V-weapons, known in original German as Vergeltungswaffen (German pronunciation: [fɐˈgɛltʊŋsˌvafṇ], German: "retaliatory weapons", "reprisal weapons"), were a particular set of …

In aviation, V-speeds are standard terms used to define airspeeds important or useful to the operation of all aircraft. [1] . These speeds are derived from data obtained by aircraft designers …

2020年6月26日 · Understanding the Interplay of V1, VR, and V2. These three takeoff speeds are interconnected and play a critical role in ensuring a safe and successful takeoff. V1 sets the …

Luxembourg Resistance members around Dr Fernand Schwachtgen ("John the Blind") and Pierre Ginter provide the British military intelligence for the first time with a smuggled sketch …

2024年10月27日 · V2 represents the speed the aircraft must achieve by the time it reaches an altitude of 35 feet after takeoff. This speed ensures the aircraft has a sufficient climb rate, even …

2017年8月14日 · v2 — Takeoff safety speed for jets, turboprops or transport-category aircraft. Best climb gradient speed (i.e., best altitude increase per mile with the most critical engine inop).

2025年1月15日 · V-speeds provide safe aircraft operation. VX and VY optimize climb performance. VNE and VA prevent structural damage. VS0, VS1, VR, V1, and V2 guide key …

V1, which is defined as the speed beyond which takeoff should not be aborted (but the use of full reverse thrust is not mandated). Before V1, takeoff can be aborted. Vr (rotation speed), which …

2025年2月15日 · Pilots rely on three essential speeds—V1, VR, and V2—to ensure a safe departure. V1 (Decision Speed) determines whether takeoff can be aborted or continued, VR …

2024年3月3日 · v1（中断速度）、vr（旋转速度）和v2（安全爬升速度）是飞机起飞过程中的关键速度。 这些速度的计算通常基于飞机的性能和重量平衡。 虽然具体的计算可能因飞机型号而 …