(4) Mk-84 LDGP + (2) AIM-120 Weapon Weight 1,967 lb (890 kg) Configuration Weight 10,222 lb (4,625 kg) Weapon Length 12.6 ft (3.84m) Weapon Diameter 18 in (45.7cm) Tail Span 2 ft (0.61 m) Max Drop Height Unlimited Max Tested Drop Velocity M=1.3 Guidance Ballistic Weapon Information: Development of the Mk 84 Low Drag General Purpose Bomb for use by the United States armed forces began in the 1950’s. The Mk 84 bomb, which is fitted with 30 in (0.762m) spaced suspension lugs, is packed with 942 lb (426 kg) of Tritonal or H-6. The known inventory of Mk 81, 82, and 84 bombs is 1.13 million. (4) GBU-27 + (2) AIM-120 Weapon Weight 2,165 lb (980 kg) Configuration Weight 11,014 lb (4,984 kg) Weapon Length 13.9 ft (4.24 m) Weapon Diameter 14.6 in (37 cm) Tail Span 2 ft (0.61 m) Max Drop Height Unlimited Max Tested Drop Velocity Unknown Guidance Semi-Active Laser Weapon Information: The GBU-27 is a modified GBU-24 Paveway III designed for internal carriage in the F-117A. This LGB carries the designation GBU-27 /B and uses a BLU- 109 /B penetrator bomb for its warhead. The main modifications made to the GBU-24 were to have shorter adaptor rings and to use the GBU-10’s rear wing unit to decrease the bomb’s length, and to clip the canards in order to make the weapon fit into the small F-117A Bomb Bay. The other major difference was the use of radar absorbing materials in order to prevent the bombs from being picked up by enemy radar once the aircraft’s bomb doors were opened. As a result of these modifications, the GBU-27 has a shorter range than the GBU-24, which can also be launched at lower altitudes. Guidance is by semi-active laser, the scanning detector assembly and laser energy receiver being mounted in the front of the canister behind the glass dome. After the bomb is released the laser error detector measures the angle between the bomb’s velocity vector and the line between the bomb and target. Steering corrections are made by moving the nose mounted canard control fins to adjust the bomb’s trajectory to line up with the target. The tail fins/wings are for stabilization purposes only. Target illumination for the system may be either by an aircraft-mounted laser marker (not necessarily the parent aircraft) or a ground-based laser transmitter. (4) 2000lb JDAM +(2) AIM-120 Weapon Weight 2,100 lb (950 kg) Configuration Weight 10,754 lb (4,866 kg) Weapon Length 13.2 ft (4.02 m) Weapon Diameter 18 in (46 cm) Tail Span 2 ft (0.61 m) Max Drop Height Unlimited Max Drop Velocity M=1.3 tested Guidance GPS / INS Weapon Information: A parallel program to the AGM-154 JSOW the GBU-31 JDAM program began in the late 1980’s. The goal of the program was to produce a low cost guided munition. Interesting to note is the GBU-31 is soon to be replaced by the GBU-32/35. This new weapon, will utilize an I-1000 1000 lb (452.5 kg) penetrator warhead and is intended for future use in the F-22 raptor. This weapon, the GBU-32/35 is being used to size the raptor’s weapon bays. The GBU-31 utilizes both the Mk 84 and BLU-109 warheads. Due to the Mk 84’s low cost, and commonality, it was chosen for the solid model seen above. The GBU-31 consists of three major subassemblies. The warhead (Mk 84), Saddleback stub wing assembly (attaches at hardpoints, three components), and a bolt on tail cone guidance kit. The guidance kit, contained within the replacement bolt-on tail cone consists of the following key elements: combined inertial measuring unit and GPS receiver; flight control computer; battery and power distribution unit; tail actuators and four movable clipped delta fins in a cruciform configuration. In keeping with other GPS guided weapons, the unit is believed to be fitted with two GPS antennas, one on top of the unit for initial flight and one in the tail for good reception during terminal maneuvering. Prior to bomb release the guidance unit will be fed with aircraft position, velocity and target coordinates through the aircraft to bomb interface. After release the bomb will guide itself to the target by means of rear fin deflection, which are driven by commands from an onboard computer that is constantly being updated by the GPS. The combination of the INS/GPS is expected to allow the bombs to hit within 32.8 ft (10 m) to 49.2 ft ( 15 m) of their targets. Wind tunnel tests in 1996 are reported to have cleared JDAM for release at up to Mach 1.3. (4) AGM-154 JSOW + (2) AIM-120 Weapon Weight 1,064 lb (481 kg) Configuration Weight 6,610 lb (2,991 kg) Weapon Length 14 ft (4.26 m) Weapon Diameter 21 in (53 cm) Tail Span 24 in (0.61 m) Max Drop Height Unlimited Max Drop Velocity Subsonic Guidance GPS / INS Weapon Information: In the late 1980’s the US Navy began a review of conventional weapons with the intention of reducing the number of weapon types. New systems were selected for future development: JDAM, TSSAM, JASSM, and the advanced interdiction weapon system to be later named Joint Standoff Weapon (JSOW). The JSOW program is intended to replace six existing weapons: the AGM-65 Maverick, AGM-123 Skipper, AGM-62A Walleye, Rockeye and APAM (Anti-Personnel/Anti-Material) submunition dispensers, and laser- and TV- guided bombs. Of particular attention on the previous list is: 1) All weapons are air to ground. 