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Description

Link: www.flickr.com/photos/dizzyfug…

Some background:
The McDonnell F-101 Voodoo was a supersonic jet fighter which primarily served the United States Air Force (USAF). Initially designed by McDonnell Aircraft as a long-range bomber escort (known as a penetration fighter) for the Strategic Air Command (SAC), the Voodoo was instead developed as a nuclear-armed fighter-bomber for the Tactical Air Command (TAC) and later evolved into an all-weather interceptor as well as into a reconnaissance platform.

The Voodoo's career as a fighter-bomber (F-101A and C) was relatively brief, but the reconnaissance fighter versions served for some time. Along with the US Air Force's Lockheed U-2 and US Navy's Vought RF-8 Crusaders, the RF-101 reconnaissance variant of the Voodoo was instrumental during the Cuban Missile Crisis and saw extensive service during the Vietnam War. Beyond original RF-101 single seaters, a number of former F-101A and Cs were, after the Vietnam era, converted into photo reconnaissance aircraft (as RF-101G and H) for the US Air National Guards.

Delays in the 1954 interceptor project (also known as WS-201A, which spawned to the troubled F-102 Delta Dagger) led to demands for an interim interceptor aircraft design, a role that was eventually won by the Voodoo’s B model. This new role required extensive modifications to add a large radar to the nose of the aircraft, a second crew member to operate it, and a new weapons bay using a unique rotating door that kept its four AIM-4 Falcon missiles (two of them alternatively replaced by unguided AIR-2 Genie nuclear warhead rockets with 1.5 Kt warheads) semi-recessed under the airframe.

The F-101B was first deployed into service on 5 January 1959, and this interceptor variant was produced in greater numbers than the original F-101A and C fighter bombers, with a total of 479 being delivered by the end of production in 1961. Most of these were delivered to the Air Defense Command (ADC), the only foreign customer was Canada from 1961 onward (as CF-101B), after the cancellation of the CF-105 Arrow program in February 1959. From 1963–66, USAF F-101Bs were upgraded under the Interceptor Improvement Program (IIP; also known as "Project Bold Journey") with a fire control system enhancement against hostile ECM and an infrared sighting and tracking (IRST) system in the nose in place of the Voodoo’s original hose-and drogue in-flight refueling probe.
The F-101B interceptor later became the basis of further Voodoo versions which were intended to improve the tactical reconnaissance equipment of the US Air National Guards. In the early 1970s, a batch of 22 former Canadian CF-101Bs were returned to the US Air Force and, together with some USAF Voodoos, converted into dedicated reconnaissance aircraft, similar to the former RF-101G/H conversion program for the single-seat F-101A/C fighter bombers.

These modified interceptors were the RF-101B and J variants. Both had their radar replaced with a set of three KS-87B cameras (one looking forward and two as a split vertical left/right unit) and a panoramic KA-56 camera, while the former missile bay carried different sensor and avionics packages.
The RF-101Bs were exclusively built from returned Canadian Voodoos. Beyond the photo camera equipment, they featured upgraded navigational equipment in the former weapon bay and a set of two AXQ-2 TV cameras, an innovative technology of the era. A TV viewfinder was fitted to the cockpit and the system was operated effectively from altitudes of 250 ft at 600 knots.

The other re-built reconnaissance version, the RF-101J, was created from twelve former USAF F-101Bs, all of them from the final production year 1961 and with relatively few flying hours. Beyond the KS-87B/KA-56 camera set in the nose, the RF-101J featured a Goodyear AN/APQ-102 SLAR (Side-looking airborne radar) that occupied most of the interceptor’s former rotating internal weapon bay, which also carried a fairing for a heat exchanger. The radar’s conformal antenna array was placed on either side of the lower nose aft of the cameras and allowed to record radar maps from view to each side of the aircraft and pinpoint moving targets like trucks in a swath channel approximately 10 nautical miles (11.5 miles/18 km) wide. To identify potential targets along the flight path for the SLAR and to classify them, the RF-101J furthermore received an AN/AAS-18 Infrared Detecting Set (IRDS). It replaced the F-101B’s IRST in front of the cockpit and was outwardly the most obvious distinguishing detail from the RF-1010B, which lacked this hump in front of the windscreen. The IRDS’ range was almost six miles (9.5 km) and covered the hemisphere in front of the aircraft. With the help of this cryogenically-cooled device the crewman in the rear cockpit could identify through a monitor small heat signatures like hot engines, firing weapons or campfires, even in rough terrain and hidden under trees.

