 Heavier - than - air, they must have a power source to provide the thrust necessary to obtain lift  Lighter - than - air, filled by gases lighter than air, providing necessary lift.

 Aircraft 1. Airplane - with fixed wing 2. Helicopter - with rotor

 Thrust - produced by engine, necessary for forward motion  Drag - acts against thrust, resists against motion  Lift - necessary for flight, keeps aircraft in the air, produced by wing  Weight - caused by gravity

 Propeller high - wing single aircraft  High-wing, mid-wing, low-wing aircraft  Single, twin, triple or multiple - engined aircraft  Monoplane, biplane, triplane etc.

 Trainee  Transport aircraft  Fighter  Bomber Subsonic... IAS<1 Mach Transonic...IAS = 1 Mach Supersonic... IAS>1 Mach

 Propeller - device driven by engine providing necessary thrust  Wing - is mounted on bough side of airplane, produces lift  Aileron - control surface on trailing edge of wing for banking  Flap - device on inner trailing edge increasing lift during landing, approach and take-off  Fuselage - body of aircraft which connect each part  Landing gear - undercarriage - device for motion on ground

 Elevator - control surface necessary for climbing or descent  Rudder - control surface on trailing edge of fin for yawing  Fin - one part of tail unit (empennage)  Horizontal stabilizer - second part of empennage  Cabin - compartment for pilots and crew  Cockpit - where pilots sit  Ejection seat - special seat with parachute and rocket engine for saving pilot life  Cannopy - device covering cockpit  Radome - front part of aircraft protect aircraft radar.  Engine - providing thrust 1.Piston - with cylinders 2.Jet 3.Turboprop - when propeller is driven by turbine

 Flight deck - cabin for pilot, pilot compartment  Galley - special compartement where meals are prepared  Passanger cabin  Wing rib  Spar  Engine mounting pylon - carries power unit under wing  Leading edge - front side of wing  Trailing edge - rear side of wing

 Control stick - connected with control surfaces for control of airplane  Control pedals - connected by rudder  Radio  Transmiter - for sending information  Receiver - for receiving information  Fuel gauge - shows amount of fuel  Artificial horizont - shows atitude, indicates banking or rolling

 Combat helicopter

 Airliner - dopravní letadlo  Act - p ů sobit  Aircraft - letadlo  Airplane - letoun  Drag - odpor  Lift - vztlak  Thrust - tah  Weight - tíha  Aileron - k ř idélko  Elevator - vyškové kormidlo  Rudder - sm ě rové kormidlo  Fin - kýlová plocha  Vertical stabilizer - Svislá stabiliza č ní plocha  Horizontal stabilizer - Vodorovná stabiliza č ní plocha  Fuselage - trup

Artificial horizont...Um ě lý horizont Bomber...bombardovací letoun Fighter... stíhací letoun Trainee... cvi č ný letoun Airliner... dopravní letoun Porthole...okénko Baggage compartement...Zavazadlový prostor Cargo compartment... Nákladový prostor Pylon... pylon Rib... ž ebro Spar... nosník