MIL-HDBK-87234, MILITARY HANDBOOK: PERSONAL PROTECTIVE EQUIPMENT, AIRCREW (14 FEB 1997) (SUPERSEDING AFGS-87234A] [S/S BY JSSG-2010]., This specification establishes the development requirements and verifications for aircrew personal protective equipment.
Product Code:SAE AS4052
Title:Gland Design: Scraper, Landing Gear, Installation
Issuing Committee:A-5b Gears, Struts And Couplings Committee
Scope:This SAE Aerospace Standard (AS) covers an alternate gland design for the installation of scraper/wiper rings in the lower end of landing gear shock struts for the purpose of contaminant exclusion. The defined scraper gland covered by this document, as shown, is a variant of AS4716, the accepted gland standard for MS28775, O-ringn packing seals. Piston diameters, gland internal diameters, groove sidewall angles and the surface finish are all defined by AS4716, but the gland outer retaining wall diameter is changed. AS4088 is similar to this document, but was developed by SAE A-6 for flight control and general purpose cylinders. It differs from this document primarily by the clearance between the rod (piston) and outer gland wall. Since landing gears are more susceptible to dirt contamination, the additional clearance provides a larger path to allow excessive dirt accumulation to exit the gland.
基本信息
| 标准名称： | 工业碳酸氢钾 |
| 英文名称： | Potassium Bicarbonate For industrial use |
| 中标分类： |
化工 >>
无机化工原料 >>
无机盐 |
| ICS分类： |
化工技术 >>
无机化学 >>
盐
|
| 替代情况： | 被HG/T 2828-2010代替 |
| 发布日期： | 1997-02-04 |
| 实施日期： | 1997-10-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 2011-03-01 |
| 出版社： | 化学工业出版社 |
| 出版日期： | 2004-04-18 |
| 页数： | 8页 |
适用范围
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前言
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所属分类： 化工 无机化工原料 无机盐 化工技术 无机化学 盐