max., 2.5g) and 175,000 lb (overload, 2.25g):

Calm, ISA @ SL, Military rated power and 50% flaps. 155,000
lb: 4,125/3,565 feet. 175,000 lb: 5,390/4,750 feet.

The C-130H values should be somewhat less, as it had more
powerful engines but the same max. weights. I don't know
how the C-130J stacks up for t/o.

Guy

Credible Sport actually got airborne in much less than 100ft. More like 2
1/2 - 5 tire revolutions.

Les

The CREDIBLE SPORT aircraft modifed for a second Iranian hostage rescue
attempt were supposed to take off with about a 100-ft ground roll. They
used a massive amount of rocket assist, far more that the usual RATO
units.

A couple of descriptions of Credible Sport:
http://home.earthlink.net/~quade/crediblesport.html
http://www.spectrumwd.com/c130/artic...ible_Sport.htm

and pictures:
http://www.spectrumwd.com/c130/new-pics/dec.htm

--�
Tom Schoene Replace "invalid" with "net" to e-mail
"If brave men and women never died, there would be nothing
special about bravery." -- Andy Rooney (attributed)

In article ,
(George) writes:
Hi all.
Does anyone know C-130 rocket assisted takeoff length?

Is it possible that it can be 30 meters (100 ft)?

Not with a loaded Herc, and the standard JATO setup.

From the Standard Aircraft Characteristics Chart for the U.S. Navy
C-130G (The same thing as a USAF C-130E, but the Navy wouldn't use the
same subtype letter, would they? )

The normal JATO fit are 8 1000-KS-14 JATO bottles, which give you
1000# thrust for 14 seconds.

Takeoff ground run, no wind, Standard Day Sea Level at 155,000# weight
(Max payload)
4125' without JATO, 3565' with HATO
Distance to clear a 50' obstacle:
5810' without JATO, 4812' with JATO.

Note that the extra thrust doesn't help the ground run very much, but
does help the initial climbout quite a bit.

--
Pete Stickney
A strong conviction that something must be done is the parent of many
bad measures. -- Daniel Webster

(Peter Stickney) wrote:

In article ,
(George) writes:
Hi all.
Does anyone know C-130 rocket assisted takeoff length?

Is it possible that it can be 30 meters (100 ft)?

Not with a loaded Herc, and the standard JATO setup.

From the Standard Aircraft Characteristics Chart for the U.S. Navy
C-130G (The same thing as a USAF C-130E, but the Navy wouldn't use the
same subtype letter, would they? )

The normal JATO fit are 8 1000-KS-14 JATO bottles, which give you
1000# thrust for 14 seconds.

Takeoff ground run, no wind, Standard Day Sea Level at 155,000# weight
(Max payload)
4125' without JATO, 3565' with HATO
Distance to clear a 50' obstacle:
5810' without JATO, 4812' with JATO.

Note that the extra thrust doesn't help the ground run very much, but
does help the initial climbout quite a bit.

Peter, what did they do to the Herc that they flew off of the
Forrestal(?) ? (without JATO at that!)
--

-Gord.

wrote:

Peter, what did they do to the Herc that they flew off of the
Forrestal(?) ? (without JATO at that!)

Well, it does help with ground run if you can guarantee a 30 kt
wind down the runway every time...

Mike

Michael Williamson
wrote:

wrote:

Peter, what did they do to the Herc that they flew off of the
Forrestal(?) ? (without JATO at that!)

Well, it does help with ground run if you can guarantee a 30 kt
wind down the runway every time...

Mike


That's true isn't it?...one tends to forget that ~30 knots is a
LOT of airspeed gain, especially at the top of the take-off roll
range, takes a comparatevly long time to gather that extra speed.

An a/c that you normally rotate at 105 you now rotate at 75
(well, not really but you get my drift)
--

-Gord.

" wrote:

Michael Williamson
wrote:

wrote:

Peter, what did they do to the Herc that they flew off of the
Forrestal(?) ? (without JATO at that!)

Well, it does help with ground run if you can guarantee a 30 kt
wind down the runway every time...

Mike


That's true isn't it?...one tends to forget that ~30 knots is a
LOT of airspeed gain, especially at the top of the take-off roll
range, takes a comparatevly long time to gather that extra speed.

An a/c that you normally rotate at 105 you now rotate at 75
(well, not really but you get my drift)

There's also the advantage that you don't have to pull G off the end of
the deck, in order to leave the 'ground' and climb over obstacles.
Indeed, you can even sink a bit. And of course, the a/c was almost
certainly nowhere near MTOW -- max. landing weight (8fps) is only
130,000 lb., vice the 155,000 or 175,000 lb. MTOW, and I imagine the
a/c was well under max. landing weight when it landed. The Herc's
power-on stall speeds (100% flaps) at landing weights are under 100
knots. For instance, at a landing weight of 110,459 lb. it has power
off/on stall speeds (100% flaps) of 80/65 kts. At 122,586 lb. they're
91/75 kts. 50% flaps would be used for takeoff, but even with no wind,
at a t/o weight of 100,000 lb. the a/c has a ground run of only 1,500
ft. at sea level. Add 30 kts or more of wind over deck and the Herc's
ability to land or takeoff from a large deck carrier isn't a surprise.

Guy