Injeksi translunar

Animasi lintasan injeksi translunar GRAIL-A. Tanggal peluncuran 10 September 2011, 13:08:52.775 UTC dengan Roket Delta II 7920H-10 D-356, Tahap kedua – Delta K, Tahap ketiga – Payload Assist Module PAM-D (opsional)
      GRAIL-A ·       Moon ·       Earth
Animasi injeksi translunar lintasan Chandrayaan-2. Tanggal peluncuran 22 Juli 2019, 09:13:12 UTC, Roket LVM3 M1, Tahap kedua – L110, Tahap ketiga – C25
      Earth ·       Moon ·       Chandrayaan-2
Animasi injeksi translunar lintasan LRO. Tanggal peluncuran 18 Juni 2009, 21:32:00 UTC, Roket Atlas V 401, Tahap kedua – Centaur III
      Lunar Reconnaissance Orbiter ·       Earth ·       Moon

Injeksi trans-lunar atau trans-lunar injection (TLI) adalah sebuah manuver pendorong digunakan untuk mengatur pesawat ruang angkasa pada lintasan yang akan menyebabkan ia tiba di Bulan.

Ciri lintasan lunar transfer mirip dengan transfer Hohmann, meskipun transfer energi rendah juga telah digunakan dalam beberapa kasus, seperti dengan probe Hiten.[1] Untuk misi durasi pendek tanpa gangguan yang signifikan dari sumber-sumber di luar sistem Bumi-Bulan, transfer Hohmann biasanya cepat lebih praktis.

Sebuah pesawat ruang angkasa melakukan TLI untuk memulai transfer bulan dari parkir melingkar orbit rendah sekitar Bumi. TLI besar dinyalakan, biasanya dilakukan oleh mesin roket kimia, meningkatkan kecepatan pesawat ruang angkasa, mengubah orbitnya dari lingkaran orbit Bumi rendah ke orbit yang sangat eksentrik. Sebagai pesawat ruang angkasa mulai meluncur pada transfer busur lunar, lintasan mendekati orbit elips tentang bumi dengan apogee dekat dengan radius orbit Bulan. TLI bakar adalah ukuran dan waktunya untuk tepat sasaran Bulan karena berputar mengelilingi bumi. Membakar diberi batas waktu sehingga pesawat ruang angkasa mendekati puncak sebagai pendekatan bulan. Akhirnya, pesawat ruang angkasa memasuki pengaruh ranah Bulan, membuat swingby lunar hiperbolik.

Lihat pula

Referensi

  1. ^ "Hiten". NASA. 
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