ICBM

Description (EN)

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Descrição (PT-BR)

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Enrichment (EN)

Disambiguation: ICBM refers to the weapons classification itself, not a specific missile program; distinguished from MRBM (medium-range) and IRBM (intermediate-range) ballistic missiles by range threshold (>5,500 km).

An intercontinental ballistic missile (ICBM) is a strategic, land-based weapons system with a range exceeding 5,500 kilometers (3,400 miles), designed primarily to deliver nuclear warheads across intercontinental distances. Developed from Nazi German V-2 rocket technology after World War II, ICBMs became the cornerstone of Cold War nuclear deterrence. The Soviet Union deployed the first operational ICBM (R-7) in 1957, followed by the United States (Atlas) in 1959. Modern systems employ solid-fuel propulsion, inertial guidance with stellar navigation, and multiple independently targetable reentry vehicles (MIRVs) to ensure strategic credibility. Eight nations currently operate ICBMs: the United States, Russia, China, France, United Kingdom, India, Israel, and North Korea. A typical ICBM flight takes approximately 30 minutes for intercontinental range, with boost phase lasting 2–5 minutes, midcourse flight at altitudes of 1,200–1,500 kilometers, and terminal reentry at Mach 20+.

Enriquecimento (PT-BR)

Desambiguação: ICBM refers to the weapons classification itself, not a specific missile program; distinguished from MRBM (medium-range) and IRBM (intermediate-range) ballistic missiles by range threshold (>5,500 km).

Um míssil balístico intercontinental (ICBM) é um sistema de arma estratégica baseado em terra com alcance superior a 5.500 quilômetros (3.400 milhas), projetado primariamente para entregar ogivas nucleares em distâncias intercontinentais. Desenvolvido a partir da tecnologia do foguete V-2 alemão nazista após a Segunda Guerra Mundial, os ICBMs tornaram-se o alicerce da dissuasão nuclear da Guerra Fria. A União Soviética implantou o primeiro ICBM operacional (R-7) em 1957, seguido pelos Estados Unidos (Atlas) em 1959. Sistemas modernos empregam propulsão com combustível sólido, guia inercial com navegação estelar e múltiplos veículos de reentrada independentemente direcionáveis (MIRVs) para garantir credibilidade estratégica. Oito nações atualmente operam ICBMs: Estados Unidos, Rússia, China, França, Reino Unido, Índia, Israel e Coreia do Norte. Um voo típico de ICBM leva aproximadamente 30 minutos para alcance intercontinental, com fase de impulso durando 2–5 minutos, voo em altitude de 1.200–1.500 quilômetros, e reentrada terminal acima de Mach 20.

External Sources

• Intercontinental ballistic missile · Wikipedia · reliability: high — ICBM range definition: >5,500 km; Soviet R-7 first operational ICBM (1957); US Atlas deployed 1959; Flight phases: boost (2–5 min), midcourse (~25 min), terminal reentry; Apogee typically 1,200–1,500 km; Eight nations currently operate ICBMs
• Intercontinental Ballistic Missiles · Federation of American Scientists (FAS) · reliability: high — ICBMs enable global reach and strategic deterrence; Guidance locked during boost phase only (inertial + stellar navigation); Accuracy: hundreds of feet at 7,000 mile range; Cannot be recalled or destroyed in flight post-launch; Eight nations with ICBM capability listed; Cost: $50–65 million per missile (development-dependent)
• ICBM | Britannica · Britannica Encyclopedia · reliability: high — Intercontinental ballistic missile technical and historical overview; Cold War strategic context and proliferation history; Range classifications and warhead technologies

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