Both new Voodoo recce versions were unarmed and received AN/APR-36 radar homing and warning sensors to nose and tail. They also had an in-flight refueling receptacle re-fitted, even though this was now only compatible with the USAF’s high-speed refueling boom system and was therefore placed in a dorsal position behind the cockpit. Furthermore, both versions received a pair of unplumbed underwing pylons for light loads, e. g. for AN/ALQ-101,-119 or -184 ECM pods, photo flash ejectors for night photography or SUU-42A/A Flares/Infrared decoys and chaff dispenser pods.

The RF-101Bs were delivered in 1971 and allocated to the 192d Tactical Reconnaissance Squadron of the Nevada Air National Guard, where they served only through 1975 because their advanced TV camera system turned out to be costly to operate and prone to failures. Their operational value was very limited and most RF-101Bs were therefore rather used as proficiency trainers than for recce missions. As a consequence, they were already phased out from January 1975 on.
The RF-101Js entered service in 1972 and were allocated to the 147th Reconnaissance Wing of the Texas Air National Guard. Unlike the RF-101Bs’ TV cameras, the AN/APQ-102 SLAR turned out to be reliable and more effective. These machines were so valuable that they even underwent some upgrades: By 1977 the front-view camera under the nose had been replaced with an AN/ASQ-145 Low Light Level TV (LLLTV) camera, sensitive to wavelengths above the visible (0.4 to 0.7 micrometer) wavelengths and ranging into the short-wave Infrared (usually to about 1.0 to 1.1 micrometer). The AN/ASQ-145 complemented the IRDS with visual input and was able to amplify the existing light 60,000 times to produce television images as clearly as if it were noon. In 1980, the RF-101Js were furthermore enabled to carry a centerline pod for the gigantic HIAC-1 LOROP (Long Range Oblique Photography) camera, capable of taking high-resolution images of objects 100 miles (160 km) away.

USAF F-101B interceptors were, as more modern and effective interceptors became available (esp. the F-4 Phantom II), handed off to the Air National Guard, where they served in the fighter role until 1982. Canadian CF-101B interceptors remained in service until 1984 and were replaced by the CF-18 Hornet. The last operational Canadian Voodoo, a single EF-101B (nicknamed the “Electric Voodoo”, a CF-101B outfitted with the jamming system of the EB-57E Canberra and painted all-black) was returned to the United States on 7 April 1987. However, the RF-101Js served with the Texas ANG until 1988, effectively being the last operational Voodoos in the world. They were replaced with RF-4Cs.

General characteristics:
Crew: Two
Length: 67 ft 5 in (20.55 m)
Wingspan: 39 ft 8 in (12.09 m)
Height: 18 ft 0 in (5.49 m)
Wing area: 368 ft² (34.20 m²)
Airfoil: NACA 65A007 mod root, 65A006 mod tip
Empty weight: 28,495 lb (12,925 kg)
Loaded weight: 45,665 lb (20,715 kg)
Max. takeoff weight: 52,400 lb (23,770 kg)

Powerplant:
2× Pratt & Whitney J57-P-55 afterburning turbojets
with 11,990 lbf (53.3 kN) dry thrust and 16,900 lbf (75.2 kN) thrust with afterburner each

Performance:
Maximum speed: Mach 1.72, 1,134 mph (1,825 km/h) at 35,000 ft (10,500 m)
Range: 1,520 mi (2,450 km)
Service ceiling: 54,800 ft (17,800 m)
Rate of climb: 36,500 ft/min (185 m/s)
Wing loading: 124 lb/ft² (607 kg/m²)
Thrust/weight: 0.74

Armament:
None, but two 450 US gal (370 imp gal; 1,700 l) drop-tanks were frequently carried on ventral hardpoints; alternatively, a central hardpoint could take single, large loads like the HIAC-1 LOROP camera pod.
A pair of retrofitted underwing hardpoints could carry light loads like ECM jammer pods, flare/chaff dispensers or photoflash ejectors

Description

Link: www.flickr.com/photos/dizzyfug…

Some background:
The McDonnell F-101 Voodoo was a supersonic jet fighter which primarily served the United States Air Force (USAF). Initially designed by McDonnell Aircraft as a long-range bomber escort (known as a penetration fighter) for the Strategic Air Command (SAC), the Voodoo was instead developed as a nuclear-armed fighter-bomber for the Tactical Air Command (TAC) and later evolved into an all-weather interceptor as well as into a reconnaissance platform.

