Apex Determination in Missile #29, 1958-02-24

File — Box: 1, Folder: 48

Staff Only

Scope and Contents

From the Collection:

The 31 boxes in this collection contain a variety of subjects and media. The collection encompasses Dr. Stuhlinger's work at NASA as well as housing a number of familial and personal effects such as photographs and diaries.

Dates

Other: 1958-02-24

Creator

From the Collection: Stuhlinger, Ernst (Person)

Conditions Governing Access

This collection is open for research in the Archives and Special Collections reading room. Handling guidelines and use restrictions will be communicated and enforced by archives staff members.

Extent

From the Collection: 32.5 Linear feet (33 boxes.)

Language of Materials

From the Series: English

Additional Description

Abstract

A preliminary comparison is presented of the apex time computed during firing with the apex time presently available from post-firing trajectory evaluation. The apex was computed after burnout of Stage I on the basis of four different and independent measurements: a. Dovap measurements, b. S-Band radar, c. C-Band radar, and d. Acceleration with missile-borne accelerometer. The determined ignition signal time was 403.5 sec and the ignition time confirmed from telemetry was 403.7 sec. Currently available post-flight evaluations of the data for Missile 29 indicate a correct ignition time of 411.7 sec.