យន្តហោះ B-1B Lancer​

យន្តហោះ B-1B Lancer​ ជាប្រភេទយន្តហោះទំលាក់គ្រាបបែកធុនឆ្ងាយ ឬ យុទ្ធសាស្រ្ត ផលិតនៅសហរដ្ឋអាមេរិកាំង ដែលមានលក្ខណៈសម្បត្តិដូចខាងក្រោម៖

• យន្តហោះ B-1B Lancer មានចម្ងាយហោះ ១២០០ គម (ហោះទៅ ហោះមក)
• មានល្បឿនហោះ ៣១៣ម/វិនាទី
• ផ្ទុកសព្វាវុធ ៣០ តោន
• ហោះទាបបំផុត ៨០០ ម កម្ពស (យន្តហោះ X-15 របស់អាមេរិកឆ្នាំ ១៩៦៥ ហោះបានកម្ពស់ ២៩ គីឡូមែត្រ។
• ហោះខ្ពស់បំផុត ១៤,៥ កម្ពស់ គម (យន្តហោះ MiG E-266M ឆ្នាំ ១៩៧៧ ហោះបានកម្ពស់ ១១ គម ចំណែក SpaceShipOne ហោះបានកំពស់ ១១២ គម

General Characteristics

• Type: B-1B Lancer
• Country: USA
• Function: bomber
• Year: 1986
• Crew: 4
• Engines: 4 * 13600 kg G.E. F101-GE-11
• Wing Span: 41.67 m/23.84 m
• Length: 44.81 m
• Height: 10.36 m
• Wing Area: 181.16 m2
• Max.Weight: 216364 kg
• Speed: 1375 km/h
• Ceiling: 14600 m
• Range: 12000 km
• Armament: 29030 kgs
• Unit cost: 200 million USD

• Primary Function: Long-range, multi-role, heavy bomber
• Contractor: Boeing, North America (formerly Rockwell International, North American Aircraft); Offensive avionics, Boeing Military Airplane; Defensive Avionics, EDO Corporation
• Power plant: Four General Electric F101-GE-102 turbofan engine with afterburner
• Thrust: 30,000-plus pounds with afterburner, per engine
• Wingspan: 137 feet (41.8 meters) extended forward, 79 feet (24.1 meters) swept aft
• Length: 146 feet (44.5 meters)
• Height: 34 feet (10.4 meters)
• Weight: approximately 190,000 pounds (86,183 kilograms)
• Maximum Takeoff Weight: 477,000 pounds (216,634 kilograms)
• Fuel Capacity: 265,274 pounds (120,326 kilograms)
• Payload: 75,000 pounds (34,019 kilograms)
• Speed: 900-plus mph (Mach 1.2 at sea level)
• Range: Intercontinental
• Ceiling: More than 30,000 feet (9,144 meters)
• Armament: 84 500-pound Mk-82 or 24 2,000-pound  Mk-84 general purpose bombs; up to 84 500-pound Mk-62 or 8 2,000-pound Mk-65 Quick Strike naval mines; 30 cluster munitions (CBU-87, -89, -97) or 30 Wind-Corrected Munitions Dispensers (CBU-103, -104, -105); up to 24 2,000-pound GBU-31 or 15 500-pound GBU-38 Joint Direct Attack Munitions; up to 24 AGM-158A Joint Air-to-Surface Standoff Missiles; 15 GBU-54 Laser Joint Direct Attack Munitions
• Crew: Four (aircraft commander, copilot, and two combat systems officers)
• Unit Cost: $317 million
• Initial operating capability:  October 1986
• Inventory: Active force, 62 (test, 2); ANG, 0; Reserve, 0

(Current as of September 2016)

The Atmosphere region 
Troposphere: surface to 8,000 metres (5.0 mi) at the poles, 18,000 metres (11 mi) at the Equator, ending at the Tropopause

1. Stratosphere: Troposphere to 50 kilometres (31 mi)
2. Mesosphere: Stratosphere to 85 kilometres (53 mi)
3. Thermosphere: Mesosphere to 675 kilometres (419 mi)
4. Exosphere: Thermosphere to 10,000 kilometres (6,200 mi)

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