The Voodoo's career as a fighter-bomber (F-101A and C) was relatively brief, but the reconnaissance fighter versions served for some time. Along with the US Air Force's Lockheed U-2 and US Navy's Vought RF-8 Crusaders, the RF-101 reconnaissance variant of the Voodoo was instrumental during the Cuban Missile Crisis and saw extensive service during the Vietnam War. Beyond original RF-101 single seaters, a number of former F-101A and Cs were, after the Vietnam era, converted into photo reconnaissance aircraft (as RF-101G and H) for the US Air National Guards.

Delays in the 1954 interceptor project (also known as WS-201A, which spawned to the troubled F-102 Delta Dagger) led to demands for an interim interceptor aircraft design, a role that was eventually won by the Voodoo’s B model. This new role required extensive modifications to add a large radar to the nose of the aircraft, a second crew member to operate it, and a new weapons bay using a unique rotating door that kept its four AIM-4 Falcon missiles (two of them alternatively replaced by unguided AIR-2 Genie nuclear warhead rockets with 1.5 Kt warheads) semi-recessed under the airframe.

The F-101B was first deployed into service on 5 January 1959, and this interceptor variant was produced in greater numbers than the original F-101A and C fighter bombers, with a total of 479 being delivered by the end of production in 1961. Most of these were delivered to the Air Defense Command (ADC), the only foreign customer was Canada from 1961 onward (as CF-101B), after the cancellation of the CF-105 Arrow program in February 1959. From 1963–66, USAF F-101Bs were upgraded under the Interceptor Improvement Program (IIP; also known as "Project Bold Journey") with a fire control system enhancement against hostile ECM and an infrared sighting and tracking (IRST) system in the nose in place of the Voodoo’s original hose-and drogue in-flight refueling probe.
The F-101B interceptor later became the basis of further Voodoo versions which were intended to improve the tactical reconnaissance equipment of the US Air National Guards. In the early 1970s, a batch of 22 former Canadian CF-101Bs were returned to the US Air Force and, together with some USAF Voodoos, converted into dedicated reconnaissance aircraft, similar to the former RF-101G/H conversion program for the single-seat F-101A/C fighter bombers.

These modified interceptors were the RF-101B and J variants. Both had their radar replaced with a set of three KS-87B cameras (one looking forward and two as a split vertical left/right unit) and a panoramic KA-56 camera, while the former missile bay carried different sensor and avionics packages.
The RF-101Bs were exclusively built from returned Canadian Voodoos. Beyond the photo camera equipment, they featured upgraded navigational equipment in the former weapon bay and a set of two AXQ-2 TV cameras, an innovative technology of the era. A TV viewfinder was fitted to the cockpit and the system was operated effectively from altitudes of 250 ft at 600 knots.

The other re-built reconnaissance version, the RF-101J, was created from twelve former USAF F-101Bs, all of them from the final production year 1961 and with relatively few flying hours. Beyond the KS-87B/KA-56 camera set in the nose, the RF-101J featured a Goodyear AN/APQ-102 SLAR (Side-looking airborne radar) that occupied most of the interceptor’s former rotating internal weapon bay, which also carried a fairing for a heat exchanger. The radar’s conformal antenna array was placed on either side of the lower nose aft of the cameras and allowed to record radar maps from view to each side of the aircraft and pinpoint moving targets like trucks in a swath channel approximately 10 nautical miles (11.5 miles/18 km) wide. To identify potential targets along the flight path for the SLAR and to classify them, the RF-101J furthermore received an AN/AAS-18 Infrared Detecting Set (IRDS). It replaced the F-101B’s IRST in front of the cockpit and was outwardly the most obvious distinguishing detail from the RF-1010B, which lacked this hump in front of the windscreen. The IRDS’ range was almost six miles (9.5 km) and covered the hemisphere in front of the aircraft. With the help of this cryogenically-cooled device the crewman in the rear cockpit could identify through a monitor small heat signatures like hot engines, firing weapons or campfires, even in rough terrain and hidden under trees.

