Here's the Boeing AH-64D (top), a.k.a. the Apache Longbow, alonside of the next generation Comanche (bottom).
(source)
The specs:
Length:
Height:
Wing Span:
58.17 ft (17.73 m)
16.25 ft (4.95 m)
17.15 ft (5.227 m)
Primary Mission Gross Weight
16,601 lb (7530 kg)
Hover In-Ground Effect (MRP)
Standard Day
13,690 ft (4172 m)
Hot Day ISA + 15C°
12,290 ft (3745 m)
Hover Out-of-Ground Effect (MRP)
Standard Day
9,480 ft (2889 m)
Hot Day ISA + 15C°
7,960 ft (2427 m)
Vertical Rate of Climb (MRP)
Sea Level Standard Day
1,475 fpm (450 mpm)
Hot Day 2070 ft (610 m)
1,255 fpm (383 mpm)
Maximum Rate of Climb (IRP)
Sea Level Standard Day
2,415 fpm (737 mpm)
Hot Day 2070 ft (610 m)
2,370 fpm (723 mpm)
Maximum Level Flight Speed
Sea Level Standard Day
141 kt (262 kph)
Hot Day 2070 ft (610 m)
143 kt (265 kph)
Cruise Speed (MCP)
Sea Level Standard Day
141 kt (262 kph)
Hot Day 2070 ft (610 m)
143 kt (265 kph)
ENGINES
The Apache is equipped with two turboshaft engines each providing 1,265kW. The American AH-64D has General Electric T700-GE-701 engines and the UK Apache is fitted with RTM322 engines from Rolls-Royce/Turbomeca.
WEAPONS
A 30mm automatic Boeing M230 Chain Gun is located under the fuselage. It provides a rate of fire of 625 rounds per minute. The helicopter has capacity for up to 1,200 rounds of ammunition.
The AH-64D is armed with the Lockheed Martin/Boeing AGM-114D Longbow Hellfire air-to-surface missile which has a millimetre wave seeker which allows the missile to perform in full fire and forget mode. Range is 8km to 12km. The Apache has been equipped with air-to-air missiles (Stinger, AIM-9 Sidewinder, Mistral and Sidearm) and 2.75in rockets. Thales Air Defence (formerly Shorts Missile Systems) of Belfast, Northern Ireland has trialled the Starstreak missile on the Longbow Apache helicopter, integrated with the Target Acquisition Designation Sight (TADS).
The Longbow Apache carries the combination of armaments chosen for the particular mission. In the close support role the helicopter carries 16 Hellfire missiles on four 4-rail launchers and four air-to-air missiles.
SENSORS
The AH-64D Longbow Apache is equipped with the Northrop Grumman millimetre-wave Longbow radar. The Longbow fire control radar incorporates an integrated radar frequency interferometer for passive location and identification of radar emitting threats. An advantage of millimetre wave is that it performs under poor visibility conditions and is less sensitive to ground clutter. The short wavelength allows a very narrow beamwidth which is resistant to countermeasures.
The Longbow Apache can effect an attack in thirty seconds. The radar dome is unmasked for a single radar scan and then remasked. The processors determine the location, speed and direction of travel of a maximum of 256 targets.
The Target Acquisition Designation Sight, TADS (AN/ASQ-170) and the Pilot Night Vision Sensor, PNVS (AN/AAQ-11) were developed by Lockheed Martin. The turret-mounted TADS provides direct view optics, television and three fields of view forward looking infra-red (FLIR) to carry out search, detection and recognition and Litton laser rangefinder/designator. PNVS consists of a FLIR in a rotating turret located on the nose above the TADS. The image from the PNVS is displayed in the monocular eyepiece of the Honeywell integrated Helmet And Display Sighting System, HADDS, worn by the pilot and co-pilot/gunner.
Lockheed Martin has developed a new targeting and night vision system for the Apache, called Arrowhead. Arrowhead has a dual field-of-view second-generation long-wave infrared sensor with improved range and resolution. The new system is planned to enter service with the US Army in 2004.
(source)