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![[Proposed F-117X variant painting by Steven Moore .(LMSW)]](images/af117x/F-117Xpaintingsm.jpg)
A/F-117X
A derivative of and replacement for the F-117N, this proposed variant was submitted as a potential alternative to the joint advanced strike technology (JAST) aircraft (Now Joint Strike Fighter (JSF)). It was to be fitted with an afterburning F414 engine, LPI multimode (air-to-air and air-to-ground) radar, AIM-120 AMRAAM compatibility, expanded bomb bays (10,000 lb [4,536 kg] internal bomb load), provision for an 8,000 lb (3,629 kg) external bomb load (for "end of war" missions after an enemy's air defenses have been degraded) and three section spoilers forward of trailing edge flaps. The A/F-117X was proposed for a "silver bullet"-type strike force to augment F/A-18E/F Hornets. Lockheed hopeed to procure between 40 and 75 aircraft.
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Lockheed documents
credit the A/F-117X with AIM-120 AMRAAM and AIM-9
Sidewinder air-to-air missile capability. The pictures/diagrams show the
AIM-9/AIM-120 rails on the interior sides of the
A/F-117X's (fully bulged) bomb bay doors. Although it was not stated, it
is implied that the F-117B also has these capabilities.
F-117B
- Max. T.O. wt.: 73,200 lbs. (vs. F-117A's 52,500 lbs.)
- Unrefueled combat radius: 980 miles (vs. F-117A's 570 miles)
- Internal payload: 10,000 lbs. (vs. F-117A's 5,000 lbs.)
- Payload: AIM-120 AMRAAM, AIM-9, LGB
- Advanced all-weather sensors
- Improved low observability
- Engines: afterburning GE F414 (2)
- Aerodynamic improvements (including new wing and tail)
F-117N
Shorty after
Desert Storm offered the US Navy a minimally changed F-117A as the F-117N.
(Reported in the September 13, 1993 Aviation Week, pg. 96)
Inherent structural features of the F-117A fuselage enable it to
be effectivly modified specifically for Navy use. The F-117A
possesses three primary Navy characteristics not normally found in
Air Force aircraft. These are: a full-depth center keel from nose gear to
tail hook; three full-depth fuselage frames for wing carry through; and
the main landing gear being attached directly to a major bulkhead.
Lockheed thought
the Navy could use it like the Air Force uses it's F-117As-have a small
strike force that's routinely deployed on board
carriers that would be able to help beat down air defenses and leverage
the conventional airplanes that are on the ship. Originally the plan
was for 40 to 70 aircraft.
The Navy criticized
that the F-117N was for a single mission aircraft for night operations.
After the Pentagon rejected the F-117N in mid 1993, Lockheed went back to
the drawing boards to modify the F-117N so that it
met the requirements for the canceled A/F-X program and presented the
A/F-117X in mid 1994.A/F-117X
For the A/F-117X
Lockheed added an afterburning
General Electric F414 engine, the same one that powers the F/A-18E/F.
An elongated platypus section was added to accommodate the larger
engines. The A/F-117X also had an advanced radar/infrared
suite, which would have provided an all-weather air-to-ground and
air-to-air-missile capability. The latter, with the added maneuvering
capability provided by the afterburning engines, would turn the F-117 into
more of a multi mission aircraft according to Lockheed officials. The
A/F-117X met all of the A/F-X requirements except for the "carrier deck
spotting factor".
The internal payload
capacity was doubled-from the current 5,000 lbs. to 10,000 lbs. by enlarging
the bomb bay. The keel was dropped 19 in. and the doors replaced creating
a shallow, elongated bulge underneath the fuselage. The bulge added some
drag, but did not adversely effect aerodynamics or stealthiness according
to Lockheed. Two stores pylons were also added under each wing to allow
for external carriage of an additional 8,000 lbs. of fuel or ordinance.
Other features included a "very high resolution ground targeting radar,
navigational forward looking infrared (FLIR) system, and an infrared
search and track capability". (See World Air Power Journal #19, Winter
1994).
The
fuselage and landing gear were further modified and strengthened for
shipboard operations. The A/F-117X had a much-revised trapezoidal
horizontal tail (to control the landing pattern approach angle and descent
rate), with the horizontal stabilizers resembling those of the F-22.
The A/F-117X included all the Navy standards-a carrier qualified arrestor
hook, folding wings for deck storage, F-14 undercarriage, and twin
nosewheels (possible F-18) with catapult tie bar.
The wing sweep was
lessened to 42 degrees while the span was increased by 21.45 ft. The wing
also featured double-slotted trailing edge flaps and three-section
spoilers forward of flaps for improved low-speed approach handling
characteristics.
The A/F-117X would
feature access to equipment bays with "tail over water" and/or one engine
running. Lockheed documents credit the A/F-117X with AIM-120 AMRAAM and
AIM-9 Sidewinder air-to-air missile capability. The pictures/diagrams show
the AIM-9/AIM-120 rails on the interior sides of the A/F-117X's (fully
bulged) bomb bay doors. Flyaway cost was estimated at 70 million per
aircraft in 1994, based on a 250 aircraft production run.
In a
push for modular production and alleged
cost savings, Lockheed proposed that the US Navy and Air Force execute a
joint program to build both the F-117B and A/F-117X.
The Senate
Armed Services Committee earmarked $175 million to initiate a program
definition phase and flying demonstrator of the new production aircraft.- Similar to F-117B
- Max. T.O. wt.: 73,200 lbs. (vs. F-117A's 52,500 lbs.)
- Unrefueled combat radius: 980 miles (vs. F-117A's 570 miles)
- Internal payload: 10,000 lbs. (vs. F-117A's 5,000 lbs.)
- Payload: AIM-120 AMRAAM, AIM-9, LGB
- Engines: afterburning GE F414 (2)
- Wing sweep: 42 degrees (vs. F-117A's 67.3 degrees)
- Wing Span: 64 ft.9.4 in (vs. F-117A's 43 ft 4 in)
- Folding outer wing panels
- F-22 style clear canopy
- All-moving tailerons for roll control
- Strengthened undercarriage
- F-14 Automatic Carrier Landing System (ACLS)
(Thank you Venik for the scans.)
In June 1994, F-117 Programs vice president (and later Skunk Works vice president) Paul Martin said that the F-117A+, F-117B, and A/F-117X proposals were being briefed in Washington. Says Martin, "We're not gold-plated, we keep our team lean, and we work with the customer to provide the production he wants. We're the experts on low-rate production."
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