2) This weapon is designed to replace the GBU-27, one of the weapons on the RFP attachment 3 list. The JSOW is an aerodynamically shaped, unpowered glide dispenser with a rectangular crosssection body shape. It is made up of three major sections: a streamlined nose fairing that houses the guidance and control system, a rectangular center section payload container for holding the bomblets (this is fitted with two folding high aspect ratio wings on its upper surface, and two standard 30 in (0.762 m) spaced suspension lugs); and the tail section which has six fixed, sweptback rectangular fins positioned radially on the boat tail and contains the flight control system. (16) 250 lb Small Smart Bomb Weapon Weight 250 lb (113 kg) Configuration Weight 5,500 lb (2,489 kg) Weapon Length 8.2 ft (2.5 m) Weapon Diameter 6 in (0.15 m) Max Drop Height Unlimited Max Drop Velocity Unknown Guidance GPS / INS Weapon Information: The Small Smart Bomb is a 250 lb (113 kg) weapon that has the same penetration capabilities as a 2000lb (905 kg) BLU-109, but with only 50 lbs (22.6 kg) of explosive. With the INS/GPS guidance in conjunction with differential GPS (using all 12 channel receivers, instead of only 5) corrections provided by GPS SPO Accuracy Improvement Initiative (AII) and improved Target Location Error (TLE), it can achieve a 5-8m (16.4 to 26.3 ft) CEP. The submunition, with a smart fuze, has been extensively tested against multi-layered targets by Wright Laboratory under the Hard Target Ordnance Program and Miniature Munitions Technology Program. The length to diameter ratio and nose shape are designed to optimize penetration for a 50lb (22.6 kg) charge. This weapon is also a potential payload for standoff carrier vehicles such as Tomahawk, JSOW, JASSM, Conventional ICBM, etc. The Swing Wing Adapter Kit (SWAK) is added to give the SSB standoff of greater than 25 nm (48.6 km) from high altitude release. The wing kit is jettisoned at a midcourse way point if penetration is required so that velocity can be increased after wing release. For soft targets the wing kit continues to extend the glide range until small arms threat altitude is reached. At this point the wings are released. With INS/GPS guidance, coupled with AII, a 6-8 m (19.7 to 26.3 ft) CEP can be achieved. This wing kit allows the SSB to be directly attached to the aircraft at any 300 lb (135.75 kg) store station. The major advantage to the 250 lb (113.125 kg) small smart bomb is an improved number of targets per pass capability. AIM-120 C AMRAAM Weapon Weight 327 lb (148 kg) Configuration Weight 5,500 lb (2,489 kg) Weapon Length 12 ft (3.657 m) Weapon Diameter 7 in (0.1778 m) Fin Span 1 ft 6 in (0.457 m) Max Drop Height Unlimited Max Drop Velocity Supersonic Guidance Command from Launch Aircraft INS Monopulse Radar Seeker Weapon Information: The Advanced Medium-Range Air to Air Missile (AMRAAM) AIM-120 development program was started in 1975. It was designed to follow on and better the performance of the Aim-7 Sparrow and be carried on the F-14, F-15, F-16 and F/A-18 aircraft. In the late 90’s a modified(smaller) version of the missile, the AIM-120C was developed to be fitted to the F-22 Raptor. This newer version also incorporates a dual mode active and passive radar seeker. The AIM-120C is deigned to be rail, ejector or trapeze launched. On the F-22 the AIM-120C is launched using an EDO corp. LAU-142/A hydraulic / pneumatic ejector. In a typical engagement the missile is launched and first guided by on-missile inertial navigation, with command guidance updates from the launch aircraft. The missile then goes into the mid-course autonomous mode and continues to guide by inertial navigation only. Finally, the terminal mode is automatically initiated by the missile itself when the target is within rage of the missile’s active monopulse radar seeker, which then guides the missile onto the target aircraft. Foldout 2 – Weapons Information
The Vendetta Design Team Chris Atkinson is a bachelor’s candidate in aerospace engineering with a computer science minor. His responsibilities for the Vendetta included aerodynamic and performance analysis as well as validation modeling. He participates in the <strong>Cal</strong> <strong>Poly</strong> Flight Simulation Group and enjoys fencing and hiking. Chris Droney is a blended program master’s candidate in aerospace engineering. Chris was the team leader and lead configurator for the Vendetta. He designs, builds, and flies R/C planes and gliders. Chris also has his private pilot’s license and enjoys flying when he gets the chance. Kolby Keiser is a 23 year old master’s candidate in aerospace engineering. Her responsibility in the Vendetta design group was aircraft propulsion. In her spare time, Kolby enjoys hiking, exercising, and other outdoor activities, in addition to swing dancing. She also participates in diabetes education in the community. 105
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