C-17 Globemaster

C-17 Globemaster
Maa	Yhdysvallat
Tyyppi	Suuret sotilaskuljetuskoneet
Tuotettu	1991–2015
Rakennettu	279

Nniiden Boeing C-17 Globemaster III on suuri sotilaskuljetuskone. Sen kehitti Yhdysvaltain ilmavoimille (USAF) 1980-luvulta 1990-luvun alkuun McDonnell Douglas; Yhtiö fuusioitui myöhemmin Boeingin kanssa. C-17: ää käytetään joukkojen ja rahdin nopeaan strategiseen ilmakuljetukseen tärkeimpiin toimintatukikohtiin tai eteenpäin toimiviin tukikohtiin kaikkialla maailmassa. Se voi myös suorittaa taktisia ilmakuljetuksia, lääketieteellisiä evakuointi- ja ilmapudotustehtäviä. C-17 kantaa kahden edellisen, mutta toisiinsa liittymättömän Yhdysvaltain armeijan rahtilentokoneen nimeä, Douglas C-74 Globemaster ja Douglas C-124 Globemaster II. Vaikka Yhdysvaltain ilmavoimat eivät enää osta C-17-koneita, niitä rakennetaan vientiasiakkaille.

Lähde: Boeing C-17 Globemaster Wikipediassa

C-17 Globemaster
Valokuvaaja	Ei tietää
Lokalisointi	Ei tietää
Valokuvat	60

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Boeing C-17 USAF kävelee ympäriinsä
Valokuvaajat	Cees Hendriks, Meindert de Vreez
Lokalisointi	Ei tietää
Valokuvat	143

Boeing C-17 USAF

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Boeing C-17A Globemaster III Walk Around
Valokuvaaja	Burhand Donke
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Valokuvat	130

C-17A Globemaster III

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The “Anywhere, Anytime” Heavy Lifter

Nniiden C-17 Globemaster III is the premier strategic transport aircraft of the 21st century. Developed by McDonnell Douglas (now Boeing), it was designed to bridge the gap between the massive C-5 Galaxy and the rugged C-130 Hercules. It can carry a massive payload—including an M1 Abrams tank—directly from the United States to a dirt landing strip in a remote combat zone. This unique “strategic-to-tactical” capability has made it the primary tool for rapid troop deployment, humanitarian aid, and aeromedical evacuation worldwide.

Attribute	Technical Specification (C-17A)
Rooli	Strategic / Tactical Military Transport
miehistö	3 (Pilot, Co-pilot, Loadmaster)
Moottorit	4 × Pratt & Whitney F117-PW-100 turbofans (40,440 lbf each)
Max Payload	77,519 kg (170,900 lbs)
Cruise Speed	Mach 0.74 (830 km/h / 450 knots)
Etäisyys	4,482 km (2,420 nmi) with max payload
Landing Distance	914 meters (3,000 feet) with max load
Siipiväli	51.76 meters (169 feet 10 inches)

Design Engineering: Blown Flaps & Thrust Reversers

Externally Blown Flaps: To land a 265-ton aircraft on a short runway, the C-17 uses “blown flaps.” Engine exhaust is directed over and through the huge double-slotted flaps, creating massive amounts of extra lift even at slow speeds.
Upward-Directed Thrust Reversers: The C-17 can back itself up an incline using its thrust reversers. Crucially, the air is directed upward and forward, preventing the engines from sucking up dust and rocks (FOD) while operating on unimproved dirt airfields.
Tactical Descent: The C-17 is famous for its ability to perform “tactical descents” at rates of up to 15,000 feet per minute. By using its thrust reversers in flight as speed brakes, it can drop out of the sky quickly to avoid surface-to-air missiles.
The T-Tail Design: The high-mounted T-tail keeps the horizontal stabilizers out of the turbulent air created by the wing and engines during high-lift maneuvers, ensuring the pilot maintains precise control during heavy-load landings.

Operational History: A Global Lifeline

Kabul Airlift (Operation Allies Refuge): In 2021, the C-17 became the face of the evacuation from Afghanistan. One C-17 (Reach 871) famously carried 823 passengers in a single flight, far exceeding its “official” capacity to save lives.
Humanitarian Giant: From the 2010 Haiti earthquake to the COVID-19 pandemic response, the C-17 is often the first aircraft to arrive with mobile hospitals, food, and water due to its ability to land where other big jets can’t.
The “Moose”: US Air Force crews affectionately call the plane the “Moose,” supposedly because of the distinct groaning sound the relief valves make when the aircraft is being refueled on the ground.
International Fleet: Beyond the US, the C-17 is the heavy-lift backbone for the UK (RAF), Australia, Canada, India, and the UAE, as well as the NATO Strategic Airlift Capability in Hungary.