2023年8月11日 · (1) A maximum stalling speed or minimum steady flight speed without the use of lift-enhancing devices (V S1 ) of not more than 45 knots CAS, except for airplanes, which must have a V S1 speed of not more than 54 knots CAS at the aircraft's maximum certificated takeoff weight and most critical center of gravity.

2024年10月14日 · The FAA definition of Vs1 is the stall speed in a specific configuration, which is obviously pretty vague. We mostly interpret that as gear and flaps up, but is it with full power or power at idle?

2013年10月5日 · The green arc on my 1979 Warrior's (-161) ASI starts at 50 kts, so the Warrior II falls under the MOSAIC Vs1 requirement. Are V-speeds documented in any standard place other than on the ASI? There is a stall speed performance chart in the POH that graphically represents Vs1 and Vs0, but no explicit textual declaration.

2016年6月20日 · At low speed, near the stall, 40 KIAS (the low end of the white arc) and 48 KCAS (Vs0 in the POH) refer to the same actual speed. While there is a limited divergence (0 to 2%) between CAS and IAS at medium and high speed, this difference can be as much as 20% at low speed, when the aircraft pitch is large.

Stall Speed Vs1 (flaps up) 78 kcas: 145 kph: Stall Speed Vs0 (flaps down) 66 kcas: 122 kph: Rate of Climb (max cont as SL) 1,724 ft/min: 525 m/min: Rate of Climb (10,000 ft) 1,273 ft/min: 388 ft/min: Takeoff Ground Roll 1,1015 ft: 309 m: Landing Ground Roll 1,460 ft: 445 m:

2024年1月23日 · The current 54 KCAS Vs1 limitation will encourage manufacturers to add fixed high lift devices to make their aircraft fit within the category. This will reduce safety. One measure of a good standard is when designers look for ways to …

2024年1月18日 · Instead of one large step up in requirements, smaller steps would allow MOSAIC to bridge the gap between the current 54 KCAS Vs1 proposal and type-certified world. The EAA has proposed an increase to 58 KCAS. This slight increase in stall speed will help include several older certified aircraft, allowing an expansion in sport pilot privileges.

2023年8月30日 · The rule is proposed as: (3) Have a maximum stalling speed or minimum steady flight speed, without the use of lift-enhancing devices (VS1) at the aircraft's maximum certificated takeoff weight and most critical center of gravity of 54 knots CAS for an airplane, or 45 knots CAS for a glider or weight-shift-control aircraft.

2023年8月22日 · Under the proposed rulemaking, a sport pilot may act as pilot in command of an aircraft that fits the restrictions (54 KCAS, etc.), but your 172 will still have a standard airworthiness certificate. Per the proposed § 21.181 (a) (1):

特定外形失速速度（Specific shape stall speed）是洁净或特定外形的失速速度；特定外形飞机可操纵的修正无推力失速速度或最小平飞速度。常用Vs1表示。特定外形指表示襟翼收上并且起落架收起。