From kls Sun Apr 26 03:44:23 1998 Path: bounce-back Newsgroups: sci.aeronautics.airliners Date: 26 Apr 98 03:44:23 From: "Neil Gerace" Subject: Re: Acceleration of a 747 References: Message-ID: Approved: kls@ohare.Chicago.COM Sender: kls@ohare.Chicago.COM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Organization: TeMo Rallysport JWizardC wrote in message ... > >I can't give acceleration in 'G's or a specific value, but the simple >answer is this: All commercial aircraft are certified to be able to >accelerate to takeoff speed -> and decelerate to a stop <- within the >confines of the runway. Eh? V1 (decision speed) is usually less than Vr (takeoff speed). Meaning that after acceleration past V1 to Vr it's too late to stop, and you're committed to the air. Depends on a lot of things like weather, weight and runway length, though. Sometimes V1 and Vr are the same; you're correct in that case. To answer the question though: A good car can take less time to get to the end of a runway than an airliner. Neil Gerace SilkRoad web.services geracen@wantree.com.au http://wantree.com.au/~geracen/silkroad/