Both new Voodoo recce versions were unarmed and received AN/APR-36 radar homing and warning sensors to nose and tail. They also had an in-flight refueling receptacle re-fitted, even though this was now only compatible with the USAF’s high-speed refueling boom system and was therefore placed in a dorsal position behind the cockpit. Furthermore, both versions received a pair of unplumbed underwing pylons for light loads, e. g. for AN/ALQ-101,-119 or -184 ECM pods, photo flash ejectors for night photography or SUU-42A/A Flares/Infrared decoys and chaff dispenser pods.

The RF-101Bs were delivered in 1971 and allocated to the 192d Tactical Reconnaissance Squadron of the Nevada Air National Guard, where they served only through 1975 because their advanced TV camera system turned out to be costly to operate and prone to failures. Their operational value was very limited and most RF-101Bs were therefore rather used as proficiency trainers than for recce missions. As a consequence, they were already phased out from January 1975 on.
The RF-101Js entered service in 1972 and were allocated to the 147th Reconnaissance Wing of the Texas Air National Guard. Unlike the RF-101Bs’ TV cameras, the AN/APQ-102 SLAR turned out to be reliable and more effective. These machines were so valuable that they even underwent some upgrades: By 1977 the front-view camera under the nose had been replaced with an AN/ASQ-145 Low Light Level TV (LLLTV) camera, sensitive to wavelengths above the visible (0.4 to 0.7 micrometer) wavelengths and ranging into the short-wave Infrared (usually to about 1.0 to 1.1 micrometer). The AN/ASQ-145 complemented the IRDS with visual input and was able to amplify the existing light 60,000 times to produce television images as clearly as if it were noon. In 1980, the RF-101Js were furthermore enabled to carry a centerline pod for the gigantic HIAC-1 LOROP (Long Range Oblique Photography) camera, capable of taking high-resolution images of objects 100 miles (160 km) away.

USAF F-101B interceptors were, as more modern and effective interceptors became available (esp. the F-4 Phantom II), handed off to the Air National Guard, where they served in the fighter role until 1982. Canadian CF-101B interceptors remained in service until 1984 and were replaced by the CF-18 Hornet. The last operational Canadian Voodoo, a single EF-101B (nicknamed the “Electric Voodoo”, a CF-101B outfitted with the jamming system of the EB-57E Canberra and painted all-black) was returned to the United States on 7 April 1987. However, the RF-101Js served with the Texas ANG until 1988, effectively being the last operational Voodoos in the world. They were replaced with RF-4Cs.

General characteristics:
Crew: Two
Length: 67 ft 5 in (20.55 m)
Wingspan: 39 ft 8 in (12.09 m)
Height: 18 ft 0 in (5.49 m)
Wing area: 368 ft² (34.20 m²)
Airfoil: NACA 65A007 mod root, 65A006 mod tip
Empty weight: 28,495 lb (12,925 kg)
Loaded weight: 45,665 lb (20,715 kg)
Max. takeoff weight: 52,400 lb (23,770 kg)

Powerplant:
2× Pratt & Whitney J57-P-55 afterburning turbojets
with 11,990 lbf (53.3 kN) dry thrust and 16,900 lbf (75.2 kN) thrust with afterburner each

Performance:
Maximum speed: Mach 1.72, 1,134 mph (1,825 km/h) at 35,000 ft (10,500 m)
Range: 1,520 mi (2,450 km)
Service ceiling: 54,800 ft (17,800 m)
Rate of climb: 36,500 ft/min (185 m/s)
Wing loading: 124 lb/ft² (607 kg/m²)
Thrust/weight: 0.74

Armament:
None, but two 450 US gal (370 imp gal; 1,700 l) drop-tanks were frequently carried on ventral hardpoints; alternatively, a central hardpoint could take single, large loads like the HIAC-1 LOROP camera pod.
A pair of retrofitted underwing hardpoints could carry light loads like ECM jammer pods, flare/chaff dispensers or photoflash ejectors